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Investments in Securities (Tables)
 9 Months Ended
Sep. 30, 2025
Investments, Debt and Equity Securities [Abstract]  
Investments In Trading Securities
The following table displays our investments in securities.
As of
September 30, 2025December 31, 2024
Trading securities:(Dollars in millions)
Mortgage-related securities (includes $265 million and $300 million, respectively, related to consolidated trusts)
$5,102 $1,098 
Non-mortgage-related securities66,166 77,630 
Total trading securities71,268 78,728 
Available-for-sale securities (amortized cost of $412 million and $487 million, respectively)
388 469 
Total investments in securities$71,656 $79,197 
Schedule of Trading Securities Gains (Losses), Net
The following table displays information about our net trading gains (losses).
For the Three Months Ended September 30,For the Nine Months Ended September 30,
2025202420252024
(Dollars in millions)
Net trading gains (losses)
$296 $1,267 $1,279 $1,127 
Net trading gains (losses) recognized in the period related to securities still held at period end
257 1,074 1,044 938