Earnings Per Share (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Numerator:
Income (Loss) from Continuing Operations Attributable to Parent	$ 44.9	$ 36.7	$ 107.9	$ (98.5)
Less Undistributed Earnings (Loss) Allocated to Nonvested Stock	0.0	0.0	0.0	0.0
Net income available to common shareholders for basic earnings per share and diluted earnings per share	$ 44.9	$ 36.7	$ 107.9	$ (98.5)
Denominator:
Weighted Average Number of Shares Outstanding, Basic	78,671,509	85,326,526	79,225,703	86,514,517
Effect of dilutive securities:
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	641,265	830,249	654,519	0
Weighted average number of shares outstanding, assuming dilution of stock options and awards	79,312,774	86,156,775	79,880,222	86,514,517