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Condensed Consolidated Statements of Cash Flows (Parentheticals) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Statement of Cash Flows [Abstract]    
Cash paid for interest, net of capitalized interest $ 22.0 $ 23.7
Income taxes paid, net of refunds 3.4 8.0
Net interest payments allocated to discontinued operations (5.3) (5.7)
Tax payments, net of refunds, allocated to discontinued operations (1.4) (0.7)
Non-cash additions to property, plant and equipment $ 3.1 $ 7.1