Reconciliation between Interest Expense and Cash Interest Paid (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Disclosure [Abstract]
Interest expense		$ 191	$ 194	$ 222
Amortization of debt premiums/discounts, net		(2)	(2)	(1)
Amortization of deferred financing costs		(8)	(6)	(5)
Non-cash losses on debt extinguishment		(1)	(1)	(6)
Change in accrued interest		3	(2)	9
Interest paid	[1]	$ 183	$ 183	$ 219

[1] Does not include capitalized interest of $4 million, $5 million and $4 million for 2021, 2020 and 2019, respectively.