EQUITY - Schedule of Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Equity [Abstract]
Unrealized gains/(losses), pretax	$ 364	$ (216)	$ 65
Unrealized gains/(losses), tax	(34)	7	(7)
Unrealized gains/(losses), after tax	330	(209)	58
Reclassified to net earnings, pretax	95	(54)	(103)
Reclassified to net earnings, tax	(10)	7	13
Reclassified to net earnings, after tax	85	(47)	(90)
Derivatives qualifying as cash flow hedges, pretax	459	(270)	(38)
Derivatives qualifying as cash flow hedges, tax	(44)	14	6
Derivatives qualifying as cash flow hedges, after tax	415	(256)	(32)
Actuarial losses, pretax	220	(134)	(143)
Actuarial losses, tax	(40)	25	28
Actuarial losses, after tax	180	(109)	(115)
Amortization, pretax	41	33	55
Amortization, tax	(10)	(6)	(11)
Amortization, after tax	31	27	44
Settlements, pretax	(6)	10	1,640
Settlements, tax	1	(3)	(366)
Settlements, after tax	(5)	7	1,274
Pension and postretirement benefits, pretax	255	(91)	1,552
Pension and postretirement benefits, tax	(49)	16	(349)
Pension and postretirement benefits, after tax	206	(75)	1,203
Unrealized (losses)gains, pretax	(11)	7	42
Unrealized (losses)gains, tax	2	(1)	(9)
Unrealized (losses)gains, after tax	(9)	6	33
Realized (losses)gains, pretax	0	(1)	3
Realized (losses)gains, tax	0	0	0
Realized (losses)gains, after tax	0	(1)	3
Marketable debt securities, pretax	(11)	6	45
Marketable debt securities, tax	2	(1)	(9)
Marketable debt securities, after tax	(9)	5	36
Foreign currency translation, pretax	(14)	(19)	43
Foreign currency translation, tax	(27)	26	(8)
Foreign currency translation, after tax	(41)	7	35
Other Comprehensive Income/(Loss), pretax	689	(374)	1,602
Other Comprehensive Income/(Loss), tax	(118)	55	(360)
Other Comprehensive Income/(Loss), after tax	$ 571	$ (319)	$ 1,242