v3.26.3
Cash, Cash Equivalents, Restricted Cash And Investments - Summary of Unrealized Gains and Losses and Estimated Fair Value of Cash Equivalents and Investments (Detail) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Cash and Cash Equivalents [Line Items]    
Amortized Cost $ 1,685,717 $ 3,341,783
Gross Unrealized Gains 43 2,334
Gross Unrealized Losses (15,812) (435)
Estimated Fair Value 1,669,948 3,343,682
Cash and money market funds [Member]    
Cash and Cash Equivalents [Line Items]    
Amortized Cost 216,474 538,195
Gross Unrealized Gains 0 0
Gross Unrealized Losses 0 0
Estimated Fair Value 216,474 538,195
Certificates of deposit [Member]    
Cash and Cash Equivalents [Line Items]    
Amortized Cost 534 0
Gross Unrealized Gains 0 0
Gross Unrealized Losses 0 0
Estimated Fair Value 534 0
Corporate Notes And Bonds [Member]    
Cash and Cash Equivalents [Line Items]    
Amortized Cost 0 1,999
Gross Unrealized Gains 0 0
Gross Unrealized Losses 0 0
Estimated Fair Value 0 1,999
U.S. Government Corporations and Agencies Securities [Member]    
Cash and Cash Equivalents [Line Items]    
Amortized Cost 1,468,709 2,801,589
Gross Unrealized Gains 43 2,334
Gross Unrealized Losses (15,812) (435)
Estimated Fair Value $ 1,452,940 $ 2,803,488