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Debt - Schedule of Principal Maturities of Long-term Debt (Details) - FIS Credit Agreement
$ in Millions
Dec. 31, 2023
USD ($)
Debt Instrument  
2024 $ 1,359
2025 1,463
2026 1,393
2027 1,880
2028 1,669
Thereafter 7,264
Total principal payments 15,028
Other debt per the long-term debt table (614)
Financing obligations for certain hardware and software (96)
Total long-term debt, including current portion $ 14,318