Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2014

Commitments and Contingencies

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

		Capital Leases		Operating Leases
(Millions)
2015		$	11	$	225
2016			11		164
2017			7		126
2018			4		75
2019			3		54
After 2019			37		187
	Total	$	73	$	831
Less: Amounts representing interest			6
Present value of future minimum lease payments			67
Less: Current obligations under capital leases			8
Long-term obligations under capital leases		$	59