CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2020		Jun. 30, 2019		Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ (8,131)		$ 635		$ (10,144)	$ 1,266
Other comprehensive income (loss) items:
Foreign currency translation gains (losses)	1		0		(1)	0
Gains (losses) on derivatives	0	[1]	(18)	[1]	(2)	(16)
Pension and postretirement (losses) gains	20	[2]	2	[2]	(91)	4
Reclassification of losses on derivatives	1	[3]	0	[3]	3	0
Other comprehensive (loss) income, net of tax	22		(16)		(91)	(12)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total	$ (8,109)		$ 619		$ (10,235)	$ 1,254

[1] Net of tax of zero and $5 million for the three months ended June 30, 2020 and 2019, respectively, and $1 million and $5 million for the six months ended June 30, 2020 and 2019, respectively.

[2] Net of tax of $(5) million and zero for the three months ended June 30, 2020 and 2019, respectively, and $26 million and $(1) million for the six months ended June 30, 2020 and 2019, respectively.

[3] Net of tax of zero for the three months ended June 30, 2020 and 2019, and $(1) million and zero for the six months ended June 30, 2020 and 2019, respectively.