Revenue excluding net investment income and realized investment results.

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Amount, after premiums ceded to other entities and premiums assumed by the entity, of premiums earned.

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- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Segment Information - Revenue from External Customers (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Premiums	$ 9,859	$ 9,156	$ 19,671	$ 21,892
Total revenues from external customers	71,396	66,942	139,688	132,206
Pharmacy revenues
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Revenue from contract with customer	57,172	53,649	111,209	102,282
Service
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Revenue from contract with customer	4,365	4,137	8,808	8,032
Service, Fees And Other Revenues [Member]
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Revenue from contract with customer	4,365	4,137	8,808	8,032
Other revenue
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Revenue from contract with customer	315	114	474	276
Evernorth Health Services
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total revenues from external customers	61,077	57,486	119,283	109,488
Cigna Healthcare
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total revenues from external customers	10,268	9,358	20,307	22,526
Other Operations
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total revenues from external customers	51	98	98	192
Operating Segments \| Evernorth Health Services \| Pharmacy revenues
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Revenue from contract with customer	57,490	53,989	111,784	104,215
Operating Segments \| Evernorth Health Services \| Network revenues
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Revenue from contract with customer	33,326	30,582	64,406	58,794
Operating Segments \| Evernorth Health Services \| Home delivery and specialty revenues
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Revenue from contract with customer	20,444	19,974	40,232	38,911
Operating Segments \| Evernorth Health Services \| Other revenues
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Revenue from contract with customer	3,720	3,433	7,146	6,510
Operating Segments \| Evernorth Health Services \| Service, Fees And Other Revenues [Member]
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Revenue from contract with customer	3,959	3,805	8,082	7,229
Operating Segments \| Cigna Healthcare
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Premiums	9,656	8,992	19,261	21,620
Operating Segments \| Cigna Healthcare \| Service, Fees And Other Revenues [Member]
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Revenue from contract with customer	2,007	1,679	3,753	3,450
Operating Segments \| Cigna Healthcare \| U.S. Healthcare
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Premiums	8,512	7,966	17,004	19,616
Operating Segments \| Cigna Healthcare \| U.S. Healthcare \| Employer insured
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Premiums	4,989	4,684	9,985	9,372
Operating Segments \| Cigna Healthcare \| U.S. Healthcare \| Medicare Advantage
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Premiums	0	0	0	2,363
Operating Segments \| Cigna Healthcare \| U.S. Healthcare \| Stop loss
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Premiums	2,138	1,879	4,254	3,747
Operating Segments \| Cigna Healthcare \| U.S. Healthcare \| Individual and Family Plans
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Premiums	860	941	1,733	1,800
Operating Segments \| Cigna Healthcare \| U.S. Healthcare \| Other
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Premiums	525	462	1,032	2,334
Operating Segments \| Cigna Healthcare \| International Health
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Premiums	1,144	1,026	2,257	2,004
Operating Segments \| Other Operations
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Premiums	55	78	108	159
Operating Segments \| Other Operations \| Pharmacy revenues
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Revenue from contract with customer	0	14	0	27
Operating Segments \| Other Operations \| Service, Fees And Other Revenues [Member]
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Revenue from contract with customer	3	19	0	31
Corporate and Eliminations
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Premiums	148	86	302	113
Corporate and Eliminations \| Pharmacy revenues
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Revenue from contract with customer	(318)	(354)	(575)	(1,960)
Corporate and Eliminations \| Service, Fees And Other Revenues [Member]
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Revenue from contract with customer	(1,604)	(1,366)	(3,027)	(2,678)
Corporate
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total revenues from external customers	0	0	0	0
Intersegment Eliminations
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total revenues from external customers	(1,774)	(1,634)	(3,300)	(4,525)
Intersegment Eliminations \| Evernorth Health Services
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total revenues from external customers	(372)	(308)	(583)	(1,956)
Intersegment Eliminations \| Cigna Healthcare
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total revenues from external customers	(1,395)	(1,313)	(2,707)	(2,544)
Intersegment Eliminations \| Other Operations
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total revenues from external customers	$ (7)	$ (13)	$ (10)	$ (25)