v3.26.1
Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2026
Fair Value by Fair Value Hierarchy Level, Extensible Enumeration [Abstract]  
Financial instruments measured at fair value on a recurring basis The following table presents financial instruments measured at fair value on a recurring basis:
 March 31, 2026
(in millions)Level 1Level 2Level 3Total
Assets at Fair Value:
Marketable securities:
Corporate debt securities$6.9 $— $— $6.9 
Mutual funds116.0 — — 116.0 
Equity securities1.3 — — 1.3 
Total Marketable Securities124.2 — — 124.2 
Total Assets at Fair Value$124.2 $— $— $124.2 
Fair value of Debt Instruments
At March 31, 2026, the fair values were as follows:
(in millions)Fair ValueLevel
$500.0 million fixed rate notes due June 2028$496.1 Level 2
$750.0 million fixed rate notes due March 2030751.4 Level 2
$750.0 million fixed rate notes due March 2032679.9 Level 2
$750.0 million fixed rate notes due September 2043732.6 Level 2
$700.0 million fixed rate notes due June 2048571.8 Level 2