Divestitures (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net proceeds from sale of businesses and related property				$ 114.7	$ 0.0	$ 0.0
Gain (Loss) on Disposition of Business and Related Property				(27.0)	(1.1)	0.0
Brazil Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on sale of business				(37.5)	0.0	0.0
Brazil Business [Member] | 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				4.2
Net assets sold				14.1
AOCL reclassification adjustments, primarily foreign currency translation				24.7
Direct costs to sell				2.9
Loss on sale of business				37.5
Australia, New Zealand and Asia Businesses [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on sale of business				(13.3)	$ 0.0	$ 0.0
Australia, New Zealand and Asia Businesses [Member] | 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				82.9
Net assets sold				87.2
AOCL reclassification adjustments, primarily foreign currency translation				3.2
Direct costs to sell				5.8
Loss on sale of business				13.3
Disposal Group, Including Discontinued Operation, Gain (Loss)	$ (1.2)	$ (10.3)
Milperra Property [Member] | 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 businesses and related property			$ 37.2