v3.26.3
Debt - Narrative (Details) - USD ($)
shares in Thousands, $ in Millions
1 Months Ended
Aug. 31, 2025
Sep. 30, 2026
Jan. 30, 2026
Dec. 31, 2025
Debt Instrument [Line Items]        
Maximum Borrowing Capacity     $ 500  
Line Of Credit Facility Accordion Feature Increase Limit     $ 250  
Convertible Senior Notes Due 2026 | Convertible Debt | Common Class C        
Debt Instrument [Line Items]        
Capped call transactions, portion unwound, shares received (in shares) 3,100      
Capped Call Transactions, Portion Unwound, Cash Received [Abstract] $ 38      
JPMorgan Chase Bank, UBS AG, Bank of Montreal, Bank of Nova Scotia | Mortgages Segment        
Debt Instrument [Line Items]        
Short-term debt   $ 414   $ 381