Summary of Significant Accounting Policies (Policies)	9 Months Ended
Sep. 30, 2023
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The Consolidated Financial Statements include the accounts of The Cigna Group and its consolidated subsidiaries. Intercompany transactions and accounts have been eliminated in consolidation. These Consolidated Financial Statements were prepared in conformity with accounting principles generally accepted in the United States of America ("GAAP"). Certain amounts in prior years related to the adoption of Targeted Improvements for the Accounting of Long-Duration Contracts, have been reclassified to conform to the current year presentation. See "Recent Accounting Pronouncements" below. Amounts recorded in the Consolidated Financial Statements necessarily reflect management's estimates and assumptions about medical costs, investment and receivable valuations, interest rates and other factors. Significant estimates are discussed throughout these Notes; however, actual results could differ from those estimates. The impact of a change in estimate is generally included in earnings in the period of adjustment. These interim Consolidated Financial Statements are unaudited but include all adjustments (including normal recurring adjustments) necessary, in the opinion of management, for a fair statement of financial position and results of operations for the periods reported. The interim Consolidated Financial Statements and Notes should be read in conjunction with the Consolidated Financial Statements and Notes included in the 2022 Annual Report on Form 10-K ("2022 Form 10-K"). The preparation of interim Consolidated Financial Statements necessarily relies heavily on estimates. This and other factors, including the seasonal nature of portions of the health care and related benefits business, as well as competitive and other market conditions, call for caution in estimating full-year results based on interim results of operations.
Recent Accounting Pronouncements, Recently Adopted Accounting Guidance and Accounting Guidance Not Yet Adopted	Recent Accounting Pronouncements The Company's 2022 Form 10-K includes discussion of significant recent accounting pronouncements that either have impacted or may impact our financial statements in the future. The following information provides updates on recently adopted accounting pronouncements that have occurred since the Company filed its 2022 Form 10-K. There are no significant accounting pronouncements not yet adopted as of September 30, 2023. Targeted Improvements to the Accounting for Long-Duration Contracts ("LDTI"), Accounting Standards Update ("ASU") 2018-12 and related amendments The Cigna Group adopted LDTI January 1, 2023, which includes the following key provisions: •Changes to the measurement of the future policy benefits liability for traditional and limited-pay insurance contracts: •Assumptions used to measure cash flows (such as mortality, morbidity and lapse assumptions) are updated at least annually with the effect of changes in those assumptions remeasured retrospectively and reflected in current period net income. •Discount rate assumptions are updated quarterly based on market-level yields for low credit risk fixed income instruments ("upper-medium grade fixed income instrument"), with any changes reflected in other comprehensive income. The upper-medium grade fixed income instrument yield is interpreted to mean A-rated. •Deferred policy acquisition costs ("DAC") related to long-duration insurance contracts are amortized on a constant-level basis over the expected term of the related contracts. Other related deferred or capitalized balances (such as unearned revenue liability and value of business acquired) may use this simplified amortization method. •Market risk benefits ("MRB"), defined as protecting the contractholder from other-than-nominal capital market risk and exposing the insurer to that risk, are measured at fair value, with changes in fair value recognized in net income each period, except for the effect of the Company's change in nonperformance risk (own credit risk), which is recognized in other comprehensive income. •Additional disclosures, including disaggregated roll forwards for the liability for future policy benefits, market risk benefits, separate account liabilities and DAC, as well as information about significant inputs, judgments, assumptions and methods used in measurement. •The transition methods applied at adoption were: •The liability for future policy benefits was remeasured using a modified retrospective approach applied to all outstanding contracts as of the beginning of the earliest period presented and was recognized in the opening balance of retained earnings. The impact of remeasuring the future policy benefits liability for the discount rate was recorded through accumulated other comprehensive income. •DAC followed the transition method used for future policyholder benefits. •Market risk benefits were remeasured at fair value at the beginning of the earliest period presented. The difference between this fair value and carrying value was recognized in the opening balance of retained earnings, excluding the effect of the Company's change in nonperformance risk (own credit risk), which is recognized in accumulated other comprehensive income. Effects of adoption: •The new guidance applies to our long-duration insurance products predominantly within the Cigna Healthcare segment and Other Operations. •The cumulative effects of adopting the new standard were immaterial. The impacts were a decrease to January 1, 2021 Shareholders' equity of $139 million and an increase to Shareholders' net income for the year ended December 31, 2022 and December 31, 2021 of $36 million and $5 million, respectively. The corresponding impact to diluted earnings per share was an increase of $0.11 and $0.02 for the year ended December 31, 2022 and December 31, 2021, respectively. •The prior periods within our Consolidated Statements of Income, Consolidated Statements of Comprehensive Income, Consolidated Balance Sheets, Consolidated Statements of Changes in Total Equity and Consolidated Statements of Cash Flows were restated to conform to the current presentation. •Prior period balances in the Company's footnote disclosures have been updated to reflect adjustments resulting from the adoption of this standard. Refer to Note 9 to the Consolidated Financial Statements for the Company's updated accounting policies. •It is possible that our income recognition pattern could change on a prospective basis for several reasons: •Applying periodic assumption updates, versus the locked-in model, may change our timing of profit or loss recognition. •DAC amortization is on a constant level basis over the expected term of the related contracts and no longer tied to the emergence of profit on such contracts. Additionally, in December 2022, the Financial Accounting Standards Board ("FASB") published ASU 2022-05, which simplified the retrospective adoption of LDTI by permitting companies to make an accounting policy election to exclude contracts that are sold and removed from the balance sheet prior to the effective date of the standard from the retrospective adoption of LDTI. The Cigna Group made this policy election for the contracts sold in the Chubb transaction and our divested interest in a joint venture in Türkiye.
Revenue Recognition	Evernorth Health Services may also provide certain financial and performance guarantees, including a minimum level of discounts a client may receive, generic utilization rates and various service levels. Clients may be entitled to receive compensation if we fail to meet the guarantees. Actual performance is compared to the contractual guarantee for each measure throughout the period and the Company defers revenue for any estimated payouts within Accrued expenses and other liabilities (current). These estimates are adjusted and paid following the end of the annual guarantee period.
Accounts Receivable	the Company entered into an uncommitted factoring facility (the "Facility") under which certain accounts receivable may be sold on a non-recourse basis to a financial institutionThe transactions under the Facility are accounted for as a sale and recorded as a reduction to accounts receivable in the Consolidated Balance Sheets because control of, and risk related to, the accounts receivable are transferred to the financial institutionAmounts associated with this Facility are reflected within Net cash provided by operating activities in the Company's Consolidated Statements of Cash Flows. Factoring fees paid under this Facility are reflected in Interest expense and other in the Consolidated Statements of Income.amounts received from manufacturers but not yet remitted to the financial institution. Such amounts are recorded within Accrued expenses and other liabilities on the Consolidated Balance Sheets.
Unpaid Claims and Claims Expenses	This liability reflects estimates of the ultimate cost of claims that have been incurred but not reported, including expected development on reported claims, those that have been reported but not yet paid (reported claims in process) and other medical care expenses and services payable that are primarily comprised of accruals for incentives and other amounts payable to health care professionals and facilities.
Future Policy Benefits	Accounting Policy. Future policy benefits represent the present value of estimated future obligations, estimated using actuarial methods, for long-duration insurance policies and annuity products currently in force, consisting primarily of reserves for annuity contracts, life insurance benefits, and certain supplemental health products that are guaranteed renewable beyond one year. Contracts are grouped at a level no higher than issue year, based on the original contract issue date, and at lower levels of disaggregation within each issue year for certain businesses to reflect factors including product type, plan type and currency. Management estimates these obligations based on assumptions for premiums, interest rates, mortality or morbidity, future claim adjudication expenses and surrenders. Mortality, morbidity and surrender assumptions are based on the Company's own experience and published actuarial tables, and are updated at least annually, to the extent changes in circumstances require. Interest rate assumptions are based on market-level yields for low credit risk fixed income instruments ("upper-medium grade fixed income instrument"). For interest accretion purposes, interest rates are fixed at the year of the cohort's inception, however for purposes of liability measurement, are updated to the current rate quarterly, with all changes in the interest rate from inception to current period reported through Accumulated other comprehensive loss. For contracts issued domestically, we use observable inputs from a published spot rate curve for terms up to 30 years and extrapolate for longer terms using a constant forward rate approach. For contracts issued by foreign operating entities with functional currencies other than the U.S. dollar, we use observable inputs to approximate a risk free rate and add a credit spread adjustment to align with a low credit risk fixed income instrument. For terms beyond the last observable risk free rates, which vary by international market, we extrapolate to the ultimate forward rate assuming a constant credit spread. For the annuity business, the premium paying period is shorter than the benefit coverage period, and a deferred profit liability ("DPL") is reported in future policy benefits representing gross premium received in excess of net premiums. DPL is amortized based on expected future benefit payments.
Contractholder Deposit Funds	Accounting Policy. Liabilities for contractholder deposit funds primarily include deposits received from customers for investment-related and universal life products as well as investment earnings on their fund balances in Other Operations. These liabilities are adjusted to reflect administrative charges and, for universal life fund balances, mortality charges. Interest credited on these funds is accrued ratably over the contract period.
Market Risk Benefits	Accounting Policy. Variable annuity reinsurance liabilities are measured as MRBs at fair value, net of nonperformance risk, with fluctuations in value gross of reinsurer nonperformance risk reported in benefit expenses while fluctuations in the Company's own nonperformance risk (own credit risk) are reported in Accumulated other comprehensive loss. Nonperformance risk reflects risk that a party might default and therefore not fulfill its obligations (i.e. nonpayment risk). The nonperformance risk adjustment reflects a market participant's view of nonpayment risk by adding an additional spread to the discount rate in the calculation of both (a) the variable annuity reinsurance liabilities to be paid by the Company and (b) the variable annuity reinsurance assets to be paid by the reinsurers, after considering collateral. The Company classifies variable annuity assets and liabilities in Level 3 of the fair value hierarchy described in Note 12 to the Consolidated Financial Statements because assumptions related to future annuitant behavior are largely unobservable. As discussed further in Note 10 to the Consolidated Financial Statements, due to the reinsurance agreements covering these liabilities, the liabilities do not generally impact net income except for the change in nonperformance risk on the reinsurance recoverable, which is reported in benefit expenses and does not offset the nonperformance risk valuation on the liability. Variable annuity liabilities are established using capital market assumptions and assumptions related to future annuitant behavior (including mortality, lapse and annuity election rates).
Reinsurance	Reinsurance and other amounts recoverable reflect amounts due from reinsurers and policyholders to cover incurred but not reported and pending claims of certain business for which the Company administers the plan benefits without any right of offset. See Note 10 to the Consolidated Financial Statements for additional information on reinsuranceThe Company's insurance subsidiaries enter into agreements with other insurance companies to limit losses from large exposures and to permit recovery of a portion of incurred losses. Reinsurance is ceded primarily in acquisition and disposition transactions when the underwriting company is not being acquired. Reinsurance does not relieve the originating insurer of liability. Therefore, reinsured liabilities must continue to be reported along with the related reinsurance recoverables. The Company regularly evaluates the financial condition of its reinsurers and monitors concentrations of its credit risk.The Company reviews its reinsurance arrangements and establishes reserves against the recoverables primarily for expected credit losses.Collateral levels are defined internally based on the fair value of the collateral relative to the carrying amount of the reinsurance recoverable, the frequency at which collateral is required to be replenished and the potential for volatility in the collateral's fair value.Variable annuity contracts are accounted for as assumed and ceded reinsurance and categorized as market risk benefits as discussed in Note 9 to the Consolidated Financial Statements.
Investments	Cigna Group's investment portfolio consists of a broad range of investments including debt securities, equity securities, commercial mortgage loans, policy loans, other long-term investments, short-term investments and derivative financial instruments.Further information about our accounting policies for investment assets can be found in Note 11 in the Company's 2022 Form 10-K.Accounting policy. Our accounting policy for debt securities (including bonds, mortgage and other asset-backed securities and preferred stocks redeemable by the investor) remains materially consistent with the policy disclosed in the Company's 2022 Form 10-K. However, with the adoption of amended accounting guidance for long-duration insurance contracts on January 1, 2023 (discussed in Note 2 to the Consolidated Financial Statements), net unrealized appreciation on debt securities supporting the Company's run-off settlement annuity business is no longer reported in Non-current insurance and contractholder liabilities but rather is reported in Accumulated other comprehensive loss. Review of declines in fair value. Management reviews impaired debt securities to determine whether a credit loss allowance is needed based on criteria that include: •severity of decline; •financial health and specific prospects of the issuer; and •changes in the regulatory, economic or general market environment of the issuer's industry or geographic region. Mortgage loans held by the Company are made exclusively to commercial borrowers and are diversified by property type, location and borrower. Loans are generally issued at fixed rates of interest and are secured by high quality, primarily completed and substantially leased operating properties.The Company regularly evaluates and monitors credit risk from the initial mortgage loan underwriting and throughout the investment holding period. For more information on the Company's accounting policies and methodologies regarding these investments, see Note 11 in the Company's 2022 Form 10-K.Other long-term investments include investments in unconsolidated entities, including certain limited partnerships and limited liability companies holding real estate, securities or loans. These investments are carried at cost plus the Company's ownership percentage of reporting income or loss, based on the financial statements of the underlying investments that are generally reported at fair value. Income or loss from these investments is reported on a one quarter lag due to the timing of when financial information is received from the general partner or manager of the investments. Other long-term investments also include investment real estate carried at depreciated cost less any impairment write-downs to fair value when cash flows indicate that the carrying value may not be recoverable. Additionally, statutory and other restricted deposits and foreign currency swaps carried at fair value are reported in the table below as Other. Accounting policy. Realized investment gains and losses are based on specifically identified assets and result from sales, investment asset write-downs, change in the fair value of certain derivatives and equity securities and changes in allowances for credit losses on debt securities and commercial mortgage loan investments. With the adoption of amended accounting guidance for long-duration insurance contracts on January 1, 2023 (discussed in Note 2 to the Consolidated Financial Statements), realized investment gains and losses no longer exclude amounts that were previously required to adjust future policy benefits for the run-off settlement annuity business. Prior period net realized investment losses have been updated to reflect the impact of adopting LDTI.
Derivative Financial Instruments	The Company uses derivative financial instruments to manage the characteristics of investment assets (such as duration, yield, currency and liquidity) to meet the varying demands of the related insurance and contractholder liabilities. The Company also uses derivative financial instruments to hedge the risk of changes in the net assets of certain of its foreign subsidiaries due to changes in foreign currency exchange rates and to hedge the interest rate risk of certain long-term debt.Please refer to the Company's 2022 Form 10-K for further discussion of the types of derivative financial instruments and associated accounting policies.
Fair Value Measurements	The Company carries certain financial instruments at fair value in the financial statements including debt securities, certain equity securities, short-term investments and derivatives. Other financial instruments are measured at fair value only under certain conditions, such as when impaired or when there are observable price changes for equity securities with no readily determinable fair value. Fair value is defined as the price at which an asset could be exchanged in an orderly transaction between market participants at the balance sheet date. A liability's fair value is defined as the amount that would be paid to transfer the liability to a market participant, not the amount that would be paid to settle the liability with the creditor. The Company's financial assets and liabilities carried at fair value have been classified based upon a hierarchy defined by GAAP. The hierarchy gives the highest ranking to fair values determined using unadjusted quoted prices in active markets for identical assets and liabilities (Level 1) and the lowest ranking to fair values determined using methodologies and models with unobservable inputs (Level 3). An asset's or a liability's classification is based on the lowest level of input that is significant to its measurement. For example, a financial asset or liability carried at fair value would be classified in Level 3 if unobservable inputs were significant to the instrument's fair value, even though the measurement may be derived using inputs that are both observable (Levels 1 and 2) and unobservable (Level 3). For a description of the policies, methods and assumptions that are used to estimate fair value and determine the fair value hierarchy for each class of financial instruments, see Note 12 in the Company's 2022 Form 10-K. Level 3 Financial Assets and Financial Liabilities Certain inputs for instruments classified in Level 3 are unobservable (supported by little or no market activity) and significant to their resulting fair value measurement. Unobservable inputs reflect the Company's best estimate of what hypothetical market participants would use to determine a transaction price for the asset or liability at the reporting date. Additionally, as discussed in Note 9E to the Consolidated Financial Statements, the Company classifies variable annuity assets and liabilities in Level 3 of the fair value hierarchy. Quantitative Information about Unobservable InputsThe significant unobservable input used to value our corporate and government debt securities and mortgage and other asset-backed securities is an adjustment for liquidity. This adjustment is needed to reflect current market conditions and issuer circumstances when there is limited trading activity for the security. Total gains and losses included in Shareholders' net income in the tables above are reflected in the Consolidated Statements of Income as Net realized investment losses and Net investment income. Gains and losses included in Other comprehensive (loss) income, net of tax in the tables above are reflected in Net unrealized (depreciation) appreciation on securities and derivatives in the Consolidated Statements of Comprehensive Income. Transfers into or out of the Level 3 category occur when unobservable inputs, such as the Company's best estimate of what a market participant would use to determine a current transaction price, become more or less significant to the fair value measurement. Market activity typically decreases during periods of economic uncertainty and this decrease in activity reduces the availability of market observable data. As a result, the level of unobservable judgment that must be applied to the pricing of certain instruments increases and is typically observed through the widening of liquidity spreadsAssets and Liabilities Measured at Fair Value under Certain ConditionsSome financial assets and liabilities are not carried at fair value, such as commercial mortgage loans that are carried at unpaid principal, investment real estate that is carried at depreciated cost and equity securities with no readily determinable fair value when there are no observable market transactions. However, these financial assets and liabilities may be measured using fair value under certain conditions, such as when investments become impaired and are written down to their fair value, or when there are observable price changes from orderly market transactions of equity securities that otherwise had no readily determinable fair value.
Separate Accounts	Separate Accounts The investment income and fair value gains and losses of Separate account assets generally accrue directly to the contractholders and, together with their deposits and withdrawals, are excluded from the Company's Consolidated Statements of Income and Cash Flows. The separate account activity for the nine months ended September 30, 2023 and 2022 was primarily driven by changes in the market values of the underlying separate account investments. Separate account assets classified in Level 3 primarily support the Company's pension plans and include certain newly-issued, privately-placed, complex or illiquid securities that are priced using methods discussed above, as well as commercial mortgage loans. Separate account investments in securities partnerships, real estate and hedge funds are generally valued based on the separate account's ownership share of the equity of the investee (NAV as a practical expedient), including changes in the fair values of its underlying investments
Variable Interest Entities	For details of our accounting policy for variable interest entities and the composition of variable interest entities with which the Company is involved, refer to Note 13 in the Company's 2022 Form 10-K.
AOCI	Generally, tax effects in AOCI are established at the currently enacted tax rate and reclassified to Shareholders' net income in the same period that the related pre-tax AOCI reclassifications are recognized.
Guarantees	Financial Guarantees: Retiree and Life Insurance BenefitsThe Company guarantees that separate account assets will be sufficient to pay certain life insurance or retiree benefits. For the majority of these benefits, the sponsoring employers are primarily responsible for ensuring that assets are sufficient to pay these benefits and are required to maintain assets that exceed a certain percentage of benefit obligations. If employers fail to do so, the Company or an affiliate of the buyer of the retirement benefits business has the right to redirect the management of the related assets to provide for benefit payments.An additional liability is established if management believes that the Company will be required to make payments under the guarantees;Separate account assets supporting these guarantees are classified in Levels 1 and 2 of the GAAP fair value hierarchy.Certain Other GuaranteesThe Company had indemnification obligations as of September 30, 2023 in connection with acquisition and disposition transactions. These indemnification obligations are triggered by the breach of representations or covenants provided by the Company, such as representations for the presentation of financial statements, filing of tax returns, compliance with law or identification of outstanding litigation. These obligations are typically subject to various time limitations, defined by the contract or by operation of law, such as statutes of limitation. In some cases, the maximum potential amount due is subject to contractual limitations based on a percentage of the transaction purchase price, while in other cases limitations are not specified or applicable. The Company does not believe that it is possible to determine the maximum potential amount due under these obligations because not all amounts due under these indemnification obligations are subject to limitation.Guaranty Fund AssessmentsThe Company operates in a regulatory environment that may require its participation in assessments under state insurance guaranty association laws. The Company's exposure to assessments for certain obligations of insolvent insurance companies to policyholders and claimants is based on its share of business written in the relevant jurisdictions.
Segment Information	Intersegment revenues primarily reflect pharmacy and care services transactions between the Evernorth Health Services and Cigna Healthcare segments.The Company uses "pre-tax adjusted income (loss) from operations" and "adjusted revenues" as its principal financial measures of segment operating performance because management believes these metrics best reflect the underlying results of business operations and permit analysis of trends in underlying revenue, expenses and profitability. We define pre-tax adjusted income from operations as income before income taxes excluding pre-tax income (loss) attributable to noncontrolling interests, net realized investment results, amortization of acquired intangible assets, and special items. The Cigna Group's share of certain realized investment results of its joint ventures reported in the Cigna Healthcare segment using the equity method of accounting are also excluded. Special items are matters that management believes are not representative of the underlying results of operations due to their nature or size. Adjusted income (loss) from operations is measured on an after-tax basis for consolidated results and on a pre-tax basis for segment results. The Company defines adjusted revenues as total revenues excluding the following adjustments: special items and The Cigna Group's share of certain realized investment results of its joint ventures reported in the Cigna Healthcare segment using the equity method of accounting. Special items are matters that management believes are not representative of the underlying results of operations due to their nature or size. We exclude these items from this measure because management believes they are not indicative of past or future underlying performance of the business.

Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2023

The Consolidated Financial Statements include the accounts of The Cigna Group and its consolidated subsidiaries. Intercompany transactions and accounts have been eliminated in consolidation. These Consolidated Financial Statements were prepared in conformity with accounting principles generally accepted in the United States of America ("GAAP"). Certain amounts in prior years related to the adoption of Targeted Improvements for the Accounting of Long-Duration Contracts, have been reclassified to conform to the current year presentation. See "Recent Accounting Pronouncements" below.

Amounts recorded in the Consolidated Financial Statements necessarily reflect management's estimates and assumptions about medical costs, investment and receivable valuations, interest rates and other factors. Significant estimates are discussed throughout these Notes; however, actual results could differ from those estimates. The impact of a change in estimate is generally included in earnings in the period of adjustment.

These interim Consolidated Financial Statements are unaudited but include all adjustments (including normal recurring adjustments) necessary, in the opinion of management, for a fair statement of financial position and results of operations for the periods reported. The interim Consolidated Financial Statements and Notes should be read in conjunction with the Consolidated Financial Statements and Notes included in the 2022 Annual Report on Form 10-K ("2022 Form 10-K"). The preparation of interim Consolidated Financial Statements necessarily relies heavily on estimates. This and other factors, including the seasonal nature of portions of the health care and related benefits business, as well as competitive and other market conditions, call for caution in estimating full-year results based on interim results of operations.

Recent Accounting Pronouncements, Recently Adopted Accounting Guidance and Accounting Guidance Not Yet Adopted

Recent Accounting Pronouncements

The Company's 2022 Form 10-K includes discussion of significant recent accounting pronouncements that either have impacted or may impact our financial statements in the future. The following information provides updates on recently adopted accounting pronouncements that have occurred since the Company filed its 2022 Form 10-K. There are no significant accounting pronouncements not yet adopted as of September 30, 2023.

Targeted Improvements to the Accounting for Long-Duration Contracts ("LDTI"), Accounting Standards Update ("ASU") 2018-12 and related amendments

The Cigna Group adopted LDTI January 1, 2023, which includes the following key provisions:

•Changes to the measurement of the future policy benefits liability for traditional and limited-pay insurance contracts:

•Assumptions used to measure cash flows (such as mortality, morbidity and lapse assumptions) are updated at least annually with the effect of changes in those assumptions remeasured retrospectively and reflected in current period net income.

•Discount rate assumptions are updated quarterly based on market-level yields for low credit risk fixed income instruments ("upper-medium grade fixed income instrument"), with any changes reflected in other comprehensive income. The upper-medium grade fixed income instrument yield is interpreted to mean A-rated.

•Deferred policy acquisition costs ("DAC") related to long-duration insurance contracts are amortized on a constant-level basis over the expected term of the related contracts. Other related deferred or capitalized balances (such as unearned revenue liability and value of business acquired) may use this simplified amortization method.

•Market risk benefits ("MRB"), defined as protecting the contractholder from other-than-nominal capital market risk and exposing the insurer to that risk, are measured at fair value, with changes in fair value recognized in net income each period, except for the effect of the Company's change in nonperformance risk (own credit risk), which is recognized in other comprehensive income.

•Additional disclosures, including disaggregated roll forwards for the liability for future policy benefits, market risk benefits, separate account liabilities and DAC, as well as information about significant inputs, judgments, assumptions and methods used in measurement.

•The transition methods applied at adoption were:

•The liability for future policy benefits was remeasured using a modified retrospective approach applied to all outstanding contracts as of the beginning of the earliest period presented and was recognized in the opening balance of retained earnings. The impact of remeasuring the future policy benefits liability for the discount rate was recorded through accumulated other comprehensive income.

•DAC followed the transition method used for future policyholder benefits.

•Market risk benefits were remeasured at fair value at the beginning of the earliest period presented. The difference between this fair value and carrying value was recognized in the opening balance of retained earnings, excluding the effect of the Company's change in nonperformance risk (own credit risk), which is recognized in accumulated other comprehensive income.

Effects of adoption:

•The new guidance applies to our long-duration insurance products predominantly within the Cigna Healthcare segment and Other Operations.

•The cumulative effects of adopting the new standard were immaterial. The impacts were a decrease to January 1, 2021 Shareholders' equity of $139 million and an increase to Shareholders' net income for the year ended December 31, 2022 and December 31, 2021 of $36 million and $5 million, respectively. The corresponding impact to diluted earnings per share was an increase of $0.11 and $0.02 for the year ended December 31, 2022 and December 31, 2021, respectively.

•The prior periods within our Consolidated Statements of Income, Consolidated Statements of Comprehensive Income, Consolidated Balance Sheets, Consolidated Statements of Changes in Total Equity and Consolidated Statements of Cash Flows were restated to conform to the current presentation.

•Prior period balances in the Company's footnote disclosures have been updated to reflect adjustments resulting from the adoption of this standard. Refer to Note 9 to the Consolidated Financial Statements for the Company's updated accounting policies.

•It is possible that our income recognition pattern could change on a prospective basis for several reasons:

•Applying periodic assumption updates, versus the locked-in model, may change our timing of profit or loss recognition.

•DAC amortization is on a constant level basis over the expected term of the related contracts and no longer tied to the emergence of profit on such contracts.

Additionally, in December 2022, the Financial Accounting Standards Board ("FASB") published ASU 2022-05, which simplified the retrospective adoption of LDTI by permitting companies to make an accounting policy election to exclude contracts that are sold and removed from the balance sheet prior to the effective date of the standard from the retrospective adoption of LDTI. The Cigna Group made this policy election for the contracts sold in the Chubb transaction and our divested interest in a joint venture in Türkiye.

Revenue Recognition

Evernorth Health Services may also provide certain financial and performance guarantees, including a minimum level of discounts a client may receive, generic utilization rates and various service levels. Clients may be entitled to receive compensation if we fail to meet the guarantees. Actual performance is compared to the contractual guarantee for each measure throughout the period and the Company defers revenue for any estimated payouts within Accrued expenses and other liabilities (current). These estimates are adjusted and paid following the end of the annual guarantee period.

Accounts Receivable

the Company entered into an uncommitted factoring facility (the "Facility") under which certain accounts receivable may be sold on a non-recourse basis to a financial institutionThe transactions under the Facility are accounted for as a sale and recorded as a reduction to accounts receivable in the Consolidated Balance Sheets because control of, and risk related to, the accounts receivable are transferred to the financial institutionAmounts associated with this Facility are reflected within Net cash provided by operating activities in the Company's Consolidated Statements of Cash Flows. Factoring fees paid under this Facility are reflected in Interest expense and other in the Consolidated Statements of Income.amounts received from manufacturers but not yet remitted to the financial institution. Such amounts are recorded within Accrued expenses and other liabilities on the Consolidated Balance Sheets.

Unpaid Claims and Claims Expenses

This liability reflects estimates of the ultimate cost of claims that have been incurred but not reported, including expected development on reported claims, those that have been reported but not yet paid (reported claims in process) and other medical care expenses and services payable that are primarily comprised of accruals for incentives and other amounts payable to health care professionals and facilities.

Future Policy Benefits

Accounting Policy. Future policy benefits represent the present value of estimated future obligations, estimated using actuarial methods, for long-duration insurance policies and annuity products currently in force, consisting primarily of reserves for annuity contracts, life insurance benefits, and certain supplemental health products that are guaranteed renewable beyond one year.

Contracts are grouped at a level no higher than issue year, based on the original contract issue date, and at lower levels of disaggregation within each issue year for certain businesses to reflect factors including product type, plan type and currency. Management estimates these obligations based on assumptions for premiums, interest rates, mortality or morbidity, future claim adjudication expenses and surrenders. Mortality, morbidity and surrender assumptions are based on the Company's own experience and published actuarial tables, and are updated at least annually, to the extent changes in circumstances require. Interest rate

assumptions are based on market-level yields for low credit risk fixed income instruments ("upper-medium grade fixed income instrument"). For interest accretion purposes, interest rates are fixed at the year of the cohort's inception, however for purposes of liability measurement, are updated to the current rate quarterly, with all changes in the interest rate from inception to current period reported through Accumulated other comprehensive loss. For contracts issued domestically, we use observable inputs from a published spot rate curve for terms up to 30 years and extrapolate for longer terms using a constant forward rate approach. For contracts issued by foreign operating entities with functional currencies other than the U.S. dollar, we use observable inputs to approximate a risk free rate and add a credit spread adjustment to align with a low credit risk fixed income instrument. For terms beyond the last observable risk free rates, which vary by international market, we extrapolate to the ultimate forward rate assuming a constant credit spread.

For the annuity business, the premium paying period is shorter than the benefit coverage period, and a deferred profit liability ("DPL") is reported in future policy benefits representing gross premium received in excess of net premiums. DPL is amortized based on expected future benefit payments.

Contractholder Deposit Funds

Accounting Policy. Liabilities for contractholder deposit funds primarily include deposits received from customers for investment-related and universal life products as well as investment earnings on their fund balances in Other Operations. These liabilities are adjusted to reflect administrative charges and, for universal life fund balances, mortality charges. Interest credited on these funds is accrued ratably over the contract period.

Market Risk Benefits

Accounting Policy. Variable annuity reinsurance liabilities are measured as MRBs at fair value, net of nonperformance risk, with fluctuations in value gross of reinsurer nonperformance risk reported in benefit expenses while fluctuations in the Company's own nonperformance risk (own credit risk) are reported in Accumulated other comprehensive loss. Nonperformance risk reflects risk that a party might default and therefore not fulfill its obligations (i.e. nonpayment risk). The nonperformance risk adjustment reflects a market participant's view of nonpayment risk by adding an additional spread to the discount rate in the calculation of both (a) the variable annuity reinsurance liabilities to be paid by the Company and (b) the variable annuity reinsurance assets to be paid by the reinsurers, after considering collateral. The Company classifies variable annuity assets and liabilities in Level 3 of the fair value hierarchy described in Note 12 to the Consolidated Financial Statements because assumptions related to future annuitant behavior are largely unobservable. As discussed further in Note 10 to the Consolidated Financial Statements, due to the reinsurance agreements covering these liabilities, the liabilities do not generally impact net income except for the change in nonperformance risk on the reinsurance recoverable, which is reported in benefit expenses and does not offset the nonperformance risk valuation on the liability. Variable annuity liabilities are established using capital market assumptions and assumptions related to future annuitant behavior (including mortality, lapse and annuity election rates).

Reinsurance

Reinsurance and other amounts recoverable reflect amounts due from reinsurers and policyholders to cover incurred but not reported and pending claims of certain business for which the Company administers the plan benefits without any right of offset. See Note 10 to the Consolidated Financial Statements for additional information on reinsuranceThe Company's insurance subsidiaries enter into agreements with other insurance companies to limit losses from large exposures and to permit recovery of a portion of incurred losses. Reinsurance is ceded primarily in acquisition and disposition transactions when the underwriting company is not being acquired. Reinsurance does not relieve the originating insurer of liability. Therefore, reinsured liabilities must continue to be reported along with the related reinsurance recoverables. The Company regularly evaluates the financial condition of its reinsurers and monitors concentrations of its credit risk.The Company reviews its reinsurance arrangements and establishes reserves against the recoverables primarily for expected credit losses.Collateral levels are defined internally based on the fair value of the collateral relative to the carrying amount of the reinsurance recoverable, the frequency at which collateral is required to be replenished and the potential for volatility in the collateral's fair value.Variable annuity contracts are accounted for as assumed and ceded reinsurance and categorized as market risk benefits as discussed in Note 9 to the Consolidated Financial Statements.

Investments

Cigna Group's investment portfolio consists of a broad range of investments including debt securities, equity securities, commercial mortgage loans, policy loans, other long-term investments, short-term investments and derivative financial instruments.Further information about our accounting policies for investment assets can be found in Note 11 in the Company's 2022 Form 10-K.Accounting policy. Our accounting policy for debt securities (including bonds, mortgage and other asset-backed securities and preferred stocks redeemable by the investor) remains materially consistent with the policy disclosed in the Company's 2022 Form 10-K. However, with the adoption of amended accounting guidance for long-duration insurance contracts on January 1, 2023 (discussed in Note 2 to the Consolidated Financial Statements), net unrealized appreciation on debt securities supporting the Company's run-off settlement annuity business is no longer reported in Non-current insurance and contractholder liabilities but rather is reported in Accumulated other comprehensive loss.

Review of declines in fair value. Management reviews impaired debt securities to determine whether a credit loss allowance is needed based on criteria that include:

•severity of decline;

•financial health and specific prospects of the issuer; and

•changes in the regulatory, economic or general market environment of the issuer's industry or geographic region.

Mortgage loans held by the Company are made exclusively to commercial borrowers and are diversified by property type, location and borrower. Loans are generally issued at fixed rates of interest and are secured by high quality, primarily completed and substantially leased operating properties.The Company regularly evaluates and monitors credit risk from the initial mortgage loan underwriting and throughout the investment holding period. For more information on the Company's accounting policies and methodologies regarding these investments, see Note 11 in the Company's 2022 Form 10-K.Other long-term investments include investments in unconsolidated entities, including certain limited partnerships and limited liability companies holding real estate, securities or loans. These investments are carried at cost plus the Company's ownership percentage of reporting income or loss, based on the financial statements of the underlying investments that are generally reported at fair value. Income or loss from these investments is reported on a one quarter lag due to the timing of when financial information is received from the general partner or manager of the investments. Other long-term investments also include investment real estate carried at depreciated cost less any impairment write-downs to fair value when cash flows indicate that the carrying value may not be recoverable. Additionally, statutory and other restricted deposits and foreign currency swaps carried at fair value are reported in the table below as Other. Accounting policy. Realized investment gains and losses are based on specifically identified assets and result from sales, investment asset write-downs, change in the fair value of certain derivatives and equity securities and changes in allowances for credit losses on debt securities and commercial mortgage loan investments. With the adoption of amended accounting guidance for long-duration insurance contracts on January 1, 2023 (discussed in Note 2 to the Consolidated Financial Statements), realized investment gains and losses no longer exclude amounts that were previously required to adjust future policy benefits for the run-off settlement annuity business. Prior period net realized investment losses have been updated to reflect the impact of adopting LDTI.

Derivative Financial Instruments

The Company uses derivative financial instruments to manage the characteristics of investment assets (such as duration, yield, currency and liquidity) to meet the varying demands of the related insurance and contractholder liabilities. The Company also uses derivative financial instruments to hedge the risk of changes in the net assets of certain of its foreign subsidiaries due to changes in foreign currency exchange rates and to hedge the interest rate risk of certain long-term debt.Please refer to the Company's 2022 Form 10-K for further discussion of the types of derivative financial instruments and associated accounting policies.

Fair Value Measurements

The Company carries certain financial instruments at fair value in the financial statements including debt securities, certain equity securities, short-term investments and derivatives. Other financial instruments are measured at fair value only under certain conditions, such as when impaired or when there are observable price changes for equity securities with no readily determinable fair value.

Fair value is defined as the price at which an asset could be exchanged in an orderly transaction between market participants at the balance sheet date. A liability's fair value is defined as the amount that would be paid to transfer the liability to a market participant, not the amount that would be paid to settle the liability with the creditor.

The Company's financial assets and liabilities carried at fair value have been classified based upon a hierarchy defined by GAAP. The hierarchy gives the highest ranking to fair values determined using unadjusted quoted prices in active markets for identical assets and liabilities (Level 1) and the lowest ranking to fair values determined using methodologies and models with unobservable inputs (Level 3). An asset's or a liability's classification is based on the lowest level of input that is significant to its measurement. For example, a financial asset or liability carried at fair value would be classified in Level 3 if unobservable inputs were significant to the instrument's fair value, even though the measurement may be derived using inputs that are both observable (Levels 1 and 2) and unobservable (Level 3).

For a description of the policies, methods and assumptions that are used to estimate fair value and determine the fair value hierarchy for each class of financial instruments, see Note 12 in the Company's 2022 Form 10-K.

Level 3 Financial Assets and Financial Liabilities

Certain inputs for instruments classified in Level 3 are unobservable (supported by little or no market activity) and significant to their resulting fair value measurement. Unobservable inputs reflect the Company's best estimate of what hypothetical market participants would use to determine a transaction price for the asset or liability at the reporting date. Additionally, as discussed in Note 9E to the Consolidated Financial Statements, the Company classifies variable annuity assets and liabilities in Level 3 of the fair value hierarchy.

Quantitative Information about Unobservable InputsThe significant unobservable input used to value our corporate and government debt securities and mortgage and other asset-backed securities is an adjustment for liquidity. This adjustment is needed to reflect current market conditions and issuer circumstances when there is limited trading activity for the security.

Total gains and losses included in Shareholders' net income in the tables above are reflected in the Consolidated Statements of Income as Net realized investment losses and Net investment income.

Gains and losses included in Other comprehensive (loss) income, net of tax in the tables above are reflected in Net unrealized (depreciation) appreciation on securities and derivatives in the Consolidated Statements of Comprehensive Income.

Transfers into or out of the Level 3 category occur when unobservable inputs, such as the Company's best estimate of what a market participant would use to determine a current transaction price, become more or less significant to the fair value measurement. Market activity typically decreases during periods of economic uncertainty and this decrease in activity reduces the availability of market observable data. As a result, the level of unobservable judgment that must be applied to the pricing of certain instruments increases and is typically observed through the widening of liquidity spreadsAssets and Liabilities Measured at Fair Value under Certain ConditionsSome financial assets and liabilities are not carried at fair value, such as commercial mortgage loans that are carried at unpaid principal, investment real estate that is carried at depreciated cost and equity securities with no readily determinable fair value when there are no observable market transactions. However, these financial assets and liabilities may be measured using fair value under certain conditions, such as when investments become impaired and are written down to their fair value, or when there are observable price changes from orderly market transactions of equity securities that otherwise had no readily determinable fair value.

Separate Accounts

The investment income and fair value gains and losses of Separate account assets generally accrue directly to the contractholders and, together with their deposits and withdrawals, are excluded from the Company's Consolidated Statements of Income and Cash Flows. The separate account activity for the nine months ended September 30, 2023 and 2022 was primarily driven by changes in the market values of the underlying separate account investments.

Separate account assets classified in Level 3 primarily support the Company's pension plans and include certain newly-issued, privately-placed, complex or illiquid securities that are priced using methods discussed above, as well as commercial mortgage loans. Separate account investments in securities partnerships, real estate and hedge funds are generally valued based on the separate account's ownership share of the equity of the investee (NAV as a practical expedient), including changes in the fair values of its underlying investments

Variable Interest Entities

For details of our accounting policy for variable interest entities and the composition of variable interest entities with which the Company is involved, refer to Note 13 in the Company's 2022 Form 10-K.

AOCI

Generally, tax effects in AOCI are established at the currently enacted tax rate and reclassified to Shareholders' net income in the same period that the related pre-tax AOCI reclassifications are recognized.

Guarantees

Financial Guarantees: Retiree and Life Insurance BenefitsThe Company guarantees that separate account assets will be sufficient to pay certain life insurance or retiree benefits. For the majority of these benefits, the sponsoring employers are primarily responsible for ensuring that assets are sufficient to pay these benefits and are required to maintain assets that exceed a certain percentage of benefit obligations. If employers fail to do so, the Company or an affiliate of the buyer of the retirement benefits business has the right to redirect the management of the related assets to provide for benefit payments.An additional liability is established if management believes that the Company will be required to make payments under the guarantees;Separate account assets supporting these guarantees are classified in Levels 1 and 2 of the GAAP fair value hierarchy.Certain Other GuaranteesThe Company had indemnification obligations as of September 30, 2023 in connection with acquisition and disposition transactions. These indemnification obligations are triggered by the breach of representations or covenants provided by the Company, such as representations for the presentation of financial statements, filing of tax returns, compliance with law or identification of outstanding litigation. These obligations are typically subject to various time limitations, defined by the contract or by operation of law, such as statutes of limitation. In some cases, the maximum potential amount due is subject to contractual limitations based on a percentage of the transaction purchase price, while in other cases limitations are not specified or applicable. The Company does not believe that it is possible to determine the maximum potential amount due under these obligations because not all amounts due under these indemnification obligations are subject to limitation.Guaranty Fund AssessmentsThe Company operates in a regulatory environment that may require its participation in assessments under state insurance guaranty association laws. The Company's exposure to assessments for certain obligations of insolvent insurance companies to policyholders and claimants is based on its share of business written in the relevant jurisdictions.

Segment Information

Intersegment revenues primarily reflect pharmacy and care services transactions between the Evernorth Health Services and Cigna Healthcare segments.The Company uses "pre-tax adjusted income (loss) from operations" and "adjusted revenues" as its principal financial measures of segment operating performance because management believes these metrics best reflect the underlying results of business operations and permit analysis of trends in underlying revenue, expenses and profitability. We define pre-tax adjusted income from operations as income before income taxes excluding pre-tax income (loss) attributable to noncontrolling interests, net realized investment results, amortization of acquired intangible assets, and special items. The Cigna Group's share of certain realized investment results of its joint ventures reported in the Cigna Healthcare segment using the equity method of accounting are also excluded. Special items are matters that management believes are not representative of the underlying results of operations due to their nature or size. Adjusted income (loss) from operations is measured on an after-tax basis for consolidated results and on a pre-tax basis for segment results. The Company defines adjusted revenues as total revenues excluding the following adjustments: special items and The Cigna Group's share of certain realized investment results of its joint ventures reported in the Cigna Healthcare segment using the equity method of accounting. Special items are matters that management believes are not representative of the underlying results of operations due to their nature or size. We exclude these items from this measure because management believes they are not indicative of past or future underlying performance of the business.