Acquisition and Discontinued Operations (Summary of Carrying Amount of Major Classes of Assets and Liabilities Related to EMEA and Pacific Rim Businesses) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 10.0
Total current assets discontinued operations	297.9	$ 306.1
Total assets	1,824.7	1,873.5
Current liabilities:
Total current liabilities	114.9	128.5
EMEA and Pacific Rim Business [Member]
Current assets:
Cash and cash equivalents	10.0
Accounts and notes receivable, net	62.4	61.4
Inventories, net	71.0	59.2
Income tax receivable	5.3	3.1
Other current assets	8.8	12.9
Total current assets discontinued operations	157.5	136.6
Property, plant, and equipment, less accumulated depreciation and amortization	103.4	131.3
Prepaid pension costs	26.2	26.1
Goodwill and intangible assets, net	7.1	7.2
Deferred income taxes	2.7	4.0
Other non-current assets	1.0	0.9
Total non-current assets of discontinued operations	140.4	169.5
Total assets	297.9	306.1
Current liabilities:
Accounts payable and accrued expenses	70.6	78.6
Income tax payable	2.8	1.3
Total current liabilities	73.4	79.9
Pension benefit liabilities	34.4	34.7
Other long-term liabilities	1.7	1.8
Deferred income taxes	5.4	12.1
Total non-current liabilities of discontinued operations	41.5	48.6
Total liabilities of discontinued operations	$ 114.9	$ 128.5