Quarterly report pursuant to Section 13 or 15(d)

Segment Information (Details)

v3.21.2
Segment Information (Details)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
segment
Sep. 30, 2020
USD ($)
Segment Reporting [Abstract]        
Number of operating segments | segment     2  
Segment Reporting Information [Line Items]        
Total revenues $ 32,406 $ 29,090 $ 93,414 $ 82,827
Earnings from operations 545 861 1,181 3,067
Eliminations        
Segment Reporting Information [Line Items]        
Total revenues (3,210) (2,700) (9,221) (7,953)
Managed Care        
Segment Reporting Information [Line Items]        
Total revenues 30,889 28,016 89,082 79,577
Earnings from operations 699 888 1,240 3,014
Managed Care | Operating Segments        
Segment Reporting Information [Line Items]        
Total revenues 30,888 28,014 89,078 79,573
Managed Care | Eliminations        
Segment Reporting Information [Line Items]        
Total revenues 1 2 4 4
Specialty Services        
Segment Reporting Information [Line Items]        
Total revenues 4,727 3,774 13,553 11,203
Earnings from operations (154) (27) (59) 53
Specialty Services | Operating Segments        
Segment Reporting Information [Line Items]        
Total revenues 1,518 1,076 4,336 3,254
Specialty Services | Eliminations        
Segment Reporting Information [Line Items]        
Total revenues $ 3,209 $ 2,698 $ 9,217 $ 7,949