Basis of Presentation and Summary of Significant Accounting Policies (Details) - USD ($)		3 Months Ended
	Jul. 29, 2019	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Business Acquisition [Line Items]
Restricted cash and cash equivalents		$ 38,000,000	$ 40,000,000
Allowance for doubtful accounts		51,000,000	39,000,000
Goodwill impairment			0
Accumulated impairment loss			0
Equity securities without a readily determinable fair value		167,000,000	167,000,000
Interest expense		189,000,000		$ 59,000,000
Interest income		2,000,000		$ 2,000,000
First Data
Business Acquisition [Line Items]
Percentage of business acquired	100.00%
Total purchase price for acquisition	$ 46,475,000,000
Merchant credit losses
Business Acquisition [Line Items]
Aggregate merchant credit losses incurred		30,000,000
Collateral held		650,000,000	510,000,000
Loss contingency accrual		$ 40,000,000	$ 34,000,000