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EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 1 Months Ended | 3 Months Ended
--- | --- | ---
Jun. 30, 2014 | Dec. 31, 2016 | Dec. 31, 2015
Basic EPS: |  |  |
Net Income |  | $ 45.2 | $ 46.9
Less: Income allocated to participating securities |  | 0.1 | 0.2
Net Income Available to Common Shareholders |  | $ 45.1 | $ 46.7
Weighted Average Shares Outstanding, Basic (in Shares) |  | 45.5 | 43.2
Basic Earnings Per Share of Common Stock (in dollars per share) |  | $ 0.99 | $ 1.08
Diluted EPS: |  |  |
Net Income |  | $ 45.2 | $ 46.9
Less: Income allocated to participating securities |  | 0.1 | 0.2
Net Income Available to Common Shareholders |  | $ 45.1 | $ 46.7
Weighted Average Shares Outstanding, Basic (in Shares) |  | 45.5 | 43.2
Dilutive Effect of Stock Options, Restricted Stock and Restricted Stock Units (in shares) |  | 0.2 | 0.2
Weighted Average Diluted Shares (in shares) |  | 45.7 | 43.4
Diluted Earnings Per Share of Common Stock (in dollars per share) |  | $ 0.99 | $ 1.08
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |
Equity units, contract annual rate | 2.00% |  |
Restricted stock and stock units subject to performance and/or market conditions |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |
Outstanding shares excluded from calculation of diluted EPS (in shares) |  | 0.4 | 0.4

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