Annual report pursuant to Section 13 and 15(d)

Available-for-Sale Securities, at Fair Value, Other than Temporary Impairment, Credit Losses Recognized in Earnings (Details)

v3.22.4
Available-for-Sale Securities, at Fair Value, Other than Temporary Impairment, Credit Losses Recognized in Earnings (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]    
Cumulative other-than-temporary credit losses $ 0 $ 17,000,000