Business Combinations, Goodwill and Acquired Intangible Assets (Details) - USD ($) $ in Millions					1 Months Ended	6 Months Ended
	Jan. 05, 2020	Aug. 30, 2019	Aug. 01, 2019	Feb. 05, 2019	Jan. 31, 2020	Jun. 28, 2020	Jun. 30, 2019	Dec. 29, 2019
Business Acquisition [Line Items]
Payments to acquire businesses, net of cash acquired						$ 29.0	$ 222.5
Goodwill						2,061.3		$ 2,050.5
Acquired intangibles, net						$ 409.2		$ 430.8
Oak Gate Technology
Business Acquisition [Line Items]
Payments to acquire businesses, net of cash acquired	$ 28.5
Roper Technologies, Inc
Business Acquisition [Line Items]
Payments to acquire businesses, net of cash acquired				$ 224.8
3M Gas and Flame Detection Business
Business Acquisition [Line Items]
Payments to acquire businesses, net of cash acquired			$ 233.5
Micralyne Inc
Business Acquisition [Line Items]
Payments to acquire businesses, net of cash acquired		$ 26.2
Purchase price adjustment					$ 0.5