Consolidated Statements Of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues
Insurance premiums	$ 1,566	$ 1,548	$ 4,757	$ 4,523
Fee income	1,363	1,381	4,107	4,249
Net investment income	1,494	1,295	4,468	4,105
Realized gain (loss)	(453)	249	(3,066)	1,531
Amortization of deferred gain on business sold through reinsurance	15	10	34	31
Other revenues	218	189	646	530
Total revenues	4,203	4,672	10,946	14,969
Expenses
Benefits	2,152	2,149	6,635	6,259
Interest credited	831	726	2,424	2,133
Market risk benefit (gain) loss	(1,428)	(798)	(2,832)	(1,679)
Policyholder liability remeasurement (gain) loss	159	2,692	(68)	2,818
Commissions and other expenses	1,335	1,280	3,970	3,741
Interest and debt expense	84	71	250	205
Spark program expense	36	44	101	118
Impairment of intangibles		634		634
Total expenses	3,169	6,798	10,480	14,229
Income (loss) before taxes	1,034	(2,126)	466	740
Federal income tax expense (benefit)	181	(350)	(17)	195
Net income (loss)	853	(1,776)	483	545
Other comprehensive income (loss), net of tax:
Unrealized investment gain (loss)	(2,896)	(5,055)	(1,635)	(19,207)
Market risk benefit non-performance risk gain (loss)	(844)	(150)	(742)	224
Policyholder liability discount rate remeasurement gain (loss)	364	549	274	2,070
Foreign currency translation adjustment	(6)	(13)	1	(33)
Funded status of employee benefit plans	6	9	(26)	22
Total other comprehensive income (loss), net of tax	(3,376)	(4,660)	(2,128)	(16,924)
Comprehensive income (loss)	(2,523)	(6,436)	(1,645)	(16,379)
Net Income (Loss) Available to Common Stockholders
Net income (loss)	853	(1,776)	483	545
Preferred stock dividends declared	(34)		(71)
Deferred units of LNC stock in our deferred compensation plans		(1)	(2)	(8)
Net income (loss) available to common stockholders	$ 819	$ (1,777)	$ 410	$ 537
Net Income (Loss) Per Common Share
Basic (in dollars per share)	$ 4.82	$ (10.46)	$ 2.43	$ 3.18
Diluted (in dollars per share)	4.79	(10.47)	2.40	3.10
Cash Dividends Declared Per Preferred Share	1,718.75		3,535.94
Cash Dividends Declared Per Common Share	0.45	0.45	1.35	1.35
Series C Preferred Stock [Member]
Net Income (Loss) Per Common Share
Cash Dividends Declared Per Preferred Share	1,156.25		1,792.19
Series D Preferred Stock [Member]
Net Income (Loss) Per Common Share
Cash Dividends Declared Per Preferred Share	$ 562.50		$ 1,743.75