v3.26.3
BASIS OF PRESENTATION - Cash and Cash Equivalents (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Cash and Cash Equivalents.    
Cash and cash equivalents $ 751.9 $ 428.5
U.S. Markets    
Cash and Cash Equivalents.    
Cash and cash equivalents 606.3 302.6
International Markets    
Cash and Cash Equivalents.    
Cash and cash equivalents $ 145.6 $ 125.9