Basic and Diluted Income Per Common Share (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Calculation of Basic Income (Loss) Per Common Share to Diluted Income (Loss) Per Common Share

The following table presents a reconciliation of net income (loss) used in basic and diluted EPS calculations (in millions, except per share amounts):

	Years Ended December 31,
	2019			2018
Net (loss) income attributable to common stock and participating preferred stockholders	$	(31.5)		$	155.6
Earnings allocable to common shares:
Numerator for basic and diluted earnings per share
Participating shares at end of period:
Weighted-average common stock outstanding	44.8			44.3
Unvested restricted stock	0.6			0.4
Preferred stock (as-converted basis)	2.1			4.9
Total	47.5			49.6
Percentage of loss allocated to:
Common stock	94.3		%	89.3		%
Unvested restricted stock	1.3		%	0.8		%
Preferred stock	4.4		%	9.9		%
Net (loss) income attributable to common stock, basic	$	(29.7)		$	139.0
Distributed and Undistributed earnings to Common Shareholders:
Effect of assumed shares under treasury stock method for stock options and restricted shares and if-converted method for convertible instruments	—			(3.3)
Income from the dilutive impact of subsidiary securities	—			—
Net (loss) income attributable to common stock, diluted	$	(29.7)		$	135.7
Denominator for basic and dilutive earnings per share
Weighted average common shares outstanding - basic	44.8			44.3
Effect of assumed shares under treasury stock method for stock options and restricted shares and if-converted method for convertible instruments	—			2.5
Weighted average common shares outstanding - diluted	44.8			46.8
Net (loss) income attributable to participating security holders - Basic	$	(0.66)		$	3.14
Net (loss) income attributable to participating security holders - Diluted	$	(0.66)		$	2.90