Leases (Supplement Cash Flow Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 03, 2025	Dec. 29, 2023	Dec. 30, 2022
Leases [Abstract]
Operating cash flows from operating leases	$ 30.3	$ 31.0	$ 35.0
Right-of-use assets obtained in exchange for Operating lease liabilities:	44.1	47.0	$ 26.3
Operating lease right-of-use assets	123.5	124.0
Other current liabilities	21.2	29.1
Operating lease liabilities	123.4	121.9
Total operating lease liabilities	$ 144.6	$ 151.0
Weighted-average discount rate	4.58%	4.27%
Weighted-average remaining lease term	7 years	7 years
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other current liabilities	Other current liabilities