Summary of Significant Accounting Policies - Allowance for Merchant Credit Losses (Details) - Merchant credit losses - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Loss Contingencies [Line Items]
Aggregate merchant credit losses incurred	$ 62	$ 41	$ 113
Collateral held	1,500	2,200
Loss contingency accrual	$ 29	$ 42