Business Segment and Geographic Area Information - Segment Reporting, by Geographic Area (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	$ 1,507.7	$ 1,530.0	$ 1,509.3	$ 1,476.0	$ 1,109.9	$ 1,137.6	$ 1,094.7	$ 1,061.5	$ 6,023.0	$ 4,403.7	$ 4,298.1
Assets	7,059.2				4,863.0				7,059.2	4,863.0	4,603.4
Corporate and Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									(60.7)	(48.4)	(71.6)
Reportable Geographical Components | Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									5,170.4	3,643.3	3,601.7
Assets	6,260.1				4,046.4				6,260.1	4,046.4	3,923.2
Reportable Geographical Components | Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									695.5	593.1	569.9
Assets	603.4				607.1				603.4	607.1	491.9
Reportable Geographical Components | Asia Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									217.8	215.7	198.1
Assets	$ 195.7				$ 209.5				$ 195.7	$ 209.5	$ 188.3