Debt - Schedule of Assets and Liabilities Related to Asset-backed Debt Arrangements (Detail) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] | ||
| Prepaid expenses and other | $ 8,336 | $ 7,973 |
| Other assets | 23,248 | 19,769 |
| Accounts payable and accrued liabilities | 24,981 | 23,374 |
| Debt maturing within one year | 18,618 | 22,633 |
| Long-term debt | 139,532 | 121,381 |
| Variable Interest Entity, Primary Beneficiary | ||
| Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] | ||
| Accounts receivable, net | 18,421 | 18,339 |
| Prepaid expenses and other | 298 | 322 |
| Other assets | 11,753 | 11,647 |
| Accounts payable and accrued liabilities | 34 | 37 |
| Debt maturing within one year | 14,863 | 17,312 |
| Long-term debt | $ 12,204 | $ 8,827 |