Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	9 Months Ended		0 Months Ended
	Sep. 30, 2013 Tax Year 2008	Oct. 31, 2014 Selling and Administrative Costs Tax Year 2008	Oct. 31, 2014 Other Income Tax Year 2008	Dec. 09, 2014 Subsequent Event	Dec. 09, 2014 Subsequent Event Tax Years 2005 - 2006	Dec. 09, 2014 Subsequent Event Tax Years 2007, 2009 and 2010	Dec. 09, 2014 Subsequent Event Selling and Administrative Costs Tax Years 2007, 2009 and 2010	Dec. 10, 2014 Scenario, Forecast [Member] Tax Years 2007, 2009 and 2010	Dec. 10, 2014 Scenario, Forecast [Member] Minimum Reduction in Taxes Tax Years 2007 - 2012	Dec. 10, 2014 Scenario, Forecast [Member] Minimum Reduction in Taxes Tax Year 2014 [Member]
Gain Contingencies
Recovery of excessive taxes and interest	$ 0.7	$ 0.6	$ 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	$ 0.7