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Fair Value Measurements Fair Value of Financial Instrument Assumptions (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2023
Sep. 18, 2023
Revolving Credit Facility [Member]    
Fair Value of Financial Instrument Assumptions [Line Items]    
Line of Credit Facility, Current Borrowing Capacity $ 650.0  
Line of Credit Facility, Maximum Borrowing Capacity $ 800.0  
Line of Credit Facility, Initiation Date Jul. 18, 2013  
Basis point spread on variable rate under Credit Facility 1.75%  
Warehousing Agreement - Fourth Amended and Restated    
Fair Value of Financial Instrument Assumptions [Line Items]    
Line of Credit Facility, Maximum Borrowing Capacity $ 200.0 $ 275.0
Line of Credit Facility, Initiation Date May 26, 2023  
Basis point spread on variable rate under Credit Facility 1.65%  
Repurchase Agreement-Fifth Amendment to Second Amendment and Restated    
Fair Value of Financial Instrument Assumptions [Line Items]    
Line of Credit Facility, Maximum Borrowing Capacity $ 90.0  
Line of Credit Facility, Initiation Date Oct. 30, 2017