Condensed Consolidated Statements Of Cash Flows (Parenthetical) - USD ($) $ in Millions		6 Months Ended
	Apr. 30, 2015	Jun. 30, 2015	Jun. 30, 2014
Condensed Consolidated Statements Of Cash Flows [Abstract]
Issuance of debt, original issue discount	$ 3.1	$ 6.1	$ 2.9