Annual report pursuant to Section 13 and 15(d)

INCOME TAXES INCOME TAXES (Schedule of Components of Income Taxes) (Details)

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INCOME TAXES INCOME TAXES (Schedule of Components of Income Taxes) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Tax Contingency [Line Items]      
Current Federal Tax Expense (Benefit) $ (11.1) $ 8.2 $ (125.2)
Current State and Local Tax Expense (Benefit) (0.5) 0.3 (0.6)
Current Foreign Tax Expense (Benefit) (0.1) 0.9 11.7
Current Income Tax Expense (Benefit) (11.7) 9.4 (114.1)
Deferred Federal Income Tax Expense (Benefit) (0.5) 165.8 20.4
Deferred State and Local Income Tax Expense (Benefit) 0.0 0.0 (24.9)
Deferred Foreign Income Tax Expense (Benefit) 0.0 (5.9) 32.6
Deferred Income Tax Expense (Benefit) 0.0 159.8 (1,153.9)
Income Tax Expense (Benefit) (12.2) 169.3 (86.0)
Deferred Provision (Benefit) [Member]      
Income Tax Contingency [Line Items]      
Deferred Income Tax Expense (Benefit) $ (0.5) $ 159.9 $ 28.1