Revenue Recognition - Customer Receivables and Contract Balances (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Jan. 01, 2024	Dec. 31, 2023	Jan. 01, 2023
Revenue from Contract with Customer [Abstract]
Customer receivables	$ 228		$ 228			$ 210
Contract assets	7		7			7
Contract liabilities	245		245		$ 269	269	$ 343
Gross affiliate receivables	258		258			239
Allowance for credit losses	30		30			$ 29
Amounts included in contract liability at the beginning of the period	$ 13	$ 10	$ 148	$ 149