Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2015

Long-term Debt, Unclassified [Abstract]

Schedule of Long-term Debt Instruments [Table Text Block]

The following tables present the composition of our long-term debt portfolio.

December 31, ($ in millions)	Amount			Interest rate	Weighted-average interest rate (a)		Due date range
2015
Unsecured debt
Fixed rate (b)	$	17,657
Variable rate	375
Trust preferred securities	2,600
Fair value adjustment (c)	334
Total unsecured debt	20,966			0.37 - 8.13%	5.40	%	2016 - 2049
Secured debt
Fixed rate	20,511
Variable rate	24,760
Fair value adjustment (c)	(3		)
Total secured debt (d) (e) (f)	45,268			0.48 - 4.06%	1.18	%	2016 - 2035
Total long-term debt	$	66,234
2014
Unsecured debt
Fixed rate (b)	$	18,858
Variable rate	374
Trust preferred securities	2,598
Fair value adjustment (c)	452
Total unsecured debt	22,282			0.33 - 8.30%	5.90	%	2015 - 2049
Secured debt
Fixed rate	19,793
Variable rate	24,305
Total secured debt (d) (e) (f)	44,098			0.21 - 4.59%	0.94	%	2015 - 2023
Total long-term debt	$	66,380

(a) Based on the debt outstanding and the interest rate at December 31 of each year.

(b) Includes subordinated debt of $1.1 billion and $296 million at December 31, 2015, and 2014, respectively.

(c) Represents the fair value adjustment associated with the application of hedge accounting on certain of our long-term debt positions. Refer to Note 22 for additional information.

(d) Includes $20.3 billion and $24.3 billion of VIE secured debt outstanding at December 31, 2015, and 2014, respectively.

(e) Includes $19.9 billion and $17.0 billion of debt outstanding from the Automotive secured revolving credit facilities at December 31, 2015, and 2014, respectively.

(f) Includes advances from the FHLB of $5.4 billion and $2.8 billion at December 31, 2015, and 2014, respectively.

Schedule of Debt [Table Text Block]

	2015							2014
December 31, ($ in millions)	Unsecured		Secured			Total		Unsecured		Secured		Total
Long-term debt
Due within one year	$	1,829	$	9,427		$	11,256	$	4,780	$	12,603	$	17,383
Due after one year	18,803		35,844			54,647		17,050		31,495		48,545
Fair value adjustment	334		(3		)	331		452		—		452
Total long-term debt	$	20,966	$	45,268		$	66,234	$	22,282	$	44,098	$	66,380

Scheduled Remaining Maturity of Long-term Debt [Table Text Block]

The following table presents the scheduled remaining maturity of long-term debt, assuming no early redemptions will occur. The actual payment of secured debt may vary based on the payment activity of the related pledged assets.

Year ended December 31, ($ in millions)	2016			2017			2018			2019			2020			2021 and thereafter			Fair value adjustment			Total
Unsecured
Long-term debt	$	1,904		$	4,371		$	3,702		$	1,615		$	2,228		$	8,203		$	334		$	22,357
Original issue discount	(75		)	(87		)	(98		)	(35		)	(35		)	(1,061		)	—			(1,391		)
Total unsecured	1,829			4,284			3,604			1,580			2,193			7,142			334			20,966
Secured
Long-term debt	9,427			15,217			9,109			5,823			3,414			2,281			(3		)	45,268
Total long-term debt	$	11,256		$	19,501		$	12,713		$	7,403		$	5,607		$	9,423		$	331		$	66,234

Pledged assets for the payment of the related secured borrowings and repurchase agreements [Table Text Block]

The following summarizes assets restricted as collateral for the payment of the related debt obligation primarily arising from securitization transactions accounted for as secured borrowings and repurchase agreements.

	2015					2014
December 31, ($ in millions)	Total			Ally Bank (a)		Total			Ally Bank (a)
Investment securities (b)	$	2,420		$	1,761	$	786		$	786
Mortgage assets held-for-investment and lending receivables	9,743			9,743		7,541			7,541
Consumer automotive finance receivables	34,324			9,167		33,438			11,263
Commercial automotive finance receivables	19,623			19,177		20,605			20,083
Investment in operating leases, net	5,539			3,205		6,820			4,672
Total assets restricted as collateral (c) (d)	$	71,649		$	43,053	$	69,190		$	44,345
Secured debt	$	49,916	(e)	$	24,787	$	47,822	(e)	$	27,103

(a) Ally Bank is a component of the total column.

(b) Certain investment securities are restricted under repurchase agreements. Refer to Note 15 for information on the repurchase agreements.

(c) Ally Bank has an advance agreement with the FHLB, and had assets pledged to secure borrowings that were restricted as collateral to the FHLB totaling $14.9 billion and $10.7 billion at December 31, 2015, and 2014, respectively. These assets were composed primarily of consumer mortgage finance receivables and loans, net and investment securities. Ally Bank has access to the Federal Reserve Bank Discount Window. Ally Bank had assets pledged and restricted as collateral to the Federal Reserve Bank totaling $2.9 billion and $3.2 billion at December 31, 2015, and 2014, respectively. These assets were composed of consumer automotive finance receivables and loans, net and investment in operating leases, net. Availability under these programs is only for the operations of Ally Bank and cannot be used to fund the operations or liabilities of Ally or its subsidiaries.

(d) Excludes restricted cash and cash reserves for securitization trusts recorded within other assets on the Consolidated Balance Sheet. Refer to Note 13 for additional information.

(e) Includes $4.6 billion and $3.7 billion of short-term borrowings at December 31, 2015, and 2014, respectively

Schedule Of Committed Funding Facilities [Table Text Block]

	Outstanding				Unused capacity (a)				Total capacity
December 31, ($ in millions)	2015		2014		2015		2014		2015		2014
Bank funding
Secured (b)	$	3,250	$	3,250	$	—	$	250	$	3,250	$	3,500
Parent funding
Secured	16,914		15,030		251		3,425		17,165		18,455
Total committed facilities	$	20,164	$	18,280	$	251	$	3,675	$	20,415	$	21,955

(a) Funding from committed secured facilities is available on request in the event excess collateral resides in certain facilities or is available to the extent incremental collateral is available and contributed to the facilities.

(b) Excludes off-balance sheet credit facility amounts.