Business Segments (Product Lines) (Details) - USD ($) $ in Millions	12 Months Ended
Jan. 02, 2022	Jan. 03, 2021	Dec. 29, 2019
Instrumentation:
Net sales	$ 4,614.3	$ 3,086.2	$ 3,163.6
Instrumentation
Instrumentation:
Net sales	1,166.9	1,094.5	1,105.1
Instrumentation \| Environmental Instrumentation
Instrumentation:
Net sales	446.3	411.3	391.4
Instrumentation \| Marine Instrumentation
Instrumentation:
Net sales	424.1	426.3	450.2
Instrumentation \| Test and Measurement Instrumentation
Instrumentation:
Net sales	$ 296.5	$ 256.9	$ 263.5

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details