| SourceName | Accounting Changes:Taxonomy Technical Improvement; Film Costs; Improvements-Credit Losses; Long-duration Insurance; Share-Based Consideration to Customer; Tax Simplification | http://fasb.org/srt/role/changeNote/changeNote |
| TaxonomyVersion | 2020 | http://fasb.org/srt/role/changeNote/changeNote |
| ChangeDate | 2019-12 | http://fasb.org/srt/role/changeNote/changeNote |
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| PreviousDocumentation | The entire disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items. | http://fasb.org/srt/role/changeNote/changeNote |
| Source_ASU_Number | 2019-12 2019-11 2019-08 2019-02 2018-12 | http://fasb.org/srt/role/changeNote/changeNote |
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