v3.26.3
Financial Instruments - Schedule of Balances of Cash Equivalents and Investments (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Cash equivalents:    
Amortized Cost $ 602 $ 768
Short-term investments:    
Amortized Cost 106  
Estimated Fair Market Value 105  
Mortgage origination-related:    
Mortgage loans held for sale 423 386
Restricted cash 6 5
Total assets measured at fair value on a recurring basis, Amortized cost 714 1,298
Total assets measured at fair value on a recurring basis, Estimated fair market value 1,153 1,694
Liabilities    
Contingent consideration - accrued expenses and other current liabilities 33 33
Contingent consideration - other long-term liabilities 0 31
Liabilities measured at fair value 36 65
Corporate bonds    
Short-term investments:    
Amortized Cost 69 149
Estimated Fair Market Value 69 150
U.S. government treasury securities    
Short-term investments:    
Amortized Cost 36 369
Estimated Fair Market Value 35 370
Commercial paper    
Short-term investments:    
Amortized Cost 1 0
Estimated Fair Market Value 1 0
U.S. government agency securities    
Short-term investments:    
Amortized Cost 0 7
Estimated Fair Market Value 0 7
Forward contracts - prepaid expenses and other current assets    
Mortgage origination-related:    
Derivative Asset 11 0
Liabilities    
Derivative Liability 0 1
IRLCs - prepaid expenses and other current assets    
Mortgage origination-related:    
Derivative Asset 6 8
Liabilities    
Derivative Liability 3 0
Cash    
Cash equivalents:    
Amortized Cost 44 19
Estimated Fair Market Value 44 19
Money market funds    
Cash equivalents:    
Amortized Cost 558 659
Estimated Fair Market Value 558 659
U.S. government treasury securities    
Cash equivalents:    
Amortized Cost 0 90
Estimated Fair Market Value $ 0 $ 90