Employee Retirement Plans Summary classes of security by percentage (Details)	Jan. 03, 2026	Dec. 28, 2024
USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	100.00%
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	(100.00%)	(100.00%)
Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	100.00%
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	(100.00%)	(100.00%)
Equity Securities [Member] | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	48.00%
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	(52.50%)	(51.00%)
Equity Securities [Member] | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	16.80%
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	(13.20%)	(7.30%)
Fixed Income Securities [Member] | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	40.00%
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	(32.70%)	(38.80%)
Fixed Income Securities [Member] | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	75.60%
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	(86.60%)	(94.60%)
Money Market Instruments [Member] | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	4.00%
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	(5.80%)	(2.20%)
Money Market Instruments [Member] | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	5.60%
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	(14.70%)	(17.80%)
Other (real estate & commodities) [Member] | USPlans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	8.00%
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	(9.00%)	(8.00%)
Other (real estate & commodities) [Member] | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	2.00%
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	(8.90%)	(9.90%)
Cash and Cash Equivalents | Non US Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	0.00%
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	(6.00%)	(6.00%)