Accumulated Other Comprehensive Income (Loss) - Schedule of Changes in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period			$ 13,834
Net current period other comprehensive income (loss)	$ (48)	$ 555	1,064	$ 136
Balance, end of period	14,241		14,241
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(1,264)	(2,073)	(2,426)	(1,652)
OCI before reclassifications	(47)	555	1,067	130
Reclassifications due to business divestitures			48	4
Amounts reclassified from AOCI		0	0	0
Net current period other comprehensive income (loss)	(47)	555	1,115	134
Balance, end of period	(1,311)	(1,518)	(1,311)	(1,518)
Gains (Losses)  on Derivatives Qualifying as Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(3)	(5)	(2)	1
OCI before reclassifications	0	2	(1)	(4)
Reclassifications due to business divestitures			0	0
Amounts reclassified from AOCI		1	0	1
Net current period other comprehensive income (loss)	0	1	(1)	(5)
Balance, end of period	(3)	(4)	(3)	(4)
Pension and Postretirement Liability Adjustment
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(148)	(237)	(99)	(245)
OCI before reclassifications	(1)	(3)	(2)	1
Reclassifications due to business divestitures			(50)	0
Amounts reclassified from AOCI		(2)	(2)	(6)
Net current period other comprehensive income (loss)	(1)	(1)	(50)	7
Balance, end of period	(149)	(238)	(149)	(238)
AOCI Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(1,415)	(2,315)	(2,527)	(1,896)
OCI before reclassifications	(48)	554	1,064	127
Reclassifications due to business divestitures			(2)	4
Amounts reclassified from AOCI		(1)	(2)	(5)
Net current period other comprehensive income (loss)	(48)	555	1,064	136
Balance, end of period	$ (1,463)	$ (1,760)	$ (1,463)	$ (1,760)