Divestitures (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on sale of business				$ 12.0	$ 0.0
Net proceeds from sale of business and related property				111.8	0.0
Disposal Group, Including Discontinued Operation, Assets [Abstract]
Loss on assets held for sale	$ 31.4		$ 0.0	31.4	$ 0.0
Liabilities held for sale
Short-term debt	3.8			3.8		$ 0.9
Australia, New Zealand and Asia Businesses | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash received from the buyer				80.1
Net assets sold				(83.4)
AOCI reclassification adjustments, primarily foreign currency translation				(3.2)
Direct costs to sell				(5.5)
Loss on sale of business				(12.0)
Impairment reserve		$ 10.3
Milperra Property | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Direct costs to sell				(1.5)
Loss on sale of business				(23.8)
Net proceeds from sale of business and related property				37.2
Brazil Business | Discontinued Operations, Held-for-sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
AOCI reclassification adjustments, primarily foreign currency translation				(19.7)
Disposal Group, Including Discontinued Operation, Assets [Abstract]
Accounts and notes receivable, net of allowances	4.5			4.5
Inventories, net	5.0			5.0
Other assets	2.1			2.1
Loss on assets held for sale				(31.4)
Total assets held for sale	11.6			11.6
Liabilities held for sale
Short-term debt	1.4			1.4
Accounts payable	2.2			2.2
Accrued expenses	3.5			3.5
Income taxes payable	0.1			0.1
Other liabilities	0.2			0.2
Total liabilities held for sale	$ 7.4			$ 7.4