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v3.19.3.a.u2

Condensed Unaudited Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums earned | $ 7,935 | $ 8,327 | $ 7,891 | $ 7,137 | $ 7,465 | $ 7,908 | $ 7,664 | $ 7,027 | $ 31,290 | $ 30,064 | $ 29,034
Net Investment Income | 858 | 873 | 859 | 836 | 848 | 823 | 828 | 806 | 3,426 | 3,305 | 3,125
Net Realized Gains Losses | (55) | (155) | (223) | (97) | (687) | 19 | 18 | (2) | (530) | (652) | 84
Total revenues | 8,738 | 9,045 | 8,527 | 7,876 | 7,626 | 8,750 | 8,510 | 7,831 | 34,186 | 32,717 | 32,243
Losses and loss expenses | 4,865 | 5,052 | 4,715 | 4,098 | 4,610 | 4,868 | 4,487 | 4,102 | 18,730 | 18,067 | 18,454
Policy benefits | 225 | 158 | 161 | 196 | 162 | 127 | 150 | 151 | 740 | 590 | 676
Net income | $ 1,173 | $ 1,091 | $ 1,150 | $ 1,040 | $ 355 | $ 1,231 | $ 1,294 | $ 1,082 | $ 4,454 | $ 3,962 | $ 3,861
Basic earnings per share | $ 2.59 | $ 2.40 | $ 2.52 | $ 2.27 | $ 0.77 | $ 2.66 | $ 2.78 | $ 2.32 | $ 9.77 | $ 8.55 | $ 8.26
Diluted earnings per share | $ 2.57 | $ 2.38 | $ 2.50 | $ 2.25 | $ 0.76 | $ 2.64 | $ 2.76 | $ 2.30 | $ 9.71 | $ 8.49 | $ 8.19

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