Goodwill and Intangibles - Goodwill (Details) $ in Millions	6 Months Ended	12 Months Ended
	Jul. 01, 2018 USD ($) item	Dec. 31, 2017 USD ($)
Gross Balance
Balance at the beginning of the period	$ 717.6	$ 699.8
Acquired During the Period	1.5	2.0
Foreign Currency Translation and Other	(5.5)	15.8
Balance at the end of the period	713.6	717.6
Accumulated Impairment Losses
Balance at the beginning of the period	(167.1)	(167.1)
Balance at the end of the period	(167.1)	(167.1)
Net Goodwill	$ 546.5	550.5
Number of geographic segments | item	3
Americas
Gross Balance
Balance at the beginning of the period	$ 437.4	434.7
Acquired During the Period	1.5	2.0
Foreign Currency Translation and Other	(0.5)	0.7
Balance at the end of the period	438.4	437.4
Accumulated Impairment Losses
Balance at the beginning of the period	(24.5)	(24.5)
Balance at the end of the period	(24.5)	(24.5)
Net Goodwill	413.9	412.9
Europe
Gross Balance
Balance at the beginning of the period	249.3	234.9
Foreign Currency Translation and Other	(4.2)	14.4
Balance at the end of the period	245.1	249.3
Accumulated Impairment Losses
Balance at the beginning of the period	(129.7)	(129.7)
Balance at the end of the period	(129.7)	(129.7)
Net Goodwill	115.4	119.6
APMEA
Gross Balance
Balance at the beginning of the period	30.9	30.2
Foreign Currency Translation and Other	(0.8)	0.7
Balance at the end of the period	30.1	30.9
Accumulated Impairment Losses
Balance at the beginning of the period	(12.9)	(12.9)
Balance at the end of the period	(12.9)	(12.9)
Net Goodwill	$ 17.2	$ 18.0