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Consolidations and Transfers of Financial Assets (Tables)
3 Months Ended
Mar. 31, 2021
Consolidations and Transfers of Financial Assets [Abstract]  
Unconsolidated Variable Interest Entities [Table Text Block] The following table displays the carrying amount and classification of our assets and liabilities that relate to our involvement with unconsolidated securitization and resecuritization trusts.
As of
March 31, 2021December 31, 2020
(Dollars in millions)
Assets and liabilities recorded in our condensed consolidated balance sheets related to unconsolidated mortgage-backed trusts:
Assets:
Trading securities:
Fannie Mae$1,243 $1,611 
Non-Fannie Mae3,598 3,608 
Total trading securities4,841 5,219 
Available-for-sale securities:
Fannie Mae1,036 1,168 
Non-Fannie Mae279 318 
Total available-for-sale securities1,315 1,486 
Other assets39 41 
Other liabilities
(65)(67)
Net carrying amount
$6,130 $6,679