Restructuring and Other Charges, Net - Activity and Reserve Balances for Restructuring Charges (Detail) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2025	Dec. 31, 2024
Restructuring Cost and Reserve [Line Items]
Restructuring reserve beginning balance	$ 181	$ 63
Restructuring and other charges, net	(1)	308
Cash payments	(103)	(183)
Reversals and other	7	(7)
Restructuring reserve ending balance	84	181
Severance and Employee Termination Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve beginning balance	13	6
Restructuring and other charges, net	1	44
Cash payments	(1)	(38)
Reversals and other	(1)	1
Restructuring reserve ending balance	12	13
Other Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve beginning balance	168	57
Restructuring and other charges, net	(2)	264
Cash payments	(102)	(145)
Reversals and other	8	(8)
Restructuring reserve ending balance	$ 72	$ 168