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Debt - Schedule of Short-Term Debt (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024
Short-term Debt |  |
Total Short-term borrowings | $ 2,075 | $ 636
Commercial Paper |  |
Short-term Debt |  |
Commercial paper | $ 4,500 |
Commercial Paper | FIS Credit Agreements | Euro-commercial paper notes ("ECP Notes") |  |
Short-term Debt |  |
Weighted average interest rate | 2.20% |
Maturities | 183 days |
Commercial paper | $ 117 | 104
Commercial Paper | FIS Credit Agreements | U.S. commercial paper notes ("USCP Notes") |  |
Short-term Debt |  |
Weighted average interest rate | 4.40% |
Maturities | 397 days |
Commercial paper | $ 1,958 | $ 532

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