Total assets by segment are presented in the following tables. September 30, 2020 CNA Financial Boardwalk Pipelines Loews Hotels &amp; Co Corporate Diamond Offshore (a) Total (In millions) Total assets $ 62,728 $ 9,666 $ 1,685 $ 5,385 $ - $ 79,464 December 31, 2019 Total assets $ 60,583 $ 9,248 $ 1,728 $ 4,850 $ 5,834 $ 82,243 Statements of Operations by segment are presented in the following tables. Three Months Ended September 30, 2020 CNA Financial Boardwalk Pipelines Loews Hotels &amp; Co Corporate Total (In millions) Revenues: Insurance premiums $ 1,953 $ 1,953 Net investment income 517 $ 23 540 Investment gains 46 46 Non-insurance warranty revenue 317 317 Operating revenues and other 7 $ 289 $ 60 253 609 Total 2,840 289 60 276 3,465 Expenses: Insurance claims and policyholders benefits 1,616 1,616 Amortization of deferred acquisition costs 360 360 Non-insurance warranty expense 293 293 Operating expenses and other 268 219 114 275 876 Interest 52 44 8 33 137 Total 2,589 263 122 308 3,282 Income (loss) before income tax 251 26 (62 ) (32 ) 183 Income tax (expense) benefit (36 ) (6 ) 15 6 (21 ) Net income (loss) 215 20 (47 ) (26 ) 162 Amounts attributable to noncontrolling interests (23 ) (23 ) Net income (loss) attributable to Loews Corporation $ 192 $ 20 $ (47 ) $ (26 ) $ 139 Three Months Ended September 30, 2019 CNA Financial Boardwalk Pipelines Loews Hotels &amp; Co Corporate Diamond Offshore (a) Total (In millions) Revenues: Insurance premiums $ 1,890 $ 1,890 Net investment income 487 $ 36 $ 2 525 Investment gains 8 8 Non-insurance warranty revenue 292 292 Operating revenues and other 9 $ 296 $ 156 250 249 960 Total 2,686 296 156 286 251 3,675 Expenses: Insurance claims and policyholders benefits 1,614 1,614 Amortization of deferred acquisition costs 345 345 Non-insurance warranty expense 278 278 Operating expenses and other 291 212 145 264 322 1,234 Interest 31 45 6 31 31 144 Total 2,559 257 151 295 353 3,615 Income (loss) before income tax 127 39 5 (9 ) (102 ) 60 Income tax (expense) benefit (20 ) (10 ) (2 ) 1 10 (21 ) Net income (loss) 107 29 3 (8 ) (92 ) 39 Amounts attributable to noncontrolling interests (11 ) 44 33 Net income (loss) attributable to Loews Corporation $ 96 $ 29 $ 3 $ (8 ) $ (48 ) $ 72 Nine Months Ended September 30, 2020 CNA Financial Boardwalk Pipelines Loews Hotels &amp; Co Corporate Diamond Offshore (a) Total (In millions) Revenues: Insurance premiums $ 5,672 $ 5,672 Net investment income (loss) 1,380 $ (33 ) 1,347 Investment losses (101 ) (1,211 ) (1,312 ) Non-insurance warranty revenue 926 926 Operating revenues and other 20 $ 926 $ 236 754 $ 305 2,241 Total 7,897 926 236 (490 ) 305 8,874 Expenses: Insurance claims and policyholders benefits 4,683 4,683 Amortization of deferred acquisition costs 1,046 1,046 Non-insurance warranty expense 859 859 Operating expenses and other 851 633 404 810 1,196 3,894 Interest 114 127 24 96 43 404 Total 7,553 760 428 906 1,239 10,886 Income (loss) before income tax 344 166 (192 ) (1,396 ) (934 ) (2,012 ) Income tax (expense) benefit (40 ) (43 ) 48 293 26 284 Net income (loss) 304 123 (144 ) (1,103 ) (908 ) (1,728 ) Amounts attributable to noncontrolling interests (32 ) 432 400 Net income (loss) attributable to Loews Corporation $ 272 $ 123 $ (144 ) $ (1,103 ) $ (476 ) $ (1,328 ) Nine Months Ended September 30, 2019 CNA Financial Boardwalk Pipelines Loews Hotels &amp; Co Corporate Diamond Offshore (a) Total (In millions) Revenues: Insurance premiums $ 5,517 $ 5,517 Net investment income 1,573 $ 1 $ 153 $ 6 1,733 Investment gains 41 41 Non-insurance warranty revenue 858 858 Operating revenues and other 22 $ 969 521 689 705 2,906 Total 8,011 969 522 842 711 11,055 Expenses: Insurance claims and policyholders benefits 4,323 4,323 Amortization of deferred acquisition costs 1,025 1,025 Non-insurance warranty expense 801 801 Operating expenses and other 854 616 464 740 940 3,614 Interest 120 136 16 85 92 449 Total 7,123 752 480 825 1,032 10,212 Income (loss) before income tax 888 217 42 17 (321 ) 843 Income tax (expense) benefit (161 ) (56 ) (14 ) (4 ) 52 (183 ) Net income (loss) 727 161 28 13 (269 ) 660 Amounts attributable to noncontrolling interests (77 ) 132 55 Net income (loss) attributable to Loews Corporation $ 650 $ 161 $ 28 $ 13 $ (137 ) $ 715 (a) Amounts presented for Diamond Offshore reflect the periods prior to the deconsolidation.