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Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Disaggregation of Revenue [Line Items]
Revenue	$ 5,263	$ 5,215	$ 15,909	$ 15,205
Operating segments
Disaggregation of Revenue [Line Items]
Revenue	4,919	4,881	14,904	14,208
Operating segments | Merchant Segment
Disaggregation of Revenue [Line Items]
Revenue	2,586	2,469	7,602	7,132
Operating segments | Financial Segment
Disaggregation of Revenue [Line Items]
Revenue	2,333	2,412	7,302	7,076
Corporate and Other
Disaggregation of Revenue [Line Items]
Revenue	$ 344	$ 334	$ 1,005	$ 997
Geographic Concentration Risk | Non-US | Revenue from Contract with Customer Benchmark
Disaggregation of Revenue [Line Items]
Percentage of concentration risk	16.00%	15.00%	15.00%	15.00%
Small Business | Operating segments | Merchant Segment
Disaggregation of Revenue [Line Items]
Revenue	$ 1,741	$ 1,627	$ 5,109	$ 4,719
Enterprise | Operating segments | Merchant Segment
Disaggregation of Revenue [Line Items]
Revenue	580	558	1,669	1,563
Processing | Operating segments | Merchant Segment
Disaggregation of Revenue [Line Items]
Revenue	265	284	824	850
Digital Payments | Operating segments | Financial Segment
Disaggregation of Revenue [Line Items]
Revenue	939	987	2,985	2,894
Issuing | Operating segments | Financial Segment
Disaggregation of Revenue [Line Items]
Revenue	802	789	2,492	2,316
Banking | Operating segments | Financial Segment
Disaggregation of Revenue [Line Items]
Revenue	$ 592	$ 636	$ 1,825	$ 1,866

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