Revenue Recognition - Customer Receivables and Contract Balances (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Jan. 01, 2024	Dec. 31, 2023	Jan. 01, 2023
Revenue from Contract with Customer [Abstract]
Customer receivables	$ 198		$ 198			$ 210
Contract assets	7		7			7
Contract liabilities	246		246		$ 269	269	$ 343
Allowance for credit losses	26		26			$ 29
Amounts included in contract liability at the beginning of the period	$ 14	$ 10	$ 162	$ 159