Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Other Commitments (Details)

v3.8.0.1
Commitments and Contingencies - Other Commitments (Details) - USD ($)
$ in Millions
Sep. 30, 2017
Dec. 31, 2016
Operating Leases, Future Minimum Payments Receivable [Abstract]    
2017 $ 576  
2018 2,300  
2019 2,100  
2020 1,900  
2021 1,600  
Thereafter 5,800  
Liquefied Natural Gas Commodities    
Loss Contingencies [Line Items]    
Other commitments 1,600 $ 1,900
Forward-Dated Resale and Securities Borrowing Agreements    
Loss Contingencies [Line Items]    
Other commitments 77,200 48,900
Forward-Dated Repurchase and Securities Lending Agreements    
Loss Contingencies [Line Items]    
Other commitments 47,700 24,400
Retail Automotive Loans    
Loss Contingencies [Line Items]    
Other commitments 345 475
Auto Loans and Leases    
Operating Leases, Future Minimum Payments Receivable [Abstract]    
Other commitment, due this year 950  
Residential and Commercial Portfolio Segments | Residential and Commercial Financing Receivable | Loan Purchase Commitments    
Loss Contingencies [Line Items]    
Other commitments 452 767
Commercial Portfolio Segment | Loan Purchase Commitments    
Loss Contingencies [Line Items]    
Other commitments $ 2,000 $ 636