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Leases - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Sep. 30, 2021
Feb. 28, 2019
Lessee Lease Description [Line Items]        
Lease expiration date 2037      
Payments to be received as sublease income       $ 9,100
Operating right-of-use lease assets $ 150,261   $ 152,337  
Operating lease, liability 206,032      
Lease Cost        
Operating cash flows from operating leases 15,865 $ 14,060    
Facility Closures and Related Costs        
Lessee Lease Description [Line Items]        
Operating lease liability, net. restructured facilities 2,700   $ 3,600  
Operating right-of-use lease assets 900      
Operating lease, liability 3,600      
Lease Cost        
Operating cash flows from operating leases 700 $ 3,800    
Facility Closures and Related Costs | Operating Lease Short Term Lease Obligation        
Lessee Lease Description [Line Items]        
Operating lease, liability 3,000      
Facility Closures and Related Costs | Operating Lease Long Term Lease Obligation        
Lessee Lease Description [Line Items]        
Operating lease, liability 600      
Sublease Income Committed        
Lessee Lease Description [Line Items]        
Sublease income assumed $ 900