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Subsequent Events (Narrative) (Details) - Revolving Credit Facility - USD ($)
$ in Millions
Nov. 04, 2021
Sep. 30, 2021
Subsequent Event [Line Items]    
Revolving credit facility, maximum borrowing capacity   $ 1,500.0
2023 Revolving Credit Facility    
Subsequent Event [Line Items]    
Revolving credit facility, maximum borrowing capacity   250.0
2026 Revolving Credit Facility    
Subsequent Event [Line Items]    
Revolving credit facility, maximum borrowing capacity   $ 1,250.0
Subsequent Event | 2023 Revolving Credit Facility    
Subsequent Event [Line Items]    
Amount of revolving credit facility commitments terminated $ 250.0  
Subsequent Event | 2026 Revolving Credit Facility    
Subsequent Event [Line Items]    
Revolving credit facility, maximum borrowing capacity $ 1,250.0