Statements of Condition (Parenthetical) - USD ($) shares in Millions, $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Held-to-maturity securities, fair value	$ 2,439	$ 3,021
Capital stock - Class B putable, par value per share	$ 100
Loans and Leases Receivable, Allowance	$ 1	$ 1
Common Class B [Member]
Capital stock - Class B putable, par value per share	$ 100	$ 100
Capital stock - Class B putable, issued shares	45	54
Capital stock - Class B putable, outstanding shares	45	54

Face amount or stated value per share of common stock.

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