CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income		$ 631	$ 708
Other comprehensive income (loss) items:
Foreign currency translation gains		0	1
Unrealized gains (losses) on derivatives	[1]	2	(3)
Pension and postretirement gains (losses)	[2]	2	4
Reclassification of realized (gains) losses on derivatives	[3]	0	2
Other comprehensive income, net of tax		4	4
Comprehensive income		$ 635	$ 712

[1] Net of tax of zero and $1 for the three months ended March 31, 2019, and 2018, respectively.

[2] Net of tax of $(1) and $(1) for the three months ended March 31, 2019, and 2018, respectively.

[3] Net of tax of zero and $(1) for the three months ended March 31, 2019, and 2018, respectively.