Equity Narratives (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended			6 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Jul. 26, 2016
Subsequent Event [Line Items]
Treasury Stock, Shares, Acquired		3,309,944
Treasury Stock, Value, Acquired, Par Value Method				$ 81.5
Treasury Stock Acquired, Average Cost Per Share				$ 24.62
Stock Repurchase Program, Remaining Authorized Repurchase Amount		$ 199.5		$ 199.5
Dividends, Common Stock, Cash				$ 25.2
Dividends declared per share		$ 0.13	$ 0.10	$ 0.25	$ 0.20
Subsequent Event [Member]
Subsequent Event [Line Items]
Treasury Stock, Shares, Acquired	267,158
Treasury Stock, Value, Acquired, Par Value Method	$ 7.5
Treasury Stock Acquired, Average Cost Per Share	$ 28.06
Stock Repurchase Program, Remaining Authorized Repurchase Amount						$ 192.0