XML 45 R35.htm IDEA: XBRL DOCUMENT v3.25.3
Investments and Fair Value Measurements - Summary Of Assets And Liabilities That Are Measured At Fair Value On A Recurring And Nonrecurring Basis (Detail) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Marketable securities:    
Debt securities $ 4,779,769 $ 3,110,687
Total 5,798,389 4,959,335
Level 1    
Marketable securities:    
Total 1,013,786 1,843,822
Level 2    
Marketable securities:    
Total 4,784,603 3,115,513
Level 3    
Marketable securities:    
Total 0 0
U.S. Treasury securities    
Marketable securities:    
Debt securities 4,779,769 3,110,687
Cash and Cash Equivalents | Money market funds    
Cash and cash equivalents:    
Cash and cash equivalents 971,705 1,823,046
Cash and Cash Equivalents | Money market funds | Level 1    
Cash and cash equivalents:    
Cash and cash equivalents 971,705 1,823,046
Cash and Cash Equivalents | Money market funds | Level 2    
Cash and cash equivalents:    
Cash and cash equivalents 0 0
Cash and Cash Equivalents | Money market funds | Level 3    
Cash and cash equivalents:    
Cash and cash equivalents 0 0
Prepaid Expenses and Other Current Assets and Other Assets | Certificates of deposit    
Prepaid expenses and other current assets and other assets:    
Certificates of deposit 4,834 4,826
Prepaid Expenses and Other Current Assets and Other Assets | Certificates of deposit | Level 1    
Prepaid expenses and other current assets and other assets:    
Certificates of deposit 0 0
Prepaid Expenses and Other Current Assets and Other Assets | Certificates of deposit | Level 2    
Prepaid expenses and other current assets and other assets:    
Certificates of deposit 4,834 4,826
Prepaid Expenses and Other Current Assets and Other Assets | Certificates of deposit | Level 3    
Prepaid expenses and other current assets and other assets:    
Certificates of deposit 0 0
Marketable Securities | U.S. Treasury securities    
Marketable securities:    
Debt securities 4,779,769 3,110,687
Marketable Securities | U.S. Treasury securities | Level 1    
Marketable securities:    
Debt securities 0 0
Marketable Securities | U.S. Treasury securities | Level 2    
Marketable securities:    
Debt securities 4,779,769 3,110,687
Marketable Securities | U.S. Treasury securities | Level 3    
Marketable securities:    
Debt securities 0 0
Marketable Securities | Publicly-traded equity securities    
Marketable securities:    
Publicly-traded equity securities 42,081 20,776
Marketable Securities | Publicly-traded equity securities | Level 1    
Marketable securities:    
Publicly-traded equity securities 42,081 20,776
Marketable Securities | Publicly-traded equity securities | Level 2    
Marketable securities:    
Publicly-traded equity securities 0 0
Marketable Securities | Publicly-traded equity securities | Level 3    
Marketable securities:    
Publicly-traded equity securities $ 0 $ 0