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Segment Information - Schedule of Acquisition, Integration and Other Costs (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Segment Reporting Information |  |  |
Acquisition and integration | $ 136 | $ 88 | $ 48
Incremental stock compensation directly attributable to specific programs | 0 | 3 | 34
Total acquisition, integration and other costs | 689 | 624 | 482
One-Time Performance-Related Awards |  |  |
Segment Reporting Information |  |  |
Incremental stock compensation directly attributable to specific programs | 33 | 58 | 15
Worldpay Merchant Solutions |  |  |
Segment Reporting Information |  |  |
Separation of the Worldpay Merchant Solutions business | 54 | 148 | 17
Enterprise Costs Control and Other Initiatives |  |  |
Segment Reporting Information |  |  |
Other, including divestiture-related expenses and enterprise cost control and other initiatives | 62 | 12 | 20
Platform Initiatives | Enterprise Cost Control Initiatives and Changes in Senior Management |  |  |
Segment Reporting Information |  |  |
Severance and other termination expenses | 247 | 56 | 70
Future Forward | Platform Modernization |  |  |
Segment Reporting Information |  |  |
Enterprise transformation, including Future Forward and platform modernization | $ 157 | $ 262 | $ 312

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