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Supplemental Cash Flow Information - Supplemental Cash Flow Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Supplemental Cash Flow Information:      
Interest paid $ 421 $ 398 $ 320
Income taxes paid, net of refunds $ 215 $ 211 $ 195