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	14
Net income (loss)			155		$ 155
Dividends paid to Lincoln National Corporation			(550)
Other comprehensive income (loss), net of tax				5,838	5,838
Balance as of end-of-period at Sep. 30, 2019	11,251		4,028	6,497	21,776
Balance as of beginning-of-period at Jun. 30, 2019	11,241		4,378	4,525
Stock compensation/issued for benefit plans	10
Net income (loss)			(201)		(201)
Dividends paid to Lincoln National Corporation			(149)
Other comprehensive income (loss), net of tax				1,972	1,972
Balance as of end-of-period at Sep. 30, 2019	11,251		4,028	6,497	21,776
Balance as of beginning-of-period at Dec. 31, 2019	11,312	$ (201)	4,437	5,836	21,585
Capital contribution from Lincoln National Corporation	475
Stock compensation/issued for benefit plans	22
Net income (loss)			31		31
Dividends paid to Lincoln National Corporation			(486)
Other comprehensive income (loss), net of tax				2,339	2,339
Balance as of end-of-period at Sep. 30, 2020	11,809		3,781	8,175	23,765
Balance as of beginning-of-period at Jun. 30, 2020	11,799		4,188	7,815
Stock compensation/issued for benefit plans	10
Net income (loss)			(327)		(327)
Dividends paid to Lincoln National Corporation			(80)
Other comprehensive income (loss), net of tax				360	360
Balance as of end-of-period at Sep. 30, 2020	$ 11,809		$ 3,781	$ 8,175	$ 23,765