Summary Of Significant Accounting Policies (Narrative) (Details) $ in Millions			12 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2018 reporting_unit	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Accounting Policies [Abstract]
Percentage of LIFO inventory			50.00%
Number of reporting units | reporting_unit			10
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification into Other (income) expense, net	$ 2.3	$ (1.1)
Cost of goods sold
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification into Other (income) expense, net				$ 17.4
Selling and administrative expenses
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification into Other (income) expense, net					$ 2.9