Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2017

Supplemental Cash Flow Information [Abstract]

Schedule of Cash Flow, Supplemental Disclosures

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

	Year Ended December 31,
	2017		2016		2015
Cash paid during the period for interest, net of amounts capitalized	$	510	$	242	$	136
Non-cash conveyance of assets	—		—		13