Inventories

9 Months Ended

Sep. 30, 2016

Inventory Disclosure [Abstract]

Inventories

4.  Inventories

Inventories consisted of the following:

	September 30,		December 31,
	2016		2015
	(In millions)
Crude oil and natural gas liquids	$	104	$	144
Materials and supplies		299		255
Total inventories	$	403	$	399