Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Credit Extension Commitments Narrative (Details)

v3.7.0.1
Commitments and Contingencies - Credit Extension Commitments Narrative (Details) - USD ($)
$ in Millions
Jun. 30, 2017
Dec. 31, 2016
Other Commitments [Line Items]    
Legally binding unfunded commitments syndicated $ 11,600 $ 12,100
Carrying amount credit extension commitments syndicated 775 779
Deferred revenue 18 17
Other liabilities reserve for unfunded lending commitments 757 762
Notional amount of credit extension commitments under fair value option 4,500 7,000
Unfunded loan commitments    
Other Commitments [Line Items]    
Fair value carrying amount liabilities $ 138 $ 173