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CONSOLIDATED STATEMENTS OF INCOME - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Revenue:    
Premium revenue $ 9,504 $ 7,885
Premium tax revenue 297 172
Investment income 108 71
Other revenue 22 21
Total revenue 9,931 8,149
Operating expenses:    
Medical care costs 8,414 6,871
General and administrative expenses 711 591
Premium tax expenses 297 172
Depreciation and amortization 45 44
Other 38 16
Total operating expenses 9,505 7,694
Operating income 426 455
Interest expense 27 28
Income before income tax expense 399 427
Income tax expense 98 106
Net income $ 301 $ 321
Net income per share:    
Net income per share - Basic (in dollars per share) $ 5.21 $ 5.58
Net income per share - Diluted (in dollars per share) $ 5.17 $ 5.52