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INVESTMENTS IN ASSOCIATED COMPANIES - Narrative (Details) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 29, 2024
Sep. 24, 2023
Sep. 25, 2022
Schedule of Equity Method Investments [Line Items]      
Equity method investments $ 27,941 $ 27,819  
Goodwill 328,040 329,504 $ 329,504
Editorial service costs 301,950 323,067 344,905
TNI Partners      
Schedule of Equity Method Investments [Line Items]      
Distributions from equity method investments $ 3,200 3,600 3,800
Equity method investments, ownership percentage 50.00%    
Equity method investments $ 15,100 15,100  
Goodwill 12,400    
Other intangible assets 2,300    
TNI Partners | Editorial Services      
Schedule of Equity Method Investments [Line Items]      
Editorial service costs 3,900 4,400 5,200
MNI      
Schedule of Equity Method Investments [Line Items]      
Distributions from equity method investments $ 1,200 2,200 1,300
Equity method investments, ownership percentage 50.00%    
Equity method investments $ 12,800 12,800  
Editorial service fees $ 5,500 $ 5,400 $ 5,600