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Related Party Transactions - Summary of Revenues and Expenses Related to Agreements (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Related Party Transactions        
Revenues $ 275.0 $ 291.8 $ 840.2 $ 881.8
Operating expenses $ 338.7 212.2 752.5 635.4
DNB | Related Party        
Related Party Transactions        
Revenues   1.7 3.5 5.7
Operating expenses   $ 1.2 $ 2.4 $ 3.5