Revenue - Revenue by Country (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Disaggregation of Revenue [Line Items]
Revenue	$ 1,367.5	$ 1,386.9	$ 2,750.1	$ 2,756.8
United States
Disaggregation of Revenue [Line Items]
Revenue	991.3	981.2	2,010.2	1,955.9
Canada
Disaggregation of Revenue [Line Items]
Revenue	33.2	37.0	66.2	70.6
Mexico
Disaggregation of Revenue [Line Items]
Revenue	29.7	30.0	57.2	60.4
Puerto Rico
Disaggregation of Revenue [Line Items]
Revenue	19.6	26.2	38.8	46.0
Brazil
Disaggregation of Revenue [Line Items]
Revenue	8.2	9.0	16.7	18.5
Americas
Disaggregation of Revenue [Line Items]
Revenue	1,082.0	1,083.4	2,189.1	2,151.4
France
Disaggregation of Revenue [Line Items]
Revenue	64.6	72.0	128.9	143.9
Switzerland
Disaggregation of Revenue [Line Items]
Revenue	49.9	52.8	99.4	102.5
Portugal
Disaggregation of Revenue [Line Items]
Revenue	46.7	51.2	91.5	102.3
United Kingdom
Disaggregation of Revenue [Line Items]
Revenue	30.5	28.5	56.7	57.5
Russia
Disaggregation of Revenue [Line Items]
Revenue	28.8	25.6	54.2	51.7
Italy
Disaggregation of Revenue [Line Items]
Revenue	20.7	19.3	41.3	39.8
Ireland
Disaggregation of Revenue [Line Items]
Revenue	10.9	11.7	21.0	23.0
Germany
Disaggregation of Revenue [Line Items]
Revenue	9.9	14.8	21.0	31.2
Other
Disaggregation of Revenue [Line Items]
Revenue	16.9	22.0	34.9	42.8
EMEA
Disaggregation of Revenue [Line Items]
Revenue	278.9	297.9	548.9	594.7
Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue	$ 6.6	$ 5.6	$ 12.1	$ 10.7