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Percentage of policyholder account balance representing contract with guaranteed interest rates of 3%-4%.

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Policyholder Contract Balance, Percent Reinsured Externally

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Amount of cash to be paid to policyholder upon termination and surrender of long-duration contract issued by insurance entity.

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Value above guaranteed minimum crediting rate on policyholder account balance.

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Guaranteed minimum crediting rate on policyholder account balance.

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Amount of guaranteed benefit in excess of current account balance of policyholder account balance.

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Weighted-average crediting rate for liability for policyholder account balance, calculated at a point in time.

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Amount of liability due to policyholder for deposit held under long-duration contract issued by insurance entity.

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Amount due to policyholder. Includes, but is not limited to, unpaid policy dividend, retrospective refund, and undistributed earnings on participating business. Excludes future policy benefit and claim expense.

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Insurance and Contractholder Liabilities - Contractholder Deposit Funds (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024	Sep. 30, 2024	Dec. 31, 2023
Cigna Healthcare
Insurance and Contractholder Liabilities [Line Items]
Contractholder deposit funds	$ 0
Other Operations
Insurance and Contractholder Liabilities [Line Items]
Contractholder deposit funds	$ 6,132	$ 6,324	$ 6,346	$ 6,500
Contractholder deposit fund liabilities, approximate percent reinsured externally	37.00%
Weighted average crediting rate	3.26%		3.33%
Net amount at risk	$ 2,600		$ 2,900
Cash surrender value	$ 2,800		$ 2,800
Other Operations \| Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 To 0400
Insurance and Contractholder Liabilities [Line Items]
Contractholder deposit funds not reinsured externally, percent with guaranteed interest rates of 0300 to 0400	99.00%		99.00%
Contractholder deposit funds not reinsured externally	$ 3,900		$ 4,000
Other Operations \| Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 To 0400 \| Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Insurance and Contractholder Liabilities [Line Items]
Contractholder deposit funds not reinsured externally	1,200		1,100
Other Operations \| Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 To 0400 \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150
Insurance and Contractholder Liabilities [Line Items]
Contractholder deposit funds not reinsured externally	1,100		1,200
Other Operations \| Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 To 0400 \| Policyholder Account Balance, Above Guaranteed Minimum Crediting Rate, Based On Greater Of Guaranteed Minimum Cash Value Or Actual Cash Value
Insurance and Contractholder Liabilities [Line Items]
Contractholder deposit funds not reinsured externally	$ 1,600		$ 1,700
Percentage with cash values at more than 110% of guaranteed cash value	90.00%		90.00%
Other Operations \| Minimum \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150
Insurance and Contractholder Liabilities [Line Items]
Basis points above guaranteed minimum crediting rate	0.0050		0.0050
Other Operations \| Minimum \| Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 To 0400
Insurance and Contractholder Liabilities [Line Items]
Guaranteed minimum credit rating	3.00%		3.00%
Other Operations \| Maximum \| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150
Insurance and Contractholder Liabilities [Line Items]
Basis points above guaranteed minimum crediting rate	0.0150		0.0150
Other Operations \| Maximum \| Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 To 0400
Insurance and Contractholder Liabilities [Line Items]
Guaranteed minimum credit rating	4.00%		4.00%