Trading Assets and Liabilities and Derivatives Trading Assets and Liabilities and Derivatives (Tables)

12 Months Ended

Dec. 31, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Trading Securities [Table Text Block]

The fair values of the components of trading assets and liabilities and derivative instruments are presented in the following table:

(Dollars in millions)	December 31, 2016		December 31, 2015
Trading Assets and Derivative Instruments:
U.S. Treasury securities		$539		$538
Federal agency securities	480		588
U.S. states and political subdivisions	134		30
MBS - agency	567		553
CLO securities	1		2
Corporate and other debt securities	656		468
CP	140		67
Equity securities	49		66
Derivative instruments 1	984		1,152
Trading loans 2	2,517		2,655
Total trading assets and derivative instruments		$6,067		$6,119
Trading Liabilities and Derivative Instruments:
U.S. Treasury securities		$697		$503
MBS - agency	1		37
Corporate and other debt securities	255		259
Derivative instruments 1	398		464
Total trading liabilities and derivative instruments		$1,351		$1,263

¹ Amounts include the impact of offsetting cash collateral received from and paid to the same derivative counterparties, and the impact of netting derivative assets and derivative liabilities when a legally enforceable master netting agreement or similar agreement exists.

² Includes loans related to TRS.

Schedule of Financial Instruments Owned and Pledged as Collateral [Table Text Block]

Pledged trading assets are presented in the following table:

(Dollars in millions)	December 31, 2016		December 31, 2015
Pledged trading assets to secure repurchase agreements 1		$968		$986
Pledged trading assets to secure certain derivative agreements	471		393
Pledged trading assets to secure other arrangements	40		40

¹ Repurchase agreements secured by collateral totaled $928 million and $950 million at December 31, 2016 and 2015, respectively.