v3.25.2
Fair Value Disclosures Fair Value Disclosures - Changes in Fair Value under the FVO option (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Mortgage loans held-for-sale        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) $ 1 $ (21) $ 228 $ (180)
Mortgage loans held-for-investment        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) 20 (26) 68 (57)
Debt | Held by Freddie Mac        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) 20 4 31 5
Debt | Held by consolidated trusts        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) (5) (3) (53) 6
Other assets/other liabilities        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) $ 25 $ 99 $ 125 $ 242