Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details) - USD ($)		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Business Acquisition [Line Items]
Settlement activity, net	[1]			$ (189,000,000)	$ 166,000,000
Allowance for doubtful accounts		$ 47,000,000		47,000,000		$ 55,000,000
Accumulated impairment loss		0		0
Equity securities without a readily determinable fair value		116,000,000		116,000,000		113,000,000
Ondot
Business Acquisition [Line Items]
Pre-tax gain from remeasurement					12,000,000
Merchant credit losses
Business Acquisition [Line Items]
Aggregate merchant credit loss expense		20,000,000	$ 11,000,000	28,000,000	$ 33,000,000
Collateral held		2,100,000,000		2,100,000,000		2,200,000,000
Merchant credit loss allowance		$ 30,000,000		$ 30,000,000		$ 42,000,000

[1] The company revised, for comparable purposes with the current period’s presentation, the consolidated statement of cash flows presentation for the six months ended June 30, 2021 to include cash and cash equivalents within settlement assets as a component of total cash and cash equivalents. Additional information is included in Note 1.