CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (AOCI) - Change in Each Component of AOCI (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Change in accumulated other comprehensive income (loss)
Balance, beginning of period			$ 209,366
Balance, end of period	$ 213,877	$ 209,902	213,877	$ 209,902
Liability for future policyholder benefits	491	463	491	463
Accumulated other comprehensive income (loss)
Change in accumulated other comprehensive income (loss)
Balance, beginning of period	(43,786)	(46,677)	(47,852)	(44,800)
Other comprehensive income before reclassifications	(477)	1,313	3,395	(1,025)
Increase (decrease) due to amounts reclassified from AOCI	93	167	287	628
Total other comprehensive income	(384)	1,480	3,682	(397)
Balance, end of period	(44,170)	(45,197)	(44,170)	(45,197)
Accumulated other comprehensive income (loss) | Adjusted balance, beginning of period
Change in accumulated other comprehensive income (loss)
Balance, beginning of period				(44,800)
Net unrealized gains (losses) on debt securities
Change in accumulated other comprehensive income (loss)
Balance, beginning of period	(2,044)	(3,682)	(2,837)	(3,744)
Other comprehensive income before reclassifications	523	1,381	1,502	1,533
Increase (decrease) due to amounts reclassified from AOCI	(73)	(46)	(259)	(136)
Total other comprehensive income	450	1,335	1,243	1,397
Balance, end of period	(1,594)	(2,347)	(1,594)	(2,347)
Debt valuation adjustment (DVA)
Change in accumulated other comprehensive income (loss)
Balance, beginning of period	(684)	(1,016)	(1,121)	(709)
Other comprehensive income before reclassifications	(1,044)	(155)	(613)	(474)
Increase (decrease) due to amounts reclassified from AOCI	23	5	29	17
Total other comprehensive income	(1,021)	(150)	(584)	(457)
Balance, end of period	(1,705)	(1,166)	(1,705)	(1,166)
Cash flow hedges
Change in accumulated other comprehensive income (loss)
Balance, beginning of period	(141)	(629)	(220)	(1,406)
Other comprehensive income before reclassifications	(75)	(305)	(267)	14
Increase (decrease) due to amounts reclassified from AOCI	100	161	371	619
Total other comprehensive income	25	(144)	104	633
Balance, end of period	(116)	(773)	(116)	(773)
Benefit plans
Change in accumulated other comprehensive income (loss)
Balance, beginning of period	(5,690)	(5,794)	(5,627)	(6,050)
Other comprehensive income before reclassifications	(20)	1	(171)	164
Increase (decrease) due to amounts reclassified from AOCI	46	48	134	141
Total other comprehensive income	26	49	(37)	305
Balance, end of period	(5,664)	(5,745)	(5,664)	(5,745)
CTA, net of hedges
Change in accumulated other comprehensive income (loss)
Balance, beginning of period	(35,232)	(35,573)	(38,047)	(32,885)
Other comprehensive income before reclassifications	138	416	2,941	(2,272)
Increase (decrease) due to amounts reclassified from AOCI	(3)	0	9	0
Total other comprehensive income	135	416	2,950	(2,272)
Balance, end of period	(35,097)	(35,157)	(35,097)	(35,157)
CTA, net of hedges | In offices outside North America
Change in accumulated other comprehensive income (loss)
Balance, end of period		(9,000)		(9,000)
Excluded component of fair value hedges
Change in accumulated other comprehensive income (loss)
Balance, beginning of period	(45)	(39)	(52)	(40)
Other comprehensive income before reclassifications	11	(8)	15	4
Increase (decrease) due to amounts reclassified from AOCI	0	(1)	3	(12)
Total other comprehensive income	11	(9)	18	(8)
Balance, end of period	(34)	(48)	(34)	(48)
Long-duration insurance contracts
Change in accumulated other comprehensive income (loss)
Balance, beginning of period	50	56	52	34
Other comprehensive income before reclassifications	(10)	(17)	(12)	6
Increase (decrease) due to amounts reclassified from AOCI	0	0	0	(1)
Total other comprehensive income	(10)	(17)	(12)	5
Balance, end of period	$ 40	$ 39	$ 40	$ 39