v3.25.2
Fair Value Measurements (Assets and Liabilities Reconciliation) (Details)
$ in Millions
6 Months Ended
Jun. 30, 2025
USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Balance of net assets at January 1, 2025 $ 1,477.2
Losses included in net earnings  
Realized and unrealized losses on derivative instruments, net (49.2)
Realized and unrealized losses due to changes in fair values of certain investments, net (88.6)
Additions 60.5
Transfers out of Level 3 (173.8)
Foreign currency translation adjustments and other, net 141.6
Balance of net assets at March 31, 2024 $ 1,367.7
Fair Value, Net Derivative Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Realized and unrealized gains (losses) on derivative instruments, net (note 6)
Fair Value Recurring Basis Unobservable Input Reconciliation Net Derivative Asset Liability Gain Loss Statement Of Income Extensible List Not Disclosed Flag true
Investments  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Balance of net assets at January 1, 2025 $ 1,263.8
Losses included in net earnings  
Realized and unrealized losses on derivative instruments, net 0.0
Realized and unrealized losses due to changes in fair values of certain investments, net (88.6)
Additions 60.5
Transfers out of Level 3 0.0
Foreign currency translation adjustments and other, net 132.0
Balance of net assets at March 31, 2024 1,367.7
Equity-related derivative instruments  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Balance of net assets at January 1, 2025 213.4
Losses included in net earnings  
Realized and unrealized losses on derivative instruments, net (49.2)
Realized and unrealized losses due to changes in fair values of certain investments, net 0.0
Additions 0.0
Transfers out of Level 3 (173.8)
Foreign currency translation adjustments and other, net 9.6
Balance of net assets at March 31, 2024 0.0
Instruments accounted for under measurement alternative  
Losses included in net earnings  
Balance of net assets at March 31, 2024 $ 366.6