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 business-line 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 United States providing automotive financing services to consumers, automotive dealers, companies, and municipalities. Our automotive finance services include providing retail installment sales contracts, loans and operating leases, offering term loans to dealers, financing dealer floorplans and other lines of credit to dealers, warehouse lines to automotive retailers, fleet financing, providing financing to companies and municipalities for the purchase or lease of vehicles, 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 VSCs, VMCs, and GAP products. We also underwrite select commercial insurance coverages, which primarily insure dealers vehicle inventory. Mortgage Finance operations  Consists of the management of held-for-investment and held-for sale consumer mortgage loan portfolios. Our held-for-investment loan portfolio includes bulk purchases of high-quality jumbo and low-to-moderate income (LMI) mortgage loans originated by third parties. Our direct-to-consumer mortgage offering, named Ally Home, consists of a variety of jumbo and conforming fixed- and adjustable-rate mortgage products with the assistance of a third-party fulfillment provider. Jumbo mortgage loans are generally held on our balance sheet and are accounted for as held-for-investment. Conforming mortgage loans are generally originated as held-for-sale and then sold to the fulfillment provider , and we retain no mortgage servicing rights associated with those loans that are sold. 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. We also offer a commercial real estate product to serve companies in the healthcare industry. Corporate and Other primarily consists of 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, original issue discount, 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) 2019 Net financing revenue (loss) and other interest income $ 1,078 $ 14 $ 39 $ 60 $ (3 ) $ 1,188 Other revenue 59 289 10 9 46 413 Total net revenue 1,137 303 49 69 43 1,601 Provision for loan losses 265   3 (5 ) 263 Total noninterest expense 443 247 38 22 88 838 Income (loss) from continuing operations before income tax expense $ 429 $ 56 $ 11 $ 44 $ (40 ) $ 500 Total assets $ 115,096 $ 8,478 $ 16,583 $ 5,275 $ 36,053 $ 181,485 2018 Net financing revenue and other interest income $ 956 $ 14 $ 44 $ 50 $ 43 $ 1,107 Other revenue 80 282 2 14 20 398 Total net revenue 1,036 296 46 64 63 1,505 Provision for loan losses 229  2 8 (6 ) 233 Total noninterest expense 424 241 36 20 86 807 Income (loss) from continuing operations before income tax expense $ 383 $ 55 $ 8 $ 36 $ (17 ) $ 465 Total assets $ 114,675 $ 7,776 $ 14,896 $ 4,459 $ 31,295 $ 173,101 (a) Net financing revenue and other interest income after the provision for loan losses totaled $925 million and $874 million for the three months ended September 30, 2019 , and 2018 , respectively. Nine months ended September 30, ($ in millions) Automotive Finance operations Insurance operations Mortgage Finance operations Corporate Finance operations Corporate and Other Consolidated (a) 2019 Net financing revenue and other interest income $ 3,080 $ 41 $ 135 $ 175 $ 46 $ 3,477 Other revenue 188 935 16 30 105 1,274 Total net revenue 3,268 976 151 205 151 4,751 Provision for loan losses 707  2 29 (16 ) 722 Total noninterest expense 1,344 775 111 73 246 2,549 Income (loss) from continuing operations before income tax expense $ 1,217 $ 201 $ 38 $ 103 $ (79 ) $ 1,480 Total assets $ 115,096 $ 8,478 $ 16,583 $ 5,275 $ 36,053 $ 181,485 2018 Net financing revenue and other interest income $ 2,790 $ 39 $ 131 $ 153 $ 137 $ 3,250 Other revenue 209 794 5 36 72 1,116 Total net revenue 2,999 833 136 189 209 4,366 Provision for loan losses 658  4 2 (12 ) 652 Total noninterest expense 1,308 740 102 64 246 2,460 Income (loss) from continuing operations before income tax expense $ 1,033 $ 93 $ 30 $ 123 $ (25 ) $ 1,254 Total assets $ 114,675 $ 7,776 $ 14,896 $ 4,459 $ 31,295 $ 173,101 (a) Net financing revenue and other interest income after the provision for loan losses totaled $2.8 billion and $2.6 billion for the nine months ended September 30, 2019 , and 2018 , respectively.