PENSION AND OTHER POSTRETIREMENT BENEFITS - Schedule of Plan Asset Allocations (Details) - Pension Benefits	Dec. 29, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Total plan assets, actual allocation, percent	100.00%	100.00%
Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Total plan assets, actual allocation, percent	21.00%	2.00%
Union plan | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total plan assets, actual allocation, percent	0.00%	2.00%
Union plan | Fixed income funds
Defined Benefit Plan Disclosure [Line Items]
Total plan assets, actual allocation, percent	0.00%	2.00%
GK Pension Plan | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total plan assets, actual allocation, percent	0.00%	25.00%
GK Pension Plan | Fixed income funds
Defined Benefit Plan Disclosure [Line Items]
Total plan assets, actual allocation, percent	3.00%	15.00%
GK Pension Plan | Real estate
Defined Benefit Plan Disclosure [Line Items]
Total plan assets, actual allocation, percent	0.00%	2.00%
U.K. Plans | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total plan assets, actual allocation, percent	30.00%	29.00%
U.K. Plans | Fixed income funds
Defined Benefit Plan Disclosure [Line Items]
Total plan assets, actual allocation, percent	24.00%	1.00%
U.K. Plans | Liability driven investments
Defined Benefit Plan Disclosure [Line Items]
Total plan assets, actual allocation, percent	10.00%	15.00%
U.K. Plans | Real estate
Defined Benefit Plan Disclosure [Line Items]
Total plan assets, actual allocation, percent	12.00%	7.00%