Annual report pursuant to Section 13 and 15(d)

Financing Agreements - Narrative (Details)

v3.22.2.2
Financing Agreements - Narrative (Details)
12 Months Ended
Mar. 03, 2021
USD ($)
Jun. 16, 2020
USD ($)
Sep. 25, 2019
USD ($)
Dec. 15, 2014
USD ($)
Jul. 09, 2010
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Jun. 08, 2023
Sep. 30, 2022
EUR (€)
Jun. 21, 2022
USD ($)
Jun. 08, 2022
USD ($)
Sep. 30, 2021
EUR (€)
Sep. 15, 2020
Sep. 30, 2019
USD ($)
Maturities of long-term debt                              
2023           $ 0                  
2024           0                  
2025           500,000,000.0                  
2026           375,000,000.0                  
2027           $ 6,700,000                  
Debt Instrument [Line Items]                              
Debt Instrument, Covenant Terms, Maximum Ratio of Indebtedness to Earnings before Interest, Taxes, Depreciation, and Amortization           3.5                  
Debt Instrument, Covenant Terms, Minimum Ratio of Earnings before Interest, Taxes, Depreciation, and Amortization to Interest Expense           3.00                  
Amortization of deferred financing costs           $ 3,600,000 $ 7,200,000 $ 3,900,000              
Long-term Debt           1,222,100,000 1,212,900,000                
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents           237,600,000 450,900,000 $ 311,800,000             $ 399,400,000
$1,000.0 revolving credit facility (excluding outstanding letters of credit)                              
Debt Instrument [Line Items]                              
Letters of credit outstanding           19,000,000.0 $ 16,400,000                
Remaining borrowing capacity available under the credit facility           $ 1,174,300,000                  
Weighted average facility fee (as a percent)           0.15% 0.22%                
Long-term Debt           $ 6,700,000 $ 0                
Current borrowing capacity available under the facility           $ 901,300,000                  
$1,000.0 revolving credit facility (excluding outstanding letters of credit) | Minimum                              
Debt Instrument [Line Items]                              
Long-term Debt, Weighted Average Interest Rate, over Time           1.18%                  
$1,000.0 revolving credit facility (excluding outstanding letters of credit) | Maximum                              
Debt Instrument [Line Items]                              
Long-term Debt, Weighted Average Interest Rate, over Time           2.28%                  
$1,000.0 revolving credit facility (excluding outstanding letters of credit) | Base Rate | Minimum                              
Debt Instrument [Line Items]                              
Debt Instrument, Basis Spread on Variable Rate           0.00%                  
$1,000.0 revolving credit facility (excluding outstanding letters of credit) | Base Rate | Maximum                              
Debt Instrument [Line Items]                              
Debt Instrument, Basis Spread on Variable Rate           0.525%                  
$1,000.0 revolving credit facility (excluding outstanding letters of credit) | Other Borrowings | Minimum                              
Debt Instrument [Line Items]                              
Debt Instrument, Basis Spread on Variable Rate           0.90%                  
$1,000.0 revolving credit facility (excluding outstanding letters of credit) | Other Borrowings | Maximum                              
Debt Instrument [Line Items]                              
Debt Instrument, Basis Spread on Variable Rate           1.525%                  
$1,000.0 revolving credit facility (excluding outstanding letters of credit) | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Minimum                              
Debt Instrument [Line Items]                              
Debt Instrument, Basis Spread on Variable Rate           1.00%                  
$1,000.0 revolving credit facility (excluding outstanding letters of credit) | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Maximum                              
Debt Instrument [Line Items]                              
Debt Instrument, Basis Spread on Variable Rate           1.75%                  
$1,000.0 revolving credit facility (excluding outstanding letters of credit) | Alternate Bate Rate | Minimum                              
Debt Instrument [Line Items]                              
Debt Instrument, Basis Spread on Variable Rate           0.00%                  
$1,000.0 revolving credit facility (excluding outstanding letters of credit) | Alternate Bate Rate | Maximum                              
Debt Instrument [Line Items]                              
Debt Instrument, Basis Spread on Variable Rate           0.75%                  
Other Credit Arrangements                              
Debt Instrument [Line Items]                              
Maximum borrowing capacity           $ 373,600,000                  
Amount of credit facility utilized for providing bank guarantees           247,400,000                  
Senior Notes                              
Debt Instrument [Line Items]                              
Debt issued     $ 375,000,000.0                        
$150.0 senior unsecured notes                              
Debt Instrument [Line Items]                              
Debt issued         $ 150,000,000.0                    
Percentage of the principal amount at which the notes are redeemable due to a change of control         101.00%                    
$100.0 Series A Notes                              
Debt Instrument [Line Items]                              
Debt issued       $ 100,000,000.0                      
Stated interest rate       4.60%                      
Redemption price, percentage       100.00%                      
Unamortized debt issuance costs           100,000 200,000                
Long-term Debt           $ 99,900,000 99,800,000                
350 Million Senior Unsecured Notes                              
Debt Instrument [Line Items]                              
Debt issued $ 350,000,000.0                            
Stated interest rate 3.75%                            
Redemption price, percentage 101.00%                            
Deferred financing costs $ 3,800,000                            
350 Million Senior Unsecured Notes | Debt Instrument, Redemption, Period One                              
Debt Instrument [Line Items]                              
Redemption price, percentage 101.875%                            
350 Million Senior Unsecured Notes | Debt Instrument, Redemption, Period Two                              
Debt Instrument [Line Items]                              
Redemption price, percentage 101.25%                            
350 Million Senior Unsecured Notes | Debt Instrument, Redemption, Period Three                              
Debt Instrument [Line Items]                              
Redemption price, percentage 100.625%                            
350 Million Senior Unsecured Notes | Debt Instrument, Redemption, Period Four                              
Debt Instrument [Line Items]                              
Redemption price, percentage 100.00%                            
350 Million Senior Unsecured Notes | Debt Instrument, Redemption, Period Five                              
Debt Instrument [Line Items]                              
Redemption price, percentage 103.75%                            
Debt Instrument, Redemption Price, Option, Percentage of Principal Available to be Redeemed 40.00%                            
Term Loan A                              
Debt Instrument [Line Items]                              
Long-Term Debt, Weighted Average Ticking Fee Rate           0.15%                  
Syndicated Credit Facility | $1,000.0 revolving credit facility (excluding outstanding letters of credit)                              
Debt Instrument [Line Items]                              
Unamortized debt issuance costs           $ 1,100,000                  
Syndicated Credit Facility | Letter of Credit                              
Debt Instrument [Line Items]                              
Maximum borrowing capacity | €                   € 225,000,000     € 175,000,000    
Unamortized debt issuance costs             200,000       $ 1,000,000.0        
2020 Notes                              
Debt Instrument [Line Items]                              
Debt issued   $ 400,000,000.0       400.0                  
Stated interest rate   5.75%                          
Redemption price, percentage   101.00%                          
Amortization of deferred financing costs   $ 2,900,000                          
2020 Notes | Debt Instrument, Redemption, Period Two                              
Debt Instrument [Line Items]                              
Redemption price, percentage 101.438%                            
2020 Notes | Debt Instrument, Redemption, Period Three                              
Debt Instrument [Line Items]                              
Redemption price, percentage 100.00%                            
2020 Notes | Senior Notes                              
Debt Instrument [Line Items]                              
Unamortized debt issuance costs           2,900,000 4,200,000                
Long-term Debt           397,100,000 395,800,000                
2019 Notes | Senior Notes                              
Debt Instrument [Line Items]                              
Debt issued     $ 375,000,000.0                        
Stated interest rate     4.50%                     5.00%  
Notes issued at a discount     $ 0.6                        
Effective annual interest rate (as a percent)     4.53%                        
Debt Instrument, Interest Rate, Stated Percentage, Increase In Rate For Each Bond Rating Downgrade     0.25%                        
Unamortized debt issuance costs           2,500,000 3,100,000                
Long-term Debt     $ 374,400,000     $ 372,200,000 $ 371,500,000                
L/G Facility Agreement Amendment                              
Debt Instrument [Line Items]                              
Debt Instrument, Covenant Terms, Maximum Ratio of Indebtedness to Earnings before Interest, Taxes, Depreciation, and Amortization           4.00                  
Former Credit Agreement | Revolving Credit Facility                              
Debt Instrument [Line Items]                              
Maximum borrowing capacity                       $ 1,000,000,000      
Former Credit Agreement | $1,000.0 revolving credit facility (excluding outstanding letters of credit)                              
Debt Instrument [Line Items]                              
Unamortized debt issuance costs           $ 1,900,000                  
Fourth Amended And Restated Credit Agreement | Revolving Credit Facility                              
Debt Instrument [Line Items]                              
Line of Credit Facility, Accordion Feature, Increase Limit                       $ 600,000,000      
Fourth Amended And Restated Credit Agreement | $1,000.0 revolving credit facility (excluding outstanding letters of credit)                              
Debt Instrument [Line Items]                              
Unamortized debt issuance costs           $ 3,000,000.0                  
Fourth Amended And Restated Credit Agreement | $1,000.0 revolving credit facility (excluding outstanding letters of credit) | Secured Debt                              
Debt Instrument [Line Items]                              
Stated interest rate                       1.25%      
Debt Instrument, Delayed Draw, Amount                       $ 200,000,000.0      
Fourth Amended And Restated Credit Agreement | $1,000.0 revolving credit facility (excluding outstanding letters of credit) | Secured Debt | Forecast                              
Debt Instrument [Line Items]                              
Stated interest rate                 1.875%