Leases - Schedule of Lease Term and Discount Rate (Details)	12 Months Ended
	Jan. 03, 2026	Dec. 28, 2024
Weighted average remaining lease term (months)
Operating leases, weighted average remaining lease term (months)	70 months	71 months
Finance leases, weighted average remaining lease term (months)	37 months	48 months
Weighted average discount rate
Operating leases, weighted average discount rate (percent)	5.40%	5.10%
Finance leases, weighted average discount rate (percent)	10.20%	10.40%
Stores, laboratories, distribution centers, offices | Minimum
Weighted average discount rate
Lease terms (in years)	5 years
Stores, laboratories, distribution centers, offices | Maximum
Weighted average discount rate
Lease terms (in years)	10 years