Federal Funds Sold and Securities Borrowed or Purchased Under Agreements to Resell (Tables)

12 Months Ended

Dec. 31, 2016

Securities Purchased under Agreements to Resell [Abstract]

Schedule of Resale Agreements [Table Text Block]

Fed funds sold and securities borrowed or purchased under agreements to resell were as follows:



(Dollars in millions)	December 31, 2016		December 31, 2015
Fed funds sold		$58		$38
Securities borrowed	270		277
Securities purchased under agreements to resell	979		962
Total Fed funds sold and securities borrowed or purchased under agreements to resell		$1,307		$1,277

Securities sold under agreements to repurchase remaining contractual maturity [Table Text Block]

Securities sold under agreements to repurchase are accounted for as secured borrowings. The following table presents the Company’s related activity, by collateral type and remaining contractual maturity:



	December 31, 2016								December 31, 2015
(Dollars in millions)	Overnight and Continuous		Up to 30 days		30-90 days		Total		Overnight and Continuous		Up to 30 days		Total
U.S. Treasury securities		$27		$—		$—		$27		$112		$—		$112
Federal agency securities	288		24		—		312		319		—		319
MBS - agency	793		51		—		844		837		23		860
CP	49		—		—		49		49		—		49
Corporate and other debt securities	311		50		40		401		242		72		314
Total securities sold under agreements to repurchase		$1,468		$125		$40		$1,633		$1,559		$95		$1,654

Netting of Financial Instruments - Repurchase Agreements [Table Text Block]

The following table includes the amount of collateral pledged or received related to exposures subject to enforceable MRAs. While these agreements are typically over-collateralized, U.S. GAAP requires disclosure in this table to limit the amount of such collateral to the amount of the related recognized asset or liability for each counterparty.



(Dollars in millions)	Gross Amount		Amount Offset		Net Amount Presented in Consolidated Balance Sheets			Held/Pledged Financial Instruments		Net Amount
December 31, 2016
Financial assets:
Securities borrowed or purchased under agreements to resell		$1,249		$—		$1,249	¹		$1,241		$8
Financial liabilities:
Securities sold under agreements to repurchase	1,633		—		1,633			1,633		—

December 31, 2015
Financial assets:
Securities borrowed or purchased under agreements to resell		$1,239		$—		$1,239	¹		$1,229		$10
Financial liabilities:
Securities sold under agreements to repurchase	1,654		—		1,654			1,654		—

¹Excludes $58 million and $38 million of Fed funds sold, which are not subject to a master netting agreement at December 31, 2016 and 2015, respectively