v3.24.1.u1
Segment Information - Summarized Segment Financial Information (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Segment Reporting Information [Line Items]    
Revenues from customers $ 56,965 $ 46,240
Net investment income (loss) 290 277
TOTAL REVENUES 57,255 46,517
Net realized investment results from certain equity method investments (8) (38)
Adjusted revenues 57,247 46,479
Depreciation and amortization 741 749
Income before income taxes 79 1,601
Pre-tax adjustments to reconcile to adjusted income from operations    
(Income) loss attributable to noncontrolling interests (77) (43)
Net realized investment (gains) losses 1,828 18
Amortization of acquired intangible assets 423 459
Special items    
Integration and transaction-related costs 37 1
(Gain) loss on sale of business 19 0
Pre-tax adjusted income (loss) from operations 2,309 2,036
Evernorth Health Services    
Segment Reporting Information [Line Items]    
Revenues from customers 44,886 34,511
Cigna Healthcare    
Segment Reporting Information [Line Items]    
Revenues from customers 12,012 11,650
Other Operations    
Segment Reporting Information [Line Items]    
Revenues from customers 66 79
Operating Segments | Evernorth Health Services    
Segment Reporting Information [Line Items]    
Net investment income (loss) 59 50
TOTAL REVENUES 46,226 36,179
Net realized investment results from certain equity method investments 0 0
Adjusted revenues 46,226 36,179
Income before income taxes (436) 918
Pre-tax adjustments to reconcile to adjusted income from operations    
(Income) loss attributable to noncontrolling interests (77) (42)
Net realized investment (gains) losses 1,456 0
Amortization of acquired intangible assets 417 444
Special items    
Integration and transaction-related costs 0 0
(Gain) loss on sale of business 0  
Pre-tax adjusted income (loss) from operations 1,360 1,320
Operating Segments | Cigna Healthcare    
Segment Reporting Information [Line Items]    
Net investment income (loss) 149 143
TOTAL REVENUES 13,285 12,756
Net realized investment results from certain equity method investments (8) (38)
Adjusted revenues 13,277 12,718
Income before income taxes 943 1,077
Pre-tax adjustments to reconcile to adjusted income from operations    
(Income) loss attributable to noncontrolling interests 0 (1)
Net realized investment (gains) losses 372 24
Amortization of acquired intangible assets 6 15
Special items    
Integration and transaction-related costs 0 0
(Gain) loss on sale of business 19  
Pre-tax adjusted income (loss) from operations 1,340 1,115
Operating Segments | Other Operations    
Segment Reporting Information [Line Items]    
Net investment income (loss) 75 78
TOTAL REVENUES 166 157
Net realized investment results from certain equity method investments 0 0
Adjusted revenues 166 157
Income before income taxes 18 21
Pre-tax adjustments to reconcile to adjusted income from operations    
(Income) loss attributable to noncontrolling interests 0 0
Net realized investment (gains) losses 0 (6)
Amortization of acquired intangible assets 0 0
Special items    
Integration and transaction-related costs 0 0
(Gain) loss on sale of business 0  
Pre-tax adjusted income (loss) from operations 18 15
Corporate and Eliminations    
Segment Reporting Information [Line Items]    
Net investment income (loss) 7 6
TOTAL REVENUES (2,422) (2,575)
Net realized investment results from certain equity method investments 0 0
Adjusted revenues (2,422) (2,575)
Income before income taxes (446) (415)
Special items    
Pre-tax adjusted income (loss) from operations (409) (414)
Corporate    
Segment Reporting Information [Line Items]    
Revenues from customers 1 0
Pre-tax adjustments to reconcile to adjusted income from operations    
(Income) loss attributable to noncontrolling interests 0 0
Net realized investment (gains) losses 0 0
Amortization of acquired intangible assets 0 0
Special items    
Integration and transaction-related costs 37 1
(Gain) loss on sale of business 0  
Intersegment Eliminations    
Segment Reporting Information [Line Items]    
Revenues from customers (2,430) (2,581)
Intersegment Eliminations | Evernorth Health Services    
Segment Reporting Information [Line Items]    
Revenues from customers (1,281) (1,618)
Intersegment Eliminations | Cigna Healthcare    
Segment Reporting Information [Line Items]    
Revenues from customers (1,124) (963)
Intersegment Eliminations | Other Operations    
Segment Reporting Information [Line Items]    
Revenues from customers $ (25) $ 0