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Balance Sheet Information (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Balance Sheet Related Disclosures [Abstract]      
Depreciation expense for property, plant and equipment $ 239.6 $ 201.7 $ 183.6
Assets financed under capital leases included in total property, plant and equipment $ 13.0 $ 28.2