Related Parties - Equity Investments and Other (Balance Sheet and Earnings Activity) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]
Net revenues	$ 3,330	$ 3,233	$ 3,251
Expenses	69	51	63
Receivables	518	365
Payables	25	13
Megapolis
Schedule of Equity Method Investments [Line Items]
Net revenues	2,207	2,174	2,236
Receivables	319	209
Other
Schedule of Equity Method Investments [Line Items]
Net revenues	1,123	1,059	1,015
Expenses	69	51	$ 63
Receivables	199	156
Payables	$ 25	$ 13