v3.26.1
Commitments and Contingencies and Derivative Financial Instruments (Details)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Feb. 13, 2023
USD ($)
Mar. 27, 2026
USD ($)
instrument
Mar. 27, 2026
USD ($)
instrument
Sep. 26, 2025
USD ($)
instrument
Oct. 02, 2020
Mar. 12, 2026
USD ($)
Jan. 05, 2026
USD ($)
Sep. 30, 2022
USD ($)
instrument
Letter of Credit | Total Issued Letters of Credit                
Loss Contingencies [Line Items]                
Long-term line of credit, noncurrent   $ 253.4 $ 253.4 $ 217.0        
Letter of Credit | Revolving Credit Facility                
Loss Contingencies [Line Items]                
Long-term line of credit, noncurrent   0.3 0.3          
Letter of Credit | Committed and Uncommitted Letter-of-Credit Facilities                
Loss Contingencies [Line Items]                
Long-term line of credit, noncurrent   253.1 253.1          
Surety Bond                
Loss Contingencies [Line Items]                
Guarantor obligations, carrying value   3,000.0 3,000.0 2,800.0        
Treasury Lock                
Loss Contingencies [Line Items]                
Number of instruments held | instrument               2
Derivative notional amount               $ 500.0
Gain (loss) on derivatives, before taxes $ 37.4              
Unrealized gain (loss) on derivatives included in accumulated other comprehensive income (loss)   $ 19.5 $ 19.5 $ 20.9        
Treasury Lock | Fixed Rate Date                
Loss Contingencies [Line Items]                
Derivative fixed interest rate (as a percent) 5.90%              
Aggregate principal amount $ 500.0              
Interest Rate Swap                
Loss Contingencies [Line Items]                
Number of instruments held | instrument   1 1 1        
Derivative notional amount   $ 200.0 $ 200.0 $ 200.0        
Unrealized gain (loss) on derivatives included in accumulated other comprehensive income (loss)   15.2 $ 15.2 $ 15.6        
Term of derivative contract (in years/months)     10 years 10 years        
Derivative assets (liabilities), at fair value   20.0 $ 20.0 $ 20.5        
Interest Rate Swap | Minimum                
Loss Contingencies [Line Items]                
Term of derivative contract (in years/months)         5 years      
Interest Rate Swap | Maximum                
Loss Contingencies [Line Items]                
Term of derivative contract (in years/months)         10 years      
Foreign Exchange Forward                
Loss Contingencies [Line Items]                
Derivative notional amount   1,890.0 1,890.0 491.9   $ 60.1 $ 1,310.0  
Gain (loss) on derivatives, before taxes   (20.5) (20.5)          
Derivative assets (liabilities), at fair value   2.8 2.8 (0.3)        
Foreign Exchange Forward | Current Assets                
Loss Contingencies [Line Items]                
Derivative assets (liabilities), at fair value   4.8 4.8 2.0        
Foreign Exchange Forward | Current Liabilities                
Loss Contingencies [Line Items]                
Derivative assets (liabilities), at fair value   $ (2.0) $ (2.0) $ (2.3)        
Foreign Exchange Forward | Minimum                
Loss Contingencies [Line Items]                
Term of derivative contract (in years/months)     1 month          
Foreign Exchange Forward | Maximum                
Loss Contingencies [Line Items]                
Term of derivative contract (in years/months)     3 months