XML 54 R44.htm IDEA: XBRL DOCUMENT v3.20.2
Debt (Details) - USD ($)
9 Months Ended 14 Months Ended
Mar. 16, 2020
Sep. 30, 2020
Sep. 30, 2019
Jun. 30, 2021
Debt Instrument [Line Items]        
Proceeds from borrowings under long-term debt obligations   $ 726,000,000.0 $ 1,236,000,000.0  
Line of Credit | Revolving Credit Facility        
Debt Instrument [Line Items]        
Debt issuance costs $ 2,000,000.0      
Borrowings $ 675,400,000      
Proceeds from borrowings under long-term debt obligations   $ 622,000,000.0    
Line of Credit | Revolving Credit Facility | Subsequent Event        
Debt Instrument [Line Items]        
Minimum liquidity financial covenant       $ 150,000,000.0
Line of Credit | Revolving Credit Facility | Minimum        
Debt Instrument [Line Items]        
Commitment fee percentage 0.35%      
Line of Credit | Revolving Credit Facility | Minimum | London Interbank Offered Rate (LIBOR)        
Debt Instrument [Line Items]        
Basis spread 2.25%      
Line of Credit | Revolving Credit Facility | Maximum        
Debt Instrument [Line Items]        
Commitment fee percentage 0.30%      
Line of Credit | Revolving Credit Facility | Maximum | London Interbank Offered Rate (LIBOR)        
Debt Instrument [Line Items]        
Basis spread 1.75%