Accumulated Other Comprehensive Loss - Reclassifications out of AOCI (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Assets held for sale	$ 12	$ 1,853
Net loss on sale of businesses	123	493	$ 0
Income tax (benefit) expense	(2)	256	197
NET (LOSS) INCOME	(2,004)	(4,793)	$ 586
Decrease (Increase) in Net Income | Defined benefit plans and foreign currency adjustment
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax (benefit) expense	0
NET (LOSS) INCOME	(328)
Decrease (Increase) in Net Income | Foreign Currency Translation Adjustments and Other
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Assets held for sale	353
Net loss on sale of businesses	(3)	(112)
Net loss (gain) on sale of businesses, including held for sale	350
Income tax (benefit) expense		0
NET (LOSS) INCOME		$ 112
Decrease (Increase) in Net Income | Reclassification of Net Actuarial Loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Assets held for sale	(24)
Net loss on sale of businesses	(2)
Net loss (gain) on sale of businesses, including held for sale	$ (22)