v3.26.1
Fair Value of Financial Instruments - Schedule of Fair Value Hierarchy (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value $ 12,269.4 [1],[2] $ 13,008.6 [3],[4]
Level 1—Price quotations in active markets    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value 0.0 22.0
Level 2—Significant other observable inputs    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value 13.0 14.0
Level 3—Significant unobservable inputs    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value 10,549.0 11,005.0
Investments measured at net asset value    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value $ 1,707.0 $ 1,968.0
[1] Security may be an obligation of one or more entities affiliated with the named company.
[2] See Note 8 for additional information regarding the fair value of the Company’s financial instruments.
[3] Security may be an obligation of one or more entities affiliated with the named company.
[4] See Note 8 for additional information regarding the fair value of the Company’s financial instruments.