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Derivative Financial Instruments - Narrative (Details)
€ in Millions, £ in Millions, $ in Millions, $ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2020
USD ($)
instrument
Mar. 31, 2024
GBP (£)
Mar. 31, 2024
AUD ($)
Mar. 31, 2024
EUR (€)
Dec. 31, 2023
GBP (£)
Dec. 31, 2023
AUD ($)
Dec. 31, 2023
EUR (€)
Derivative [Line Items]                  
Number of instruments terminated | instrument     2            
Interest expense                  
Derivative [Line Items]                  
Loss to be reclassified in next twelve months   $ 13.5              
Foreign Exchange Forward                  
Derivative [Line Items]                  
Loss to be reclassified in next twelve months   $ 0.4              
Series D and Series E Notes | Senior Notes                  
Derivative [Line Items]                  
Amount of hedged loan       £ 78.0 $ 197.0 € 817.5 £ 78.0 $ 191.0 € 817.5
Australian Intercompany Loan | Intercompany Loan Payable | Foreign Exchange Forward                  
Derivative [Line Items]                  
Amount of hedged loan         $ 153.5     $ 153.5  
2020 Senior Unsecured Revolving Credit Facility | Credit Facility | Interest Rate Swap | Revolving Credit Facility                  
Derivative [Line Items]                  
Loss to be reclassified in next twelve months $ 0.5                
Twenty Twenty Senior Unsecured Revolving Credit Facilities | Credit Facility | Revolving Credit Facility                  
Derivative [Line Items]                  
Payments for settlement of hedge     $ 16.4            
Fee for termination of derivative instruments remaining in accumulated other comprehensive income     $ 8.7