v3.26.1
Fair Value Accounting - Assets and liabilities measured at fair value on recurring basis (Details) - Fair Value, Measurements, Recurring - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Assets:    
Cash equivalents $ 50.0 $ 77.0
Contingent consideration [1]   2.2
Total assets 50.0 79.2
Level 1    
Assets:    
Cash equivalents 50.0 77.0
Contingent consideration [1]   0.0
Total assets 50.0 77.0
Level 2    
Assets:    
Cash equivalents 0.0 0.0
Contingent consideration [1]   0.0
Total assets 0.0 0.0
Level 3    
Assets:    
Cash equivalents 0.0 0.0
Contingent consideration [1]   2.2
Total assets $ 0.0 $ 2.2
[1] (1) Included in other assets on the Consolidated Balance Sheets