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Business Segment Information - Schedule of Segment Reporting Information (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Revenue		$ 5,107	$ 4,756	$ 9,990	$ 9,303
Operating income (loss)		1,428	1,131	2,609	2,065
Corporate and Other
Segment Reporting Information [Line Items]
Revenue		318	305	663	633
Operating income (loss)		(547)	(642)	(1,143)	(1,243)
Merchant Segment | Operating segments
Segment Reporting Information [Line Items]
Revenue		2,410	2,206	4,663	4,202
Operating income (loss)		882	745	1,651	1,337
Financial Segment | Operating segments
Segment Reporting Information [Line Items]
Revenue		2,379	2,245	4,664	4,468
Operating income (loss)		1,093	1,028	2,101	1,971
Processing and services revenue
Segment Reporting Information [Line Items]
Revenue	[1]	4,140	3,924	8,140	7,597
Processing and services revenue | Corporate and Other
Segment Reporting Information [Line Items]
Revenue		5	7	10	13
Processing and services revenue | Merchant Segment | Operating segments
Segment Reporting Information [Line Items]
Revenue		2,132	1,940	4,142	3,667
Processing and services revenue | Financial Segment | Operating segments
Segment Reporting Information [Line Items]
Revenue		2,003	1,977	3,988	3,917
Product revenue
Segment Reporting Information [Line Items]
Revenue		967	832	1,850	1,706
Product revenue | Corporate and Other
Segment Reporting Information [Line Items]
Revenue		313	298	653	620
Product revenue | Merchant Segment | Operating segments
Segment Reporting Information [Line Items]
Revenue		278	266	521	535
Product revenue | Financial Segment | Operating segments
Segment Reporting Information [Line Items]
Revenue		$ 376	$ 268	$ 676	$ 551
[1] Includes processing and other fees charged to related party investments accounted for under the equity method of $36 million and $45 million for the three months ended June 30, 2024 and 2023, respectively, and $76 million and $91 million for the six months ended June 30, 2024 and 2023, respectively (see Note 19).

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