Debt (Tables)

9 Months Ended

Sep. 30, 2015

Debt [Abstract]

Schedule of debt

Debt consists of the following:

	September 30, 2015					December 31, 2014
(millions, except percentages)	Debt			Interest Rate		Debt			Interest Rate
Credit Facility, due August 27, 2020	$	—		—	%	$	—		—	%
Capital Lease and Other Obligations	424			—	%	413			—	%
8.25% Senior Notes, due March 1, 2019	1,000			8.25	%	1,000			8.25	%
5.625% Senior Notes, due May 1, 2021	693			5.625	%	—			—	%
4.15% Senior Notes, due December 15, 2021	1,000			4.15	%	1,000			4.15	%
5.875% Senior Notes, due June 1, 2022	597			5.875	%	—			—	%
7.25% Senior Notes, due October 15, 2023	100			7.25	%	100			7.25	%
5.875% Senior Notes, due June 1, 2024	499			5.875	%	—			—	%
3.90% Senior Notes, due November 15, 2024	650			3.90	%	650			3.90	%
8.00% Senior Notes, due April 1, 2027	250			8.00	%	250			8.00	%
6.00% Senior Notes, due March 1, 2041	850			6.00	%	850			6.00	%
5.25% Senior Notes, due November 15, 2043	1,000			5.25	%	1,000			5.25	%
5.05% Senior Notes, due November 15, 2044	850			5.05	%	850			5.05	%
7.25% Senior Debentures, due August 1, 2097	84			7.25	%	84			7.25	%
Total	7,997					6,197
Unamortized Discount	(25		)			(26		)
Unamortized Premium	118					—
Total Debt, Net of Unamortized Discount and Premium	8,090					6,171
Less Amounts Due Within One Year
Capital Lease Obligations	(57		)			(68		)
Long-Term Debt Due After One Year	$	8,033				$	6,103