Earnings (Loss) Per Share ("EPS") (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] | |||||||||||||||||
Net income (loss) | $ 35.5 | $ 50.7 | $ 37.1 | $ 2.5 | $ 26.6 | $ 38.1 | $ 28.5 | $ (2.3) | $ 125.8 | $ 90.9 | $ (29.4) | ||||||
Payments of Dividends | (201.8) | (188.6) | (196.3) | ||||||||||||||
Net income (loss) available for common shareholders, basic and diluted | $ 124.4 | $ 90.9 | $ (29.4) | ||||||||||||||
Weighted Average Number of Shares Outstanding, Basic | 138,500,000 | 137,900,000 | 137,300,000 | ||||||||||||||
Dilutive potential shares from grants of RSUs, PRSUs and stock options | 400,000 | [1] | 500,000 | [1] | 0 | ||||||||||||
Weighted Average Number of Shares Outstanding, Diluted | [1] | 138,900,000 | [2] | 138,400,000 | 137,300,000 | ||||||||||||
Non-controlling interests | |||||||||||||||||
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] | |||||||||||||||||
Payments of Dividends | $ 1.4 | $ 0.0 | $ 0.0 | ||||||||||||||
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | 1,953,407 | ||||||||||||||||
Stock Compensation Plan | |||||||||||||||||
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] | |||||||||||||||||
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 100,000 | 500,000 | 700,000 | ||||||||||||||
Non-controlling interests | |||||||||||||||||
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] | |||||||||||||||||
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 1,100,000 | ||||||||||||||||
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