Reinsurance - Rollforward of the reinsurance recoverable allowance for credit losses (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2024 |
Mar. 31, 2023 |
|
| Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward] | ||
| Balance, beginning of period | $ 30 | $ 84 |
| Current period provision for expected credit losses and disputes | (10) | (10) |
| Write-offs charged against the allowance for credit losses and disputes | (2) | 0 |
| Other changes | 0 | 0 |
| Balance, end of period | $ 18 | $ 74 |
| X | ||||||||||
- Definition Amount of the write-down or write-off of a receivable from a reinsurer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of increase (decrease) in allowance for credit loss on reinsurance recoverable. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
|
| X | ||||||||||
- Definition Amount of expense (reversal of expense) for expected credit loss on reinsurance recoverable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of allowance for credit loss on reinsurance recoverable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|