Supplemental Cash Flow Information (Tables)

9 Months Ended

Sep. 30, 2017

Supplemental Cash Flow Information [Abstract]

Schedule of Cash Flow, Supplemental Disclosures

The following table (in millions) provides supplemental disclosure of cash flow information: 

	Nine Months Ended September 30,
	2017		2016
Cash paid during the period for interest, net of amounts capitalized	$	360	$	30
Contribution of assets to equity method investment	14		—