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Summary of Significant Accounting Policies - Narrative (Details) shares in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 USD ($) contract shares | Dec. 31, 2020 USD ($) contract shares | Dec. 31, 2019 shares
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |
Cash flow hedge contracts | contract | 0 | 0 |
Contract assets | $ 238 | $ 186 |
Goodwill impairment loss |  | 94 |
Impairment of held for use assets |  | 42 |
Operating lease impairment loss |  | $ 30 |
Purchase of common shares (in shares) (current year less than) | shares | 2 | 1 | 1
Merchant Solutions |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |
Reporting unit, percentage of fair value in excess of carrying amount |  | 4.00% |
Goodwill impairment loss |  | $ 0 |
Corporate and Other |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |
Goodwill impairment loss |  | $ 94 |
Buildings |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |
Fixed asset, estimated useful life | 30 years |  |
Minimum |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |
Payment or collection period | 1 day |  |
Lease renewal term | 1 year |  |
Minimum | Furniture and fixture |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |
Fixed asset, estimated useful life | 3 years |  |
Maximum |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |
Payment or collection period | 3 days |  |
Lease renewal term | 5 years |  |
Maximum | Furniture and fixture |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |
Fixed asset, estimated useful life | 7 years |  |
Customer relationships |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |
Intangible assets, estimated useful lives | 10 years |  |
Trademarks | Maximum |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |
Intangible assets, estimated useful lives | 5 years |  |
Software | Minimum |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |
Intangible assets, estimated useful lives | 1 year |  |
Software | Maximum |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |
Intangible assets, estimated useful lives | 10 years |  |
Internally developed software | Minimum |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |
Intangible assets, estimated useful lives | 3 years |  |
Internally developed software | Maximum |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |
Intangible assets, estimated useful lives | 10 years |  |

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