Shareholders' Equity Share Repurchase Plan Information (Details) - USD ($) $ in Millions, None in scaling factor is -9223372036854775296	2 Months Ended	4 Months Ended	10 Months Ended
	Feb. 18, 2015	Jun. 30, 2015	Dec. 31, 2014	Feb. 19, 2015	Feb. 07, 2014
Preferred Stock, Shares Outstanding		0	0
Stock Repurchased and Retired During Period, Value		$ 9.9	$ 36.7
Stock Repurchased and Retired During Period, Shares	335,251	272,775	910,990
Stock Repurchase Program, Authorized Amount				$ 50.0	$ 50.0
Stock Repurchase Program, Remaining Authorized Repurchase Amount		$ 40.1	$ 13.3
Preferred Stock, No Par Value