Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

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, 2016, were as follows:

			Operating
(Millions)	Capital Leases		Leases
2017	$	9	$	210
2018		7		161
2019		5		119
2020		4		89
2021		4		58
After 2021		30		188
Total	$	59	$	825
Less: Amounts representing interest		5
Present value of future minimum lease payments		54
Less: Current obligations under capital leases		9
Long-term obligations under capital leases	$	45