Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2015

Commitments and Contingencies

Minimum lease payments under capital and operating leases with non-cancelable terms in excess of one year

Minimum lease payments under capital and operating leases with non-cancelable terms in excess of one year as of December 31, 2015, were as follows:

			Operating
(Millions)	Capital Leases		Leases
2016	$	11	$	234
2017		6		191
2018		4		134
2019		3		86
2020		3		72
After 2020		32		226
Total	$	59	$	943
Less: Amounts representing interest		5
Present value of future minimum lease payments		54
Less: Current obligations under capital leases		8
Long-term obligations under capital leases	$	46