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Debt - Narrative (Details) £ in Billions |  |  |  | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 08, 2024 USD ($) | Mar. 08, 2024 GBP (£) | Mar. 07, 2024 USD ($) | Mar. 07, 2024 GBP (£) | Jul. 13, 2022 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Jul. 15, 2024 EUR (€) | Mar. 01, 2024 USD ($) | May 21, 2023 EUR (€) | Mar. 01, 2023 USD ($) | Dec. 03, 2022 EUR (€)
Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Other long-term debt |  |  |  |  |  | $ (228,000,000) | $ (594,000,000) |  |  |  |  |  |
Weighted average interest rate, excluding cross currency interest rate swaps |  |  |  |  |  | 3.70% |  |  |  |  |  |  |
Weighted average interest rate |  |  |  |  |  | 2.80% |  |  |  |  |  |  |
Principal amount of debt redeemed |  |  |  |  |  | $ 33,175,000,000 | 94,444,000,000 | $ 74,304,000,000 |  |  |  |  |
Loss on extinguishment of debt |  |  |  |  |  | 174,000,000 | 0 | $ 0 |  |  |  |  |
Difference in carrying value and fair value of long term debt |  |  |  |  |  | 806,000,000 | 1,086,000,000 |  |  |  |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Additional term and revolving loan capacity in the future |  |  |  |  |  | 3,713,000,000 |  |  |  |  |  |  |
Line of credit facility, capacity backstopped |  |  |  |  |  | 636,000,000 |  |  |  |  |  |  |
Senior Commercial Paper Notes |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper |  |  |  |  |  | 4,500,000,000 |  |  |  |  |  |  |
Outstanding credit agreement |  |  |  |  |  | 151,000,000 |  |  |  |  |  |  |
ECP Notes | FIS Credit Agreement | Senior Commercial Paper Notes |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper |  |  |  |  |  | 104,000,000 | $ 2,118,000,000 |  |  |  |  |  |
Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Mandatory principal payment |  |  |  |  |  | $ 0 |  |  |  |  |  |  |
Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Senior note redemption price, percentage |  |  |  |  |  | 100.00% |  |  |  |  |  |  |
Principal amount of debt redeemed |  |  |  |  | $ 2,500,000,000 |  |  |  |  |  |  |  |
Loss on extinguishment of debt | $ 174,000,000 |  | $ 174,000,000 |  |  |  |  |  |  |  |  |  |
Senior Notes | Senior Euro Floating Rates Notes |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Face amount of debt |  |  |  |  |  |  |  |  |  |  | € 1,300,000,000 | $ 750,000,000 | € 1,000,000,000.0
Senior Notes | Senior USD Notes |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Face amount of debt |  |  |  |  |  |  |  |  |  | $ 750,000,000 |  |  |
Principal amount of debt redeemed | $ 1,500,000,000 |  | $ 1,500,000,000 |  |  |  |  |  |  |  |  |  |
Senior Notes | Senior Euro Notes |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Face amount of debt | € |  |  |  |  |  |  |  |  | € 500,000,000 |  |  |  |
Debt instrument, stated percentage |  |  |  |  |  |  |  |  | 1.10% |  |  |  |
Senior Notes | Senior GBP Notes |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of debt redeemed | £ |  | £ 1.0 |  | £ 1.0 |  |  |  |  |  |  |  |  |
Senior Notes | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Make whole amount, trigger period prior to maturity |  |  |  |  |  | 1 month |  |  |  |  |  |  |
Debt instrument, stated percentage |  |  |  |  | 4.50% |  |  |  |  |  |  |  |
Senior Notes | Minimum | Senior Euro Floating Rates Notes |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, stated percentage | 2.25% | 2.25% | 2.25% | 2.25% |  |  |  |  |  |  |  |  |
Senior Notes | Minimum | Senior USD Notes |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, stated percentage |  |  |  |  |  | 1.20% |  |  |  |  |  |  |
Senior Notes | Minimum | Senior Euro Notes |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, stated percentage |  |  |  |  |  | 0.60% |  |  |  |  |  |  |
Senior Notes | Minimum | Senior GBP Notes |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, stated percentage |  |  |  |  |  | 2.30% |  |  |  |  |  |  |
Senior Notes | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Make whole amount, trigger period prior to maturity |  |  |  |  |  | 6 months |  |  |  |  |  |  |
Debt instrument, stated percentage |  |  |  |  | 5.60% |  |  |  |  |  |  |  |
Senior Notes | Maximum | Senior Euro Floating Rates Notes |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, stated percentage | 5.625% | 5.625% | 5.625% | 5.625% |  |  |  |  |  |  |  |  |
Senior Notes | Maximum | Senior USD Notes |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, stated percentage |  |  |  |  |  | 5.60% |  |  |  |  |  |  |
Senior Notes | Maximum | Senior Euro Notes |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, stated percentage |  |  |  |  |  | 3.00% |  |  |  |  |  |  |
Senior Notes | Maximum | Senior GBP Notes |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, stated percentage |  |  |  |  |  | 3.40% |  |  |  |  |  |  |

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