Inventories

6 Months Ended

Jun. 30, 2015

Energy Related Inventory [Abstract]

Inventories

3. Inventories

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

millions	June 30, 2015		December 31, 2014
Oil	$	111	$	133
Natural gas	30		27
NGLs	62		83
Total inventories	$	203	$	243