CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
NET INCOME (LOSS)	$ 314	$ (6,165)
Items related to employee benefit plans:
Change in net actuarial loss, net of ($12) and ($14) tax	38	43
Change in net prior service credit, net of $- and ($1) tax	1	1
Realized loss on interest rate swaps	5	0
Unrealized holding loss on interest rate swaps, net of $26 and $6 tax	(80)	(17)
Foreign currency translation adjustment and other net of $23 and ($1) tax	(239)	5
Other comprehensive (loss) income	(275)	32
COMPREHENSIVE INCOME (LOSS)	$ 39	$ (6,133)