Basis of Presentation

The Hartford Financial Services Group, Inc. is a holding company for insurance and financial services subsidiaries that provide property and casualty insurance, group life and disability products and mutual funds and exchange-traded products to individual and business customers in the United States (collectively, “The Hartford”, the “Company”, “we” or “our”).

On December 3, 2017, Hartford Holdings, Inc., a wholly owned subsidiary of the Company, entered into a definitive agreement to sell all of the issued and outstanding equity of Hartford Life, Inc. (“HLI”), a holding company, and its life and annuity operating subsidiaries.

On November 1, 2017, Hartford Life and Accident Insurance Company (HLA), a wholly owned subsidiary of the Company, completed the acquisition of Aetna's U.S. group life and disability business through a reinsurance transaction.

On May 10, 2017, the Company completed the sale of its United Kingdom ("U.K.") property and casualty run-off subsidiaries.

On July 29, 2016, the Company completed the acquisition of Northern Homelands Company, the holding company of Maxum Specialty Insurance Group (collectively "Maxum"). On July 29, 2016, the Company completed the acquisition of Lattice Strategies LLC ("Lattice").

For further discussion of these transactions, see Note 2 - Business Acquisitions and Note 20 - Business Dispositions and Discontinued Operations of Notes to Consolidated Financial Statements.

The Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) which differ materially from the accounting practices prescribed by various insurance regulatory authorities.

Consolidation

The Consolidated Financial Statements include the accounts of The Hartford Financial Services Group, Inc., and entities in which the Company directly or indirectly has a controlling financial interest. Entities in which the Company has significant influence over the operating and financing decisions but does not control, are reported using the equity method. All intercompany transactions and balances between The Hartford and its subsidiaries and affiliates that are not held for sale have been eliminated .

Discontinued Operations

The results of operations of a component of the Company are reported in discontinued operations when certain criteria are met as of the date of disposal, or earlier if classified as held-for-sale. When a component is identified for discontinued operations reporting, amounts for prior periods are retrospectively reclassified as discontinued operations. Components are identified as discontinued operations if they are a major part of an entity's operations and financial results such as a separate major line of business or a separate major geographical area of operations.

Use of Estimates

The preparation of financial statements, in conformity with U.S. GAAP, requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

The most significant estimates include those used in determining property and casualty and group long-term disability insurance product reserves, net of reinsurance; evaluation of goodwill for impairment; valuation of investments and derivative instruments; valuation allowance on deferred tax assets; and contingencies relating to corporate litigation and regulatory matters.

Reclassifications

Certain reclassifications have been made to prior year financial information to conform to the current year presentation. In particular:

With respect to the Consolidated Statement of Operations:


•	Billing installment fees that were previously reflected as an offset to insurance operating costs and other expenses are now classified as fee income.


•	Flood servicing business has been realigned from specialty commercial within the Commercial Lines reporting segment to the Personal Lines reporting segment.


•	Amortization of other intangible assets has been reclassified out of insurance operating costs and other expenses.

With respect to the Consolidated Balance Sheets:


•	Assets and liabilities associated with the Company's life and annuity run-off business are now classified as assets and liabilities held for sale.

•

Unpaid losses and loss adjustment expenses and reinsurance recoverables for structured settlements reserves and recoverables due from the Company's life and annuity run-off business now classified as held for sale have been reclassified into the Company's P&C commercial lines business. Annuities purchased from the Company's life and annuity run-off business are recognized as reinsurance recoverables in cases where the Company has not obtained a release from the claimant. These amounts were previously eliminated in consolidation.


•	Policy loans have been reclassified to other investments.


•	Other intangible assets have been reclassified out of other assets.

Adoption of New Accounting Standards

Stock Compensation

On January 1, 2017 the Company adopted new stock compensation guidance issued by the Financial Accounting Standards Board ("FASB") on a prospective basis. The updated guidance requires the excess tax benefit or tax deficiency on vesting or settlement of stock-based awards to be recognized in earnings as an income tax benefit or expense, respectively, instead of as an adjustment to additional paid-in capital. The new guidance also requires the related cash flows to be presented in operating activities instead of in financing activities. The amount of excess tax benefit or tax deficiency realized on vesting or settlement of awards depends upon the difference between the market value of awards at vesting or settlement and the grant date fair value recognized through compensation expense. The excess tax benefit or tax deficiency is a discrete item in the reporting period in which it occurs and is not considered in determining the annual estimated effective tax rate for interim reporting. The excess tax benefit recognized in earnings for the year ended December 31, 2017 was $15, and the excess tax benefit recognized in additional paid-in capital for the years ended December 31, 2016 and 2015 was $5 and $27, respectively.

Future Adoption of New Accounting Standards

Reclassification of Effect of Tax Rate Change from AOCI to Retained Earnings

In February, the FASB issued new accounting guidance for the effect on deferred tax assets and liabilities related to items recorded in accumulated other comprehensive income ("AOCI") resulting from legislated tax reform enacted on December 22, 2017. The tax reform reduced the federal tax rate applied to the Company’s deferred tax balances from 35% to 21% on enactment. Under U.S. GAAP the Company recorded the total effect of the change in enacted tax rates on deferred tax balances in the income tax expense component of net income. The new accounting guidance permits the Company to reclassify the “stranded” tax effects out of AOCI and into retained earnings that resulted from recording the tax effects of unrealized investment gains, unrecognized actuarial losses on pension and other postretirement benefit plans, and cumulative translation adjustments at a 35% tax rate because the 14 point reduction in tax rate was recognized in net income instead of other comprehensive income. The Company will adopt the new guidance as of January 1, 2018. As a result of the reclassification, on January 1, 2018, the Company will reduce the estimated loss on sale recorded in income from discontinued operations by $193, net of tax, for the increase in AOCI related to the assets held for sale. The reduction in the loss on sale will result in a corresponding increase in assets held for sale and AOCI as of January 1, 2018 and the AOCI associated with assets held for sale will be removed from the balance sheet when the sale closes. Additionally, as of January 1, 2018, the Company will reclassify $105 of stranded tax effects related to continuing operations which will have the effect of reducing AOCI and increasing retained earnings.

Hedging Activities

The FASB issued updated guidance on hedge accounting. The updates allow hedge accounting for new types of interest rate hedges of financial instruments and simplify documentation requirements to qualify for hedge accounting. In addition, any gain or loss from hedge ineffectiveness will be reported in the same income statement line with the effective hedge results and the hedged transaction. For cash flow hedges, the ineffectiveness will be recognized in earnings only when the hedged transaction affects earnings; otherwise, the ineffectiveness gains or losses will remain in AOCI. Under current accounting, total hedge ineffectiveness is reported separately in realized gains and losses apart from the hedged transaction. The updated guidance is effective January 1, 2019 through a cumulative effect adjustment that will reclassify cumulative ineffectiveness on open cash flow hedges from retained earnings to AOCI. Early adoption is permitted as of the beginning of a year. The Company has not yet determined the timing for adoption or estimated the effect on the Company’s financial statements.

Goodwill

The FASB issued updated guidance on testing goodwill for impairment. The updated guidance requires recognition and measurement of goodwill impairment based on the excess of the carrying value of the reporting unit compared to its estimated fair value, with the amount of the impairment not to exceed the carrying value of the reporting unit’s goodwill. Under existing guidance, if the reporting unit’s carrying value exceeds its estimated fair value, the Company allocates the fair value of the reporting unit to all of the assets and liabilities of the reporting unit to determine an implied goodwill value. An impairment loss is then recognized for the excess, if any, of the carrying value of the reporting unit’s goodwill compared to the implied goodwill value. The Company expects to adopt the updated guidance January 1, 2020 on a prospective basis as required, although earlier adoption is permitted. While the Company would not have recognized a goodwill impairment loss for the years presented, the impact of the adoption will depend on the estimated fair value of the Company’s reporting units compared to the carrying value at adoption.

Financial Instruments - Credit Losses

The FASB issued updated guidance for recognition and measurement of credit losses on financial instruments. The new guidance will replace the “incurred loss” approach with an “expected loss” model for recognizing credit losses for instruments carried at other than fair value, which will initially result in the recognition of greater allowances for losses. The allowance will be an estimate of credit losses expected over the life of debt instruments, such as mortgage loans, reinsurance recoverables and receivables. Credit losses on fixed maturities available-for-sale (“AFS”) carried at fair value will continue to be measured like other-than-temporary impairments ("OTTI"); however, the losses will be recognized through an allowance and no longer as an adjustment to the cost basis. Recoveries of OTTI will be recognized as reversals of valuation allowances and no longer accreted as investment income through an adjustment to the investment yield. The allowance on fixed maturities AFS cannot cause the net carrying value to be below fair value and, therefore, it is possible that future increases in fair value due to decreases in market interest rates could cause the reversal of a valuation allowance and increase net income. The new guidance also requires purchased financial assets with a more-than-insignificant amount of credit deterioration since original issuance to be recorded based on contractual amounts due and an initial allowance recorded at the date of purchase. The guidance is effective January 1, 2020, through a cumulative-effect adjustment to retained earnings for the change in the allowance for credit losses for debt instruments carried at other than fair value. No allowance will be recognized at adoption for fixed maturities AFS; rather, their cost basis will be evaluated for an allowance for credit losses prospectively. The Company expects to adopt the updated guidance January 1, 2020, as required, although earlier adoption is permitted as of January 1, 2019. The Company has not yet determined the effect on the Company’s consolidated financial statements and the ultimate impact of the adoption will depend on the composition of the debt instruments and market conditions at the adoption date. Significant implementation matters yet to be addressed include estimating lifetime expected losses on debt instruments carried at other than fair value, determining the impact of valuation allowances on net investment income from fixed maturities AFS, updating our investment accounting system functionality to maintain adjustable valuation allowance on fixed maturities, AFS, subject to a fair value floor, and developing a detailed implementation plan.

Leases

The FASB issued updated guidance on lease accounting. Under the new guidance, lessees with operating leases will be required to recognize a liability for the present value of future minimum lease payments with a corresponding asset for the right of use of the property. Under existing guidance, future minimum lease payments on operating leases are commitments that are not recognized as liabilities on the balance sheet. The updated guidance is to be adopted effective January 1, 2019 through a cumulative effect adjustment to retained earnings for the earliest period presented, with early application permitted. Leases will be classified as financing or operating leases. Where the lease is economically similar to a purchase because The Hartford obtains control of the underlying asset, the lease will be a financing lease and the Company will recognize amortization of the right of use asset and interest expense on the liability. Where the lease provides The Hartford with only the right to control the use of the underlying asset over the lease term and the lease term is greater than one year, the lease will be an operating lease and the lease costs will be recognized as rental expense over the lease term on a straight-line basis. Leases with a term of one year or less will also be expensed over the lease term but will not be recognized on the balance sheet. The Company will adopt the new lease guidance effective January 1, 2019, and is currently evaluating the potential impact of the new guidance to the consolidated financial statements and the method of adoption. We do not expect a material impact to the consolidated financial statements; however, it is expected that assets and liabilities will increase based on the present value of remaining lease payments for leases in place at the adoption date.

Financial Instruments- Recognition and Measurement

The FASB issued updated guidance for the recognition and measurement of financial instruments. The new guidance will require investments in equity securities to be measured at fair value with any changes in valuation reported in net income except for investments that are consolidated or are accounted for under the equity method of accounting. The new guidance will also require a deferred tax asset resulting from net unrealized losses on available-for-sale fixed maturities that are recognized in AOCI to be evaluated for recoverability in combination with the Company’s other deferred tax assets. Under existing guidance, the Company measures investments in equity securities, AFS at fair value with changes in fair value reported in other comprehensive income. As required, the Company will adopt the guidance effective January 1, 2018 through a cumulative effect adjustment to retained earnings. Early adoption is not allowed. The impact to the Company will be increased volatility in net income beginning in 2018. Any difference in the evaluation of deferred tax assets may also affect stockholders' equity. Cash flows will not be affected. The impact will depend on the composition of the Company’s investment portfolio in the future and changes in fair value of the Company’s investments. As of January 1, 2018, the Company will reclassify from AOCI to retained earnings net unrealized gains of $83, after tax, related to equity securities, AFS having a fair value of $1.0 billion. Had the new accounting guidance been in place since the beginning of 2017, the Company would have recognized mark-to-market gains of $25 after-tax in net income for the year ended December 31, 2017.

Revenue Recognition

The FASB issued updated guidance for recognizing revenue. The guidance excludes insurance contracts and financial instruments. Revenue is to be recognized when, or as, goods or services are transferred to customers in an amount that reflects the consideration that an entity is expected to receive in exchange for those goods or services, and this accounting guidance is similar to current accounting for many transactions. This guidance is effective retrospectively on January 1, 2018, with a choice of restating prior periods or recognizing a cumulative effect for contracts in place as of the adoption date. Upon adoption on January 1, 2018, the Company will present fee income within the Mutual Funds segment gross of related distribution costs that are currently netted against revenues. Distribution costs of $188, $184, and $190 for the years ended December 31, 2017, 2016 and 2015, respectively, will be reclassified from fee income to insurance operating costs and other expenses. The adoption will not have a material effect on the Company’s financial position, cash flows or net income.

Significant Accounting Policies

The Company’s significant accounting policies are as follows:

Revenue Recognition

Property and casualty insurance premiums are earned on a pro rata basis over the policy period and include accruals for ultimate premium revenue anticipated under auditable and retrospectively rated policies. Unearned premiums represent the premiums applicable to the unexpired terms of policies in force. An estimated allowance for doubtful accounts is recorded on the basis of periodic evaluations of balances due from insureds, management’s experience and current economic conditions. The Company charges off any balances that are determined to be uncollectible. The allowance for doubtful accounts included in premiums receivable and agents’ balances in the Consolidated Balance Sheets was $132 and $137 as of December 31, 2017 and 2016, respectively.

Group life, disability and accident premiums are generally both due from policyholders and recognized as revenue on a pro rata basis over the period of the contracts.

The Company provides investment management, administrative and distribution services to mutual funds and exchange-traded products. The Company earns fees, primarily based on the average daily net asset values of the mutual funds and exchange-traded products, which are recorded as fee income in the period in which the services are provided. Commission fees are based on the sale proceeds and recognized at the time of the transaction. Transfer agent fees are assessed as a charge per account and recognized as fee income in the period in which the services are provided.

Other revenues primarily consists of servicing revenues which are recognized as services are performed.

Dividends to Policyholders

Policyholder dividends are paid to certain property and casualty policyholders. Policies that receive dividends are referred to as participating policies. Participating dividends to policyholders are accrued and reported in insurance operating costs and other expenses and other liabilities using an estimate of the amount to be paid based on underlying contractual obligations under policies and applicable state laws.

Net written premiums for participating property and casualty insurance policies represented 10%, 9% and 10% of total net written premiums for the years ended December 31, 2017, 2016 and 2015, respectively. Participating dividends to property and casualty policyholders were $35, $15 and $17 for the years ended December 31, 2017, 2016 and 2015, respectively.

There were no additional amounts of income allocated to participating policyholders.

Investments

Overview

The Company’s investments in fixed maturities include bonds, structured securities, redeemable preferred stock and commercial paper. Most of these investments, along with certain equity securities, which include common and non-redeemable preferred stocks, are classified as available-for-sale ("AFS") and are carried at fair value. The after-tax difference between fair value and cost or amortized cost is reflected in stockholders’ equity as a component of AOCI. Effective January 1, 2018, equity securities will be measured at fair value with any changes in valuation reported in net income. For further information, see Financial Instruments - Recognition and Measurement discussion above. Fixed maturities for which the Company elected the fair value option are classified as FVO, generally certain securities that contain embedded credit derivatives, are carried at fair value with changes in value recorded in realized capital gains and losses. Mortgage loans are recorded at the outstanding principal balance adjusted for amortization of premiums or discounts and net of valuation allowances. Short-term investments are carried at amortized cost, which approximates fair value. Limited partnerships and other alternative investments are reported at their carrying value and are primarily accounted for under the equity method with the Company’s share of earnings included in net investment income. Recognition of income related to limited partnerships and other alternative investments is delayed due to the availability of the related financial information, as private equity and other funds are generally on a three-month delay and hedge funds on a one-month delay. Accordingly, income for the years ended December 31, 2017, 2016, and 2015 may not include the full impact of current year changes in valuation of the underlying assets and liabilities of the funds, which are generally obtained from the limited partnerships and other alternative investments’ general partners. Other investments primarily consist of derivative instruments which are carried at fair value.

Net Realized Capital Gains and Losses

Net realized capital gains and losses from investment sales are reported as a component of revenues and are determined on a specific identification basis. Net realized capital gains and losses also result from fair value changes in fixed maturities and equity securities FVO, and derivatives contracts (both free-standing and embedded) that do not qualify, or are not designated, as a hedge for accounting purposes as well as ineffectiveness on derivatives that qualify for hedge accounting treatment. Impairments and mortgage loan valuation allowances are recognized as net realized capital losses in accordance with the Company’s impairment and mortgage loan valuation allowance policies as discussed in Note 6 - Investments of Notes to Consolidated Financial Statements. Foreign currency transaction remeasurements are also included in net realized capital gains and losses.

Net Investment Income

Interest income from fixed maturities and mortgage loans is recognized when earned on the constant effective yield method based on estimated timing of cash flows. The amortization of premium and accretion of discount for fixed maturities also takes into consideration call and maturity dates that produce the lowest yield. For securitized financial assets subject to prepayment risk, yields are recalculated and adjusted periodically to reflect historical and/or estimated future prepayments using the retrospective method; however, if these investments are impaired and for certain other asset-backed securities, any yield adjustments are made using the prospective method. Prepayment fees and make-whole payments on fixed maturities and mortgage loans are recorded in net investment income when earned. For equity securities, dividends are recognized as investment income on the ex-dividend date. Limited partnerships and other alternative investments primarily use the equity method of accounting to recognize the Company’s share of earnings; however, for a portion of those investments, the Company used investment fund accounting applied to a wholly-owned fund of funds which was liquidated during 2016. For impaired debt securities, the Company accretes the new cost basis to the estimated future cash flows over the expected remaining life of the security by prospectively adjusting the security’s yield, if necessary. The Company’s non-income producing investments were not material for the years ended December 31, 2017, 2016 and 2015.

Derivative Instruments

Overview

The Company utilizes a variety of over-the-counter ("OTC"), transactions cleared through central clearing houses ("OTC-cleared") and exchange traded derivative instruments as part of its overall risk management strategy as well as to enter into replication transactions. The types of instruments may include swaps, caps, floors, forwards, futures and options to achieve one of four Company-approved objectives:


•	to hedge risk arising from interest rate, equity market, commodity market, credit spread and issuer default, price or currency exchange rate risk or volatility;


•	to manage liquidity;


•	to control transaction costs;


•	to enter into synthetic replication transactions.

Interest rate and credit default swaps involve the periodic exchange of cash flows with other parties, at specified intervals, calculated using agreed upon rates or other financial variables and notional principal amounts. Generally, little to no cash or principal payments are exchanged at the inception of the contract. Typically, at the time a swap is entered into, the cash flow streams exchanged by the counterparties are equal in value.

Interest rate cap and floor contracts entitle the purchaser to receive from the issuer at specified dates, the amount, if any, by which a specified market rate exceeds the cap strike interest rate or falls below the floor strike interest rate, applied to a notional principal amount. A premium payment determined at inception is made by the purchaser of the contract and no principal payments are exchanged.

Forward contracts are customized commitments that specify a rate of interest or currency exchange rate to be paid or received on an obligation beginning on a future start date and are typically settled in cash.

Financial futures are standardized commitments to either purchase or sell designated financial instruments, at a future date, for a specified price and may be settled in cash or through delivery of the underlying instrument. Futures contracts trade on organized exchanges. Margin requirements for futures are met by pledging securities or cash, and changes in the futures’ contract values are settled daily in cash.

Option contracts grant the purchaser, for a premium payment, the right to either purchase from or sell to the issuer a financial instrument at a specified price, within a specified period or on a stated date. The contracts may reference commodities, which grant the purchaser the right to either purchase from or sell to the issuer commodities at a specified price, within a specified period or on a stated date. Option contracts are typically settled in cash.

Foreign currency swaps exchange an initial principal amount in two currencies, agreeing to re-exchange the currencies at a future date, at an agreed upon exchange rate. There may also be a periodic exchange of payments at specified intervals calculated using the agreed upon rates and exchanged principal amounts.

The Company’s derivative transactions conducted in insurance company subsidiaries are used in strategies permitted under the derivative use plans required by the State of Connecticut, the State of Illinois and the State of New York insurance departments.

Accounting and Financial Statement Presentation of Derivative Instruments and Hedging Activities

Derivative instruments are recognized on the Consolidated Balance Sheets at fair value and are reported in Other Investments and Other Liabilities. For balance sheet presentation purposes, the Company has elected to offset the fair value amounts, income accruals, and related cash collateral receivables and payables of OTC derivative instruments executed in a legal entity and with the same counterparty or under a master netting agreement, which provides the Company with the legal right of offset.

The Company clears certain interest rate swap and credit default swap derivative transactions through central clearing houses. OTC-cleared derivatives require initial collateral at the inception of the trade in the form of cash or highly liquid securities, such as U.S. Treasuries and government agency investments. Central clearing houses also require additional cash as variation margin based on daily market value movements. For information on collateral, see the derivative collateral arrangements section in Note 7 - Derivatives of Notes to Consolidated Financial Statements. In addition, OTC-cleared transactions include price alignment amounts either received or paid on the variation margin, which are reflected in realized capital gains and losses or, if characterized as interest, in net investment income.

On the date the derivative contract is entered into, the Company designates the derivative as (1) a hedge of the fair value of a recognized asset or liability (“fair value” hedge), (2) a hedge of the variability in cash flows of a forecasted transaction or of amounts to be received or paid related to a recognized asset or liability (“cash flow” hedge), (3) a hedge of a net investment in a foreign operation (“net investment” hedge) or (4) held for other investment and/or risk management purposes, which primarily involve managing asset or liability related risks and do not qualify for hedge accounting. The Company currently does not designate any derivatives as fair value or net investment hedges.

Cash Flow Hedges - Changes in the fair value of a derivative that is designated and qualifies as a cash flow hedge, including foreign-currency cash flow hedges, are recorded in AOCI and are reclassified into earnings when the variability of the cash flow of the hedged item impacts earnings. Gains and losses on derivative contracts that are reclassified from AOCI to current period earnings are included in the line item in the Consolidated Statements of Operations in which the cash flows of the hedged item are recorded. Any hedge ineffectiveness is recorded immediately in current period earnings as net realized capital gains and losses. Periodic derivative net coupon settlements are recorded in the line item of the Consolidated Statements of Operations in which the cash flows of the hedged item are recorded. Cash flows from cash flow hedges are presented in the same category as the cash flows from the items being hedged in the Consolidated Statement of Cash Flows.

Other Investment and/or Risk Management Activities - The Company’s other investment and/or risk management activities primarily relate to strategies used to reduce economic risk or replicate permitted investments and do not receive hedge accounting treatment. Changes in the fair value, including periodic derivative net coupon settlements, of derivative instruments held for other investment and/or risk management purposes are reported in current period earnings as net realized capital gains and losses.

Hedge Documentation and Effectiveness Testing

To qualify for hedge accounting treatment, a derivative must be highly effective in mitigating the designated changes in fair value or cash flow of the hedged item. At hedge inception, the Company formally documents all relationships between hedging instruments and hedged items, as well as its risk-management objective and strategy for undertaking each hedge transaction. The documentation process includes linking derivatives that are designated as fair value, cash flow, or net investment hedges to specific assets or liabilities on the balance sheet or to specific forecasted transactions and defining the effectiveness and ineffectiveness testing methods to be used. The Company also formally assesses both at the hedge’s inception and ongoing on a quarterly basis, whether the derivatives that are used in hedging transactions have been and are expected to continue to be highly effective in offsetting changes in fair values, cash flows or net investment in foreign operations of hedged items. Hedge effectiveness is assessed primarily using quantitative methods as well as using qualitative methods. Quantitative methods include regression or other statistical analysis of changes in fair value or cash flows associated with the hedge relationship. Qualitative methods may include comparison of critical terms of the derivative to the hedged item. Hedge ineffectiveness of the hedge relationships are measured each reporting period using the “Change in Variable Cash Flows Method”, the “Change in Fair Value Method”, the “Hypothetical Derivative Method”, or the “Dollar Offset Method”.

Discontinuance of Hedge Accounting

The Company discontinues hedge accounting prospectively when (1) it is determined that the qualifying criteria are no longer met; (2) the derivative is no longer designated as a hedging instrument; or (3) the derivative expires or is sold, terminated or exercised.

When hedge accounting is discontinued because it is determined that the derivative no longer qualifies as an effective fair value hedge, the derivative continues to be carried at fair value on the balance sheet with changes in its fair value recognized in current period earnings. Changes in the fair value of the hedged item attributable to the hedged risk is no longer adjusted through current period earnings and the existing basis adjustment is amortized to earnings over the remaining life of the hedged item through the applicable earnings component associated with the hedged item.

When cash flow hedge accounting is discontinued because the Company becomes aware that it is not probable that the forecasted transaction will occur, the derivative continues to be carried on the balance sheet at its fair value, and gains and losses that were accumulated in AOCI are recognized immediately in earnings.

In other situations in which hedge accounting is discontinued, including those where the derivative is sold, terminated or exercised, amounts previously deferred in AOCI are reclassified into earnings when earnings are impacted by the hedged item.

Embedded Derivatives

The Company purchases investments that contain embedded derivative instruments. When it is determined that (1) the embedded derivative possesses economic characteristics that are not clearly and closely related to the economic characteristics of the host contract and (2) a separate instrument with the same terms would qualify as a derivative instrument, the embedded derivative is bifurcated from the host for measurement purposes. The embedded derivative, which is reported with the host instrument in the Consolidated Balance Sheets, is carried at fair value with changes in fair value reported in net realized capital gains and losses.

Credit Risk

Credit risk is defined as the risk of financial loss due to uncertainty of an obligor’s or counterparty’s ability or willingness to meet its obligations in accordance with agreed upon terms. Credit exposures are measured using the market value of the derivatives, resulting in amounts owed to the Company by its counterparties or potential payment obligations from the Company to its counterparties. The Company generally requires that OTC derivative contracts, other than certain forward contracts, be governed by International Swaps and Derivatives Association ("ISDA") agreements which are structured by legal entity and by counterparty, and permit right of offset. Some agreements require daily collateral settlement based upon agreed upon thresholds. For purposes of daily derivative collateral maintenance, credit exposures are generally quantified based on the prior business day’s market value and collateral is pledged to and held by, or on behalf of, the Company to the extent the current value of the derivatives exceed the contractual thresholds. For the Company’s domestic derivative programs, the maximum uncollateralized threshold for a derivative counterparty for a single legal entity is $10. The Company also minimizes the credit risk of derivative instruments by entering into transactions with high quality counterparties primarily rated A or better, which are monitored and evaluated by the Company’s risk management team and reviewed by senior management. OTC-cleared derivatives are governed by clearing house rules. Transactions cleared through a central clearing house reduce risk due to their ability to require daily variation margin and act as an independent valuation source. In addition, the Company monitors counterparty credit exposure on a monthly basis to ensure compliance with Company policies and statutory limitations.

Cash

Cash represents cash on hand and demand deposits with banks or other financial institutions.

Reinsurance

The Company cedes insurance to affiliated and unaffiliated insurers in order to limit its maximum losses and to diversify its exposures and provide statutory surplus relief. Such arrangements do not relieve the Company of its primary liability to policyholders. Failure of reinsurers to honor their obligations could result in losses to the Company. The Company also assumes reinsurance from other insurers and is a member of and participates in reinsurance pools and associations. Assumed reinsurance refers to the Company’s acceptance of certain insurance risks that other insurance companies or pools have underwritten.

Reinsurance accounting is followed for ceded and assumed transactions that provide indemnification against loss or liability relating to insurance risk (i.e. risk transfer). To meet risk transfer requirements, a reinsurance agreement must include insurance risk, consisting of underwriting, and timing risk, and a reasonable possibility of a significant loss to the reinsurer. If the ceded and assumed transactions do not meet risk transfer requirements, the Company accounts for these transactions as financing transactions.

Premiums, benefits, losses and loss adjustment expenses reflect the net effects of ceded and assumed reinsurance transactions. Included in other assets are prepaid reinsurance premiums, which represent the portion of premiums ceded to reinsurers applicable to the unexpired terms of the reinsurance contracts. Reinsurance recoverables are balances due from reinsurance companies for paid and unpaid losses and loss adjustment expenses and are presented net of an allowance for uncollectible reinsurance. Changes in the allowance for uncollectible reinsurance are reported in benefits, losses and loss adjustment expenses in the Company's Consolidated Statements of Operations.

The Company evaluates the financial condition of its reinsurers and concentrations of credit risk. Reinsurance is placed with reinsurers that meet strict financial criteria established by the Company.

Deferred Policy Acquisition Costs

Deferred policy acquisition costs ("DAC") represent costs that are directly related to the acquisition of new and renewal insurance contracts and incremental direct costs of contract acquisition that are incurred in transactions with either independent third parties or employees. Such costs primarily include commissions, premium taxes, costs of policy issuance and underwriting, and certain other expenses that are directly related to successfully issued contracts.

For property and casualty insurance products and group life, disability and accident contracts, costs are deferred and amortized ratably over the period the related premiums are earned. Deferred acquisition costs are reviewed to determine if they are recoverable from future income, and if not, are charged to expense. Anticipated investment income is considered in the determination of the recoverability of DAC.

Income Taxes

The Company recognizes taxes payable or refundable for the current year and deferred taxes for the tax consequences of temporary differences between the financial reporting and tax basis of assets and liabilities. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years the temporary differences are expected to reverse. A deferred tax provision is recorded for the tax effects of differences between the Company's current taxable income and its income before tax under generally accepted accounting principles in the Consolidated Statements of Operations. For deferred tax assets, the Company records a valuation allowance that is adequate to reduce the total deferred tax asset to an amount that will more likely than not be realized.

Goodwill

Goodwill represents the excess of the cost to acquire a business over the fair value of net assets acquired. Goodwill is not amortized but is reviewed for impairment at least annually or more frequently if events occur or circumstances change that would indicate that a triggering event for a potential impairment has occurred. The goodwill impairment test follows a two-step process. In the first step, the fair value of a reporting unit is compared to its carrying value. If the carrying value of a reporting unit exceeds its fair value, the second step of the impairment test is performed for purposes of measuring the impairment. In the second step, the fair value of the reporting unit is allocated to all of the assets and liabilities of the reporting unit to determine an implied goodwill value. If the carrying amount of the reporting unit’s goodwill exceeds the implied goodwill value, an impairment loss is recognized in an amount equal to that excess.

Management’s determination of the fair value of each reporting unit incorporates multiple inputs into discounted cash flow calculations, including assumptions that market participants would make in valuing the reporting unit. Assumptions include levels of economic capital required to support the business, future business growth, earnings projections and assets under management for certain reporting units and the weighted average cost of capital used for purposes of discounting. Decreases in business growth, decreases in earnings projections and increases in the weighted average cost of capital will all cause a reporting unit’s fair value to decrease, increasing the possibility of impairments.

Intangible Assets

Acquired intangible assets on the Consolidated Balance Sheets include purchased customer and agency or other distribution relationships and licenses measured at fair value at acquisition. The Company amortizes finite-lived other intangible assets over their useful lives generally on a straight-line basis over the period of expected benefit, ranging from 1 to 15 years. Management revises amortization periods if it believes there has been a change in the length of time that an intangible asset will continue to have value. Indefinite-lived intangible assets are not subject to amortization. Intangible assets are assessed for impairment generally when events or circumstances indicate a potential impairment and at least annually for indefinite-lived intangibles. If the carrying amount is not recoverable from undiscounted cash flows, the impairment is measured as the difference between the carrying amount and fair value.

Property and Equipment

Property and equipment which includes capitalized software is carried at cost net of accumulated depreciation. Depreciation is based on the estimated useful lives of the various classes of property and equipment and is determined principally on the straight-line method. Accumulated depreciation was $2.6 billion and $2.5 billion as of December 31, 2017 and 2016, respectively. Depreciation expense was $197, $186, and $164 for the years ended December 31, 2017, 2016 and 2015, respectively.

Unpaid Losses and Loss Adjustment Expenses

For property and casualty and group life and disability insurance products, the Company establishes reserves for unpaid losses and loss adjustment expenses to provide for the estimated costs of paying claims under insurance policies written by the Company. These reserves include estimates for both claims that have been reported and those that have been incurred but not reported ("IBNR"), and include estimates of all losses and loss adjustment expenses associated with processing and settling these claims. Estimating the ultimate cost of future losses and loss adjustment expenses is an uncertain and complex process. This estimation process is based significantly on the assumption that past developments are an appropriate predictor of future events, and involves a variety of actuarial techniques that analyze experience, trends and other relevant factors. The effects of inflation are implicitly considered in the reserving process. A number of complex factors influence the uncertainties involved with the reserving process including social and economic trends and changes in the concepts of legal liability and damage awards. Accordingly, final claim settlements may vary from the present estimates, particularly when those payments may not occur until well into the future. The Company regularly reviews the adequacy of its estimated losses and loss adjustment expense reserves by reserve line within the various reporting segments. Adjustments to previously established reserves are reflected in the operating results of the period in which the adjustment is determined to be necessary. Such adjustments could possibly be significant, reflecting any variety of new and adverse or favorable trends.

Most of the Company’s property and casualty insurance products reserves are not discounted. However, the Company has discounted to present value certain reserves for indemnity payments that are due to permanently disabled claimants under workers’ compensation policies because the payment pattern and the ultimate costs are reasonably fixed and determinable on an individual claim basis. The discount rate is based on the risk free rate for the expected claim duration as determined in the year the claims were incurred. The Company also has discounted liabilities for structured settlement agreements that provide fixed periodic payments to claimants. These structured settlements include annuities purchased to fund unpaid losses for permanently disabled claimants. Most of the annuities have been issued by the life and annuity run-off business held for sale and the annuity obligations are now included as part of liabilities held for sale, recognized at present value. Upon classifying the life and annuity run-off business as held-for-sale, the Company increased property & casualty reinsurance recoverables and unpaid losses and loss adjustment expenses for annuities issued by the life and annuity run-off business to fund structured settlement payments where the claimant has not released the Company of its obligation totaling $688 and $712 as of December 31, 2017 and 2016, respectively. These structured settlement liabilities were discounted to present value using an average interest rate of 6.70% in 2017 and 6.69% in 2016.

Group life and disability contracts with long-tail claim liabilities are discounted because the payment pattern and the ultimate costs are reasonably fixed and determinable on an individual claim basis. The discount rates are estimated based on investment yields expected to be earned on the cash flows net of investment expenses and expected credit losses. The Company establishes discount rates for these reserves in the year the claims are incurred (the incurral year) which is when the estimated settlement pattern is determined. The discount rate for life and disability reserves acquired from Aetna's U.S. group life and disability business were based on interest rates in effect at the acquisition date of November 1, 2017.

For further information about how unpaid losses and loss adjustment expenses are established, see Note 11 - Reserve for Unpaid Losses and Loss Adjustment Expenses of Notes to Consolidated Financial Statements.

Foreign Currency

Foreign currency translation gains and losses are reflected in stockholders’ equity as a component of AOCI. The Company’s foreign subsidiaries’ balance sheet accounts are translated at the exchange rates in effect at each year end and income statement accounts are translated at the average rates of exchange prevailing during the year. The national currencies of the international operations are generally their functional currencies. Gains and losses resulting from the remeasurement of foreign currency transactions are reflected in earnings in realized capital gains (losses) in the period in which they occur.