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Trading Securities (Tables)
12 Months Ended
Dec. 31, 2019
Debt Securities, Trading, and Equity Securities, FV-NI [Abstract]  
Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block]
Trading securities were as follows (dollars in millions):
 
December 31,
 
2019
 
2018
Non-mortgage-backed securities
 
 
 
Other U.S. obligations1
$
150

 
$
159

GSE and Tennessee Valley Authority obligations
60

 
57

Other2
259

 
266

     Total non-mortgage-backed securities
469

 
482

Mortgage-backed securities
 
 
 
GSE multifamily
419

 
433

Total fair value
$
888

 
$
915


1
Represents investment securities backed by the full faith and credit of the U.S. Government.

2
Consists of taxable municipal bonds.