Income Taxes (Components Of Deferred Tax Liabilities And Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Pension and other post-retirement benefits	$ 29.7	$ 39.1
Employment costs	34.7	47.2
Environmental reserves	45.8	46.5
Net operating loss carryforwards	33.3	42.0
Foreign tax credit carryforwards	37.4	8.7
Other, net	22.3	21.9
Gross deferred tax assets	203.2	205.4
Valuation allowances	(19.3)	(23.6)
Total deferred tax assets, net of valuation allowances	183.9	181.8
Deferred tax liabilities:
Tax and book basis differences associated with property, plant and equipment	(60.3)	(76.9)
Tax and book basis differences associated with intangibles	(135.8)	(135.2)
Other, net	(7.2)	(9.1)
Total deferred tax liabilities	(203.3)	(221.2)
Net deferred tax liabilities	$ (19.4)	$ (39.4)