Derivative Instruments and Other Financial Instruments Used For Hedging (Tables)

6 Months Ended

Jun. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Notional Amounts, Balance Sheet Location and Fair Value Amounts of Derivative Instruments

The table below presents the notional amounts and fair value amounts of the Company's derivative instruments reported on the consolidated balance sheets, segregated between derivative instruments designated and qualifying as hedging instruments and derivative instruments not designated as hedging instruments as of June 30, 2018 and December 31, 2017. Asset and liability values are presented gross, excluding the impact of legally enforceable master netting and credit support annex agreements. The fair value of asset and liability derivatives designated and qualifying as hedging instruments and derivatives designated as other risk management are included in other assets and other liabilities, respectively. The fair value of asset and liability trading derivatives are included in trading account assets and trading account liabilities, respectively.

	June 30, 2018						December 31, 2017
			Fair Value						Fair Value
	Notional		Asset		Liability		Notional		Asset		Liability
(Dollars in millions)	Amount		Derivatives		Derivatives		Amount		Derivatives		Derivatives
Cash flow hedges
Interest rate contracts	$	181	$	4	$	—	$	6,998	$	2	$	149
Fair value hedges
Interest rate contracts	—		—		—		500		—		—
Not designated as hedging instruments:
Trading
Interest rate contracts	108,129		469		688		132,214		878		646
Commodity contracts	569		43		32		1,244		50		33
Foreign exchange contracts	7,975		238		140		7,053		250		146
Equity contracts	815		52		52		1,496		139		144
Other contracts	46		—		—		4		—		—
Total Trading	117,534		802		912		142,011		1,317		969
Other risk management	1,300		1		22		1,345		3		9
Total derivative instruments	$	119,015	$	807	$	934	$	150,854	$	1,322	$	1,127

Amount and Location of Gains and Losses for Derivatives Designated as Cash Flow Hedges

The following tables present the amount and location of the net gains and losses recorded in the Company’s consolidated statements of income and changes in stockholders' equity for derivatives designated as cash flow hedges for the three and six months ended June 30, 2018 and 2017.

	Amount of Gain or (Loss) Recognized in OCI on Derivative Instruments (Effective Portion)						Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)						(Gain) Loss Recognized in Income on Derivative Instruments (Ineffective Portion)
	For the Three Months Ended June 30,						For the Three Months Ended June 30,						For the Three Months Ended June 30,
(Dollars in millions)	2018			2017		Location	2018			2017		Location	2018			2017
Derivatives in cash flow hedging relationships
						Interest income	$	(8	)	$	20
Interest rate contracts	$	(19	)	$	55	Interest expense	—			—		Noninterest expense	$	(1	)	$	1
Total	$	(19	)	$	55		$	(8	)	$	20		$	(1	)	$	1

	Amount of Gain or (Loss) Recognized in OCI on Derivative Instruments (Effective Portion)						Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)						Gain (Loss) Recognized in Income on Derivative Instruments (Ineffective Portion)
	For the Six Months Ended June 30,						For the Six Months Ended June 30,						For the Six Months Ended June 30,
(Dollars in millions)	2018			2017		Location	2018			2017		Location	2018			2017
Derivatives in cash flow hedging relationships
						Interest income	$	(8	)	$	49
Interest rate contracts	$	(98	)	$	36	Interest expense	—			—		Noninterest expense	$	(1	)	$	3
Total	$	(98	)	$	36		$	(8	)	$	49		$	(1	)	$	3

Schedule of derivative gains (losses) on the Company's fair value hedges

The following tables present the gains (losses) on the Company's fair value hedges and hedged item for the three and six months ended June 30, 2018 and 2017.

	For the Three Months Ended June 30, 2018						For the Six Months Ended June 30, 2018
(Dollars in millions)	Derivative		Hedged Item		Hedge Ineffectiveness		Derivative			Hedged Item		Hedge Ineffectiveness
Interest rate risk on long-term debt	$	—	$	—	$	—	$	(2	)	$	2	$	—
Total	$	—	$	—	$	—	$	(2	)	$	2	$	—

	For the Three Months Ended June 30, 2017							For the Six Months Ended June 30, 2017
(Dollars in millions)	Derivative		Hedged Item			Hedge Ineffectiveness		Derivative			Hedged Item		Hedge Ineffectiveness
Interest rate risk on long-term debt	$	1	$	(1	)	$	—	$	(1	)	$	—	$	(1	)
Total	$	1	$	(1	)	$	—	$	(1	)	$	—	$	(1	)

Gain or (Loss) Recognized in Income on Derivative Instruments

The following table presents the amount of the net gains and losses for derivative instruments classified as trading reported in the consolidated statements of income under the heading trading account activities for the three and six months ended June 30, 2018 and 2017.

	Gain or (Loss) Recognized in Income on Derivative Instruments					Gain or (Loss) Recognized in Income on Derivative Instruments
	For the Three Months Ended					For the Six Months Ended
(Dollars in millions)	June 30, 2018		June 30, 2017			June 30, 2018		June 30, 2017
Trading derivatives:
Interest rate contracts	$	17	$	(36	)	$	130	$	(58	)
Equity contracts	1		—			18		—
Foreign exchange contracts	12		11			21		21
Commodity contracts	—		1			—		1
Total	$	30	$	(24	)	$	169	$	(36	)