| r0.C0200 | s2md_a2.root/DB | | | | s2c_LB:x5029 | s2c_GA:x77 | N/A | N/A |
| r0.C0210 | s2md_a2.root/DC | | | | s2c_LB:x5030 | s2c_GA:x77 | N/A | N/A |
| r0.C0220 | s2md_a2.root/Total | | | | N/A | s2c_GA:x77 | N/A | N/A |
| r0.C0230 | s2md_a2.root/DB | | | | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| r0.C0240 | s2md_a2.root/DC | | | | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| r0.C0250 | s2md_a2.root/Total | | | | N/A | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| r0.C0260 | s2md_a2.root/DB | | | | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| r0.C0270 | s2md_a2.root/DC | | | | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| r0.C0280 | s2md_a2.root/Total | | | | N/A | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| R0015.C0200 | Number of active XB IORPs/DB | s2md_met:ii5016 | xbrli:integerItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | N/A | N/A |
| R0015.C0210 | Number of active XB IORPs/DC | s2md_met:ii5016 | xbrli:integerItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | N/A | N/A |
| R0015.C0220 | Number of active XB IORPs/Total | s2md_met:ii5016 | xbrli:integerItemType | instant | N/A | s2c_GA:x77 | N/A | N/A |
| R0015.C0230 | Number of active XB IORPs/DB | s2md_met:ii5016 | xbrli:integerItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| R0015.C0240 | Number of active XB IORPs/DC | s2md_met:ii5016 | xbrli:integerItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| R0015.C0250 | Number of active XB IORPs/Total | s2md_met:ii5016 | xbrli:integerItemType | instant | N/A | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| R0015.C0260 | Number of active XB IORPs/DB | s2md_met:ii5016 | xbrli:integerItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| R0015.C0270 | Number of active XB IORPs/DC | s2md_met:ii5016 | xbrli:integerItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| R0015.C0280 | Number of active XB IORPs/Total | s2md_met:ii5016 | xbrli:integerItemType | instant | N/A | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| R0020.C0200 | Number of sponsoring undertakings/DB | s2md_met:ii5039 | xbrli:integerItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | N/A | N/A |
| R0020.C0210 | Number of sponsoring undertakings/DC | s2md_met:ii5039 | xbrli:integerItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | N/A | N/A |
| R0020.C0220 | Number of sponsoring undertakings/Total | s2md_met:ii5039 | xbrli:integerItemType | instant | N/A | s2c_GA:x77 | N/A | N/A |
| R0020.C0230 | Number of sponsoring undertakings/DB | s2md_met:ii5039 | xbrli:integerItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| R0020.C0240 | Number of sponsoring undertakings/DC | s2md_met:ii5039 | xbrli:integerItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| R0020.C0250 | Number of sponsoring undertakings/Total | s2md_met:ii5039 | xbrli:integerItemType | instant | N/A | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| R0020.C0260 | Number of sponsoring undertakings/DB | s2md_met:ii5039 | xbrli:integerItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| R0020.C0270 | Number of sponsoring undertakings/DC | s2md_met:ii5039 | xbrli:integerItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| R0020.C0280 | Number of sponsoring undertakings/Total | s2md_met:ii5039 | xbrli:integerItemType | instant | N/A | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| R0030.C0200 | Number of multiple-employer XB IORPs/DB | s2md_met:ii5033 | xbrli:integerItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | N/A | N/A |
| R0030.C0210 | Number of multiple-employer XB IORPs/DC | s2md_met:ii5033 | xbrli:integerItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | N/A | N/A |
| R0030.C0220 | Number of multiple-employer XB IORPs/Total | s2md_met:ii5033 | xbrli:integerItemType | instant | N/A | s2c_GA:x77 | N/A | N/A |
| R0030.C0230 | Number of multiple-employer XB IORPs/DB | s2md_met:ii5033 | xbrli:integerItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| R0030.C0240 | Number of multiple-employer XB IORPs/DC | s2md_met:ii5033 | xbrli:integerItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| R0030.C0250 | Number of multiple-employer XB IORPs/Total | s2md_met:ii5033 | xbrli:integerItemType | instant | N/A | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| R0030.C0260 | Number of multiple-employer XB IORPs/DB | s2md_met:ii5033 | xbrli:integerItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| R0030.C0270 | Number of multiple-employer XB IORPs/DC | s2md_met:ii5033 | xbrli:integerItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| R0030.C0280 | Number of multiple-employer XB IORPs/Total | s2md_met:ii5033 | xbrli:integerItemType | instant | N/A | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| r4.C0200 | Assets/DB | | | | s2c_LB:x5029 | s2c_GA:x77 | N/A | s2c_AM:x80 |
| r4.C0210 | Assets/DC | | | | s2c_LB:x5030 | s2c_GA:x77 | N/A | s2c_AM:x80 |
| r4.C0220 | Assets/Total | | | | N/A | s2c_GA:x77 | N/A | s2c_AM:x80 |
| r4.C0230 | Assets/DB | | | | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5000 | s2c_AM:x80 |
| r4.C0240 | Assets/DC | | | | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5000 | s2c_AM:x80 |
| r4.C0250 | Assets/Total | | | | N/A | s2c_GA:x77 | s2c_LB:x5000 | s2c_AM:x80 |
| r4.C0260 | Assets/DB | | | | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5002 | s2c_AM:x80 |
| r4.C0270 | Assets/DC | | | | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5002 | s2c_AM:x80 |
| r4.C0280 | Assets/Total | | | | N/A | s2c_GA:x77 | s2c_LB:x5002 | s2c_AM:x80 |
| R0040.C0200 | Total assets/DB | s2md_met:mi201 | xbrli:monetaryItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | N/A | s2c_AM:x80 |
| R0040.C0210 | Total assets/DC | s2md_met:mi201 | xbrli:monetaryItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | N/A | s2c_AM:x80 |
| R0040.C0220 | Total assets/Total | s2md_met:mi201 | xbrli:monetaryItemType | instant | N/A | s2c_GA:x77 | N/A | s2c_AM:x80 |
| R0040.C0230 | Total assets/DB | s2md_met:mi201 | xbrli:monetaryItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5000 | s2c_AM:x80 |
| R0040.C0240 | Total assets/DC | s2md_met:mi201 | xbrli:monetaryItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5000 | s2c_AM:x80 |
| R0040.C0250 | Total assets/Total | s2md_met:mi201 | xbrli:monetaryItemType | instant | N/A | s2c_GA:x77 | s2c_LB:x5000 | s2c_AM:x80 |
| R0040.C0260 | Total assets/DB | s2md_met:mi201 | xbrli:monetaryItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5002 | s2c_AM:x80 |
| R0040.C0270 | Total assets/DC | s2md_met:mi201 | xbrli:monetaryItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5002 | s2c_AM:x80 |
| R0040.C0280 | Total assets/Total | s2md_met:mi201 | xbrli:monetaryItemType | instant | N/A | s2c_GA:x77 | s2c_LB:x5002 | s2c_AM:x80 |
| r6.C0200 | Liabilities/DB | | | | s2c_LB:x5029 | s2c_GA:x77 | N/A | s2c_AM:x84 |
| r6.C0210 | Liabilities/DC | | | | s2c_LB:x5030 | s2c_GA:x77 | N/A | s2c_AM:x84 |
| r6.C0220 | Liabilities/Total | | | | N/A | s2c_GA:x77 | N/A | s2c_AM:x84 |
| r6.C0230 | Liabilities/DB | | | | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5000 | s2c_AM:x84 |
| r6.C0240 | Liabilities/DC | | | | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5000 | s2c_AM:x84 |
| r6.C0250 | Liabilities/Total | | | | N/A | s2c_GA:x77 | s2c_LB:x5000 | s2c_AM:x84 |
| r6.C0260 | Liabilities/DB | | | | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5002 | s2c_AM:x84 |
| r6.C0270 | Liabilities/DC | | | | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5002 | s2c_AM:x84 |
| r6.C0280 | Liabilities/Total | | | | N/A | s2c_GA:x77 | s2c_LB:x5002 | s2c_AM:x84 |
| R0050.C0200 | Technical provisions/DB | s2md_met:mi351 | xbrli:monetaryItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | N/A | s2c_AM:x84 |
| R0050.C0210 | Technical provisions/DC | s2md_met:mi351 | xbrli:monetaryItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | N/A | s2c_AM:x84 |
| R0050.C0220 | Technical provisions/Total | s2md_met:mi351 | xbrli:monetaryItemType | instant | N/A | s2c_GA:x77 | N/A | s2c_AM:x84 |
| R0050.C0230 | Technical provisions/DB | s2md_met:mi351 | xbrli:monetaryItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5000 | s2c_AM:x84 |
| R0050.C0240 | Technical provisions/DC | s2md_met:mi351 | xbrli:monetaryItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5000 | s2c_AM:x84 |
| R0050.C0250 | Technical provisions/Total | s2md_met:mi351 | xbrli:monetaryItemType | instant | N/A | s2c_GA:x77 | s2c_LB:x5000 | s2c_AM:x84 |
| R0050.C0260 | Technical provisions/DB | s2md_met:mi351 | xbrli:monetaryItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5002 | s2c_AM:x84 |
| R0050.C0270 | Technical provisions/DC | s2md_met:mi351 | xbrli:monetaryItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5002 | s2c_AM:x84 |
| R0050.C0280 | Technical provisions/Total | s2md_met:mi351 | xbrli:monetaryItemType | instant | N/A | s2c_GA:x77 | s2c_LB:x5002 | s2c_AM:x84 |
| r8.C0200 | Member data/DB | | | | s2c_LB:x5029 | s2c_GA:x77 | N/A | N/A |
| r8.C0210 | Member data/DC | | | | s2c_LB:x5030 | s2c_GA:x77 | N/A | N/A |
| r8.C0220 | Member data/Total | | | | N/A | s2c_GA:x77 | N/A | N/A |
| r8.C0230 | Member data/DB | | | | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| r8.C0240 | Member data/DC | | | | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| r8.C0250 | Member data/Total | | | | N/A | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| r8.C0260 | Member data/DB | | | | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| r8.C0270 | Member data/DC | | | | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| r8.C0280 | Member data/Total | | | | N/A | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| R0060.C0200 | Active members/DB | s2md_met:ii5026 | xbrli:integerItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | N/A | N/A |
| R0060.C0210 | Active members/DC | s2md_met:ii5026 | xbrli:integerItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | N/A | N/A |
| R0060.C0220 | Active members/Total | s2md_met:ii5026 | xbrli:integerItemType | instant | N/A | s2c_GA:x77 | N/A | N/A |
| R0060.C0230 | Active members/DB | s2md_met:ii5026 | xbrli:integerItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| R0060.C0240 | Active members/DC | s2md_met:ii5026 | xbrli:integerItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| R0060.C0250 | Active members/Total | s2md_met:ii5026 | xbrli:integerItemType | instant | N/A | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| R0060.C0260 | Active members/DB | s2md_met:ii5026 | xbrli:integerItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| R0060.C0270 | Active members/DC | s2md_met:ii5026 | xbrli:integerItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| R0060.C0280 | Active members/Total | s2md_met:ii5026 | xbrli:integerItemType | instant | N/A | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| R0070.C0200 | Deferred members/DB | s2md_met:ii5031 | xbrli:integerItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | N/A | N/A |
| R0070.C0210 | Deferred members/DC | s2md_met:ii5031 | xbrli:integerItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | N/A | N/A |
| R0070.C0220 | Deferred members/Total | s2md_met:ii5031 | xbrli:integerItemType | instant | N/A | s2c_GA:x77 | N/A | N/A |
| R0070.C0230 | Deferred members/DB | s2md_met:ii5031 | xbrli:integerItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| R0070.C0240 | Deferred members/DC | s2md_met:ii5031 | xbrli:integerItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| R0070.C0250 | Deferred members/Total | s2md_met:ii5031 | xbrli:integerItemType | instant | N/A | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| R0070.C0260 | Deferred members/DB | s2md_met:ii5031 | xbrli:integerItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| R0070.C0270 | Deferred members/DC | s2md_met:ii5031 | xbrli:integerItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| R0070.C0280 | Deferred members/Total | s2md_met:ii5031 | xbrli:integerItemType | instant | N/A | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| R0080.C0200 | Beneficiaries/DB | s2md_met:ii5030 | xbrli:integerItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | N/A | N/A |
| R0080.C0210 | Beneficiaries/DC | s2md_met:ii5030 | xbrli:integerItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | N/A | N/A |
| R0080.C0220 | Beneficiaries/Total | s2md_met:ii5030 | xbrli:integerItemType | instant | N/A | s2c_GA:x77 | N/A | N/A |
| R0080.C0230 | Beneficiaries/DB | s2md_met:ii5030 | xbrli:integerItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| R0080.C0240 | Beneficiaries/DC | s2md_met:ii5030 | xbrli:integerItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| R0080.C0250 | Beneficiaries/Total | s2md_met:ii5030 | xbrli:integerItemType | instant | N/A | s2c_GA:x77 | s2c_LB:x5000 | N/A |
| R0080.C0260 | Beneficiaries/DB | s2md_met:ii5030 | xbrli:integerItemType | instant | s2c_LB:x5029 | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| R0080.C0270 | Beneficiaries/DC | s2md_met:ii5030 | xbrli:integerItemType | instant | s2c_LB:x5030 | s2c_GA:x77 | s2c_LB:x5002 | N/A |
| R0080.C0280 | Beneficiaries/Total | s2md_met:ii5030 | xbrli:integerItemType | instant | N/A | s2c_GA:x77 | s2c_LB:x5002 | N/A |