Earnings Per Common Share (Tables)

12 Months Ended

Dec. 31, 2017

Dec. 31, 2016

Dec. 31, 2015

Schedule of Earnings Per Common Share, Basic and Diluted [Line Items]

Schedule of Calculation of Numerator and Denominator in Earnings Per Share

The following table shows the computation of basic and diluted EPS after consideration of the 1-for-5 reverse stock split that became effective 11:59 p.m. October 4, 2016:

	Year Ended December 31, 2017
(in millions, except per share amounts)	Continuing Operations		Discontinued Operations		Total
Numerator:
Net income	$	35.1	$	—	$	35.1
Preferred stock dividends	10.4		—		10.4
Net income applicable to common shareowners - basic and diluted	$	24.7	$	—	$	24.7
Denominator:
Weighted-average common shares outstanding - basic	42.2		—		42.2
Stock-based compensation arrangements	0.2		—		0.2
Weighted-average common shares outstanding - diluted	42.4		—		42.4
Basic earnings per common share	$	0.59	$	—	$	0.59
Diluted earnings per common share	$	0.58	$	—	$	0.58

	Year Ended December 31, 2016
(in millions, except per share amounts)	Continuing Operations		Discontinued Operations		Total
Numerator:
Net income	$	101.8	$	0.3	$	102.1
Preferred stock dividends	10.4		—		10.4
Net income applicable to common shareowners - basic and diluted	$	91.4	$	0.3	$	91.7
Denominator:
Weighted-average common shares outstanding - basic	42.0		42.0		42.0
Stock-based compensation arrangements	0.1		0.1		0.1
Weighted-average common shares outstanding - diluted	42.1		42.1		42.1
Basic and diluted earnings per common share	$	2.17	$	0.01	$	2.18

	Year Ended December 31, 2015
(in millions, except per share amounts)	Continuing Operations		Discontinued Operations		Total
Numerator:
Net income	$	290.8	$	62.9	$	353.7
Preferred stock dividends	10.4		—		10.4
Net income applicable to common shareowners - basic and diluted	$	280.4	$	62.9	$	343.3
Denominator:
Weighted-average common shares outstanding - basic	41.9		41.9		41.9
Stock-based compensation arrangements	0.1		0.1		0.1
Weighted-average common shares outstanding - diluted	42.0		42.0		42.0
Basic earnings per common share	$	6.69	$	1.50	$	8.19
Diluted earnings per common share	$	6.68	$	1.49	$	8.17