ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Components of AOCI (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	$ 8,180	$ 6,927
Other comprehensive income (loss), before reclassifications	(4)	3
Other comprehensive income (loss), net of tax	(49)	(37)
Ending balance	7,955	7,399
Non-controlling interest	0	1
Total
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(2,374)	(2,278)
Other comprehensive income (loss), before reclassifications	52	48
Amounts reclassified from other comprehensive income	3	10
Other comprehensive income (loss), net of tax	(49)	(38)
Ending balance	(2,423)	(2,316)
Unrealized Gain (Loss) on Cash Flow Hedges
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(10)	46
Other comprehensive income (loss), before reclassifications	(4)	4
Amounts reclassified from other comprehensive income	3	14
Other comprehensive income (loss), net of tax	7	10
Ending balance	(3)	56
Change in Retirement Plans’ Funded Status
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(351)	(285)
Other comprehensive income (loss), before reclassifications	0	1
Amounts reclassified from other comprehensive income	0	(4)
Other comprehensive income (loss), net of tax	0	(5)
Ending balance	(351)	(290)
Foreign Currency Translation
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(1,763)	(1,800)
Other comprehensive income (loss), before reclassifications	50	34
Amounts reclassified from other comprehensive income	0	0
Other comprehensive income (loss), net of tax	(50)	(34)
Ending balance	(1,813)	(1,834)
Share of Other Comprehensive Income (Loss) of Entities Using the Equity Method
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(250)	(239)
Other comprehensive income (loss), before reclassifications	6	9
Amounts reclassified from other comprehensive income	0	0
Other comprehensive income (loss), net of tax	(6)	(9)
Ending balance	$ (256)	$ (248)