PENSION AND OTHER POSTRETIREMENT BENEFITS - Schedule of Plan Asset Allocations (Details) - Pension Benefits	Dec. 25, 2022	Dec. 26, 2021
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	6.00%	2.00%
Union plan | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total plan assets, actual allocation, percent	2.00%	2.00%
Union plan | Fixed income funds
Defined Benefit Plan Disclosure [Line Items]
Total plan assets, actual allocation, percent	2.00%	2.00%
GK Pension Plan | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total plan assets, actual allocation, percent	23.00%	19.00%
GK Pension Plan | Fixed income funds
Defined Benefit Plan Disclosure [Line Items]
Total plan assets, actual allocation, percent	15.00%	12.00%
GK Pension Plan | Real estate
Defined Benefit Plan Disclosure [Line Items]
Total plan assets, actual allocation, percent	3.00%	1.00%
U.K. Plans | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total plan assets, actual allocation, percent	27.00%	37.00%
U.K. Plans | Fixed income funds
Defined Benefit Plan Disclosure [Line Items]
Total plan assets, actual allocation, percent	1.00%	19.00%
U.K. Plans | Liability driven investments
Defined Benefit Plan Disclosure [Line Items]
Total plan assets, actual allocation, percent	13.00%	0.00%
U.K. Plans | Real estate
Defined Benefit Plan Disclosure [Line Items]
Total plan assets, actual allocation, percent	8.00%	6.00%