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Commitments (Details)
$ in Millions
Sep. 30, 2021
USD ($)
Other Commitments [Line Items]  
Letters of credit outstanding, amount $ 85.3
Collateralized cash deposits 3.7
Credit Facility [Domain]  
Other Commitments [Line Items]  
Letters of credit outstanding, amount 57.9
Guarantee Type, Other [Member]  
Other Commitments [Line Items]  
Guarantor obligations, maximum exposure, undiscounted 11.4
Performance Guarantee [Member]  
Other Commitments [Line Items]  
Guarantor obligations, maximum exposure, undiscounted 39.4
Indemnification Agreement [Member]  
Other Commitments [Line Items]  
Guarantor obligations, maximum exposure, undiscounted $ 719.0