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Commitments (Details)
$ in Millions
Mar. 31, 2020
USD ($)
Other Commitments [Line Items]  
Letters of Credit Outstanding, Amount $ 73.0
Pledged Assets, Not Separately Reported, Other 3.9
Credit Facility [Domain]  
Other Commitments [Line Items]  
Letters of Credit Outstanding, Amount 49.7
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 37.5
Indemnification Agreement [Member]  
Other Commitments [Line Items]  
Guarantor Obligations, Maximum Exposure, Undiscounted $ 509.0