Supplemental Cash Flow Information - Supplemental Cash Flow Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Supplemental Cash Flow Information:
Interest paid	$ 343	$ 399	$ 421
Income taxes paid, net of refunds	$ 222	$ 209	$ 215