v3.26.3
Fair Value Measurements - Schedule of Fair Value of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale debt securities $ 48 $ 47
Equity securities 20 19
Investments in unconsolidated subsidiaries 19 19
Warehouse receivables 945 1,630
Derivative assets 95 63
Total assets at fair value 1,127 1,778
Contingent consideration 24 65
Derivative liabilities 361 292
Total liabilities at fair value 385 357
U.S. treasury securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale debt securities 6 4
Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale debt securities 36 36
Asset-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale debt securities 6 7
Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale debt securities 6 4
Equity securities 20 19
Investments in unconsolidated subsidiaries 0 0
Warehouse receivables 0 0
Derivative assets $ 0 0
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Other assets  
Total assets at fair value $ 26 23
Contingent consideration 0 0
Derivative liabilities $ 0 0
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Other liabilities  
Total liabilities at fair value $ 0 0
Level 1 | U.S. treasury securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale debt securities 6 4
Level 1 | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale debt securities 0 0
Level 1 | Asset-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale debt securities 0 0
Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale debt securities 42 43
Equity securities 0 0
Investments in unconsolidated subsidiaries 0 0
Warehouse receivables 945 1,630
Derivative assets 95 63
Total assets at fair value 1,082 1,736
Contingent consideration 0 0
Derivative liabilities 361 292
Total liabilities at fair value 361 292
Level 2 | U.S. treasury securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale debt securities 0 0
Level 2 | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale debt securities 36 36
Level 2 | Asset-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale debt securities 6 7
Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale debt securities 0 0
Equity securities 0 0
Investments in unconsolidated subsidiaries 19 19
Warehouse receivables 0 0
Derivative assets 0 0
Total assets at fair value 19 19
Contingent consideration 24 65
Derivative liabilities 0 0
Total liabilities at fair value 24 65
Level 3 | U.S. treasury securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale debt securities 0 0
Level 3 | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale debt securities 0 0
Level 3 | Asset-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale debt securities $ 0 $ 0