Financial Statement Schedule (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Allowances for Doubtful Accounts
Movement in Valuation Allowances and Reserves
Balance at Beginning of Period	$ 16	$ 42	$ 97
Charged/ Credited to Net Income	16	16	79
Charged to Other Account	0	0	0
Charges Utilized/ Write-offs	(9)	(42)	(134)
Balance at End of Period	23	16	42
Allowance for Authorized Credits
Movement in Valuation Allowances and Reserves
Balance at Beginning of Period	26	32	39
Charged/ Credited to Net Income	1	(6)	(8)
Charged to Other Account	0	0	0
Charges Utilized/ Write-offs	(1)	0	1
Balance at End of Period	26	26	32
Allowance for Transaction Losses
Movement in Valuation Allowances and Reserves
Balance at Beginning of Period	70	88	32
Charged/ Credited to Net Income	344	316	343
Charged to Other Account	0	0	0
Charges Utilized/ Write-offs	(330)	(334)	(287)
Balance at End of Period	84	70	88
Tax Valuation Allowance
Movement in Valuation Allowances and Reserves
Balance at Beginning of Period	231	136	149
Charged/ Credited to Net Income	(73)	97	6
Charged to Other Account	(8)	(2)	(12)
Charges Utilized/ Write-offs	(7)	0	(7)
Balance at End of Period	$ 143	$ 231	$ 136