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Segments (Tables)
6 Months Ended
Jun. 30, 2020
Segment Reporting [Abstract]  
Operating Segment Information
The following table presents total revenue by segment. Inter-segment revenue was insignificant for all periods presented.
Three Months Ended June 30,Six Months Ended June 30,
2020201920202019
(In millions)
Total revenue:
Health Plans$4,616  $4,190  $9,161  $8,307  
Other    
Consolidated$4,618  $4,193  $9,167  $8,312  
The following table reconciles margin to consolidated income before income taxes:
Three Months Ended June 30,Six Months Ended June 30,
2020201920202019
(In millions)
Margin:
Health Plans$774  $583  $1,362  $1,164  
Add: other operating revenues (1)
246  144  491  311  
Less: other operating expenses (2)
(596) (462) (1,155) (930) 
Operating income424  265  698  545  
Other expenses, net29   50  28  
Income before income tax expense$395  $257  $648  $517  
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(1)Other operating revenues include premium tax revenue, health insurer fees reimbursed, and investment income and other revenue.
(2)Other operating expenses include general and administrative expenses, premium tax expenses, health insurer fees, depreciation and amortization, and other costs.