Stockholders' and Members' Equity - Schedule of Changes in Accumulated Other Comprehensive Income (Loss) by Component (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	$ 691	$ 683	$ 683
Balance		691	683
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	13	9	5
Other comprehensive income (loss) before reclassifications, net of tax	2	4	4
Net current period other comprehensive income, net of tax	2	4	4
Balance	2	13	9
Interest Rate Swaps
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(24)	(30)	(47)
Other comprehensive income (loss) before reclassifications, net of tax	1	(1)	10
Amounts reclassified from accumulated other comprehensive loss, net of tax		7	7
Net current period other comprehensive income, net of tax	1	6	17
Balance	1	(24)	(30)
Accumulated Other Comprehensive (Loss) Income
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(11)	(21)	(42)
Other comprehensive income (loss) before reclassifications, net of tax	3	3	14
Amounts reclassified from accumulated other comprehensive loss, net of tax		7	7
Net current period other comprehensive income, net of tax	3	10	21
Balance	$ 3	$ (11)	$ (21)