v3.26.3
Investments (Tables)
 9 Months Ended
Sep. 30, 2026
Investments, Debt and Equity Securities [Abstract]  
Schedule of Marketable Securities
The following table presents the remaining maturities and values of our marketable securities as of the dates shown.
September 30, 2026December 31, 2025
(in millions, except maturities in months)Remaining
Maturities		Amortized CostFair ValueAmortized CostFair Value
U.S. treasury and government agencies1 to 53$17.0 $16.1 $18.0 $17.1 
Corporate debt securities4 to 798.2 8.0 11.2 11.1 
State and municipal bonds13 to 14510.3 9.7 13.7 13.6 
Total marketable securities$35.5 $33.8 $42.9 $41.8 
Equity Investments without Readily Determinable Fair Values
The following table summarizes the activity related to these equity investments during the periods presented.
Three Months Ended
September 30,		Nine Months Ended
September 30,
(in millions)2026202520262025
Investment in equity securities$— $— $— $13.4 
Upward adjustments (1)
— — — 4.4 
Downward adjustments— — — 4.9 
(1)     Our updated investment value in 2025 related to Platform Science, Inc. and was determined using a combination of the discounted cash flow and guideline public company methods.