Equity Narratives (Details) $ / shares in Units, $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2016 USD ($) shares	Sep. 30, 2016 USD ($) $ / shares
Subsequent Event [Line Items]
Treasury Stock, Shares, Acquired | shares	7,542,812
Treasury Stock, Value, Acquired, Par Value Method		$ 193.0
Treasury Stock Acquired, Average Cost Per Share | $ / shares		$ 25.59
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 88.0	$ 88.0