Debt - Short-Term Debt (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2022	Dec. 31, 2021
Short-term Debt
Other	$ 0	$ 101
Short-term borrowings	$ 2,422	3,911
Commercial paper \| FIS credit agreements \| Euro-commercial paper notes ("ECP Notes")
Short-term Debt
Short term debt, weighted average interest rate	0.80%
Maturities	183 days
Commercial paper	$ 1,488	1,723
Commercial paper \| FIS credit agreements \| U.S. commercial paper notes ("USCP Notes")
Short-term Debt
Short term debt, weighted average interest rate	3.50%
Maturities	397 days
Commercial paper	$ 934	$ 2,087

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Amount of borrowings classified as other, maturing within one year or the normal operating cycle, if longer.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Weighted average interest rate of short-term debt outstanding calculated at point in time.

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