Nature of Operations, Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details) $ in Millions		3 Months Ended								6 Months Ended		9 Months Ended		12 Months Ended
	Oct. 01, 2021 USD ($)	Dec. 31, 2022 USD ($) item	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Dec. 31, 2022 USD ($) item	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Product Information [Line Items]
Number of wholly owned subsidiaries | item														1
Estimated Contract Life UL Policies (In Years)														40 years
Estimated Contract Life VUL Policies (In Years)														40 years
Front End Load Annuity Products Assumed Life (In Years)														25 years
Number Of Scenarios Used Per Policy To Value A Block Of Guarantees		100												100
Total Scenarios To Value GLB liability | item		44,000,000												44,000,000
Participating Policies as a Percentage of the Face Amount of the Insurance In Force		1.00%				1.00%								1.00%	1.00%
Dividend Expenses														$ 49	$ 48	$ 53
Other revenues		$ 172	$ 162	$ 133	$ 154	$ 176	$ 149	$ 162	$ 170					621	657	553
Insurance fees		1,397	1,438	1,446	1,502	1,567	1,931	1,603	1,529					5,783	6,630	6,120
Reinsurance amount of in-force executive benefit and universal life reserves		9,400												9,400
Coinsurance investments book value	$ 4,600
Coinsurance investments fair value	5,200
Realized gain on coinsurance investments	635
Deferred gain on coinsurance investments	$ 797
Amortization of deferred gain on business sold through reinsurance		8	9	10	10	10	8	7	7	$ 20	$ 14	$ 29	$ 22	37	32	33
Realized gains (losses)		(124)	11	70	257	700	(32)	(169)	212	327	43	338	11	214	711	(526)
Commissions and other expenses		1,326	1,205	1,077	1,191	1,276	1,841	1,260	1,171					4,799	5,548	4,889
Retained earnings		2,436	2,398	4,962	4,799	4,366	4,664	4,595	4,444	4,962	4,595	2,398	4,664	2,436	4,366
Income (loss) before taxes		91	(2,777)	529	540	992	434	549	554					(1,617)	2,529	535
Other assets		21,338	21,560	20,447	22,284	23,292	22,941	22,871	21,930	20,447	22,871	21,560	22,941	21,338	23,292
Other liabilities		15,037	16,635	17,378	19,524	22,122	22,308	21,934	20,415	17,378	21,934	16,635	22,308	15,037	22,122
Federal income tax benefit		(14)	(488)	86	82	176	65	83	97					(332)	420	(56)
Derivative assets		3,519	3,398	3,167	4,574	5,697	5,075	4,729	3,482	3,167	4,729	3,398	5,075	3,519	5,697
Other Adjustment [Member]
Product Information [Line Items]
Income (loss) before taxes														16	(16)
Other assets		(70)				(760)								(70)	(760)
Other liabilities		(212)				(500)								(212)	(500)
Derivative assets		$ (142)				260								$ (142)	260
Sales Force [Member]
Product Information [Line Items]
Useful life														25 years
VOCRA [Member]
Product Information [Line Items]
Useful life														20 years
VODA [Member]
Product Information [Line Items]
Useful life														13 years
Commercial [Member]
Product Information [Line Items]
Loans Reported As Delinquent In Days														60 days
Number of missed payments to qualify as delinqent | item														2
Period In Which Loans No Longer Accrue Interest In Days														90 days
Number of missed payments to qualify loans as non-accrual | item														3
Loan-to-value ratio indicating principal is greater than collateral														100.00%
Residential [Member]
Product Information [Line Items]
Period In Which Loans No Longer Accrue Interest In Days														90 days
Lincoln Life & Annuity Company of New York [Member]
Product Information [Line Items]
Ownership percentage														100.00%
Lincoln Life Assurance Company of Boston ("LLACB") [Member]
Product Information [Line Items]
Ownership percentage														100.00%
Maximum [Member]
Product Information [Line Items]
Estimated Contract Life Fixed and Variable Deferred Annuities (In Years)														30 years
Maximum [Member] | Commercial [Member]
Product Information [Line Items]
Debt-service coverage ratio indicating property income not covering debt payments														1.0
Minimum [Member]
Product Information [Line Items]
Estimated Contract Life Fixed and Variable Deferred Annuities (In Years)														15 years
Life Insurance Segment [Member] | Maximum [Member]
Product Information [Line Items]
Investment Yield Assumptions for Traditional Direct Individual Life Reserves		7.75%												7.75%
Life Insurance Segment [Member] | Minimum [Member]
Product Information [Line Items]
Investment Yield Assumptions for Traditional Direct Individual Life Reserves		2.25%												2.25%
Annuities Segment [Member]
Product Information [Line Items]
Other revenues														$ 468	497	404
Fee income														$ 743	848	732
Annuities Segment [Member] | Maximum [Member]
Product Information [Line Items]
Investment Yield Assumptions for Immediate and Deferred Paid-Up Annuities		12.15%												12.15%
Annuities Segment [Member] | Minimum [Member]
Product Information [Line Items]
Investment Yield Assumptions for Immediate and Deferred Paid-Up Annuities		0.50%												0.50%
Group Protection Segment [Member]
Product Information [Line Items]
Other revenues														$ 203	180	$ 177
Reinsurance Transactions, First Penn-Pacific Life Insurance [Member]
Product Information [Line Items]
No. of Years in Which Deferred Gain From Reinsurance Transaction is Recognized as Income														15 years
Reinsurance Transactions, LNBAR [Member]
Product Information [Line Items]
No. of Years in Which Deferred Gain From Reinsurance Transaction is Recognized as Income														30 years
Reinsurance Transactions, LNBAR, Amended [Member]
Product Information [Line Items]
No. of Years in Which Deferred Gain From Reinsurance Transaction is Recognized as Income														20 years
Reinsurance Transactions, Athene [Member]
Product Information [Line Items]
No. of Years in Which Deferred Gain From Reinsurance Transaction is Recognized as Income														20 years
Reinsurance Transactions, Security Life Of Denver Insurance Company [Member]
Product Information [Line Items]
Gain Loss On Ceded Contracts, Recognition Period														30 years
Restatement Impacts [Member]
Product Information [Line Items]
Other revenues			27	(30)	3
Insurance fees						6	4	3	5						18
Amortization of deferred gain on business sold through reinsurance		$ (8)	(8)	(8)	(8)	(8)				(15)		(23)		$ (32)	(8)
Realized gains (losses)		28	6	(12)	(9)	626	(8)	3	1	(20)	4	(15)	(5)	13	622
Commissions and other expenses		8	(3)	(4)	(1)	2	2	(2)							2
Retained earnings		468	454	456	469	480	(6)	(3)	(7)	456	(3)	454	(6)	468	480
Income (loss) before taxes		19	(3)	(17)	(14)	615	(4)	5	(9)					(15)	607
Other assets		(185)	(288)	(122)	(206)	(754)	(623)	(642)	(414)	(122)	(642)	(288)	(623)	(185)	(754)
Other liabilities		(796)	(994)	(780)	(960)	(986)	(375)	(460)	(380)	(780)	(460)	(994)	(375)	(796)	(986)
Federal income tax benefit		3	(1)	(4)	(3)	130	(1)	1	(2)					(3)	127
Derivative assets		(143)	$ (226)	$ (203)	$ (266)	260	$ 247	$ 182	$ 29	$ (203)	$ 182	$ (226)	$ 247	(143)	260
Restatement Impacts [Member] | Misstatement Associated With The Coinsurance Reinsurance Transaction [Member]
Product Information [Line Items]
Amortization of deferred gain on business sold through reinsurance														(32)	(8)
Realized gains (losses)															635
Commissions and other expenses															4
Retained earnings		$ 467				492								$ 467	492
Other liabilities						492									$ 492
Federal income tax benefit						$ 131