Accumulated Other Comprehensive Loss Activity, Net of Tax (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 1,287
Balance	1,155
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(39)
Balance	(39)
Change in Deferred Pension and Other
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(38)
Other comprehensive income activity	(44)
Balance	(82)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(77)
Other comprehensive income activity	(44)
Balance	$ (121)