Fair Value (Tables)

9 Months Ended

Sep. 30, 2015

Fair Value Disclosures [Abstract]

Fair Value Measurements - Recurring Basis [Table Text Block]

The following tables display the assets and liabilities measured at fair value on a recurring basis including financial instruments elected for the fair value option. We often economically hedge the fair value change of our assets or liabilities with derivatives and other financial instruments. The tables below display the hedges separately from the hedged items; therefore, they do not directly display the impact of our risk management activities.

	Recurring fair value measurements
September 30, 2015($ in millions)	Level 1			Level 2			Level 3		Total
Assets
Investment securities
Available-for-sale securities
Debt securities
U.S. Treasury and federal agencies	$	1,114		$	695		$	—	$	1,809
U.S. State and political subdivisions	—			651			—		651
Foreign government	10			174			—		184
Mortgage-backed residential	—			11,614			—		11,614
Mortgage-backed commercial	—			517			—		517
Asset-backed	—			1,951			—		1,951
Corporate debt securities	—			1,047			—		1,047
Total debt securities	1,124			16,649			—		17,773
Equity securities (a)	985			—			—		985
Total available-for-sale securities	2,109			16,649			—		18,758
Other assets
Interests retained in financial asset sales	—			—			29		29
Derivative contracts in a receivable position (b)
Interest rate	5			287			—		292
Foreign currency	—			3			—		3
Other	4			—			—		4
Total derivative contracts in a receivable position	9			290			—		299
Total assets	$	2,118		$	16,939		$	29	$	19,086
Liabilities
Accrued expenses and other liabilities
Derivative contracts in a payable position (b)
Interest rate	$	(4	)	$	(160	)	$	—	$	(164	)
Foreign currency	—			(1		)	—		(1		)
Other	(3		)	(8		)	—		(11		)
Total derivative contracts in a payable position	(7		)	(169		)	—		(176		)
Total liabilities	$	(7	)	$	(169	)	$	—	$	(176	)

(a) Our investment in any one industry did not exceed 13%.

(b) For additional information on derivative instruments and hedging activities, refer to Note 20.

	Recurring fair value measurements
December 31, 2014 ($ in millions)	Level 1			Level 2			Level 3		Total
Assets
Investment securities
Available-for-sale securities
Debt securities
U.S. Treasury and federal agencies	$	217		$	961		$	—	$	1,178
U.S. State and political subdivisions	—			406			—		406
Foreign government	14			218			—		232
Mortgage-backed residential	—			10,425			—		10,425
Mortgage-backed commercial	—			253			—		253
Asset-backed	—			1,991			—		1,991
Corporate debt securities	—			746			—		746
Total debt securities	231			15,000			—		15,231
Equity securities (a)	906			—			—		906
Total available-for-sale securities	1,137			15,000			—		16,137
Mortgage loans held-for-sale, net (b)	—			—			3		3
Other assets
Interests retained in financial asset sales	—			—			47		47
Derivative contracts in a receivable position (c)
Interest rate	4			252			—		256
Foreign currency	—			5			—		5
Other	2			—			—		2
Total derivative contracts in a receivable position	6			257			—		263
Collateral placed with counterparties (d)	—			15			—		15
Total assets	$	1,143		$	15,272		$	50	$	16,465
Liabilities
Accrued expenses and other liabilities
Derivative contracts in a payable position (c)
Interest rate	$	(2	)	$	(166	)	$	—	$	(168	)
Foreign currency	—			(78		)	—		(78		)
Other	(2		)	(4		)	—		(6		)
Total derivative contracts in a payable position	(4		)	(248		)	—		(252		)
Total liabilities	$	(4	)	$	(248	)	$	—	$	(252	)

(a) Our investment in any one industry did not exceed 16%.

(b) Carried at fair value due to fair value option elections.

(c) For additional information on derivative instruments and hedging activities, refer to Note 20.

(d) Represents collateral in the form of investment securities. Cash collateral was excluded.

Fair Value Measurements - Reconciliation of Level 3 Assets and Liabilities [Table Text Block]

The following tables present the reconciliation for all Level 3 assets and liabilities measured at fair value on a recurring basis. We often economically hedge the fair value change of our assets or liabilities with derivatives and other financial instruments. The Level 3 items presented below may be hedged by derivatives and other financial instruments that are classified as Level 1 or Level 2. Thus, the following tables do not fully reflect the impact of our risk management activities.

	Level 3 recurring fair value measurements
			Net realized/unrealized gains																	Fair value at September 30, 2015		Net unrealized gains included in earnings still held at September 30, 2015
($ in millions)	Fair value at July 1, 2015		included in earnings			included in OCI		Purchases		Sales			Issuances		Settlements			Transfers out of Level 3
Assets
Mortgage loans held-for-sale, net	$	4	$	—		$	—	$	—	$	(4	)	$	—	$	—		$	—	$	—	$	—
Other assets
Interests retained in financial asset sales	32		1		(a)	—		—		—			1		(5		)	—		29		—
Total assets	$	36	$	1		$	—	$	—	$	(4	)	$	1	$	(5	)	$	—	$	29	$	—

(a) Reported as other income, net of losses, in the Condensed Consolidated Statement of Comprehensive Income.

	Level 3 recurring fair value measurements
	Fair value at July 1, 2014		Net realized/unrealized gains					Purchases		Sales		Issuances		Settlements			Transfers out of Level 3		Fair value at September 30, 2014		Net unrealized gains included in earnings still held at September 30, 2014
($ in millions)			included in earnings			included in OCI
Assets
Other assets
Interests retained in financial asset sales	$	74	$	4	(a)	$	—	$	—	$	—	$	—	$	(17	)	$	—	$	61	$	—
Total assets	$	74	$	4		$	—	$	—	$	—	$	—	$	(17	)	$	—	$	61	$	—

(a)    Reported as other income, net of losses, in the Condensed Consolidated Statement of Comprehensive Income.

	Level 3 recurring fair value measurements
	Fair Value at Jan. 1, 2015		Net realized/unrealized gains					Purchases		Sales			Issuances		Settlements			Transfers out of Level 3		Fair value at September 30, 2015		Net unrealized gains included in earnings still held at September 30, 2015
($ in millions)			included in earnings			included in OCI
Assets
Mortgage loans held-for-sale, net	$	3	$	1		$	—	$	—	$	(4	)	$	—	$	—		$	—	$	—	$	—
Other assets
Interests retained in financial asset sales	47		8		(a)	—		—		—			2		(28		)	—		29		—
Total assets	$	50	$	9		$	—	$	—	$	(4	)	$	2	$	(28	)	$	—	$	29	$	—

(a) Reported as other income, net of losses, in the Condensed Consolidated Statement of Comprehensive Income.

	Level 3 recurring fair value measurements
	Fair Value at Jan. 1, 2014			Net realized/unrealized gains					Purchases		Sales		Issuances		Settlements			Transfers out of level 3		Fair value at September 30, 2014		Net unrealized gains included in earnings still held at September 30, 2014
($ in millions)				included in earnings			included in OCI
Assets
Other assets
Interests retained in financial asset sales	$	100		$	9	(a)	$	—	$	—	$	—	$	—	$	(48	)	$	—	$	61	$	—
Derivative contracts, net	(1		)	—			—		—		—		—		(2		)	3		—		—
Total assets	$	99		$	9		$	—	$	—	$	—	$	—	$	(50	)	$	3	$	61	$	—

(a) Reported as other income, net of losses, in the Condensed Consolidated Statement of Comprehensive Income.

Fair Value Measurements - Nonrecurring Basis [Table Text Block]

The following tables display the assets and liabilities measured at fair value on a nonrecurring basis.

	Nonrecurring fair value measurements								Lower-of-cost or fair value or valuation reserve allowance			Total gain included in earnings for the three months ended		Total gain included in earnings for the nine months ended
September 30, 2015($ in millions)	Level 1		Level 2		Level 3		Total
Assets
Loans held-for-sale, net
Other	$	—	$	—	$	37	$	37	$	—		n/m	(a)	n/m	(a)
Total loans held-for-sale, net	—		—		37		37		—			n/m	(a)	n/m	(a)
Commercial finance receivables and loans, net (b)
Automotive	—		—		13		13		(4		)	n/m	(a)	n/m	(a)
Other	—		—		30		30		(15		)	n/m	(a)	n/m	(a)
Total commercial finance receivables and loans, net	—		—		43		43		(19		)	n/m	(a)	n/m	(a)
Other assets
Repossessed and foreclosed assets (c)	—		—		9		9		(3		)	n/m	(a)	n/m	(a)
Other	—		—		2		2		—			n/m	(a)	n/m	(a)
Total assets	$	—	$	—	$	91	$	91	$	(22	)	n/m		n/m

n/m = not meaningful

(a) We consider the applicable valuation or loan loss allowance to be the most relevant indicator of the impact on earnings caused by the fair value measurement. Accordingly, the table above excludes total gains and losses included in earnings for these items. The carrying values are inclusive of the respective valuation or loan loss allowance.

(b) Represents the portion of the portfolio specifically impaired during 2015. The related valuation allowance represents the cumulative adjustment to fair value of those specific receivables.

(c) The allowance provided for repossessed and foreclosed assets represents any cumulative valuation adjustment recognized to adjust the assets to fair value.

	Nonrecurring fair value measurements								Lower-of-cost or fair value or valuation reserve allowance			Total gain included in earnings for the three months ended			Total gain included in earnings for the nine months ended
September 30, 2014 ($ in millions)	Level 1		Level 2		Level 3		Total
Assets
Commercial finance receivables and loans, net (a)
Automotive	$	—	$	—	$	16	$	16	$	(1	)	n/m		(b)	n/m		(b)
Other	—		—		37		37		(14		)	n/m		(b)	n/m		(b)
Total commercial finance receivables and loans, net	—		—		53		53		(15		)	n/m		(b)	n/m		(b)
Other assets
Repossessed and foreclosed assets (c)	—		—		8		8		(3		)	n/m		(b)	n/m		(b)
Other	—		—		2		2		—			$	—		$	—
Total assets	$	—	$	—	$	63	$	63	$	(18	)	n/m			n/m

n/m = not meaningful

(a) Represents the portion of the portfolio specifically impaired during 2014. The related valuation allowance represents the cumulative adjustment to fair value of those specific receivables.

(b) We consider the applicable valuation or loan loss allowance to be the most relevant indicator of the impact on earnings caused by the fair value measurement. Accordingly, the table above excludes total gains and losses included in earnings for these items. The carrying values are inclusive of the respective valuation or loan loss allowance.

(c) The allowance provided for repossessed and foreclosed assets represents any cumulative valuation adjustment recognized to adjust the assets to fair value.

Fair Value of Financial Intruments [Table Text Block]

The following table presents the carrying and estimated fair value of financial instruments, except for those recorded at fair value on a recurring basis presented in the previous section of this note titled Recurring Fair Value. When possible, we use quoted market prices to determine fair value. Where quoted market prices are not available, the fair value is internally derived based on appropriate valuation methodologies with respect to the amount and timing of future cash flows and estimated discount rates. However, considerable judgment is required in interpreting market data to develop estimates of fair value, so the estimates are not necessarily indicative of the amounts that could be realized or would be paid in a current market exchange. The effect of using different market assumptions or estimation methodologies could be material to the estimated fair values. Fair value information presented herein was based on information available at September 30, 2015, and December 31, 2014.

			Estimated fair value
($ in millions)	Carrying value		Level 1		Level 2		Level 3		Total
September 30, 2015
Financial assets
Loans held-for-sale, net	$	37	$	—	$	—	$	37	$	37
Finance receivables and loans, net	106,973		—		—		107,846		107,846
Nonmarketable equity investments	313		—		287		43		330
Financial liabilities
Deposit liabilities	$	64,041	$	—	$	—	$	64,728	$	64,728
Short-term borrowings	5,378		—		—		5,378		5,378
Long-term debt	67,461		—		21,384		47,762		69,146
December 31, 2014
Financial assets
Loans held-for-sale, net	$	2,003	$	—	$	485	$	1,554	$	2,039
Finance receivables and loans, net	98,971		—		—		99,430		99,430
Nonmarketable equity investments	271		—		246		33		279
Financial liabilities
Deposit liabilities	$	58,222	$	—	$	—	$	58,777	$	58,777
Short-term borrowings	7,062		—		—		7,063		7,063
Long-term debt	66,558		—		25,224		44,084		69,308