Revenue - Revenue by Country (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	$ 1,342.4	$ 1,328.8	$ 4,099.2	$ 3,952.1
United States
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	942.5	941.1	2,898.4	2,866.8
Canada
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	37.0	37.1	107.6	105.8
Mexico
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	32.3	32.9	92.7	85.0
Puerto Rico
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	28.2	15.9	74.2	51.2
Brazil
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	8.1	12.3	26.6	38.3
Americas
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	1,048.1	1,039.3	3,199.5	3,147.1
France
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	68.8	73.0	212.7	202.1
Switzerland
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	53.8	59.1	156.3	161.3
Portugal
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	48.2	46.0	150.5	124.0
United Kingdom
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	28.1	23.3	85.6	64.3
Russia
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	24.0	22.5	75.7	69.3
Italy
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	18.3	15.9	58.1	45.3
Germany
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	13.8	15.5	45.0	43.3
Ireland
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	11.3	8.3	34.3	23.4
Norway
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	8.8	8.9	26.4	24.9
Other
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	13.0	12.1	38.2	33.5
EMEA
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	288.1	284.6	882.8	791.4
Asia Pacific
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	$ 6.2	$ 4.9	$ 16.9	$ 13.6