XML 116 R96.htm IDEA: XBRL DOCUMENT v3.20.4
Segments - Reconciliation of Gross Margin to Consolidated Income (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Segment Reporting Information [Line Items]      
Total margin $ 2,479 $ 2,303 $ 2,518
Add: Other operating revenues 19,423 16,829 18,890
Less: Other operating expenses (18,345) (15,785) (17,759)
Operating income 1,078 1,044 1,131
Less: other expenses, net 117 72 132
Income before income tax expense 961 972 999
Health Plans      
Segment Reporting Information [Line Items]      
Add: Other operating revenues 19,415 16,815 18,471
Other      
Segment Reporting Information [Line Items]      
Total margin 0 0 43
Add: Other operating revenues 8 14 419
Operating Segments      
Segment Reporting Information [Line Items]      
Total margin 2,479 2,303 2,518
Operating Segments | Health Plans      
Segment Reporting Information [Line Items]      
Total margin 2,479 2,303 2,475
Operating Segments | Other      
Segment Reporting Information [Line Items]      
Total margin 0 0 43
Other Operating      
Segment Reporting Information [Line Items]      
Add: Other operating revenues 1,124 621 871
Less: Other operating expenses $ (2,525) $ (1,880) $ (2,258)