Cash and Due from Banks	12 Months Ended
Dec. 31, 2019
Cash and Due from Banks [Abstract]
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash and due from banks includes certain compensating balances, where the Bank maintains collected cash balances with commercial banks in consideration for certain services. There are no legal restrictions under these agreements on the withdrawal of these funds.
Cash and Cash Equivalents Disclosure [Text Block]	Cash and Due from Banks Cash on hand, cash items in the process of collection, and amounts due from correspondent banks and the Federal Reserve Bank are included in Cash and due from banks on the Statements of Condition. Cash and due from banks includes certain compensating balances, where the Bank maintains collected cash balances with commercial banks in consideration for certain services. There are no legal restrictions under these agreements on the withdrawal of these funds. The average collected cash balances were approximately $20 for 2019 and $23 for 2018.

Cash and Due from Banks

12 Months Ended

Dec. 31, 2019

Cash and Cash Equivalents, Policy [Policy Text Block]

Cash and due from banks includes certain compensating balances, where the Bank maintains collected cash balances with commercial banks in consideration for certain services. There are no legal restrictions under these agreements on the withdrawal of these funds.

Cash and Cash Equivalents Disclosure [Text Block]

Cash and Due from Banks

Cash on hand, cash items in the process of collection, and amounts due from correspondent banks and the Federal Reserve Bank are included in Cash and due from banks on the Statements of Condition.