Non-consolidated variable interest entities - Additional Information (Details) - Variable Interest Entity Not Primary Beneficiary [Member] $ in Billions |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2026
USD ($)
NumberOfVIE
|
Dec. 31, 2025
USD ($)
|
|
| Variable Interest Entity [Line Items] | ||
| Number of VIEs | NumberOfVIE | 2 | |
| Principal Amount Outstanding on Loans Securitized or Asset-backed Financing Arrangement | $ | $ 5.9 | $ 6.0 |
| X | ||||||||||
- Definition This is the principal amount outstanding for securitized loans only (across all types of loans). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- Definition Number of Variable Interest Entities (VIE) or potential VIEs for which the necessary information is unable to be obtained to: (1) determine whether the legal entity is a VIE, (2) determine whether it (the reporting entity) is the VIE's primary beneficiary, or (3) perform the accounting required to consolidate the VIE for which it is determined that it (the reporting entity) is the primary beneficiary. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|