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Consolidated Statements of Earnings (USD $) In Millions, except Share data in Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012
Revenues: |  |
Premiums, principally supplemental health insurance | $ 5,184 | $ 5,378
Net investment income | 833 | 882
Realized investment gains (losses): |  |
Other-than-temporary impairment losses realized | (55) | (203)
Sales and redemptions | 119 | 78
Derivative and other gains (losses) | 92 | 80
Total realized investment gains (losses) | 156 | (45)
Other income | 35 | 25
Total revenues | 6,208 | 6,240
Benefits and expenses: |  |
Benefits and claims | 3,521 | 3,646
Acquisition and operating expenses: |  |
Amortization of deferred policy acquisition costs | 283 | 287
Insurance commissions | 392 | 435
Insurance expenses | 534 | 564
Interest expense | 71 | 57
Other operating expenses | 46 | 49
Total acquisition and operating expenses | 1,326 | 1,392
Total benefits and expenses | 4,847 | 5,038
Earnings before income taxes | 1,361 | 1,202
Income taxes | 469 | 417
Net earnings | $ 892 | $ 785
Net earnings per share: |  |
Basic | $ 1.91 | $ 1.68
Diluted | $ 1.90 | $ 1.68
Weighted-average outstanding common shares used in computing earnings per share (In thousands): |  |
Basic | 466,462 | 465,887
Diluted | 469,124 | 468,533
Cash dividends per share | $ 0.35 | $ 0.33

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