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Debt - Short-term Debt (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Short-term Debt
Other	$ 165	$ 144
Total Short-term borrowings	$ 2,537	2,750
Euro-commercial paper notes ("ECP Notes") | Commercial paper | FIS credit agreements
Short-term Debt
Short term debt, weighted average interest rate	(0.50%)
Maturities	183 days
Commercial paper	$ 243	861
U.S. commercial paper notes ("USCP Notes") | Commercial paper | FIS credit agreements
Short-term Debt
Short term debt, weighted average interest rate	0.30%
Maturities	397 days
Commercial paper	$ 2,129	$ 1,745

X

- Definition

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

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

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