CONSOLIDATED CONDENSED 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), Including Portion Attributable to Noncontrolling Interest		$ (2,013)	$ 631
Other comprehensive income (loss) items:
Foreign currency translation loss		(2)	0
Gains (losses) on derivatives	[1]	(2)	2
Pension and postretirement (losses) gains	[2]	(111)	2
Reclassification of losses on derivatives	[3]	2	0
Other comprehensive (loss) income, net of tax		(113)	4
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total		$ (2,126)	$ 635

[1] Net of tax of $1 million and zero for the three months ended March 31, 2020 and 2019, respectively.

[2] Net of tax of $31 million and $(1) million for the three months ended March 31, 2020 and 2019, respectively.

[3] Net of tax of $(1) million and zero for the three months ended March 31, 2020 and 2019, respectively.