Segment Information - Reconciliation of Net Income (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Pretax adjusted operating earnings	$ (953)	$ 2,027	$ 3,651	$ 2,386	$ 748	$ 252	$ (538)	$ 3,586	$ 7,111	$ 4,047	$ (2,491)
Non-operating adjustments (income) loss:
Net movement in freestanding derivatives									2,024	(2,639)	(7,268)
Net realized investment gains (losses) including change in fair value of funds withheld embedded derivative									(359)	182	377
Cost of reinsurance									0	0	(2,520)
Pretax income (loss) attributable to Jackson Financial Inc.									7,068	3,785	(2,488)
Income tax expense (benefit)	(235)	559	717	330	87	(16)	(54)	586	1,371	602	(854)
Net income (loss) attributable to Jackson Financial Inc.	$ (710)	$ 1,479	$ 2,903	$ 2,025	$ 585	$ 206	$ (540)	$ 2,932	5,697	3,183	(1,634)
Operating Segments
Segment Reporting Information [Line Items]
Pretax adjusted operating earnings									1,632	2,781	1,974
Segment Reconciling Items
Non-operating adjustments (income) loss:
Fees attributed to variable annuity benefit reserves									3,077	2,854	2,509
Net movement in freestanding derivatives									(2,744)	(5,674)	(4,662)
Net reserve and embedded derivative movements									2,891	2,753	(3,184)
DAC and DSI impact									(1,214)	(266)	1,261
Assumption changes									367	24	128
Net realized investment gains (losses) including change in fair value of funds withheld embedded derivative									1,827	161	817
Cost of reinsurance									0	0	(2,082)
Net investment income on funds withheld assets									1,254	1,188	792
Other items									$ (22)	$ (36)	$ (41)