Segment Information The Company is primarily engaged in writing personal automobile insurance and provides related property and casualty insurance products to its customers through 14 subsidiaries in 11 states, principally in California. The Company has one reportable business segment - the Property and Casualty business segment. The Companys Chief Operating Decision Maker evaluates operating results based on pre-tax underwriting results which is calculated as net premiums earned less (a) losses and loss adjustment expenses and (b) underwriting expenses (policy acquisition costs and other operating expenses). Expenses are allocated based on certain assumptions that are primarily related to premiums and losses. The Companys net investment income, net realized investment gains or losses, other income, and interest expense are excluded in evaluating pretax underwriting profit. The Company does not allocate its assets, including investments, or income taxes in evaluating pre-tax underwriting profit. Property and Casualty Lines The Property and Casualty business segment offers several insurance products to the Companys individual customers and small business customers. These insurance products are: private passenger automobile which is the Companys primary business, and related insurance products such as homeowners, commercial automobile and commercial property. These related insurance products are primarily sold to the Companys individual customers and small business customers, which increases retention of the Companys private passenger automobile client base. The insurance products comprising the Property and Casualty business segment are sold through the same distribution channels, mainly through independent and 100% owned insurance agents, and go through a similar underwriting process. Other Lines The Other business segment represents net premiums written and earned from an operating segment that does not meet the quantitative thresholds required to be considered a reportable segment. This operating segment offers automobile mechanical protection warranties which are primarily sold through automobile dealerships and credit unions. The following tables present the Company's operating results by reportable segment: Three Months Ended June 30, 2020 2019 Property &amp; Casualty Other Total Property &amp; Casualty Other Total (Amounts in millions) Net premiums earned $ 804.8 $ 7.1 $ 811.9 $ 881.8 $ 7.0 $ 888.8 Less: Losses and loss adjustment expenses 492.1 3.2 495.3 653.3 3.3 656.6 Underwriting expenses 217.4 3.4 220.8 213.5 3.5 217.0 Underwriting gain 95.3 0.5 95.8 15.0 0.2 15.2 Investment income 34.2 35.0 Net realized investment gains 158.4 53.3 Other income 1.4 2.4 Interest expense (4.3) (4.3) Pre-tax income $ 285.5 $ 101.6 Net income $ 228.2 $ 83.3 Six Months Ended June 30, 2020 2019 Property &amp; Casualty Other Total Property &amp; Casualty Other Total (Amounts in millions) Net premiums earned $ 1,720.2 $ 14.3 $ 1,734.5 $ 1,744.9 $ 14.1 $ 1,759.0 Less: Losses and loss adjustment expenses 1,140.3 6.7 1,147.0 1,280.1 6.9 1,287.0 Underwriting expenses 446.8 7.1 453.9 426.0 6.9 432.9 Underwriting gain 133.1 0.5 133.6 38.8 0.3 39.1 Investment income 68.7 69.2 Net realized investment (losses) gains (92.9) 164.4 Other income 3.9 4.6 Interest expense (8.5) (8.5) Pre-tax income $ 104.8 $ 268.8 Net income $ 89.0 $ 219.1 The following tables present the Companys net premiums earned and direct premiums written by reportable segment and line of insurance business: Three Months Ended June 30, 2020 2019 Property &amp; Casualty Other Total Property &amp; Casualty Other Total (Amounts in millions) Private passenger automobile $ 579.7 $  $ 579.7 $ 684.3 $  $ 684.3 Homeowners 146.5  146.5 123.9  123.9 Commercial automobile 51.1  51.1 51.4  51.4 Other 27.5 7.1 34.6 22.2 7.0 29.2 Net premiums earned $ 804.8 $ 7.1 $ 811.9 $ 881.8 $ 7.0 $ 888.8 Private passenger automobile $ 555.0 $  $ 555.0 $ 697.6 $  $ 697.6 Homeowners 180.7  180.7 159.0  159.0 Commercial automobile 55.8  55.8 55.8  55.8 Other 31.6 5.7 37.3 25.7 8.0 33.7 Direct premiums written $ 823.1 $ 5.7 $ 828.8 $ 938.1 $ 8.0 $ 946.1