Quarterly report pursuant to Section 13 or 15(d)

Segment Information (Details)

v3.21.2
Segment Information (Details)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
USD ($)
Jun. 30, 2020
USD ($)
Jun. 30, 2021
USD ($)
segment
Jun. 30, 2020
USD ($)
Segment Reporting [Abstract]        
Number of operating segments | segment     2  
Segment Reporting Information [Line Items]        
Total revenues $ 31,025 $ 27,712 $ 61,008 $ 53,737
Earnings from operations (418) 2,018 636 2,206
Eliminations        
Segment Reporting Information [Line Items]        
Total revenues (3,124) (2,715) (6,011) (5,253)
Managed Care        
Segment Reporting Information [Line Items]        
Total revenues 29,590 26,624 58,193 51,561
Earnings from operations (415) 1,909 541 2,126
Managed Care | Operating Segments        
Segment Reporting Information [Line Items]        
Total revenues 29,588 26,623 58,190 51,559
Managed Care | Eliminations        
Segment Reporting Information [Line Items]        
Total revenues 2 1 3 2
Specialty Services        
Segment Reporting Information [Line Items]        
Total revenues 4,559 3,803 8,826 7,429
Earnings from operations (3) 109 95 80
Specialty Services | Operating Segments        
Segment Reporting Information [Line Items]        
Total revenues 1,437 1,089 2,818 2,178
Specialty Services | Eliminations        
Segment Reporting Information [Line Items]        
Total revenues $ 3,122 $ 2,714 $ 6,008 $ 5,251