Acquisitions - Schedule of Supplemental Pro Forma Results of Operations (Details) - Issuer Solutions Acquisition - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Business Combination | ||||
| Revenue | $ 3,377 | $ 3,231 | $ 6,727 | $ 6,361 |
| Net earnings (loss) attributable to FIS | $ 261 | $ 65 | $ 448 | $ 2,250 |
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- Definition Amount, after tax, of pro forma income (loss) of combined entity as if acquisition date of business combination occurred as of beginning of period. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of pro forma revenue of combined entity as if acquisition date of business combination occurred as of beginning of period. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Details
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