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Segment Information (Reconciliation of Operating Profit from Segment to Consolidated) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Segment Reporting [Abstract] |  |
Operating income | $ 53.6 | $ 13.0
Less: interest expense | 18.2 | 20.7
Less: loss (gain) on debt extinguishment | 2.6 | (14.1)
Earnings before income taxes and equity in loss of unconsolidated entity | $ 32.8 | $ 6.4

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