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PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS - Narrative (Details) - UNITED STATES - Pension Plan - USD ($)
$ in Millions
3 Months Ended
Dec. 26, 2020
Sep. 26, 2020
Employee benefits    
Benefit obligation   $ 94
Plan assets   $ 93
Subsequent Event    
Employee benefits    
Employee contributions made by the company $ 1  
Non-cash settlement charge $ 10