Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified		1 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended		0 Months Ended
	May 31, 2014 Tax Years 2007, 2009 and 2010	Sep. 30, 2013 Tax Year 2008	Aug. 01, 2014 Selling and Administrative Costs Tax Year 2008	Aug. 01, 2014 Selling and Administrative Costs Tax Year 2008	Aug. 01, 2014 Other Income Tax Year 2008	Aug. 01, 2014 Other Income Tax Year 2008	Jul. 09, 2014 Minimum Reduction in Taxes Tax Years 2007 - 2012	Sep. 10, 2014 Subsequent Event	Sep. 10, 2014 Subsequent Event Tax Years 2005 - 2006	Sep. 10, 2014 Subsequent Event Tax Years 2007, 2009 and 2010	Sep. 10, 2014 Subsequent Event Selling and Administrative Costs Tax Years 2007, 2009 and 2010
Gain Contingencies
Recovery of excessive taxes and interest		$ 0.7	$ 0.6	$ 0.6	$ 0.1	$ 0.1		$ 3.9	$ 1.6		$ 1.6
Remaining amount of claim being sought by Company										1.2
Additional refund amount	0.6
Potential aggregate recovery (maximum)							$ 3.2