PENSION AND OTHER POSTRETIREMENT BENEFITS - Schedule of Plan Asset Allocations (Details) - Pension Benefits	Dec. 26, 2021	Dec. 27, 2020
Defined Benefit Plan Disclosure [Line Items]
Total assets	100.00%	100.00%
Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Total assets	2.00%	1.00%
Union plan | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total assets	2.00%	2.00%
Union plan | Fixed income funds
Defined Benefit Plan Disclosure [Line Items]
Total assets	2.00%	2.00%
GK Pension Plan | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total assets	19.00%	20.00%
GK Pension Plan | Fixed income funds
Defined Benefit Plan Disclosure [Line Items]
Total assets	12.00%	13.00%
GK Pension Plan | Real estate
Defined Benefit Plan Disclosure [Line Items]
Total assets	1.00%	1.00%
U.K. Plans | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total assets	37.00%	35.00%
U.K. Plans | Fixed income funds
Defined Benefit Plan Disclosure [Line Items]
Total assets	19.00%	20.00%
U.K. Plans | Real estate
Defined Benefit Plan Disclosure [Line Items]
Total assets	6.00%	6.00%