SCHEDULE III - CONDENSED SUPPLEMENTARY INSURANCE INFORMATION (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
DAC and VOBA	$ 12,196	$ 12,187	$ 12,027
Future Contract Benefits	40,002	40,174	38,302
Unearned Premiums	0	0	0
Policyholder Account Balances	125,818	120,316	113,972
Insurance Premiums	1,866	3,416	5,841
Net Investment Income	5,088	5,712	5,274
Benefits and Interest Credited	5,260	8,230	11,063
Amortization of DAC and VOBA	1,062	1,045	1,027
Other Operating Expense	4,342	4,547	4,066
Premiums Written	0	0	0
Annuities
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
DAC and VOBA	4,365	4,304	4,336
Future Contract Benefits	2,018	2,090	2,004
Unearned Premiums	0	0	0
Policyholder Account Balances	61,208	54,471	45,522
Insurance Premiums	127	(1,584)	165
Net Investment Income	1,820	1,744	1,387
Benefits and Interest Credited	1,680	(254)	1,145
Amortization of DAC and VOBA	437	443	442
Other Operating Expense	1,338	1,522	1,449
Premiums Written	0	0	0
Life Insurance
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
DAC and VOBA	7,449	7,485	7,309
Future Contract Benefits	22,817	22,049	20,561
Unearned Premiums	0	0	0
Policyholder Account Balances	36,485	37,035	37,523
Insurance Premiums	1,103	915	908
Net Investment Income	1,852	2,515	2,464
Benefits and Interest Credited	3,543	4,626	5,146
Amortization of DAC and VOBA	492	484	469
Other Operating Expense	699	703	672
Premiums Written	0	0	0
Group Protection
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
DAC and VOBA	136	154	141
Future Contract Benefits	6,209	6,282	6,086
Unearned Premiums	0	0	0
Policyholder Account Balances	0	0	0
Insurance Premiums	636	5,014	4,768
Net Investment Income	337	336	333
Benefits and Interest Credited	(676)	4,025	4,039
Amortization of DAC and VOBA	114	100	97
Other Operating Expense	1,324	1,347	1,219
Premiums Written	0	0	0
Retirement Plan Services
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
DAC and VOBA	246	244	241
Future Contract Benefits	0	0	0
Unearned Premiums	0	0	0
Policyholder Account Balances	23,619	23,784	25,138
Insurance Premiums	0	0	0
Net Investment Income	986	999	966
Benefits and Interest Credited	675	665	629
Amortization of DAC and VOBA	19	18	19
Other Operating Expense	441	426	379
Premiums Written	0	0	0
Other Operations
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
DAC and VOBA	0	0	0
Future Contract Benefits	8,958	9,753	9,651
Unearned Premiums	0	0	0
Policyholder Account Balances	4,506	5,026	5,789
Insurance Premiums	0	(929)	0
Net Investment Income	93	118	124
Benefits and Interest Credited	38	(832)	104
Amortization of DAC and VOBA	0	0	0
Other Operating Expense	540	549	347
Premiums Written	$ 0	$ 0	$ 0

LINCOLN NATIONAL LIFE INSURANCE CO /IN/ 10-K