Debt - Schedule of Debt (Detail) - USD ($) $ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
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| Debt Instrument [Line Items] | ||
| Debt issuance costs and discounts | $ (439) | $ (436) |
| Total long-term debt (average life of 11.6 years, rates averaging 5.1%) | 44,766 | 44,285 |
| Total debt | 50,493 | 46,492 |
| Less amounts due within one year | (8,093) | (4,889) |
| Long-term debt | 42,400 | 41,603 |
| Commercial Paper [Member] | ||
| Debt Instrument [Line Items] | ||
| Short-term borrowings | 5,727 | 2,207 |
| Other Debt [Member] | ||
| Debt Instrument [Line Items] | ||
| Other senior secured debt | 1,005 | 1,021 |
| Senior Unsecured Credit Facility [Member] | ||
| Debt Instrument [Line Items] | ||
| Senior unsecured debt | 0 | 0 |
| Senior Unsecured Notes Payable Through 2095 [Member] | ||
| Debt Instrument [Line Items] | ||
| Senior unsecured debt | $ 44,200 | $ 43,700 |
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- Definition Amount of debt and lease obligation, classified as current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Represents the aggregate of total long-term debt, including current maturities and short-term debt. No definition available.
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- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of collateralized debt obligations classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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