EQUITY - Schedule of Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Equity [Abstract]
Unrealized gains/(losses), pretax	$ 70	$ 585	$ 364
Unrealized gains/(losses), tax	(12)	(79)	(34)
Unrealized gains/(losses), after tax	58	506	330
Reclassified to net earnings, pretax	(334)	(524)	95
Reclassified to net earnings, tax	46	72	(10)
Reclassified to net earnings, after tax	(288)	(452)	85
Derivatives qualifying as cash flow hedges, pretax	(264)	61	459
Derivatives qualifying as cash flow hedges, tax	34	(7)	(44)
Derivatives qualifying as cash flow hedges, after tax	(230)	54	415
Actuarial gains (losses), pretax	(140)	146	220
Actuarial gains (losses), tax	25	(25)	(40)
Actuarial gains (losses), after tax	(115)	121	180
Amortization, pretax	0	21	41
Amortization, tax	0	(6)	(10)
Amortization, after tax	0	15	31
Settlements, pretax	0	11	(6)
Settlements, tax	0	(2)	1
Settlements, after tax	0	9	(5)
Pension and postretirement benefits, pretax	(140)	178	255
Pension and postretirement benefits, tax	25	(33)	(49)
Pension and postretirement benefits, after tax	(115)	145	206
Unrealized (losses) gains, pretax	3	(2)	(11)
Unrealized (losses) gains, tax	(1)	0	2
Unrealized (losses) gains, after tax	2	(2)	(9)
Foreign currency translation, pretax	84	(183)	(14)
Foreign currency translation, tax	(6)	(27)	(27)
Foreign currency translation, after tax	78	(210)	(41)
Other comprehensive income/(loss), pretax	(317)	54	689
Other comprehensive income/(loss), tax	52	(67)	(118)
Total Other Comprehensive Income/(Loss)	$ (265)	$ (13)	$ 571