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Subsequent Events	3 Months Ended
Subsequent Events	Mar. 31, 2020
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Subsequent Events On April 24, 2020, the board of directors declared a cash dividend at an annualized rate of 5.06 percent based on capital stock balances outstanding during the first quarter of 2020. The dividend, including dividends classified as interest on mandatorily redeemable capital stock, amounted to $24.2 million and was paid on May 4, 2020.