Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Disaggregation of Revenue [Line Items]
Revenue	$ 5,292	$ 5,516	$ 10,319	$ 10,646
Revenue not from contract with customer	343	377	667	708
Operating segments
Disaggregation of Revenue [Line Items]
Revenue	4,963	5,196	9,638	9,985
Operating segments \| Merchant Segment
Disaggregation of Revenue [Line Items]
Revenue	2,608	2,644	4,981	5,016
Operating segments \| Financial Segment
Disaggregation of Revenue [Line Items]
Revenue	2,355	2,552	4,657	4,969
Corporate and Other
Disaggregation of Revenue [Line Items]
Revenue	$ 329	$ 320	$ 681	$ 661
Geographic Concentration Risk \| Non-US \| Revenue from Contract with Customer Benchmark
Disaggregation of Revenue [Line Items]
Percentage of concentration risk	16.00%	16.00%	16.00%	15.00%
Small Business \| Operating segments \| Merchant Segment
Disaggregation of Revenue [Line Items]
Revenue	$ 1,760	$ 1,774	$ 3,369	$ 3,368
Enterprise \| Operating segments \| Merchant Segment
Disaggregation of Revenue [Line Items]
Revenue	584	587	1,096	1,089
Processing \| Operating segments \| Merchant Segment
Disaggregation of Revenue [Line Items]
Revenue	264	283	516	559
Digital Payments \| Operating segments \| Financial Segment
Disaggregation of Revenue [Line Items]
Revenue	993	1,051	1,940	2,046
Issuing \| Operating segments \| Financial Segment
Disaggregation of Revenue [Line Items]
Revenue	784	876	1,553	1,690
Banking \| Operating segments \| Financial Segment
Disaggregation of Revenue [Line Items]
Revenue	$ 578	$ 625	$ 1,164	$ 1,233

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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