Investments Securities - Trading Securities (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Trading Securities [Line Items]
Total fair value of trading securities	$ 82,096	$ 51,872
Mortgage-related securities
Trading Securities [Line Items]
Total fair value of trading securities	10,932	9,158
Non-mortgage-related securities
Trading Securities [Line Items]
Total fair value of trading securities	$ 71,164	$ 42,714

Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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+ Details