Earnings Per Share ("EPS") (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Net income (loss) from continuing operations	$ 1.3	$ (11.4)	$ (10.0)	$ (26.3)
Income from discontinued operations, net of tax	34.0	28.5	65.5	56.2
Net Income	$ 35.3	$ 17.1	$ 55.5	$ 29.9
Weighted Average Shares Outstanding:
Basic weighted average shares outstanding (in shares)	47.1	46.7	47.0	46.7
Dilutive effect of stock options and restricted share unit awards (in shares)	1.1	0.0	0.0	0.0
Diluted weighted average shares outstanding (in shares)	48.2	46.7	47.0	46.7
Basic Earnings (Loss) Per Share
Continuing operations (in dollars per share)	$ 0.03	$ (0.24)	$ (0.21)	$ (0.56)
Discontinued operations (in dollars per share)	0.72	0.61	1.39	1.20
Basic Earnings Per Share (in dollars per share)	0.75	0.37	1.18	0.64
Diluted Earnings (Loss) Per Share
Continuing operations (in dollars per share)	0.03	(0.24)	(0.21)	(0.56)
Discontinued operations (in dollars per share)	0.70	0.61	1.39	1.20
Diluted Earnings Per Share (in dollars per share)	$ 0.73	$ 0.37	$ 1.18	$ 0.64
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		0.6	1.1	0.6

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

Name:	us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Per basic share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation.

+ References

No definition available.