Commitments and Contingencies (Changes in Product Warranty Liabilities) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2018 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total warranty liability, beginning balance	$ (109.9)
Warranty claims paid	(21.7)
Changes resulting from issuance of new warranties	24.2
Changes in estimates associated with pre-existing liabilities	(3.3)
Changes in foreign currency translation rates and other	2.7
Total warranty liability, ending balance	(110.4)
Australia, New Zealand and Asia Businesses | Discontinued Operations, Held-for-sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total warranty liability, ending balance	$ (1.4)