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Address	Label	Metrics	Data Type	Period Type	boi_dim:BCC	boi_dim:CSC	boi_dim:MCC	boi_dim:MUU	boi_dim:RPC	boi_dim:RPP
r0.1	label_boi_a2/Cost as of Jan. 1	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	N/A	N/A	N/A	N/A	boi_RP:x22
r0.2	label_boi_a2/Additions	boi_met:md340	xbrli:monetaryItemType	instant	boi_BC:x1	N/A	N/A	boi_MU:x1	N/A	N/A
r0.3	label_boi_a2/Subtractions	boi_met:md342	xbrli:monetaryItemType	instant	boi_BC:x1	N/A	N/A	boi_MU:x1	N/A	N/A
r0.4	label_boi_a2/Other	boi_met:md358	xbrli:monetaryItemType	instant	boi_BC:x1	N/A	N/A	boi_MU:x1	N/A	N/A
r0.5	label_boi_a2/Cost as of Dec. 31	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	N/A	N/A	N/A	N/A	N/A
r0.6	label_boi_a2/Cumulative depreciation as of Jan. 1	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	N/A	N/A	N/A	N/A	boi_RP:x22
r0.7	label_boi_a2/Depreciation	boi_met:md347	xbrli:monetaryItemType	instant	boi_BC:x1	N/A	N/A	boi_MU:x1	N/A	N/A
r0.8	label_boi_a2/Recognized losses due to decrease in value	boi_met:md348	xbrli:monetaryItemType	instant	boi_BC:x1	N/A	N/A	boi_MU:x1	N/A	N/A
r0.9	label_boi_a2/Subtractions	boi_met:md350	xbrli:monetaryItemType	instant	boi_BC:x1	N/A	N/A	boi_MU:x1	N/A	N/A
r0.10	label_boi_a2/Other	boi_met:md357	xbrli:monetaryItemType	instant	boi_BC:x1	N/A	N/A	boi_MU:x1	N/A	N/A
r0.11	label_boi_a2/Cumulative depreciation as of Dec. 31	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	N/A	N/A	N/A	N/A	N/A
r0.12	label_boi_a2/Amortized balance as of Dec. 31	boi_met:mi1	xbrli:monetaryItemType	instant	boi_BC:x1	N/A	N/A	N/A	boi_RP:x24	N/A
r0.13	label_boi_a2/Avg. weighted depreciation rate in pct.	boi_met:md353	xbrli:monetaryItemType	instant	boi_BC:x1	N/A	N/A	boi_MU:x1	boi_RP:x24	N/A
r1.1	Consolidated/Cost as of Jan. 1	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	N/A	N/A	N/A	boi_RP:x22
r1.2	Consolidated/Additions	boi_met:md340	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	N/A	boi_MU:x1	N/A	N/A
r1.3	Consolidated/Subtractions	boi_met:md342	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	N/A	boi_MU:x1	N/A	N/A
r1.4	Consolidated/Other	boi_met:md358	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	N/A	boi_MU:x1	N/A	N/A
r1.5	Consolidated/Cost as of Dec. 31	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	N/A	N/A	N/A	N/A
r1.6	Consolidated/Cumulative depreciation as of Jan. 1	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	N/A	N/A	N/A	boi_RP:x22
r1.7	Consolidated/Depreciation	boi_met:md347	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	N/A	boi_MU:x1	N/A	N/A
r1.8	Consolidated/Recognized losses due to decrease in value	boi_met:md348	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	N/A	boi_MU:x1	N/A	N/A
r1.9	Consolidated/Subtractions	boi_met:md350	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	N/A	boi_MU:x1	N/A	N/A
r1.10	Consolidated/Other	boi_met:md357	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	N/A	boi_MU:x1	N/A	N/A
r1.11	Consolidated/Cumulative depreciation as of Dec. 31	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	N/A	N/A	N/A	N/A
r1.12	Consolidated/Amortized balance as of Dec. 31	boi_met:mi1	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	N/A	N/A	boi_RP:x24	N/A
r1.13	Consolidated/Avg. weighted depreciation rate in pct.	boi_met:md353	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	N/A	boi_MU:x1	boi_RP:x24	N/A
1.1	Buildings and land/Cost as of Jan. 1	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x831	N/A	N/A	boi_RP:x22
1.2	Buildings and land/Additions	boi_met:md340	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x831	boi_MU:x1	N/A	N/A
1.3	Buildings and land/Subtractions	boi_met:md342	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x831	boi_MU:x1	N/A	N/A
1.4	Buildings and land/Other	boi_met:md358	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x831	boi_MU:x1	N/A	N/A
1.5	Buildings and land/Cost as of Dec. 31	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x831	N/A	N/A	N/A
1.6	Buildings and land/Cumulative depreciation as of Jan. 1	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x831	N/A	N/A	boi_RP:x22
1.7	Buildings and land/Depreciation	boi_met:md347	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x831	boi_MU:x1	N/A	N/A
1.8	Buildings and land/Recognized losses due to decrease in value	boi_met:md348	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x831	boi_MU:x1	N/A	N/A
1.9	Buildings and land/Subtractions	boi_met:md350	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x831	boi_MU:x1	N/A	N/A
1.10	Buildings and land/Other	boi_met:md357	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x831	boi_MU:x1	N/A	N/A
1.11	Buildings and land/Cumulative depreciation as of Dec. 31	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x831	N/A	N/A	N/A
1.12	Buildings and land/Amortized balance as of Dec. 31	boi_met:mi1	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x831	N/A	boi_RP:x24	N/A
1.13	Buildings and land/Avg. weighted depreciation rate in pct.	boi_met:md353	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x831	boi_MU:x1	boi_RP:x24	N/A
2.1	Installations and improvements in rented property/Cost as of Jan. 1	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x832	N/A	N/A	boi_RP:x22
2.2	Installations and improvements in rented property/Additions	boi_met:md340	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x832	boi_MU:x1	N/A	N/A
2.3	Installations and improvements in rented property/Subtractions	boi_met:md342	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x832	boi_MU:x1	N/A	N/A
2.4	Installations and improvements in rented property/Other	boi_met:md358	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x832	boi_MU:x1	N/A	N/A
2.5	Installations and improvements in rented property/Cost as of Dec. 31	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x832	N/A	N/A	N/A
2.6	Installations and improvements in rented property/Cumulative depreciation as of Jan. 1	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x832	N/A	N/A	boi_RP:x22
2.7	Installations and improvements in rented property/Depreciation	boi_met:md347	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x832	boi_MU:x1	N/A	N/A
2.8	Installations and improvements in rented property/Recognized losses due to decrease in value	boi_met:md348	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x832	boi_MU:x1	N/A	N/A
2.9	Installations and improvements in rented property/Subtractions	boi_met:md350	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x832	boi_MU:x1	N/A	N/A
2.10	Installations and improvements in rented property/Other	boi_met:md357	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x832	boi_MU:x1	N/A	N/A
2.11	Installations and improvements in rented property/Cumulative depreciation as of Dec. 31	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x832	N/A	N/A	N/A
2.12	Installations and improvements in rented property/Amortized balance as of Dec. 31	boi_met:mi1	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x832	N/A	boi_RP:x24	N/A
2.13	Installations and improvements in rented property/Avg. weighted depreciation rate in pct.	boi_met:md353	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x832	boi_MU:x1	boi_RP:x24	N/A
3.1	Computers and equipment/Cost as of Jan. 1	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x676	N/A	N/A	boi_RP:x22
3.2	Computers and equipment/Additions	boi_met:md340	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x676	boi_MU:x1	N/A	N/A
3.3	Computers and equipment/Subtractions	boi_met:md342	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x676	boi_MU:x1	N/A	N/A
3.4	Computers and equipment/Other	boi_met:md358	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x676	boi_MU:x1	N/A	N/A
3.5	Computers and equipment/Cost as of Dec. 31	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x676	N/A	N/A	N/A
3.6	Computers and equipment/Cumulative depreciation as of Jan. 1	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x676	N/A	N/A	boi_RP:x22
3.7	Computers and equipment/Depreciation	boi_met:md347	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x676	boi_MU:x1	N/A	N/A
3.8	Computers and equipment/Recognized losses due to decrease in value	boi_met:md348	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x676	boi_MU:x1	N/A	N/A
3.9	Computers and equipment/Subtractions	boi_met:md350	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x676	boi_MU:x1	N/A	N/A
3.10	Computers and equipment/Other	boi_met:md357	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x676	boi_MU:x1	N/A	N/A
3.11	Computers and equipment/Cumulative depreciation as of Dec. 31	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x676	N/A	N/A	N/A
3.12	Computers and equipment/Amortized balance as of Dec. 31	boi_met:mi1	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x676	N/A	boi_RP:x24	N/A
3.13	Computers and equipment/Avg. weighted depreciation rate in pct.	boi_met:md353	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x676	boi_MU:x1	boi_RP:x24	N/A
4.1	Software costs/Cost as of Jan. 1	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x651	N/A	N/A	boi_RP:x22
4.2	Software costs/Additions	boi_met:md340	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x651	boi_MU:x1	N/A	N/A
4.3	Software costs/Subtractions	boi_met:md342	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x651	boi_MU:x1	N/A	N/A
4.4	Software costs/Other	boi_met:md358	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x651	boi_MU:x1	N/A	N/A
4.5	Software costs/Cost as of Dec. 31	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x651	N/A	N/A	N/A
4.6	Software costs/Cumulative depreciation as of Jan. 1	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x651	N/A	N/A	boi_RP:x22
4.7	Software costs/Depreciation	boi_met:md347	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x651	boi_MU:x1	N/A	N/A
4.8	Software costs/Recognized losses due to decrease in value	boi_met:md348	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x651	boi_MU:x1	N/A	N/A
4.9	Software costs/Subtractions	boi_met:md350	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x651	boi_MU:x1	N/A	N/A
4.10	Software costs/Other	boi_met:md357	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x651	boi_MU:x1	N/A	N/A
4.11	Software costs/Cumulative depreciation as of Dec. 31	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x651	N/A	N/A	N/A
4.12	Software costs/Amortized balance as of Dec. 31	boi_met:mi1	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x651	N/A	boi_RP:x24	N/A
4.13	Software costs/Avg. weighted depreciation rate in pct.	boi_met:md353	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x651	boi_MU:x1	boi_RP:x24	N/A
5.1	Motor vehicles/Cost as of Jan. 1	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x828	N/A	N/A	boi_RP:x22
5.2	Motor vehicles/Additions	boi_met:md340	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x828	boi_MU:x1	N/A	N/A
5.3	Motor vehicles/Subtractions	boi_met:md342	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x828	boi_MU:x1	N/A	N/A
5.4	Motor vehicles/Other	boi_met:md358	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x828	boi_MU:x1	N/A	N/A
5.5	Motor vehicles/Cost as of Dec. 31	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x828	N/A	N/A	N/A
5.6	Motor vehicles/Cumulative depreciation as of Jan. 1	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x828	N/A	N/A	boi_RP:x22
5.7	Motor vehicles/Depreciation	boi_met:md347	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x828	boi_MU:x1	N/A	N/A
5.8	Motor vehicles/Recognized losses due to decrease in value	boi_met:md348	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x828	boi_MU:x1	N/A	N/A
5.9	Motor vehicles/Subtractions	boi_met:md350	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x828	boi_MU:x1	N/A	N/A
5.10	Motor vehicles/Other	boi_met:md357	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x828	boi_MU:x1	N/A	N/A
5.11	Motor vehicles/Cumulative depreciation as of Dec. 31	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x828	N/A	N/A	N/A
5.12	Motor vehicles/Amortized balance as of Dec. 31	boi_met:mi1	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x828	N/A	boi_RP:x24	N/A
5.13	Motor vehicles/Avg. weighted depreciation rate in pct.	boi_met:md353	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x828	boi_MU:x1	boi_RP:x24	N/A
6.1	Office furniture and equipment/Cost as of Jan. 1	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x829	N/A	N/A	boi_RP:x22
6.2	Office furniture and equipment/Additions	boi_met:md340	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x829	boi_MU:x1	N/A	N/A
6.3	Office furniture and equipment/Subtractions	boi_met:md342	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x829	boi_MU:x1	N/A	N/A
6.4	Office furniture and equipment/Other	boi_met:md358	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x829	boi_MU:x1	N/A	N/A
6.5	Office furniture and equipment/Cost as of Dec. 31	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x829	N/A	N/A	N/A
6.6	Office furniture and equipment/Cumulative depreciation as of Jan. 1	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x829	N/A	N/A	boi_RP:x22
6.7	Office furniture and equipment/Depreciation	boi_met:md347	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x829	boi_MU:x1	N/A	N/A
6.8	Office furniture and equipment/Recognized losses due to decrease in value	boi_met:md348	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x829	boi_MU:x1	N/A	N/A
6.9	Office furniture and equipment/Subtractions	boi_met:md350	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x829	boi_MU:x1	N/A	N/A
6.10	Office furniture and equipment/Other	boi_met:md357	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x829	boi_MU:x1	N/A	N/A
6.11	Office furniture and equipment/Cumulative depreciation as of Dec. 31	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x829	N/A	N/A	N/A
6.12	Office furniture and equipment/Amortized balance as of Dec. 31	boi_met:mi1	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x829	N/A	boi_RP:x24	N/A
6.13	Office furniture and equipment/Avg. weighted depreciation rate in pct.	boi_met:md353	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x829	boi_MU:x1	boi_RP:x24	N/A
8.1	Other equipment/Cost as of Jan. 1	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x830	N/A	N/A	boi_RP:x22
8.2	Other equipment/Additions	boi_met:md340	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x830	boi_MU:x1	N/A	N/A
8.3	Other equipment/Subtractions	boi_met:md342	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x830	boi_MU:x1	N/A	N/A
8.4	Other equipment/Other	boi_met:md358	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x830	boi_MU:x1	N/A	N/A
8.5	Other equipment/Cost as of Dec. 31	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x830	N/A	N/A	N/A
8.6	Other equipment/Cumulative depreciation as of Jan. 1	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x830	N/A	N/A	boi_RP:x22
8.7	Other equipment/Depreciation	boi_met:md347	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x830	boi_MU:x1	N/A	N/A
8.8	Other equipment/Recognized losses due to decrease in value	boi_met:md348	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x830	boi_MU:x1	N/A	N/A
8.9	Other equipment/Subtractions	boi_met:md350	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x830	boi_MU:x1	N/A	N/A
8.10	Other equipment/Other	boi_met:md357	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x830	boi_MU:x1	N/A	N/A
8.11	Other equipment/Cumulative depreciation as of Dec. 31	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x830	N/A	N/A	N/A
8.12	Other equipment/Amortized balance as of Dec. 31	boi_met:mi1	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x830	N/A	boi_RP:x24	N/A
8.13	Other equipment/Avg. weighted depreciation rate in pct.	boi_met:md353	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x830	boi_MU:x1	boi_RP:x24	N/A
9.1	Total/Cost as of Jan. 1	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x6	N/A	N/A	boi_RP:x22
9.2	Total/Additions	boi_met:md340	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x6	boi_MU:x1	N/A	N/A
9.3	Total/Subtractions	boi_met:md342	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x6	boi_MU:x1	N/A	N/A
9.4	Total/Other	boi_met:md358	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x6	boi_MU:x1	N/A	N/A
9.5	Total/Cost as of Dec. 31	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x6	N/A	N/A	N/A
9.6	Total/Cumulative depreciation as of Jan. 1	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x6	N/A	N/A	boi_RP:x22
9.7	Total/Depreciation	boi_met:md347	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x6	boi_MU:x1	N/A	N/A
9.8	Total/Recognized losses due to decrease in value	boi_met:md348	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x6	boi_MU:x1	N/A	N/A
9.9	Total/Subtractions	boi_met:md350	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x6	boi_MU:x1	N/A	N/A
9.10	Total/Other	boi_met:md357	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x6	boi_MU:x1	N/A	N/A
9.11	Total/Cumulative depreciation as of Dec. 31	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x6	N/A	N/A	N/A
9.12	Total/Amortized balance as of Dec. 31	boi_met:mi1	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x6	N/A	boi_RP:x24	N/A
9.13	Total/Avg. weighted depreciation rate in pct.	boi_met:md353	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x2	boi_MC:x6	boi_MU:x1	boi_RP:x24	N/A
r10.1	Solo/Cost as of Jan. 1	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	N/A	N/A	N/A	boi_RP:x22
r10.2	Solo/Additions	boi_met:md340	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	N/A	boi_MU:x1	N/A	N/A
r10.3	Solo/Subtractions	boi_met:md342	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	N/A	boi_MU:x1	N/A	N/A
r10.4	Solo/Other	boi_met:md358	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	N/A	boi_MU:x1	N/A	N/A
r10.5	Solo/Cost as of Dec. 31	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	N/A	N/A	N/A	N/A
r10.6	Solo/Cumulative depreciation as of Jan. 1	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	N/A	N/A	N/A	boi_RP:x22
r10.7	Solo/Depreciation	boi_met:md347	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	N/A	boi_MU:x1	N/A	N/A
r10.8	Solo/Recognized losses due to decrease in value	boi_met:md348	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	N/A	boi_MU:x1	N/A	N/A
r10.9	Solo/Subtractions	boi_met:md350	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	N/A	boi_MU:x1	N/A	N/A
r10.10	Solo/Other	boi_met:md357	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	N/A	boi_MU:x1	N/A	N/A
r10.11	Solo/Cumulative depreciation as of Dec. 31	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	N/A	N/A	N/A	N/A
r10.12	Solo/Amortized balance as of Dec. 31	boi_met:mi1	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	N/A	N/A	boi_RP:x24	N/A
r10.13	Solo/Avg. weighted depreciation rate in pct.	boi_met:md353	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	N/A	boi_MU:x1	boi_RP:x24	N/A
10.1	Buildings and land/Cost as of Jan. 1	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x831	N/A	N/A	boi_RP:x22
10.2	Buildings and land/Additions	boi_met:md340	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x831	boi_MU:x1	N/A	N/A
10.3	Buildings and land/Subtractions	boi_met:md342	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x831	boi_MU:x1	N/A	N/A
10.4	Buildings and land/Other	boi_met:md358	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x831	boi_MU:x1	N/A	N/A
10.5	Buildings and land/Cost as of Dec. 31	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x831	N/A	N/A	N/A
10.6	Buildings and land/Cumulative depreciation as of Jan. 1	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x831	N/A	N/A	boi_RP:x22
10.7	Buildings and land/Depreciation	boi_met:md347	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x831	boi_MU:x1	N/A	N/A
10.8	Buildings and land/Recognized losses due to decrease in value	boi_met:md348	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x831	boi_MU:x1	N/A	N/A
10.9	Buildings and land/Subtractions	boi_met:md350	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x831	boi_MU:x1	N/A	N/A
10.10	Buildings and land/Other	boi_met:md357	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x831	boi_MU:x1	N/A	N/A
10.11	Buildings and land/Cumulative depreciation as of Dec. 31	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x831	N/A	N/A	N/A
10.12	Buildings and land/Amortized balance as of Dec. 31	boi_met:mi1	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x831	N/A	boi_RP:x24	N/A
10.13	Buildings and land/Avg. weighted depreciation rate in pct.	boi_met:md353	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x831	boi_MU:x1	boi_RP:x24	N/A
11.1	Installations and improvements in rented property/Cost as of Jan. 1	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x832	N/A	N/A	boi_RP:x22
11.2	Installations and improvements in rented property/Additions	boi_met:md340	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x832	boi_MU:x1	N/A	N/A
11.3	Installations and improvements in rented property/Subtractions	boi_met:md342	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x832	boi_MU:x1	N/A	N/A
11.4	Installations and improvements in rented property/Other	boi_met:md358	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x832	boi_MU:x1	N/A	N/A
11.5	Installations and improvements in rented property/Cost as of Dec. 31	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x832	N/A	N/A	N/A
11.6	Installations and improvements in rented property/Cumulative depreciation as of Jan. 1	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x832	N/A	N/A	boi_RP:x22
11.7	Installations and improvements in rented property/Depreciation	boi_met:md347	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x832	boi_MU:x1	N/A	N/A
11.8	Installations and improvements in rented property/Recognized losses due to decrease in value	boi_met:md348	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x832	boi_MU:x1	N/A	N/A
11.9	Installations and improvements in rented property/Subtractions	boi_met:md350	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x832	boi_MU:x1	N/A	N/A
11.10	Installations and improvements in rented property/Other	boi_met:md357	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x832	boi_MU:x1	N/A	N/A
11.11	Installations and improvements in rented property/Cumulative depreciation as of Dec. 31	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x832	N/A	N/A	N/A
11.12	Installations and improvements in rented property/Amortized balance as of Dec. 31	boi_met:mi1	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x832	N/A	boi_RP:x24	N/A
11.13	Installations and improvements in rented property/Avg. weighted depreciation rate in pct.	boi_met:md353	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x832	boi_MU:x1	boi_RP:x24	N/A
12.1	Computers and equipment/Cost as of Jan. 1	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x676	N/A	N/A	boi_RP:x22
12.2	Computers and equipment/Additions	boi_met:md340	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x676	boi_MU:x1	N/A	N/A
12.3	Computers and equipment/Subtractions	boi_met:md342	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x676	boi_MU:x1	N/A	N/A
12.4	Computers and equipment/Other	boi_met:md358	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x676	boi_MU:x1	N/A	N/A
12.5	Computers and equipment/Cost as of Dec. 31	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x676	N/A	N/A	N/A
12.6	Computers and equipment/Cumulative depreciation as of Jan. 1	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x676	N/A	N/A	boi_RP:x22
12.7	Computers and equipment/Depreciation	boi_met:md347	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x676	boi_MU:x1	N/A	N/A
12.8	Computers and equipment/Recognized losses due to decrease in value	boi_met:md348	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x676	boi_MU:x1	N/A	N/A
12.9	Computers and equipment/Subtractions	boi_met:md350	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x676	boi_MU:x1	N/A	N/A
12.10	Computers and equipment/Other	boi_met:md357	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x676	boi_MU:x1	N/A	N/A
12.11	Computers and equipment/Cumulative depreciation as of Dec. 31	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x676	N/A	N/A	N/A
12.12	Computers and equipment/Amortized balance as of Dec. 31	boi_met:mi1	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x676	N/A	boi_RP:x24	N/A
12.13	Computers and equipment/Avg. weighted depreciation rate in pct.	boi_met:md353	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x676	boi_MU:x1	boi_RP:x24	N/A
13.1	Software costs/Cost as of Jan. 1	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x651	N/A	N/A	boi_RP:x22
13.2	Software costs/Additions	boi_met:md340	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x651	boi_MU:x1	N/A	N/A
13.3	Software costs/Subtractions	boi_met:md342	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x651	boi_MU:x1	N/A	N/A
13.4	Software costs/Other	boi_met:md358	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x651	boi_MU:x1	N/A	N/A
13.5	Software costs/Cost as of Dec. 31	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x651	N/A	N/A	N/A
13.6	Software costs/Cumulative depreciation as of Jan. 1	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x651	N/A	N/A	boi_RP:x22
13.7	Software costs/Depreciation	boi_met:md347	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x651	boi_MU:x1	N/A	N/A
13.8	Software costs/Recognized losses due to decrease in value	boi_met:md348	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x651	boi_MU:x1	N/A	N/A
13.9	Software costs/Subtractions	boi_met:md350	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x651	boi_MU:x1	N/A	N/A
13.10	Software costs/Other	boi_met:md357	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x651	boi_MU:x1	N/A	N/A
13.11	Software costs/Cumulative depreciation as of Dec. 31	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x651	N/A	N/A	N/A
13.12	Software costs/Amortized balance as of Dec. 31	boi_met:mi1	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x651	N/A	boi_RP:x24	N/A
13.13	Software costs/Avg. weighted depreciation rate in pct.	boi_met:md353	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x651	boi_MU:x1	boi_RP:x24	N/A
14.1	Motor vehicles/Cost as of Jan. 1	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x828	N/A	N/A	boi_RP:x22
14.2	Motor vehicles/Additions	boi_met:md340	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x828	boi_MU:x1	N/A	N/A
14.3	Motor vehicles/Subtractions	boi_met:md342	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x828	boi_MU:x1	N/A	N/A
14.4	Motor vehicles/Other	boi_met:md358	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x828	boi_MU:x1	N/A	N/A
14.5	Motor vehicles/Cost as of Dec. 31	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x828	N/A	N/A	N/A
14.6	Motor vehicles/Cumulative depreciation as of Jan. 1	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x828	N/A	N/A	boi_RP:x22
14.7	Motor vehicles/Depreciation	boi_met:md347	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x828	boi_MU:x1	N/A	N/A
14.8	Motor vehicles/Recognized losses due to decrease in value	boi_met:md348	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x828	boi_MU:x1	N/A	N/A
14.9	Motor vehicles/Subtractions	boi_met:md350	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x828	boi_MU:x1	N/A	N/A
14.10	Motor vehicles/Other	boi_met:md357	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x828	boi_MU:x1	N/A	N/A
14.11	Motor vehicles/Cumulative depreciation as of Dec. 31	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x828	N/A	N/A	N/A
14.12	Motor vehicles/Amortized balance as of Dec. 31	boi_met:mi1	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x828	N/A	boi_RP:x24	N/A
14.13	Motor vehicles/Avg. weighted depreciation rate in pct.	boi_met:md353	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x828	boi_MU:x1	boi_RP:x24	N/A
15.1	Office furniture and equipment/Cost as of Jan. 1	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x829	N/A	N/A	boi_RP:x22
15.2	Office furniture and equipment/Additions	boi_met:md340	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x829	boi_MU:x1	N/A	N/A
15.3	Office furniture and equipment/Subtractions	boi_met:md342	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x829	boi_MU:x1	N/A	N/A
15.4	Office furniture and equipment/Other	boi_met:md358	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x829	boi_MU:x1	N/A	N/A
15.5	Office furniture and equipment/Cost as of Dec. 31	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x829	N/A	N/A	N/A
15.6	Office furniture and equipment/Cumulative depreciation as of Jan. 1	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x829	N/A	N/A	boi_RP:x22
15.7	Office furniture and equipment/Depreciation	boi_met:md347	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x829	boi_MU:x1	N/A	N/A
15.8	Office furniture and equipment/Recognized losses due to decrease in value	boi_met:md348	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x829	boi_MU:x1	N/A	N/A
15.9	Office furniture and equipment/Subtractions	boi_met:md350	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x829	boi_MU:x1	N/A	N/A
15.10	Office furniture and equipment/Other	boi_met:md357	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x829	boi_MU:x1	N/A	N/A
15.11	Office furniture and equipment/Cumulative depreciation as of Dec. 31	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x829	N/A	N/A	N/A
15.12	Office furniture and equipment/Amortized balance as of Dec. 31	boi_met:mi1	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x829	N/A	boi_RP:x24	N/A
15.13	Office furniture and equipment/Avg. weighted depreciation rate in pct.	boi_met:md353	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x829	boi_MU:x1	boi_RP:x24	N/A
16.1	Other equipment/Cost as of Jan. 1	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x830	N/A	N/A	boi_RP:x22
16.2	Other equipment/Additions	boi_met:md340	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x830	boi_MU:x1	N/A	N/A
16.3	Other equipment/Subtractions	boi_met:md342	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x830	boi_MU:x1	N/A	N/A
16.4	Other equipment/Other	boi_met:md358	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x830	boi_MU:x1	N/A	N/A
16.5	Other equipment/Cost as of Dec. 31	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x830	N/A	N/A	N/A
16.6	Other equipment/Cumulative depreciation as of Jan. 1	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x830	N/A	N/A	boi_RP:x22
16.7	Other equipment/Depreciation	boi_met:md347	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x830	boi_MU:x1	N/A	N/A
16.8	Other equipment/Recognized losses due to decrease in value	boi_met:md348	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x830	boi_MU:x1	N/A	N/A
16.9	Other equipment/Subtractions	boi_met:md350	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x830	boi_MU:x1	N/A	N/A
16.10	Other equipment/Other	boi_met:md357	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x830	boi_MU:x1	N/A	N/A
16.11	Other equipment/Cumulative depreciation as of Dec. 31	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x830	N/A	N/A	N/A
16.12	Other equipment/Amortized balance as of Dec. 31	boi_met:mi1	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x830	N/A	boi_RP:x24	N/A
16.13	Other equipment/Avg. weighted depreciation rate in pct.	boi_met:md353	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x830	boi_MU:x1	boi_RP:x24	N/A
17.1	Total/Cost as of Jan. 1	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x6	N/A	N/A	boi_RP:x22
17.2	Total/Additions	boi_met:md340	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x6	boi_MU:x1	N/A	N/A
17.3	Total/Subtractions	boi_met:md342	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x6	boi_MU:x1	N/A	N/A
17.4	Total/Other	boi_met:md358	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x6	boi_MU:x1	N/A	N/A
17.5	Total/Cost as of Dec. 31	boi_met:mi339	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x6	N/A	N/A	N/A
17.6	Total/Cumulative depreciation as of Jan. 1	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x6	N/A	N/A	boi_RP:x22
17.7	Total/Depreciation	boi_met:md347	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x6	boi_MU:x1	N/A	N/A
17.8	Total/Recognized losses due to decrease in value	boi_met:md348	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x6	boi_MU:x1	N/A	N/A
17.9	Total/Subtractions	boi_met:md350	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x6	boi_MU:x1	N/A	N/A
17.10	Total/Other	boi_met:md357	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x6	boi_MU:x1	N/A	N/A
17.11	Total/Cumulative depreciation as of Dec. 31	boi_met:mi346	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x6	N/A	N/A	N/A
17.12	Total/Amortized balance as of Dec. 31	boi_met:mi1	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x6	N/A	boi_RP:x24	N/A
17.13	Total/Avg. weighted depreciation rate in pct.	boi_met:md353	xbrli:monetaryItemType	instant	boi_BC:x1	boi_CS:x1	boi_MC:x6	boi_MU:x1	boi_RP:x24	N/A