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Financial Instruments − Fair Value and Concentrations of Credit Risk - Contingent Consideration Liability are Measured at Fair Value on a Recurring Basis Using Unobservable Inputs (Level 3) (Details) - Obligations - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Contingent consideration, beginning balance $ 123.4 $ 179.5 $ 186.2 $ 206.4
Payments of contingent consideration 0.0 0.0 (64.5) (28.7)
Change in fair value of contingent consideration 1.7 1.2 3.4 3.0
Contingent consideration, ending balance $ 125.1 $ 180.7 125.1 $ 180.7
Payments of deferred and contingent consideration     $ 27.2