Reporting Segment And Geographic Information (Schedule Of Revenue, Operating Income And Identifiable Assets By Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 03, 2025	Dec. 29, 2023	Dec. 30, 2022
Segment Reporting Information [Line Items]
Total revenue	$ 3,683.3	$ 3,798.7	$ 3,676.3
Operating expense	1,935.6	1,884.0	1,594.7
Operating income	460.7	448.8	510.9
AECO
Segment Reporting Information [Line Items]
Total revenue	1,358.6	1,110.5	941.7
Cost of sales	220.4	213.3	201.2
Operating expense	674.6	568.2	481.4
Operating income	$ 463.6	$ 329.0	$ 259.1
Segment operating income (as percent)	34.10%	29.60%	27.50%
Field Systems
Segment Reporting Information [Line Items]
Total revenue	$ 1,535.9	$ 1,967.9	$ 2,151.3
Cost of sales	666.3	843.4	997.4
Operating expense	427.6	521.0	498.0
Operating income	$ 442.0	$ 603.5	$ 655.9
Segment operating income (as percent)	28.80%	30.70%	30.50%
T&L
Segment Reporting Information [Line Items]
Total revenue	$ 788.8	$ 720.3	$ 583.3
Cost of sales	280.2	278.8	268.2
Operating expense	353.5	323.3	265.3
Operating income	$ 155.1	$ 118.2	$ 49.8
Segment operating income (as percent)	19.70%	16.40%	8.50%