Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenues
Insurance premiums	$ 1,625	$ 1,612	$ 3,226	$ 3,191
Fee income	1,339	1,365	2,662	2,744
Net investment income	1,332	1,508	2,679	2,974
Realized gain (loss)	663	(1,784)	230	(2,612)
Amortization of deferred gain (loss) on business sold through reinsurance	(12)	9	(24)	19
Other revenues	206	219	496	427
Total revenues	5,153	2,929	9,269	6,743
Expenses
Benefits	2,008	2,192	4,011	4,483
Interest credited	853	808	1,675	1,593
Market risk benefit (gain) loss	(136)	(2,023)	(2,043)	(1,404)
Policyholder liability remeasurement (gain) loss	(105)	(110)	(117)	(228)
Commissions and other expenses	1,351	1,376	2,951	2,701
Interest and debt expense	86	84	167	166
Total expenses	4,057	2,327	6,644	7,311
Income (loss) before taxes	1,096	602	2,625	(568)
Federal income tax expense (benefit)	201	91	509	(198)
Net income (loss)	895	511	2,116	(370)
Other comprehensive income (loss), net of tax:
Unrealized investment gain (loss)	(313)	(513)	(440)	1,261
Market risk benefit non-performance risk gain (loss)	(197)	(924)	(661)	101
Policyholder liability discount rate remeasurement gain (loss)	92	112	208	(90)
Foreign currency translation adjustment	0	5	(1)	8
Funded status of employee benefit plans	0	(30)	1	(32)
Total other comprehensive income (loss), net of tax	(418)	(1,350)	(893)	1,248
Comprehensive income (loss)	477	(839)	1,223	878
Net Income (Loss) Available to Common Stockholders
Net income (loss)	895	511	2,116	(370)
Preferred stock dividends declared	(11)	(11)	(46)	(36)
Deferred units of LNC stock in our deferred compensation plans	0	2	3	(2)
Net income (loss) available to common stockholders	$ 884	$ 502	$ 2,073	$ (408)
Net Income (Loss) Per Common Share
Basic (in dollars per share)	$ 5.18	$ 2.95	$ 12.16	$ (2.40)
Diluted (in dollars per share)	5.11	2.94	12.03	(2.41)
Cash Dividends Declared Per Preferred Share (in dollars per share)	562.50	562.50	2,281.25	1,817.19
Cash Dividends Declared Per Common Share (in dollars per share)	0.45	0.45	0.90	0.90
Series C Preferred Stock
Net Income (Loss) Per Common Share
Cash Dividends Declared Per Preferred Share (in dollars per share)	0	0	1,156.25	635.94
Series D Preferred Stock
Net Income (Loss) Per Common Share
Cash Dividends Declared Per Preferred Share (in dollars per share)	$ 562.50	$ 562.50	$ 1,125	$ 1,181.25