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CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Revenues: |  |  |  |
Net premiums | $ 2,825 | $ 2,809 | $ 8,434 | $ 8,311
Investment income, net of related expenses | 654 | 679 | 1,893 | 1,843
Investment related gains (losses), net: |  |  |  |
Impairments and change in allowance for credit losses on fixed maturity securities | 13 | (9) | (21) | (18)
Other investment related gains (losses), net | 53 | 58 | (117) | 87
Total investment related gains (losses), net | 66 | 49 | (138) | 69
Other revenues | 98 | 91 | 264 | 292
Total revenues | 3,643 | 3,628 | 10,453 | 10,515
Benefits and Expenses: |  |  |  |
Claims and other policy benefits | 2,530 | 2,470 | 7,894 | 7,494
Interest credited | 196 | 226 | 529 | 517
Policy acquisition costs and other insurance expenses | 374 | 322 | 912 | 894
Other operating expenses | 211 | 210 | 594 | 634
Interest expense | 43 | 46 | 126 | 129
Collateral finance and securitization expense | 4 | 7 | 14 | 23
Total benefits and expenses | 3,358 | 3,281 | 10,069 | 9,691
Income before income taxes | 285 | 347 | 384 | 824
Provision for income taxes | 72 | 84 | 101 | 189
Net income | $ 213 | $ 263 | $ 283 | $ 635
Earnings per share: |  |  |  |
Basic earnings per share | $ 3.13 | $ 4.19 | $ 4.39 | $ 10.13
Diluted earnings per share | $ 3.12 | $ 4.12 | $ 4.36 | $ 9.93

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