Segment Information

Operating segments are defined as components of an enterprise that engage in business activity from which revenues are earned and expenses incurred for which discrete financial information is available that is evaluated regularly by our chief operating decision maker in deciding how to allocate resources and in assessing performance.

We report our results of operations on a line-of-business basis through four operating segments: Automotive Finance operations, Insurance operations, Mortgage Finance operations, and Corporate Finance operations, with the remaining activity reported in Corporate and Other. The operating segments are determined based on the products and services offered, and reflect the manner in which financial information is currently evaluated by management. The following is a description of each of our reportable operating segments.

Automotive Finance operations — One of the largest full service automotive finance operations in the U.S. providing automotive financing services to consumers and automotive dealers, and automotive and equipment financing services to companies and municipalities. Our automotive finance services include providing retail installment sales contracts, loans and leases, offering term loans to dealers, financing dealer floorplans and other lines of credit to dealers, warehouse lines to companies, fleet financing, providing financing to companies and municipalities for the purchase or lease of vehicles and equipment, and vehicle remarketing services.

Insurance operations — A complementary automotive-focused business offering both consumer finance protection and insurance products sold primarily through the automotive dealer channel, and commercial insurance products sold directly to dealers. As part of our focus on offering dealers a broad range of consumer financial and insurance products, we provide vehicle service contracts, vehicle maintenance contracts, and guaranteed asset protection products. We also underwrite select commercial insurance coverages, which primarily insure dealers' wholesale vehicle inventory.

Mortgage Finance operations — Primarily consists of the management of a held-for-investment consumer mortgage finance loan portfolio, which includes bulk purchases of high-quality jumbo and low-to-moderate income (LMI) mortgage loans originated by third parties. In late 2016, we introduced our direct-to-consumer mortgage offering, named Ally Home, consisting of a variety of jumbo and conforming fixed- and adjustable-rate mortgage products through a third-party fulfillment partner. Under our current arrangement, conforming mortgages are originated as held-for-sale and sold, while jumbo mortgages are originated as held-for-investment. Servicing is performed by a third party and no mortgage servicing rights are created.

Corporate Finance operations — Primarily provides senior secured leveraged cash flow and asset-based loans to mostly U.S.-based middle market companies. Our primary focus is on businesses owned by private equity sponsors with loans typically used for leveraged buyouts, mergers and acquisitions, debt refinancing, restructurings, and working capital. In 2017, we introduced a commercial real estate product to serve companies in the healthcare industry.

Corporate and Other primarily consists of activity related to centralized corporate treasury activities such as management of the cash and corporate investment securities and loan portfolios, short- and long-term debt, retail and brokered deposit liabilities, derivative instruments, the amortization of the discount associated with debt issuances, and the residual impacts of our corporate funds-transfer pricing (FTP) and treasury asset liability management (ALM) activities. Corporate and Other also includes certain equity investments, which primarily consist of FHLB and FRB stock, the management of our legacy mortgage portfolio, which primarily consists of loans originated prior to January 1, 2009, and reclassifications and eliminations between the reportable operating segments. Additionally, financial results related to Ally Invest are currently included within Corporate and Other.

We utilize an FTP methodology for the majority of our business operations. The FTP methodology assigns charge rates and credit rates to classes of assets and liabilities based on expected duration and the benchmark rate curve plus an assumed credit spread. Matching duration allocates interest income and interest expense to these reportable segments so their respective results are insulated from interest rate risk. This methodology is consistent with our ALM practices, which includes managing interest rate risk centrally at a corporate level. The net residual impact of the FTP methodology is included within the results of Corporate and Other.

The information presented in our reportable operating segments is based in part on internal allocations, which involve management judgment.

Financial information for our reportable operating segments is summarized as follows.



Three months ended September 30, ($ in millions)	Automotive Finance operations		Insurance operations		Mortgage Finance operations		Corporate Finance operations		Corporate and Other			Consolidated (a)
2017
Net financing revenue and other interest income	$	950	$	15	$	32	$	39	$	45		$	1,081
Other revenue	82		272		2		5		20			381
Total net revenue	1,032		287		34		44		65			1,462
Provision for loan losses	312		—		4		3		(5		)	314
Total noninterest expense	420		218		28		19		68			753
Income from continuing operations before income tax expense	$	300	$	69	$	2	$	22	$	2		$	395
Total assets	$	112,141	$	7,432	$	9,804	$	3,699	$	30,937		$	164,013
2016
Net financing revenue and other interest income (loss)	$	933	$	14	$	25	$	30	$	(6	)	$	996
Other revenue	74		264		—		4		46			388
Total net revenue	1,007		278		25		34		40			1,384
Provision for loan losses	270		—		1		3		(16		)	258
Total noninterest expense	418		222		16		16		63			735
Income (loss) from continuing operations before income tax expense	$	319	$	56	$	8	$	15	$	(7	)	$	391
Total assets	$	113,669	$	7,259	$	7,933	$	3,232	$	25,304		$	157,397


(a)	Net financing revenue and other interest income after the provision for loan losses totaled $767 million and $738 million for the three months ended September 30, 2017, and 2016, respectively.



Nine months ended September 30, ($ in millions)	Automotive Finance operations		Insurance operations		Mortgage Finance operations		Corporate Finance operations		Corporate and Other			Consolidated (a)
2017
Net financing revenue and other interest income	$	2,774	$	44	$	98	$	121	$	90		$	3,127
Other revenue	290		781		3		33		58			1,165
Total net revenue	3,064		825		101		154		148			4,292
Provision for loan losses	846		—		6		15		(13		)	854
Total noninterest expense	1,283		737		77		57		187			2,341
Income (loss) from continuing operations before income tax expense	$	935	$	88	$	18	$	82	$	(26	)	$	1,097
Total assets	$	112,141	$	7,432	$	9,804	$	3,699	$	30,937		$	164,013
2016
Net financing revenue and other interest income (loss)	$	2,758	$	44	$	71	$	87	$	(29	)	$	2,931
Other revenue	228		777		—		14		119			1,138
Total net revenue	2,986		821		71		101		90			4,069
Provision for loan losses	649		—		4		12		(15		)	650
Total noninterest expense	1,255		733		48		49		133			2,218
Income (loss) from continuing operations before income tax expense	$	1,082	$	88	$	19	$	40	$	(28	)	$	1,201
Total assets	$	113,669	$	7,259	$	7,933	$	3,232	$	25,304		$	157,397


(a)	Net financing revenue and other interest income after the provision for loan losses totaled $2,273 million and $2,281 million for the nine months ended September 30, 2017, and 2016, respectively.