v3.26.3
Debt - Additional Information (Detail) - USD ($)
$ in Millions
1 Months Ended 9 Months Ended
May 31, 2026
Sep. 30, 2026
Sep. 30, 2025
Jul. 31, 2026
Apr. 30, 2026
Debt Instrument [Line Items]          
Repayments of debt   $ 2,713 $ 5,834    
Commercial Paper [Member] | Minimum [Member]          
Debt Instrument [Line Items]          
Debt instrument, principal amount       $ 4,000  
Commercial Paper [Member] | Maximum [Member]          
Debt Instrument [Line Items]          
Debt instrument, principal amount       8,000  
5.250% Senior Notes Due 2026 [Member]          
Debt Instrument [Line Items]          
Debt instrument, stated interest 5.25%        
Repayments of debt $ 1,500        
5.375% Senior Notes Due 2026 [Member]          
Debt Instrument [Line Items]          
Debt instrument, stated interest 5.375%        
Repayments of debt $ 1,000        
Senior Notes [Member]          
Debt Instrument [Line Items]          
Debt instrument, principal amount         $ 3,000
Senior Notes [Member] | Senior Secured Notes Due 2031 [Member]          
Debt Instrument [Line Items]          
Debt instrument, principal amount         $ 1,000
Debt instrument, stated interest         4.70%
Senior Notes [Member] | Senior Secured Notes Due 2033 [Member]          
Debt Instrument [Line Items]          
Debt instrument, principal amount         $ 750
Debt instrument, stated interest         5.00%
Senior Notes [Member] | Senior Secured Notes Due 2036 [Member]          
Debt Instrument [Line Items]          
Debt instrument, principal amount         $ 1,250
Debt instrument, stated interest         5.30%
Senior Unsecured Revolving Credit Facility [Member]          
Debt Instrument [Line Items]          
Total committed capacity of senior unsecured credit facility       $ 8,000