XML 54 R40.htm IDEA: XBRL DOCUMENT v3.21.1
Allowance for Expected Credit Losses - Reinsurance recoverables (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Credit Loss [Abstract]    
Balance at beginning of period $ 4,500,802 $ 4,346,816
Balance at end of period 4,041,076 4,500,802
Allowance for Expected Credit Losses    
Balance at beginning of period 11,636 1,364
Cumulative effect of accounting change [1]   12,010
Change for provision of expected credit losses (764) (1,738)
Balance at end of period $ 10,872 $ 11,636
[1] Adoption of ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326)”