Long-Term Debt and Revolving Promissory Note (Tables)

6 Months Ended

Jun. 30, 2017

Debt Disclosure [Abstract]

Schedule of long-term debt

Long-term debt, including unamortized discounts and premiums, unamortized debt issuance costs and note payable - affiliate, were as follows:

	Interest Rates	Maturities	As of   June 30, 2017			As of   December 31, 2016
			(Dollars in millions)
Senior notes	6.125% - 7.750%	2021 - 2057	$	7,294		7,259
Term loan	2.980%	2025	100			100
Capital lease and other obligations	Various	Various	40			32
Unamortized premiums, net			—			4
Unamortized debt issuance costs			(151		)	(134	)
Total long-term debt			7,283			7,261
Less current maturities			(17		)	(514	)
Long-term debt, excluding current maturities			$	7,266		6,747
Note payable - affiliate	6.710%	2022	$	944		914