Allowance for Credit Losses Rollforward CFF (Details) - Community First Fund - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
| Allowance for Fund loan credit losses beginning balance | $ 8 | $ 7 | $ 8 | $ 7 |
| Provision for (reversal of) Fund loan for credit losses | 0 | 1 | 1 | 1 |
| Other | 1 | 0 | 0 | 0 |
| Allowance for Fund loan credit losses ending balance | $ 9 | $ 8 | $ 9 | $ 8 |
| X | ||||||||||
- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
|
| 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 Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of expense related to other loss. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|