Supplemental Cash Flow Information - Schedule of Noncash Investing and Financing Activities (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Supplemental Cash Flow Elements [Abstract]
Accrued liabilities for purchases of property, plant and equipment	$ 61	$ 49
Right-of-use assets obtained in exchange for new operating lease liabilities	42	43
Right-of-use assets obtained in exchange for new finance lease liabilities	16	9
Remeasurement of finance lease right-of-use assets	50	25
Remeasurement of operating lease right-of-use assets	(1)	3
Accrued benefits on life insurance contracts	$ 5	$ 0