MARKET RISKS AND CONCENTRATIONS (Details) $ in Millions	12 Months Ended
	Dec. 26, 2021 USD ($) bird employee	Dec. 27, 2020 USD ($)
Concentration Risk [Line Items]
Number of employees | bird	59,400
Period over which there have been no labor-related work stoppages	10 years
U.S.
Concentration Risk [Line Items]
Number of employees | employee	59,400
Mexico
Concentration Risk [Line Items]
Aggregate carrying amount of net assets	$ 1,100.0	$ 922.5
U.K. and Europe
Concentration Risk [Line Items]
Aggregate carrying amount of net assets	$ 3,200.0	$ 2,300.0
Net sales | Customer Concentration Risk | Largest single customer
Concentration Risk [Line Items]
Concentration risk, percentage	7.10%
Workforce Subject to Collective Bargaining Arrangements | Unionized Employees Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	45.40%