v3.26.1
Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
AOCI roll forward        
Beginning balance $ 10,022 $ 8,651 $ 9,991 $ 8,254
Other comprehensive income (loss), net of tax (27) 96 (61) 124
Ending balance 9,926 9,202 9,926 9,202
Accumulated Other Comprehensive (Loss) Income [Member]        
AOCI roll forward        
Beginning balance (44) (87) (10) (115)
Other comprehensive income (loss) before reclassifications, net of tax expense (benefit)     (60)  
Amounts reclassified from accumulated other comprehensive (income) loss, net of tax (expense) benefit     (1)  
Other comprehensive income (loss), net of tax (27) 96 (61) 124
Ending balance (71) $ 9 (71) $ 9
Derivative Instruments [Member]        
AOCI roll forward        
Beginning balance     35  
Other comprehensive income (loss) before reclassifications, net of tax expense (benefit)     (2)  
Amounts reclassified from accumulated other comprehensive (income) loss, net of tax (expense) benefit     (1)  
Other comprehensive income (loss), net of tax     (3)  
Ending balance 32   32  
Other comprehensive income (loss) before reclassifications, tax     0  
Amounts reclassified from accumulated other comprehensive (income) loss, tax     0  
Available-for-Sale Securities [Member]        
AOCI roll forward        
Beginning balance     29  
Ending balance 29   29  
Other comprehensive income (loss) before reclassifications, tax     0  
Amounts reclassified from accumulated other comprehensive (income) loss, tax     0  
Foreign Currency Translation Adjustments [Member]        
AOCI roll forward        
Beginning balance     (81)  
Other comprehensive income (loss) before reclassifications, net of tax expense (benefit)     (58)  
Other comprehensive income (loss), net of tax     (58)  
Ending balance (139)   (139)  
Other comprehensive income (loss) before reclassifications, tax     0  
Amounts reclassified from accumulated other comprehensive (income) loss, tax     0  
Post - Retirement Benefit Obligations [Member]        
AOCI roll forward        
Beginning balance     7  
Ending balance $ 7   7  
Other comprehensive income (loss) before reclassifications, tax     0  
Amounts reclassified from accumulated other comprehensive (income) loss, tax     $ 0