Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2015

Debt Disclosure [Abstract]

Debt

Our debt consists of the following:

	December 31, 2015					December 31, 2014
(millions, except percentages)	Debt			Interest Rate		Debt			Interest Rate
Credit Facility, due August 27, 2020	$	—		—		$	—		—
Capital Lease and Other Obligations	403			—		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 (1)	693			5.63	%	—			—	%
4.15% Senior Notes, due December 15, 2021	1,000			4.15	%	1,000			4.15	%
5.875% Senior Notes, due June 1, 2022 (1)	597			5.88	%	—			—	%
7.25% Senior Notes, due October 15, 2023	100			7.25	%	100			7.25	%
5.875% Senior Notes, due June 1, 2024 (1)	499			5.88	%	—			—
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	$	7,976				$	6,197
Unamortized Discount	(24		)			(26		)
Unamortized Premium (2)	113					—
Unamortized Debt Issuance Costs	(36		)			(35		)
Total Debt, Net of Discount	$	8,029				$	6,136
Less Amounts Due Within One Year
Capital Lease and Other Obligations	(53		)			(68		)
Long-Term Debt Due After One Year	$	7,976				$	6,068

⁽¹⁾ Represents senior notes assumed in the Rosetta Merger. See Note 3. Merger, Acquisitions and Divestitures.

⁽²⁾ Debt premium is attributable to senior notes assumed in the Rosetta Merger.

Annual maturities of outstanding debt

Annual Debt Maturities   Annual maturities of outstanding debt, excluding capital lease payments, are as follows:

(millions)	Debt Principal Payments
December 31, 2015
2016	$	—
2017	—
2018	—
2019	1,000
2020	—
Thereafter	6,573
Total	$	7,573