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v3.25.3

Debt - Schedule of Debt (Detail) - USD ($) $ in Millions | Sep. 30, 2025 | Feb. 28, 2025 | Dec. 31, 2024
--- | --- | --- | ---
Debt Instrument [Line Items] |  |  |
Debt issuance costs and discounts | $ (416) |  | $ (369)
Total long-term debt (average life of 11.7 years, rates averaging 5.1%) | 42,601 |  | 43,031
Total debt | 44,511 |  | 43,031
Less amounts due within one year | 6,110 |  | 4,698
Long-term debt | 38,401 |  | 38,333
Commercial Paper [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Short-term borrowings | 1,910 |  | 0
Senior Secured Term Loan Facility [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior secured debt | 0 | $ 1,238 | 1,238
Other Senior Secured Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Other senior secured debt | 1,067 |  | 1,046
Senior Unsecured Credit Facilities [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior unsecured debt | 0 |  | 0
Senior Unsecured Notes Payable Through 2095 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior unsecured debt | $ 41,950 |  | $ 41,116

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