v3.26.1
Borrowings - Schedule of Long-term Debt (Details) - USD ($)
$ in Thousands
6 Months Ended
Mar. 27, 2026
Sep. 26, 2025
Aug. 18, 2023
Feb. 16, 2023
Debt Instrument [Line Items]        
Long-term debt $ 4,084,220 $ 2,236,456    
Less: Deferred Financing Fees (20,780) (8,805)    
2026 Term Loan Facility - Three-year        
Debt Instrument [Line Items]        
Long-term debt 700,000 0    
2026 Term Loan Facility - Five-year        
Debt Instrument [Line Items]        
Long-term debt 500,000 0    
2025 Term Loan Facility - USD Portion        
Debt Instrument [Line Items]        
Long-term debt 0 200,000    
2025 Term Loan Facility - GBP Portion        
Debt Instrument [Line Items]        
Long-term debt 0 550,261    
5.9% Bonds, due 2033 | Senior Notes        
Debt Instrument [Line Items]        
Long-term debt $ 500,000 500,000    
Interest rate (as a percent) 5.90%     5.90%
5.9% Bonds, due 2033 | Senior Notes | First Step Up Date        
Debt Instrument [Line Items]        
Interest rate (as a percent) 5.90%      
Interest rate, increase (decrease) over period (as a percent) 0.125%      
6.35% Bonds, due 2028 | Senior Notes        
Debt Instrument [Line Items]        
Long-term debt $ 600,000 600,000    
Interest rate (as a percent) 6.35%   6.35%  
5.375% Bonds, due 2036 | Senior Notes        
Debt Instrument [Line Items]        
Long-term debt $ 500,000 0    
Interest rate (as a percent) 5.375%      
4.75% Bonds, due 2031 | Senior Notes        
Debt Instrument [Line Items]        
Long-term debt $ 800,000 0    
Interest rate (as a percent) 4.75%      
JSI Revolving Credit Facility        
Debt Instrument [Line Items]        
Long-term debt $ 505,000 0    
JSI Revolving Credit Facility | Secured Overnight Financing Rate (SOFR)        
Debt Instrument [Line Items]        
Effective interest rate (as a percent) 4.90%      
JSI Revolving Credit Facility | Secured Overnight Financing Rate (SOFR) | Minimum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate (as a percent) 0.875%      
JSI Revolving Credit Facility | Secured Overnight Financing Rate (SOFR) | Maximum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate (as a percent) 1.625%      
JSI Revolving Credit Facility | Base Rate | Minimum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate (as a percent) 0.00%      
JSI Revolving Credit Facility | Base Rate | Maximum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate (as a percent) 0.625%      
JSI Revolving Credit Facility | 2026 Term Loan Facility - Three-year | Secured Overnight Financing Rate (SOFR)        
Debt Instrument [Line Items]        
Effective interest rate (as a percent) 4.80%      
JSI Revolving Credit Facility | 2026 Term Loan Facility - Five-year | Secured Overnight Financing Rate (SOFR)        
Debt Instrument [Line Items]        
Effective interest rate (as a percent) 4.93%      
Revolving Credit Facility        
Debt Instrument [Line Items]        
Long-term debt $ 0 $ 395,000    
Revolving Credit Facility | Secured Overnight Financing Rate (SOFR) | Minimum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate (as a percent) 0.975%      
Revolving Credit Facility | Secured Overnight Financing Rate (SOFR) | Maximum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate (as a percent) 1.725%      
Revolving Credit Facility | Base Rate | Minimum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate (as a percent) 0.00%      
Revolving Credit Facility | Base Rate | Maximum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate (as a percent) 0.625%      
Revolving Credit Facility | London Interbank Offered Rate (LIBOR)        
Debt Instrument [Line Items]        
Effective interest rate (as a percent)   5.37%    
Revolving Credit Facility | Sterling Overnight Interbank Average Rate (SONIA) | Minimum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate (as a percent) 0.908%      
Revolving Credit Facility | Sterling Overnight Interbank Average Rate (SONIA) | Maximum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate (as a percent) 1.658%      
Revolving Credit Facility | 2026 Term Loan Facility - Three-year | Secured Overnight Financing Rate (SOFR) | Minimum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate (as a percent) 0.75%      
Revolving Credit Facility | 2026 Term Loan Facility - Three-year | Secured Overnight Financing Rate (SOFR) | Maximum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate (as a percent) 1.50%      
Revolving Credit Facility | 2026 Term Loan Facility - Three-year | Base Rate | Minimum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate (as a percent) 0.00%      
Revolving Credit Facility | 2026 Term Loan Facility - Three-year | Base Rate | Maximum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate (as a percent) 0.50%      
Revolving Credit Facility | 2026 Term Loan Facility - Five-year | Secured Overnight Financing Rate (SOFR) | Minimum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate (as a percent) 0.875%      
Revolving Credit Facility | 2026 Term Loan Facility - Five-year | Secured Overnight Financing Rate (SOFR) | Maximum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate (as a percent) 1.625%      
Revolving Credit Facility | 2026 Term Loan Facility - Five-year | Base Rate | Minimum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate (as a percent) 0.00%      
Revolving Credit Facility | 2026 Term Loan Facility - Five-year | Base Rate | Maximum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate (as a percent) 0.625%      
Revolving Credit Facility | 2025 Term Loan Facility - USD Portion        
Debt Instrument [Line Items]        
Effective interest rate (as a percent)   5.42%    
Revolving Credit Facility | 2025 Term Loan Facility - GBP Portion        
Debt Instrument [Line Items]        
Effective interest rate (as a percent)   4.97%    
Revolving Credit Facility | 2025 Term Loan Facility | Secured Overnight Financing Rate (SOFR) | Minimum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate (as a percent) 0.975%      
Revolving Credit Facility | 2025 Term Loan Facility | Secured Overnight Financing Rate (SOFR) | Maximum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate (as a percent) 1.60%      
Revolving Credit Facility | 2025 Term Loan Facility | Base Rate | Minimum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate (as a percent) 0.00%      
Revolving Credit Facility | 2025 Term Loan Facility | Base Rate | Maximum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate (as a percent) 0.50%