Quarterly report pursuant to Section 13 or 15(d)

Securitizations and Other Variable Interest Entities - Narrative (Details)

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Securitizations and Other Variable Interest Entities - Narrative (Details) - USD ($)
$ in Millions
Mar. 31, 2016
Dec. 31, 2015
Mar. 31, 2015
Variable Interest Entity [Line Items]      
Consolidated total assets $ 2,185,498 $ 2,144,316 $ 2,143,545
Accounting Standards Update 2015-02 | Unconsolidated VIEs      
Variable Interest Entity [Line Items]      
Maximum loss exposure 4,400    
Consolidated total assets $ 12,500