Revenue - Impact on Balance Sheet (Details) - USD ($) $ in Millions	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Assets
Inventories	$ 641.8	$ 585.9	$ 608.6
Prepaid expenses and other	116.9	105.6	63.9
Other assets	448.1	426.7	428.6
Liabilities
Other accrued liabilities	407.7	491.5	489.6
Deferred income taxes	167.1	155.9	152.9
Equity
Retained earnings (Accumulated deficit)	61.4	(9.3)	(21.4)
Noncontrolling interests	103.0	131.8	131.7
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Assets
Inventories	667.2		608.6
Prepaid expenses and other	69.1		63.9
Other assets	450.4		428.6
Liabilities
Other accrued liabilities	405.8		489.6
Deferred income taxes	164.0		152.9
Equity
Retained earnings (Accumulated deficit)	46.6		(21.4)
Noncontrolling interests	102.7		$ 131.7
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member]
Assets
Inventories	(25.4)	(22.7)
Prepaid expenses and other	47.8	41.7
Other assets	(2.3)	(1.9)
Liabilities
Other accrued liabilities	1.9	1.9
Deferred income taxes	3.1	3.0
Equity
Retained earnings (Accumulated deficit)	14.8	12.1
Noncontrolling interests	$ 0.3	$ 0.1