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Debt - Narrative (Details) - USD ($)		1 Months Ended	6 Months Ended
	Jul. 13, 2022	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	Mar. 02, 2021
Debt Instrument
Debt, weighted average interest rate			1.20%
Repayments of long-term debt			$ 31,358,000,000	$ 27,696,000,000
Loss on extinguishment of debt			0	$ 528,000,000
Difference in carrying value and fair value of long term debt			1,355,000,000		$ 570,000,000
Revolving Credit Facility
Debt Instrument
Borrowing capacity remaining			1,559,000,000
Line of credit facility, capacity backstopped			3,642,000,000
FIS credit agreements
Debt Instrument
Unamortized discount (premium), net			$ (471,000,000)
Senior notes
Debt Instrument
Repayments of long-term debt		$ 5,100,000,000
Loss on extinguishment of debt		$ 528,000,000
Senior notes | Subsequent Event
Debt Instrument
Repayments of long-term debt	$ 2,500,000,000
Senior notes | Minimum
Debt Instrument
Debt instrument, stated percentage		0.00%
Senior notes | Minimum | Subsequent Event
Debt Instrument
Debt instrument, stated percentage	4.50%
Senior notes | Maximum
Debt Instrument
Debt instrument, stated percentage		5.00%
Senior notes | Maximum | Subsequent Event
Debt Instrument
Debt instrument, stated percentage	5.60%
Senior notes | Senior USD Notes
Debt Instrument
Repayments of long-term debt		$ 3,529,000,000
Principal amount of debt						$ 5,500,000,000
Senior notes | Senior USD Notes | Minimum
Debt Instrument
Debt instrument, stated percentage			0.40%			0.40%
Senior notes | Senior USD Notes | Maximum
Debt Instrument
Debt instrument, stated percentage			4.80%			3.10%
Senior notes | Senior Euro Notes
Debt Instrument
Repayments of long-term debt		600,000,000
Senior notes | Senior Euro Notes | Minimum
Debt Instrument
Debt instrument, stated percentage			0.10%
Senior notes | Senior Euro Notes | Maximum
Debt Instrument
Debt instrument, stated percentage			3.00%
Senior notes | Senior GBP Notes
Debt Instrument
Repayments of long-term debt		871,000,000
Senior notes | Senior GBP Notes | Minimum
Debt Instrument
Debt instrument, stated percentage			2.30%
Senior notes | Senior GBP Notes | Maximum
Debt Instrument
Debt instrument, stated percentage			3.40%
Senior notes | Senior Euro Floating Rate Notes
Debt Instrument
Repayments of long-term debt		$ 66,000,000

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Accumulated Difference Between Fair Value And Carrying Value of Long Term Debt

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount, after accumulated amortization, of debt discount (premium).

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