Consolidated Statements Of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenues
Insurance premiums	$ 1,612	$ 1,498	$ 3,191	$ 2,975
Fee income	1,365	1,409	2,744	2,867
Net investment income	1,508	1,398	2,974	2,809
Realized gain (loss)	(1,784)	1,101	(2,612)	1,282
Amortization of deferred gain on business sold through reinsurance	9	11	19	22
Other revenues	219	160	427	342
Total revenues	2,929	5,577	6,743	10,297
Expenses
Benefits	2,192	1,954	4,483	4,110
Interest credited	808	710	1,593	1,407
Market risk benefit (gain) loss	(2,023)	477	(1,404)	(881)
Policyholder liability remeasurement (gain) loss	(110)	85	(228)	126
Commissions and other expenses	1,335	1,207	2,637	2,460
Interest and debt expense	84	68	166	134
Spark program expense	41	44	64	75
Total expenses	2,327	4,545	7,311	7,431
Income (loss) before taxes	602	1,032	(568)	2,866
Federal income tax expense (benefit)	91	192	(198)	545
Net income (loss)	511	840	(370)	2,321
Other comprehensive income (loss), net of tax:
Unrealized investment gain (loss)	(513)	(6,655)	1,261	(14,153)
Market risk benefit non-performance risk gain (loss)	(924)	354	101	374
Policyholder liability discount rate remeasurement gain (loss)	112	710	(90)	1,521
Foreign currency translation adjustment	5	(14)	8	(19)
Funded status of employee benefit plans	(30)	10	(32)	13
Total other comprehensive income (loss), net of tax	(1,350)	(5,595)	1,248	(12,264)
Comprehensive income (loss)	(839)	(4,755)	878	(9,943)
Net Income (Loss) Available to Common Stockholders
Net income (loss)	511	840	(370)	2,321
Preferred stock dividends declared	(11)		(36)
Deferred units of LNC stock in our deferred compensation plans	2	(7)	(2)	(7)
Net income (loss) available to common stockholders	$ 502	$ 833	$ (408)	$ 2,314
Net Income (Loss) Per Common Share
Basic (in dollars per share)	$ 2.95	$ 4.91	$ (2.40)	$ 13.44
Diluted (in dollars per share)	2.94	4.83	(2.41)	13.25
Cash Dividends Declared Per Preferred Share	562.50		1,817.19
Cash Dividends Declared Per Common Share	0.45	0.45	0.90	0.90
Series C Preferred Stock [Member]
Net Income (Loss) Per Common Share
Cash Dividends Declared Per Preferred Share			635.94
Series D Preferred Stock [Member]
Net Income (Loss) Per Common Share
Cash Dividends Declared Per Preferred Share	$ 562.50		$ 1,181.25