CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
NET INCOME (LOSS)	$ 302	$ 272	$ (5,492)	$ 679
Items related to employee benefit plans:
Change in net actuarial loss, net of ($13), ($11), ($41) and ($33) tax	41	34	126	101
Change in net prior service credit, net of ($1), $-, ($2) and ($2) tax	2	3	5	7
Unrealized holding loss on interest rate swaps, net of $3 and $17 tax	(11)		(54)
Foreign currency translation adjustment and other net of $22, ($1), $24 and $29 tax	(112)	(1)	(115)	(161)
Other comprehensive (loss) income	(80)	36	(38)	(53)
COMPREHENSIVE INCOME (LOSS)	$ 222	$ 308	$ (5,530)	$ 626