Consolidated Statements Of Stockholder's Equity - USD ($) $ in Millions	Common Stock [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance as of beginning-of-period at Dec. 31, 2018	$ 11,237		$ 4,423	$ 659
Stock compensation/issued for benefit plans	4
Net income (loss)			355		$ 355
Dividends paid to Lincoln National Corporation			(400)
Other comprehensive income (loss), net of tax				3,866	3,866
Balance as of end-of-period at Jun. 30, 2019	11,241		4,378	4,525	20,144
Balance as of beginning-of-period at Mar. 31, 2019	11,240		4,356	2,654
Stock compensation/issued for benefit plans	1
Net income (loss)			222		222
Dividends paid to Lincoln National Corporation			(200)
Other comprehensive income (loss), net of tax				1,871	1,871
Balance as of end-of-period at Jun. 30, 2019	11,241		4,378	4,525	20,144
Balance as of beginning-of-period at Dec. 31, 2019	11,312	$ (201)	4,437	5,836	21,585
Capital contributions from Lincoln National Corporation	475
Stock compensation/issued for benefit plans	12
Net income (loss)			358		358
Dividends paid to Lincoln National Corporation			(406)
Other comprehensive income (loss), net of tax				1,979	1,979
Balance as of end-of-period at Jun. 30, 2020	11,799		4,188	7,815	23,802
Balance as of beginning-of-period at Mar. 31, 2020	11,791		4,433	3,773
Stock compensation/issued for benefit plans	8
Net income (loss)			(145)		(145)
Dividends paid to Lincoln National Corporation			(100)
Other comprehensive income (loss), net of tax				4,042	4,042
Balance as of end-of-period at Jun. 30, 2020	$ 11,799		$ 4,188	$ 7,815	$ 23,802