Subsequent Events (Details) - Share Repurchase Program [Member] - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
	Apr. 12, 2017	Mar. 31, 2017
Subsequent Event [Line Items]
Stock Repurchased During Period, Shares		2,121,232
Proceeds from (Repurchase of) Equity		$ 59.9
Treasury Stock Acquired, Average Cost Per Share		$ 28.22
Subsequent Event [Member]
Subsequent Event [Line Items]
Stock Repurchased During Period, Shares	524,550
Proceeds from (Repurchase of) Equity	$ 15.1
Treasury Stock Acquired, Average Cost Per Share	$ 28.85