Segment Information - Reconciliation of Net Income (Details) - USD ($) $ in Thousands		3 Months Ended
	Apr. 01, 2023	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Pretax adjusted operating earnings	$ 2,613,000	$ (2,054,000)	$ 2,613,000	[1]
Guaranteed Benefits And Hedging Results [Abstract]
Net movement in freestanding derivatives		(2,658,000)	(1,436,000)
Market risk benefits gains (losses), net	1,907,000	174,000	1,907,000	[1]
Net realized investment gains (losses)		(68,000)	(130,000)
Net investment income on funds withheld assets		307,000	260,000	[1]
Pretax income (loss) attributable to Jackson Financial Inc.		(2,055,000)	2,582,000
Income tax expense (benefit)	388,000	(558,000)	388,000	[1]
Net income (loss) attributable to Jackson Financial Inc.	$ 2,194,000	(1,497,000)	2,194,000	[1]
Operating Segments
Segment Reporting Information [Line Items]
Pretax adjusted operating earnings		302,000	445,000
Segment Reconciling Items
Guaranteed Benefits And Hedging Results [Abstract]
Fees attributed to guarantee benefit reserves		780,000	764,000
Net movement in freestanding derivatives		(2,512,000)	(1,476,000)
Market risk benefits gains (losses), net		174,000	1,907,000
Net reserve and embedded derivative movements		(189,000)	(40,000)
Amortization of DAC associated with non-operating items		(153,000)	(173,000)
Guaranteed benefits and net hedging results		(1,900,000)	982,000
Net realized investment gains (losses)		(68,000)	(130,000)
Net realized investment gains (losses) on funds withheld assets		(673,000)	1,028,000
Net investment income on funds withheld assets		307,000	260,000
Other items		$ (23,000)	$ (3,000)

[1] (1) Recast for the adoption of ASU 2018-12. See Notes 1 and 2 to the Condensed Consolidated Financial Statements.