Fair Value Measurements - Effect of Interest Rate Swap Contracts (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Total interest expense which reflects the effects of cash flow hedges	$ (68)	$ (120)	$ (254)	$ (360)
Hedged item	(5)	(5)	(12)	(14)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax	$ 3	$ 0	$ 4	$ 0