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Accumulated Other Comprehensive Income (Loss) - Schedule of Changes in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Accumulated other comprehensive loss, net of tax $ 14,611    
Accumulated other comprehensive loss, net of tax 13,876 $ 14,611  
Foreign Currency Translation Adjustments      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Accumulated other comprehensive loss, net of tax (1,652) (2,066) $ (1,133)
OCI before reclassifications (778) 367 (933)
Amounts reclassified from AOCI 0 0 0
Net current period other comprehensive income (loss) (774) 414 (933)
Accumulated other comprehensive loss, net of tax (2,426) (1,652) (2,066)
Other Comprehensive Income (Loss), Reclassification Adjustment From AOCI Due To Business Divestitures 4 47  
Gains (Losses) on Derivatives Qualifying as Hedges      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Accumulated other comprehensive loss, net of tax 1 1 1
OCI before reclassifications (4) 0 0
Amounts reclassified from AOCI 1 0 0
Net current period other comprehensive income (loss) (3) 0 0
Accumulated other comprehensive loss, net of tax (2) 1 1
Other Comprehensive Income (Loss), Reclassification Adjustment From AOCI Due To Business Divestitures 0 0  
Pension and Postretirement Liability Adjustment      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Accumulated other comprehensive loss, net of tax (245) (133) (291)
OCI before reclassifications 53 (100) 148
Amounts reclassified from AOCI 93 (11) 10
Net current period other comprehensive income (loss) 146 (112) 158
Accumulated other comprehensive loss, net of tax (99) (245) (133)
Other Comprehensive Income (Loss), Reclassification Adjustment From AOCI Due To Business Divestitures 0 (1)  
Total      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Accumulated other comprehensive loss, net of tax (1,896) (2,198) (1,423)
OCI before reclassifications (729) 267 (785)
Amounts reclassified from AOCI 94 (11) 10
Net current period other comprehensive income (loss) (631) 302 (775)
Accumulated other comprehensive loss, net of tax (2,527) (1,896) $ (2,198)
Other Comprehensive Income (Loss), Reclassification Adjustment From AOCI Due To Business Divestitures $ 4 $ 46