Investments in Unconsolidated Affiliates Hamer (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Realized Gain (Loss) on Disposal	$ 20.0
Equity in earnings of unconsolidated affiliates, net of tax	6.8	$ 12.5	$ 14.1	$ 26.3
Hamer, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity in earnings of unconsolidated affiliates, net of tax	$ 1.1	$ 0.4	$ 1.6	$ 0.8