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Summary of Significant Accounting Policies - Narrative (Details) - USD ($) shares in Millions |  | 12 Months Ended
--- | --- | ---
Jan. 31, 2024 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |  |
Contract assets |  | $ 349,000,000 | $ 220,000,000 |
Contract assets, noncurrent |  | 233,000,000 | 308,000,000 |
Impairment of intangible assets, finite-lived |  | 0 | 0 | $ 0
Impairment of held for use assets |  | $ 0 | $ 0 | $ 0
Recognized compensation cost award service period |  | 3 years |  |
Purchase of common shares (in shares) |  |  |  | 2
Discontinued Operations, Held-for-Sale | Worldpay Merchant Solutions |  |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |  |
Disposal group, including discontinued operation, contingent consideration | $ 1,000,000,000.0 |  |  |
Stock Options |  |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |  |
Purchase of common shares (in shares) |  | 5 | 7 | 8
Buildings |  |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |  |
Fixed asset, estimated useful life |  | 30 years |  |
Customer relationships |  |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |  |
Intangible assets, estimated useful lives |  | 10 years |  |
Maximum |  |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |  |
Lease renewal term |  | 5 years |  |
Maximum | Furniture and fixture |  |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |  |
Fixed asset, estimated useful life |  | 7 years |  |
Maximum | Trademarks |  |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |  |
Intangible assets, estimated useful lives |  | 10 years |  |
Maximum | Software |  |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |  |
Intangible assets, estimated useful lives |  | 10 years |  |
Maximum | Internal-use software |  |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |  |
Intangible assets, estimated useful lives |  | 10 years |  |
Maximum | Internally developed software |  |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |  |
Intangible assets, estimated useful lives |  | 10 years |  |
Minimum |  |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |  |
Lease renewal term |  | 1 year |  |
Minimum | Furniture and fixture |  |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |  |
Fixed asset, estimated useful life |  | 3 years |  |
Minimum | Software |  |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |  |
Intangible assets, estimated useful lives |  | 1 year |  |
Minimum | Internal-use software |  |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |  |
Intangible assets, estimated useful lives |  | 3 years |  |
Minimum | Internally developed software |  |  |  |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |  |
Intangible assets, estimated useful lives |  | 3 years |  |

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