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Condensed Consolidated Statements of Cash Flows (Parentheticals) - USD ($)
6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Statement of Cash Flows [Abstract]    
Cash paid for interest, net of capitalized interest $ 72,100,000 $ 63,600,000
Income taxes paid, net of refunds 89,900,000 81,800,000
Net interest payments allocated to discontinued operations   0
Tax payments, net of refunds, allocated to discontinued operations   4,300,000
Non-cash additions to property, plant and equipment $ 1,900,000 $ 1,000,000.0