Debt - Short-Term Debt (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2023	Dec. 31, 2022
Short-term Debt
Other	$ 0	$ 42
Short-term borrowings	$ 5,144	3,797
Commercial paper \| FIS credit agreements \| Euro-commercial paper notes ("ECP Notes")
Short-term Debt
Short term debt, weighted average interest rate	3.60%
Maturities	183 days
Commercial paper	$ 2,851	2,054
Commercial paper \| FIS credit agreements \| U.S. commercial paper notes ("USCP Notes")
Short-term Debt
Short term debt, weighted average interest rate	5.50%
Maturities	397 days
Commercial paper	$ 2,293	$ 1,701

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.

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
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-Name Accounting Standards Codification
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- Definition

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.

+ References

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-Topic 852
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- Definition

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.

+ References

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

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