Long-Term Debt and Revolving Promissory Note (Tables)

6 Months Ended

Jun. 30, 2015

Debt Disclosure [Abstract]

Schedule of long-term debt, including unamortized discounts and premiums

Long-term debt, including unamortized discounts and premiums and note payable - affiliate, is summarized as follows:

	Interest Rates	Maturities	As of June 30,   2015			As of December 31, 2014
			(Dollars in millions)
Senior notes	6.125% - 8.375%	2016 - 2054	$	7,219		7,311
Term loan	1.940%	2025	100			—
Capital lease and other obligations	Various	Various	18			32
Unamortized premiums, net			25			36
Total long-term debt			7,362			7,379
Less current maturities			(248		)	(117	)
Long-term debt, excluding current maturities			$	7,114		7,262
Note payable - affiliate	6.658%	2022	$	827		796