Variable Interest Entities - Summary of Assets and Liabilities (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Jun. 30, 2026 |
Dec. 31, 2025 |
Sep. 30, 2025 |
Jun. 30, 2025 |
Dec. 31, 2024 |
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| Variable Interest Entity [Line Items] | ||||||||||||||||||||
| Loan receivables, net | $ 93,005 | $ 93,366 | ||||||||||||||||||
| Other assets (Note 6) | 7,697 | 6,941 | ||||||||||||||||||
| Total assets | 122,469 | 119,095 | ||||||||||||||||||
| Total liabilities | 105,919 | 102,329 | ||||||||||||||||||
| Allowance for credit loss | (10,341) | $ (10,312) | (10,442) | $ (10,373) | $ (10,564) | $ (10,929) | ||||||||||||||
| Total loan receivables | [1],[2],[3] | 103,346 | 103,808 | |||||||||||||||||
| Variable Interest Entity, Primary Beneficiary | ||||||||||||||||||||
| Variable Interest Entity [Line Items] | ||||||||||||||||||||
| Loan receivables, net | [4] | 19,922 | 20,457 | |||||||||||||||||
| Other assets (Note 6) | [5] | 799 | 46 | |||||||||||||||||
| Total assets | 20,721 | 20,503 | ||||||||||||||||||
| Borrowings | [6],[7] | 8,915 | 8,415 | |||||||||||||||||
| Other liabilities | 27 | 28 | ||||||||||||||||||
| Total liabilities | 8,942 | 8,443 | ||||||||||||||||||
| Allowance for credit loss | (2,000) | (1,900) | ||||||||||||||||||
| Total loan receivables | 21,898 | 22,400 | ||||||||||||||||||
| Restricted Cash Equivalent | $ 794 | $ 42 | ||||||||||||||||||
| Restricted Cash Equivalent, Statement of Financial Position [Extensible Enumeration] | Other assets (Note 6) | Other assets (Note 6) | ||||||||||||||||||
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- Definition Amount of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of liability recognized for present obligation requiring transfer or otherwise providing economic benefit to others. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of assets classified as other. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of liabilities classified as other. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cash equivalent restricted as to withdrawal or usage. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Indicates line item in statement of financial position that includes cash equivalent restricted to withdrawal or usage. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower. 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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- Details
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