Inventories

12 Months Ended

Dec. 31, 2015

Energy Related Inventory [Abstract]

Inventories

2. Inventories

The following summarizes the major classes of inventories included in other current assets at December 31:

millions	2015		2014
Oil	$	116	$	133
Natural gas	36		27
NGLs	64		83
Total inventories	$	216	$	243