v3.26.1
Financial Instruments - Schedule of Balances of Cash Equivalents and Investments (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Cash equivalents:    
Amortized Cost $ 678 $ 768
Short-term investments:    
Amortized Cost 105  
Estimated Fair Market Value 105  
Mortgage origination-related:    
Mortgage loans held for sale 361 386
Restricted cash 5 5
Total assets measured at fair value on a recurring basis, Amortized cost 788 1,298
Total assets measured at fair value on a recurring basis, Estimated fair market value 1,166 1,694
Liabilities    
Contingent consideration - accrued expenses and other current liabilities 32 33
Contingent consideration - other long-term liabilities 0 31
Liabilities measured at fair value 32 65
U.S. government treasury securities    
Short-term investments:    
Amortized Cost 37 369
Estimated Fair Market Value 37 370
Corporate bonds    
Short-term investments:    
Amortized Cost 68 149
Estimated Fair Market Value 68 150
U.S. government agency securities    
Short-term investments:    
Amortized Cost 0 7
Estimated Fair Market Value 0 7
IRLCs - prepaid expenses and other current assets    
Mortgage origination-related:    
IRLCs - prepaid expenses and other current assets 12 8
Forward contracts - accrued expenses and other current liabilities    
Mortgage origination-related:    
IRLCs - prepaid expenses and other current assets 5 0
Liabilities    
Forward contracts - accrued expenses and other current liabilities 0 1
Cash    
Cash equivalents:    
Amortized Cost 23 19
Estimated Fair Market Value 23 19
Money market funds    
Cash equivalents:    
Amortized Cost 655 659
Estimated Fair Market Value 655 659
U.S. government treasury securities    
Cash equivalents:    
Amortized Cost 0 90
Estimated Fair Market Value $ 0 $ 90