Consolidated Balance Sheets (Parentheticals) - Finite-Lived Intangible Assets, Major Class Name [Domain] - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Allowance for doubtful accounts	$ 0	$ 0
Accumulated Amortization	$ 73	$ 73
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	1,000	1,000
Common stock, shares issued	1,000	1,000