Revision to Prior Year Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Policy charges and fee income	$ (71,478)	$ (96,734)	[1]
Cash flows from (used in) operating activities	(304,879)	(189,318)
CASH FLOWS FROM FINANCING ACTIVITIES:
Policyholders' account withdrawals	(2,487,346)	(2,701,808)	[1]
Other, net	(83)	(53,256)	[1]
Cash flows from (used in) financing activities	$ 933,359	523,601
As Previously Reported
CASH FLOWS FROM OPERATING ACTIVITIES:
Policy charges and fee income		(238,049)
Cash flows from (used in) operating activities		(330,633)
CASH FLOWS FROM FINANCING ACTIVITIES:
Policyholders' account withdrawals		(2,613,749)
Other, net		0
Cash flows from (used in) financing activities		664,916
Revision
CASH FLOWS FROM OPERATING ACTIVITIES:
Policy charges and fee income		141,315
Cash flows from (used in) operating activities		141,315
CASH FLOWS FROM FINANCING ACTIVITIES:
Policyholders' account withdrawals		(88,059)
Other, net		(53,256)
Cash flows from (used in) financing activities		$ (141,315)

[1] Prior period amounts have been revised to correct an error. See Note 11 for details.