Variable Interest Entities - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Variable Interest Entity [Line Items]
Notional Amounts	$ 522
Net income (loss)	3,275	$ (752)	$ 1,358
Fixed maturity available-for-sale securities, at fair value	87,111	88,738
Other investments	6,588	5,015
Reinsurance-Related Notes, September 30 2014 | Senior notes
Variable Interest Entity [Line Items]
Carrying Value	1,100
Lincoln Reinsurance Company of Vermont VI
Variable Interest Entity [Line Items]
Carrying Value	0
Lincoln Reinsurance Company of Vermont VI | Senior notes
Variable Interest Entity [Line Items]
Carrying Value	275
Reinsurance-Related Notes, Novemebr 1 2019 | Senior notes
Variable Interest Entity [Line Items]
Carrying Value	410
Reinsurance-Related Notes, September 30 2021 | Senior notes
Variable Interest Entity [Line Items]
Carrying Value	399
Reinsurance-Related Notes, December 31 2022 | Senior notes
Variable Interest Entity [Line Items]
Carrying Value	1,500
Limited Partnerships and Limited Liability Companies
Variable Interest Entity [Line Items]
Other investments	5,300	4,200
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Notional Amounts	522	544
Net income (loss)	0	$ 0
Variable Interest Entity, Not Primary Beneficiary | Reinsurance-Related Notes, September 30 2014
Variable Interest Entity [Line Items]
Fixed maturity available-for-sale securities, at fair value	1,100
Variable Interest Entity, Not Primary Beneficiary | Reinsurance-Related Notes, Novemebr 1 2019
Variable Interest Entity [Line Items]
Fixed maturity available-for-sale securities, at fair value	500
Variable Interest Entity, Not Primary Beneficiary | Reinsurance-Related Notes, September 30 2021
Variable Interest Entity [Line Items]
Fixed maturity available-for-sale securities, at fair value	400
Variable Interest Entity, Not Primary Beneficiary | Reinsurance-Related Notes, December 31 2022
Variable Interest Entity [Line Items]
Fixed maturity available-for-sale securities, at fair value	$ 1,500