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Debt (Narrative - Transactions) (Details) - USD ($)
$ in Millions
1 Months Ended
Apr. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
5.500% Senior Notes | Senior Notes      
Debt Instrument [Line Items]      
Coupon rate   5.50%  
Debt instrument, principal amount repurchased   $ 85.0 $ 18.7
Debt instrument, amount paid for repurchases   61.4 14.6
5.500% Senior Notes One | Senior Notes      
Debt Instrument [Line Items]      
Debt instrument, principal amount repurchased   $ 0.0 18.7
Debt instrument, amount paid for repurchases     $ 14.6
Term Loan A | Term Loans      
Debt Instrument [Line Items]      
Principal amount of debt redeemed $ 193.6