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Financial Risk (Details 17) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Liquidity risk |  |
Demands liabilities and overnight | $ 171 | $ 86
% Demands liabilities and overnight of total deposits | 5.44% | 2.97%
Total liquid assets | $ 1,048 | $ 1,160
% Total assets of total liabilities | 33.40% | 40.15%
% Total liquid assets in the U.S. Federal Reserve | 65.68% | 97.37%
United State of America |  |
Liquidity risk |  |
Total liquid assets | $ 740 | $ 1,132

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