Valuation And Qualifying Accounts And Reserves (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for doubtful receivables
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		$ 17.2	$ 17.6	$ 20.6
Additions Charged to Cost and Expenses		2.6	4.9	6.1
Deductions	[1]	9.9	5.3	9.1
Balance at End of Period		9.9	17.2	17.6
Excess and obsolete inventory reserve, LIFO basis
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		21.9	21.9	19.4
Additions Charged to Cost and Expenses		9.8	10.0	11.8
Deductions		7.0	10.0	9.3
Balance at End of Period		24.7	21.9	21.9
Tax valuation allowance
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		27.1	25.4	32.2
Additions Charged to Cost and Expenses		(0.4)	1.0	(3.4)
Deductions		0.1	(0.7)	3.4
Balance at End of Period		$ 26.6	$ 27.1	$ 25.4

[1] Uncollectible accounts charged off, net of recoveries.