Inventories

9 Months Ended

Sep. 30, 2015

Energy Related Inventory [Abstract]

Inventories

3. Inventories

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

millions	September 30, 2015		December 31, 2014
Oil	$	108	$	133
Natural gas	37		27
NGLs	57		83
Total inventories	$	202	$	243