Earnings Per Share (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Numerator:
Income (Loss) from Continuing Operations Attributable to Parent	$ 63.0	$ (135.2)
Less Undistributed Earnings (Loss) Allocated to Nonvested Stock	0.0	0.0
Net income available to common shareholders for basic earnings per share and diluted earnings per share	$ 63.0	$ (135.2)
Denominator:
Weighted Average Number of Shares Outstanding, Basic	79,769,761	87,670,640
Effect of dilutive securities:
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	667,772	0
Weighted average number of shares outstanding, assuming dilution of stock options and awards	80,437,533	87,670,640