Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVE FINANCIAL INSTRUMENTS - Asset and Liability Management (Details)

v3.7.0.1
DERIVATIVE FINANCIAL INSTRUMENTS - Asset and Liability Management (Details)
Mar. 31, 2017
USD ($)
Notional Disclosures [Abstract]  
Derivative, Notional Amount $ 10,725,000,000
Fair Value Hedging  
Notional Disclosures [Abstract]  
Derivative, Notional Amount 8,175,000,000
Cash Flow Hedging  
Notional Disclosures [Abstract]  
Derivative, Notional Amount 2,550,000,000
Loan  
Notional Disclosures [Abstract]  
Derivative, Notional Amount 2,550,000,000
Loan | Fair Value Hedging  
Notional Disclosures [Abstract]  
Derivative, Notional Amount 0
Loan | Cash Flow Hedging  
Notional Disclosures [Abstract]  
Derivative, Notional Amount 2,550,000,000
Subordinated notes  
Notional Disclosures [Abstract]  
Derivative, Notional Amount 950,000,000
Subordinated notes | Fair Value Hedging  
Notional Disclosures [Abstract]  
Derivative, Notional Amount 950,000,000
Subordinated notes | Cash Flow Hedging  
Notional Disclosures [Abstract]  
Derivative, Notional Amount 0
Other long-term debt  
Notional Disclosures [Abstract]  
Derivative, Notional Amount 7,225,000,000
Other long-term debt | Fair Value Hedging  
Notional Disclosures [Abstract]  
Derivative, Notional Amount 7,225,000,000
Other long-term debt | Cash Flow Hedging  
Notional Disclosures [Abstract]  
Derivative, Notional Amount $ 0