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Investments In Associated Companies - Narrative (Details) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 28, 2025
Sep. 29, 2024
Sep. 24, 2023
Schedule of Equity Method Investments [Line Items]      
Equity method investments $ 27,070 $ 27,941  
Goodwill 323,858 328,040 $ 329,504
Editorial service costs 294,642 301,950 323,067
TNI Partners      
Schedule of Equity Method Investments [Line Items]      
Distributions from equity method investments 3,500 3,200 3,600
Equity method investments 14,700 15,100  
Goodwill 12,400    
Other intangible assets 2,300    
TNI Partners | Editorial Services      
Schedule of Equity Method Investments [Line Items]      
Editorial service costs 3,700 3,900 4,400
MNI      
Schedule of Equity Method Investments [Line Items]      
Distributions from equity method investments 1,700 1,200 2,200
Equity method investments 12,500 12,800  
Editorial service fees $ 5,300 $ 5,500 $ 5,400