DERIVATIVE INSTRUMENTS - Derivatives and Hedging Instruments Gain (Loss) Summary (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized foreign currency translation gains (losses) during period		$ (889)	$ 510	$ 252
Derivative and non-derivative hedging instruments, gain (loss) recognized in other comprehensive income, before tax	[1]	858	(418)	47
Net investment income
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative	[2]	(2)	(2)	(3)
Net investment gains (losses)
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative		(805)	399	(174)
Reclassification out of Accumulated Other Comprehensive Income
Derivative Instruments, Gain (Loss) [Line Items]
Cash flow hedge		(4)
Fair value hedge excluded component		(2)
Cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in other comprehensive income on derivative	[1]	3	(2)	(4)
Cash flow hedges | Net investment income
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative	[2]	(1)	(1)	(2)
Cash flow hedges | Net investment gains (losses)
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative	[3]	(4)	0	(1)
Cash flow hedges | Foreign currency swaps | Variable Interest Entity
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in other comprehensive income on derivative	[1]	3	(2)	(4)
Cash flow hedges | Foreign currency swaps | Variable Interest Entity | Net investment income
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative	[2]	(1)	(1)	(2)
Cash flow hedges | Foreign currency swaps | Variable Interest Entity | Net investment gains (losses)
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative		(4)	0	(1)
Fair value hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in other comprehensive income on derivative	[1]	2	1	(8)
Fair value hedges | Net investment income
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative	[2]	(1)	(1)	(1)
Fair value hedges | Net investment gains (losses)
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative		(24)	(15)	(69)
Fair value hedges | Foreign currency forwards | Net investment gains (losses)
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative	[3]	(1)	(7)	(62)
Fair value hedges | Foreign currency options | Net investment gains (losses)
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative	[3]	(22)	(8)	(7)
Fair value hedges | Interest rate swaptions
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in other comprehensive income on derivative	[1],[3]	2	1	(8)
Fair value hedges | Interest rate swaptions | Net investment income
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative	[2],[3]	(1)	(1)	(1)
Fair value hedges | Interest rate swaptions | Net investment gains (losses)
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative	[3]	(1)	0	0
Net investment hedge
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized foreign currency translation gains (losses) during period	[1]	853	(417)	59
Net investment hedge | Net investment gains (losses)
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative		25	144	6
Net investment hedge | Foreign currency forwards
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized foreign currency translation gains (losses) during period	[1]	525	(282)	83
Net investment hedge | Foreign currency forwards | Net investment gains (losses)
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative		29	149	10
Net investment hedge | Foreign currency options
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized foreign currency translation gains (losses) during period	[1]	0	0	0
Net investment hedge | Foreign currency options | Net investment gains (losses)
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative		(4)	(5)	(4)
Net investment hedge | Non-derivative hedging Instruments
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized foreign currency translation gains (losses) during period	[1]	328	(135)	(24)
Net investment hedge | Non-derivative hedging Instruments | Net investment gains (losses)
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative		0	0	0
Non-qualifying strategies | Net investment gains (losses)
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative		(802)	270	(110)
Non-qualifying strategies | Foreign currency swaps | Variable Interest Entity | Net investment gains (losses)
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative		(188)	(122)	(68)
Non-qualifying strategies | Foreign currency swaps | Consolidated Entity Excluding Variable Interest Entities (VIE) | Net investment gains (losses)
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative		135	29	90
Non-qualifying strategies | Foreign currency forwards | Net investment gains (losses)
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative		(707)	311	(148)
Non-qualifying strategies | Foreign currency options | Net investment gains (losses)
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative		(3)	(3)	0
Non-qualifying strategies | Interest rate swaps | Net investment gains (losses)
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative		(38)	49	17
Non-qualifying strategies | Forward bond purchase commitment | Variable Interest Entity | Net investment gains (losses)
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in income on derivative		$ (1)	$ 6	$ 0

[1] Gains and losses on cash flow hedges and the change in the fair value of interest rate swaptions related to the time value of the swaptions in fair value hedges are recorded as unrealized gains (losses). Gains and losses on net investment hedges related to changes in foreign currency spot rates are recorded in the unrealized foreign currency translation gains (losses) line in the consolidated statement of comprehensive income (loss).

[2] Interest expense/income on cash flow hedges are recorded in net investment income. For interest rate swaptions classified as fair value hedges, the change in the time value of the swaptions is recognized in other comprehensive income (loss) and amortized into net investment income over its legal term. If the swaption is early terminated but the hedge item is still outstanding, the amortization of disposal amount of the swaptions is recorded in net investment income over the remaining life of the hedged items.

[3] Impact of cash flow hedges reported as net investment gains (losses) includes $4 of losses reclassified from accumulated other comprehensive income (loss) into earnings during the year ended December 31, 2021, and an immaterial amount during the years ended December 31, 2020 and 2019, respectively. In addition, $2 of losses were reclassified from accumulated other comprehensive income (loss) into earnings during the year ended December 31, 2021, and an immaterial amount during the years ended December 31, 2020 and 2019, respectively, related to fair value hedges excluded component. Impact shown net of effect of hedged items (see Fair Value Hedges section of this Note 4 for further detail).