Basis of Presentation Basis of Presentation - Cequent Spinoff (Details) - USD ($) $ in Millions	3 Months Ended	7 Months Ended
	Mar. 31, 2015	Jun. 30, 2015
Presentation of spin-off costs [Line Items]
Cequent Spin-off, one-time costs		$ 30
Discontinued Operations [Member]
Presentation of spin-off costs [Line Items]
Cequent Spin-off, one-time costs	$ 4