Business and Basis of Presentation (Policies)

12 Months Ended

Dec. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

The consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (GAAP). In management's opinion, all material adjustments necessary for a fair statement of the financial condition, results of operations and cash flows of the Company and its consolidated variable interest entities (VIEs) are reflected in the periods presented and are of a normal, recurring nature. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of 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.

Significant Accounting Policies

The Company revalues assets, liabilities, revenue and expenses denominated in non-U.S. currencies into U.S. dollars using applicable exchange rates. Gains and losses relating to transactions in foreign denominations in those subsidiaries where the functional currency is the U.S. dollar, are reported in the consolidated statement of operations. Prior to the Combination, two of the Company's European subsidiaries had a functional currency other than the U.S. dollar. Gains and losses relating to translating foreign functional currency financial statements for U.S. GAAP reporting are recorded in other comprehensive income (loss) (OCI).

The chief operating decision maker manages the operations of the Company at a consolidated level. Therefore, all results of operations are reported as one segment.

Other accounting policies are included in the following notes.

Accounting Policies



Business Combinations	Note 2
Expected loss to be paid (insurance, credit derivatives and financial guaranty VIEs contracts)	Note 5
Contracts accounted for as insurance (premium revenue recognition, loss and loss adjustment expense and policy acquisition cost)	Note 6 and 13
Fair value measurement	Note 7
Credit derivatives (at fair value)	Note 8
Variable interest entities (at fair value)	Note 9
Investments and cash	Note 10
Income taxes	Note 12
Leases	Note 15
Long term debt	Note 16
Earnings per share	Note 17
Share repurchases	Note 18
Stock based compensation	Note 19

Accounting Policies

The acquisitions were accounted for under the acquisition method of accounting which requires that the assets and liabilities acquired be recorded at fair value. The Company exercised significant judgment to determine the fair value of the assets it acquired and liabilities it assumed in each of the acquisitions. The most significant of these determinations related to the valuation of the acquired financial guaranty insurance contracts. On an aggregate basis, the acquired companies' contractual premiums for financial guaranty insurance contracts acquired were less than the premiums a market participant of similar credit quality would demand to acquire those contracts at the date of acquisition (particularly for BIG transactions) resulting in a significant amount of the purchase price being allocated to these contracts. For information on the methodology used to measure the fair value of assets acquired and liabilities assumed in the acquisitions, see Note 7, Fair Value Measurement.

The fair value of the Company's stand-ready obligation on the date of acquisition is recorded in unearned premium reserve. Thereafter, loss reserves and loss and loss adjustment expenses (LAE) are recorded in accordance with the Company's accounting policy for insurance or credit derivatives, depending on each contract's characteristics.

The excess of the fair value of net assets acquired over the consideration transferred was recorded, in each acquisition, as a bargain purchase gain in the statement of operations. In addition, the Company and each of the acquired companies had pre-existing reinsurance relationships, which were effectively settled at fair value on their respective acquisition dates. The gain or loss on settlement of these pre-existing reinsurance relationships represents the net difference between the historical assumed or ceded balances that were recorded by the Company and the fair value of ceded or assumed balances acquired and was also recorded in the statement of operations.

Adopted Accounting Standards

Changes to the Disclosure Requirements for Fair Value Measurement

In August 2018, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement. This ASU removed, modified and added additional disclosure requirements on fair value measurements in Topic 820. The Company has adopted this ASU as of December 31, 2018 with the relevant disclosure updates included in Note 7, Fair Value Measurements.

Financial Instruments

In January 2016, the FASB issued ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10) - Recognition and Measurement of Financial Assets and Financial Liabilities. The amendments in this ASU are intended to make targeted improvements to GAAP by addressing certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. Amendments under this ASU apply to the Company's financial guaranty variable interest entities’ (FG VIEs’) liabilities, which the Company has historically elected to measure through the statement of operations under the fair value option, and to certain equity securities in the Company’s investment portfolio.

For FG VIEs’ liabilities with recourse, the portion of the change in fair value caused by changes in instrument-specific credit risk (ISCR) (i.e., in the case of FG VIEs’ liabilities, the Company's own credit risk) must now be separately presented in OCI as opposed to the statement of operations. See Note 9, Variable Interest Entities for additional information.

Amendments under this ASU also apply to equity securities, except those that are accounted for under the equity method of accounting or that resulted in consolidation of the investee by the Company. For equity securities accounted for at fair value, changes in fair value that previously were recorded in OCI are now recorded in other income in the consolidated statements of operations effective January 1, 2018. Equity securities carried at cost as of December 31, 2017, are now recorded at cost less impairment plus or minus the change resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. Such changes are recorded in the statement of operations. See Note 10, Investments and Cash for additional information.

On January 1, 2018, the Company adopted this ASU resulting in a cumulative-effect reclassification of a $32 million loss, net of tax, from retained earnings to accumulated OCI (AOCI).

Income Taxes

In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740) - Intra-Entity Transfers of Assets Other Than Inventory, which removed the prohibition against immediate recognition of the current and deferred income tax effects of intra-entity transfers of assets other than inventory. Under the ASU, the selling (transferring) entity is required to recognize a current income tax expense or benefit upon transfer of the asset. Similarly, the purchasing (receiving) entity is required to recognize a deferred tax asset or deferred tax liability, as well as the related deferred tax benefit or expense, upon receipt of the asset. The ASU was adopted on January 1, 2018 with no material effect on the consolidated financial statements.

Future Application of Accounting Standards

Premium Amortization on Purchased Callable Debt Securities

In March 2017, the FASB issued ASU 2017-08, Receivables-Nonrefundable Fees and Other Costs (Topic 310-20) - Premium Amortization on Purchased Callable Debt Securities. This ASU shortens the amortization period for the premium on certain purchased callable debt securities to the earliest call date. This ASU has no effect on the accounting for purchased callable debt securities held at a discount. It is to be applied using a modified retrospective approach and the ASU is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. This ASU will have no effect on the Company's consolidated financial statements.

Leases

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). Subsequent to the issuance of this ASU, Topic 842 was amended by various updates that clarified the impact and implementation of ASU 2016-02. Collectively, these updates will require lessees to present right-of-use assets and lease liabilities on the balance sheet. The Company currently accounts for its lease agreements, where the Company is the lessee, as operating leases and, therefore, does not record these leases on its consolidated balance sheet. Upon adoption on January 1, 2019, the Company will report an increase in both assets and liabilities of approximately $69 million primarily related to the Company's office space leases.

Credit Losses on Financial Instruments

In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The ASU provides a new current expected credit loss model to account for credit losses on certain financial assets and off-balance sheet exposures (e.g., reinsurance recoverables, premium receivables, held-to- maturity debt securities, and loan commitments). That model requires an entity to estimate lifetime credit losses related to certain financial assets, based on relevant historical information, adjusted for current conditions and reasonable and supportable forecasts that could affect the collectability of the reported amount. The ASU also makes targeted amendments to the current impairment model for available-for-sale debt securities, which includes requiring the recognition of an allowance rather than a direct write-down of the investment. The allowance may be reversed in the event that the credit of an issuer improves. In addition, the ASU eliminates the existing guidance for purchased credit impaired assets and introduces a new model for purchased financial assets with credit deterioration, such as the Company's loss mitigation securities. That new model would require the recognition of an initial allowance for credit losses, which is added to the purchase price.

The ASU is effective for fiscal years, and interim period within those fiscal years, beginning after December 15, 2019. For reinsurance recoverables, premiums receivable and debt instruments such as loans and held to maturity securities, entities will be required to record a cumulative-effect adjustment to the statement of financial position as of the beginning of the first reporting period in which the guidance is adopted. The changes to the impairment model for available-for-sale securities and changes to purchased financial assets with credit deterioration are to be applied prospectively. Early adoption of the amendments is permitted. The Company does not plan to early adopt this ASU. The Company is evaluating the effect that this ASU will have on its financial statements.

Targeted Improvements to the Accounting for Long-Duration Contracts

In August 2018, the FASB issued ASU 2018-12, Financial Services - Insurance (Topic 944): Targeted Improvements to the Accounting for Long-Duration Contracts. The amendments in this ASU:


•	improve the timeliness of recognizing changes in the liability for future policy benefits and modify the rate used to discount future cash flows,


•	simplify and improve the accounting for certain market-based options or guarantees associated with deposit (or account balance) contracts,


•	simplify the amortization of deferred acquisition costs, and


•	improve the effectiveness of the required disclosures.

This ASU does not impact the Company’s financial guaranty insurance contracts, but may impact its accounting for certain non-financial guaranty contracts. This ASU is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. Early adoption of the amendments is permitted. The Company does not expect this ASU to have a material effect on its consolidated financial statements.

Consolidation

The consolidated financial statements include the accounts of AGL, its direct and indirect subsidiaries and its consolidated VIEs. Intercompany accounts and transactions between and among all consolidated entities have been eliminated.

Reclassification

Certain prior year balances have been reclassified to conform to the current year's presentation.

Foreign Currency Transactions and Translations

Debt

Long-term debt is recorded at principal amounts net of any unamortized original issue discount or premium and unamortized acquisition date fair value adjustment for AGM and AGMH debt. Discounts and acquisition date fair value adjustments are accreted into interest expense over the life of the applicable debt.

Revenue Recognition, Deferred Revenue

Accounting for financial guaranty contracts that meet the scope exception under derivative accounting guidance are subject to industry specific guidance for financial guaranty insurance. The accounting for contracts that fall under the financial guaranty insurance definition are consistent whether contracts are written on a direct basis, assumed from another financial guarantor under a reinsurance treaty, ceded to another insurer under a reinsurance treaty, or acquired in a business combination.

Premiums receivable represent the present value of contractual or expected future premium collections discounted using risk free rates. Unearned premium reserve represents deferred premium revenue, less claim payments made and recoveries received that have not yet been recognized in the statement of operations (contra-paid). The following discussion relates to the deferred premium revenue component of the unearned premium reserve, while the contra-paid is discussed below under "Financial Guaranty Insurance Losses."

The amount of deferred premium revenue at contract inception is determined as follows:


•	For premiums received upfront on financial guaranty insurance contracts that were originally underwritten by the Company, deferred premium revenue is equal to the amount of cash received. Upfront premiums typically relate to public finance transactions.

•

For premiums received in installments on financial guaranty insurance contracts that were originally underwritten by the Company, deferred premium revenue is the present value (discounted at risk free rates) of either (1) contractual premiums due or (2) in cases where the underlying collateral is composed of homogeneous pools of assets, the expected premiums to be collected over the life of the contract. To be considered a homogeneous pool of assets, prepayments must be contractually allowable, the amount of prepayments must be probable, and the timing and amount of prepayments must be reasonably estimable. Installment premiums typically relate to structured finance transactions, where the insurance premium rate is determined at the inception of the contract but the insured par is subject to prepayment throughout the life of the transaction.

•

For financial guaranty insurance contracts acquired in a business combination, deferred premium revenue is equal to the fair value of the Company's stand-ready obligation portion of the insurance contract at the date of acquisition based on what a hypothetical similarly rated financial guaranty insurer would have charged for the contract at that date and not the actual cash flows under the insurance contract. The amount of deferred premium revenue may differ significantly from cash collections primarily due to fair value adjustments recorded in connection with a business combination.

When the Company adjusts prepayment assumptions or expected premium collections, an adjustment is recorded to the deferred premium revenue, with a corresponding adjustment to the premium receivable. Premiums receivable are discounted at the risk-free rate at inception and such discount rate is updated only when changes to prepayment assumptions are made that change the expected date of final maturity.

The Company recognizes deferred premium revenue as earned premium over the contractual period or expected period of the contract in proportion to the amount of insurance protection provided. As premium revenue is recognized, a corresponding decrease to the deferred premium revenue is recorded. The amount of insurance protection provided is a function of the insured principal amount outstanding. Accordingly, the proportionate share of premium revenue recognized in a given reporting period is a constant rate calculated based on the relationship between the insured principal amounts outstanding in the reporting period compared with the sum of each of the insured principal amounts outstanding for all periods. When an insured financial obligation is retired before its maturity, the financial guaranty insurance contract is extinguished. Any nonrefundable deferred premium revenue related to that contract is accelerated and recognized as premium revenue. When a premium receivable balance is deemed uncollectible, it is written off to bad debt expense.

For assumed reinsurance contracts, net earned premiums reported in the consolidated statements of operations are calculated based upon data received from ceding companies; however, some ceding companies report premium data between 30 and 90 days after the end of the reporting period. The Company estimates net earned premiums for the lag period. Differences between such estimates and actual amounts are recorded in the period in which the actual amounts are determined. When installment premiums are related to assumed reinsurance contracts, the Company assesses the credit quality and liquidity of the ceding companies and the impact of any potential regulatory constraints to determine the collectability of such amounts.

Policy Acquisition Costs

Policy acquisition costs that are directly related and essential to successful insurance contract acquisition, as well as ceding commission income and expense on ceded and assumed reinsurance contracts, are deferred and reported net.

Capitalized policy acquisition costs include the cost of underwriting personnel attributable to successful underwriting efforts. Management uses its judgment in determining the type and amount of costs to be deferred. The Company conducts an annual study to determine deferral rates.

Ceding commission expense on assumed reinsurance contracts and ceding commission income on ceded reinsurance contracts that are associated with premiums received in installments are calculated at their contractually defined commission rates, discounted consistent with premiums receivable for all future periods, and included in deferred acquisition costs (DAC), with a corresponding offset to net premiums receivable or reinsurance balances payable.

DAC is amortized in proportion to net earned premiums. Amortization of deferred policy acquisition costs includes the accretion of discount on ceding commission receivable and payable. When an insured obligation is retired early, the remaining related DAC is recognized at that time. Costs incurred for soliciting potential customers, market research, training, administration, unsuccessful acquisition efforts, and product development as well as all overhead type costs are charged to expense as incurred.

Expected losses and LAE, investment income, and the remaining costs of servicing the insured or reinsured business, are considered in determining the recoverability of DAC.

Fair Value of Financial Instruments

The Company carries a significant portion of its assets and liabilities at fair value. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (i.e., exit price). The price represents the price available in the principal market for the asset or liability. If there is no principal market, then the price is based on a hypothetical market that maximizes the value received for an asset or minimizes the amount paid for a liability (i.e., the most advantageous market).

Fair value is based on quoted market prices, where available. If listed prices or quotes are not available, fair value is based on either internally developed models that primarily use, as inputs, market-based or independently sourced market parameters, including but not limited to yield curves, interest rates and debt prices or with the assistance of an independent third-party using a discounted cash flow approach and the third party’s proprietary pricing models. In addition to market information, models also incorporate transaction details, such as maturity of the instrument and contractual features designed to reduce the Company’s credit exposure, such as collateral rights as applicable.

Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments include amounts to reflect counterparty credit quality, the Company’s creditworthiness and constraints on liquidity. As markets and products develop and the pricing for certain products becomes more or less transparent, the Company may refine its methodologies and assumptions. During 2018, no changes were made to the Company’s valuation models that had or are expected to have, a material impact on the Company’s consolidated balance sheets or statements of operations and comprehensive income.

The Company’s methods for calculating fair value produce a fair value that may not be indicative of net realizable value or reflective of future fair values. The use of different methodologies or assumptions to determine fair value of certain financial instruments could result in a different estimate of fair value at the reporting date.

The categorization within the fair value hierarchy is determined based on whether the inputs to valuation techniques used to measure fair value are observable or unobservable. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect Company estimates of market assumptions. The fair value hierarchy prioritizes model inputs into three broad levels as follows, with Level 1 being the highest and Level 3 the lowest. An asset's or liability’s categorization is based on the lowest level of significant input to its valuation.

Level 1—Quoted prices for identical instruments in active markets. The Company generally defines an active market as a market in which trading occurs at significant volumes. Active markets generally are more liquid and have a lower bid-ask spread than an inactive market.

Level 2—Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and observable inputs other than quoted prices, such as interest rates or yield curves and other inputs derived from or corroborated by observable market inputs.

Level 3—Model derived valuations in which one or more significant inputs or significant value drivers are unobservable. Financial instruments are considered Level 3 when their values are determined using pricing models, discounted cash flow methodologies or similar techniques and at least one significant model assumption or input is unobservable. Level 3 financial instruments also include those for which the determination of fair value requires significant management judgment or estimation.

Salvage and Subrogation Recoverable

When the Company becomes entitled to the cash flow from the underlying collateral of an insured exposure under salvage and subrogation rights as a result of a claim payment or estimated future claim payment, it reduces the expected loss to be paid on the contract. Such reduction in expected loss to be paid can result in one of the following:


•	a reduction in the corresponding loss and LAE reserve with a benefit to the income statement,


•	no entry recorded, if “total loss” is not in excess of deferred premium revenue, or


•	the recording of a salvage asset with a benefit to the income statement if the transaction is in a net recovery position at the reporting date.

The ceded component of salvage and subrogation recoverable is recorded in the line item other liabilities.

Accounting Models

Expected Loss to be Expensed

Expected loss to be expensed represents past or expected future net claim payments that have not yet been expensed. Such amounts will be expensed in future periods as deferred premium revenue amortizes into income on financial guaranty insurance policies. Expected loss to be expensed is the Company's projection of incurred losses that will be recognized in future periods, excluding accretion of discount.

Credit Derivatives

Credit derivatives are recorded at fair value. Changes in fair value are recorded in “net change in fair value of credit derivatives” on the consolidated statement of operations. Realized gains (losses) and other settlements on credit derivatives include credit derivative premiums received and receivable for credit protection the Company has sold under its insured CDS contracts, premiums paid and payable for credit protection the Company has purchased, claims paid and payable and received and receivable related to insured credit events under these contracts, ceding commission expense or income and any realized gains or losses on termination. The fair value of credit derivatives is reflected as either net assets or net liabilities determined on a contract by contract basis in the Company's consolidated balance sheets. See Note 7, Fair Value Measurement, for a discussion on the fair value methodology for credit derivatives.

Consolidation, Variable Interest Entity

The Company evaluates whether it is the primary beneficiary of its VIEs. If the Company concludes that it is the primary beneficiary, it is required to consolidate the entire VIE in the Company's financial statements and eliminate the effects of the financial guaranty insurance contracts issued by AGM and AGC on the consolidated FG VIEs’ debt obligations.

The primary beneficiary of a VIE is the enterprise that has both 1) the power to direct the activities of a VIE that most significantly impact the entity's economic performance; and 2) the obligation to absorb losses of the entity that could potentially be significant to the VIE or the right to receive benefits from the entity that could potentially be significant to the VIE.

As part of the terms of its financial guaranty contracts, the Company, under its insurance contract, obtains certain protective rights with respect to the VIE that give the Company additional controls over a VIE. These protective rights are triggered by the occurrence of certain events, such as failure to be in compliance with a covenant due to poor deal performance or a deterioration in a servicer or collateral manager's financial condition. At deal inception, the Company typically is not deemed to control a VIE; however, once a trigger event occurs, the Company's control of the VIE typically increases. The Company continuously evaluates its power to direct the activities that most significantly impact the economic performance of VIEs that have debt obligations insured by the Company and, accordingly, where the Company is obligated to absorb VIE losses or receive benefits that could potentially be significant to the VIE. The Company is deemed to be the control party for certain VIEs under GAAP, typically when its protective rights give it the power to both terminate and replace the deal servicer, which are characteristics specific to the Company's financial guaranty contracts. If the protective rights that could make the Company the control party have not been triggered, then the VIE is not consolidated. If the Company is deemed no longer to have those protective rights, the VIE is deconsolidated.

The FG VIEs’ liabilities that are insured by the Company are considered to be with recourse, because the Company guarantees the payment of principal and interest regardless of the performance of the related FG VIEs’ assets. FG VIEs’ liabilities that are not insured by the Company are considered to be without recourse, because the payment of principal and interest of these liabilities is wholly dependent on the performance of the FG VIEs’ assets.

The Company has limited contractual rights to obtain the financial records of its consolidated FG VIEs. The FG VIEs do not prepare separate GAAP financial statements; therefore, the Company compiles GAAP financial information for them based on trustee reports prepared by and received from third parties. Such trustee reports are not available to the Company until approximately 30 days after the end of any given period. The time required to perform adequate reconciliations and analyses of the information in these trustee reports results in a one quarter lag in reporting the FG VIEs’ activities. The Company records the fair value of FG VIEs’ assets and liabilities based on modeled prices. The Company updates the model assumptions each reporting period for the most recent available information, which incorporates the impact of material events that may have occurred since the quarter lag date. The net change in the fair value of consolidated FG VIEs’ assets and liabilities is recorded in "fair value gains (losses) on FG VIEs" in the consolidated statements of operations, except for change in fair value of FG VIEs’ liabilities with recourse caused by changes in ISCR which is now separately presented in OCI, effective January 1, 2018 as described below. Interest income and interest expense are derived from the trustee reports and also included in "fair value gains (losses) on FG VIEs." The Company has elected the fair value option for assets and liabilities classified as FG VIEs’ assets and liabilities because the carrying amount transition method was not practical.

The cash flows generated by the FG VIEs’ assets are classified as cash flows from investing activities. Paydowns of FG liabilities are supported by the cash flows generated by FG VIEs’ assets, and for liabilities with recourse, possibly claim payments made by AGM or AGC under its financial guaranty insurance contracts. Paydowns of FG liabilities both with and without recourse are classified as cash flows used in financing activities. Interest income, interest expense and other expenses of the FG VIEs’ assets and liabilities are classified as operating cash flows. Claim payments made by AGC and AGM under the financial guaranty contracts issued to the FG VIEs are eliminated upon consolidation and therefore such claim payments are treated as paydowns of FG VIEs’ liabilities as a financing activity as opposed to an operating activity of AGM and AGC.

Investments and Cash

The vast majority of the Company's investment portfolio consists of fixed-maturity and short-term investments, classified as available-for-sale at the time of purchase (approximately 99.5% based on fair value as of December 31, 2018), and therefore carried at fair value. Changes in fair value for other-than-temporarily-impaired securities are bifurcated between credit losses and non-credit changes in fair value. The credit loss on other-than-temporarily-impaired securities is recorded in the statement of operations and the non-credit component of the change in fair value of securities is recorded in OCI. For securities in an unrealized loss position where the Company has the intent to sell or it is more-likely-than-not that it will be required to sell the security before recovery, the entire impairment loss (i.e., the difference between the security's fair value and its amortized cost) is recorded in the consolidated statements of operations. Credit losses reduce the amortized cost of impaired securities. The amortized cost basis is adjusted for accretion and amortization (using the effective interest method) with a corresponding entry recorded in net investment income.

Realized gains and losses on sales of investments are determined using the specific identification method. Realized loss includes amounts recorded for other-than-temporary impairments (OTTI) on debt securities and the declines in fair value of securities for which the Company has the intent to sell the security or inability to hold until recovery of amortized cost.

For mortgage‑backed securities, and any other holdings for which there is prepayment risk, prepayment assumptions are evaluated and revised as necessary. Any necessary adjustments due to changes in effective yields and maturities are recognized in net investment income using the retrospective method.

Loss mitigation securities are generally purchased at a discount and are accounted for based on their underlying investment type, excluding the effects of the Company’s insurance. Interest income on loss mitigation securities is recognized on a level yield basis over the remaining life of the security.

Short-term investments, which are those investments with a maturity of less than one year at time of purchase, are carried at fair value and include amounts deposited in money market funds.

Other invested assets, as of December 31, 2018, primarily include an investment in the limited partnership interest of a fund that invests in the equity of private equity managers and a minority interest in an independent investment advisory firm specializing in separately managed accounts, both of which are accounted for under the equity method.

Income Tax

The provision for income taxes consists of an amount for taxes currently payable and an amount for deferred taxes. Deferred income taxes are provided for temporary differences between the financial statement carrying amounts and tax bases of assets and liabilities, using enacted rates in effect for the year in which the differences are expected to reverse. A valuation allowance is recorded to reduce the deferred tax asset to an amount that is more likely than not to be realized.

Non-interest-bearing tax and loss bonds are purchased in the amount of the tax benefit that results from deducting contingency reserves as provided under Internal Revenue Code Section 832(e). The Company records the purchase of tax and loss bonds in deferred taxes.

The Company recognizes tax benefits only if a tax position is “more likely than not” to prevail.

Reinsurance Accounting

For business assumed and ceded, the accounting model of the underlying direct financial guaranty contract dictates the accounting model used for the reinsurance contract (except for those eliminated as FG VIEs). For any assumed or ceded financial guaranty insurance premiums and losses, the accounting models described in Note 6 are followed. For any assumed or ceded credit derivative contracts, the accounting model in Note 8 is followed

Share-based Compensation

Share-based compensation expense is based on the grant date fair value using the grant date closing price, the lattice, Monte Carlo or Black-Scholes-Merton (Black-Scholes) pricing models. The Company amortizes the fair value of share-based awards on a straight-line basis over the requisite service periods of the awards, which are generally the vesting periods, with the exception of retirement‑eligible employees. For retirement-eligible employees, certain awards contain retirement provisions and therefore are amortized over the period through the date the employee first becomes eligible to retire and is no longer required to provide service to earn part or all of the award.

The fair value of each award under the Assured Guaranty Ltd. Employee Stock Purchase Plan is estimated at the beginning of each offering period using the Black-Scholes option valuation model.

The expense for Performance Retention Plan awards is recognized straight-line over the requisite service period, with the exception of retirement eligible employees. For retirement eligible employees, the expense is recognized immediately.

Compensation Related Costs

The fair value of each award under the Assured Guaranty Ltd. Employee Stock Purchase Plan is estimated at the beginning of each offering period using the Black-Scholes option valuation model.

Cash and Cash Equivalents

Cash consists of cash on hand and demand deposits. As a result of the lag in reporting FG VIEs, cash and short-term investments do not reflect cash outflow to the holders of the debt issued by the FG VIEs for claim payments made by the Company's insurance subsidiaries to the consolidated FG VIEs until the subsequent reporting period.

Loss and Loss Adjustment Expense Reserve

Loss and LAE Reserve

Loss and LAE reserve reported on the balance sheet relates only to direct and assumed reinsurance contracts that are accounted for as insurance, substantially all of which are financial guaranty insurance contracts. The corresponding reserve ceded to reinsurers is reported as reinsurance recoverable on unpaid losses and reported in other assets. As discussed in Note 7, Fair Value Measurement, contracts that meet the definition of a derivative, as well as consolidated FG VIEs’ assets and liabilities, are recorded separately at fair value. Any expected losses related to consolidated FG VIEs are eliminated upon consolidation.

Under financial guaranty insurance accounting, the sum of unearned premium reserve and loss and LAE reserve represents the Company's stand‑ready obligation. Unearned premium reserve is deferred premium revenue, less claim payments and recoveries received that have not yet been recognized in the statement of operations (contra-paid). At contract inception, the entire stand-ready obligation is represented by unearned premium reserve. A loss and LAE reserve for an insurance contract is recorded only to the extent, and for the amount, that expected loss to be paid plus contra-paid (“total losses”) exceed the deferred premium revenue, on a contract by contract basis. As a result, the Company has expected loss to be paid that has not yet been expensed. Such amounts will be recognized in future periods as deferred premium revenue amortizes into income.

When a claim or LAE payment is made on a contract, it first reduces any recorded loss and LAE reserve. To the extent there is no loss and LAE reserve on a contract, then such claim payment is recorded as “contra-paid,” which reduces the unearned premium reserve. The contra-paid is recognized in the line item “loss and LAE” in the consolidated statement of operations when and for the amount that total losses exceed the remaining deferred premium revenue on the insurance contract. Loss and LAE in the consolidated statement of operations is presented net of cessions to reinsurers.

Commitments and Contingencies

Accounting Policy

The Company establishes accruals for litigation and regulatory matters to the extent it is probable that a loss has been incurred and the amount of that loss can be reasonably estimated. For litigation and regulatory matters where a loss may be reasonably possible, but not probable, or is probable but not reasonably estimable, no accrual is established, but if the matter is material, it is disclosed, including matters discussed below. The Company reviews relevant information with respect to its litigation and regulatory matters on a quarterly basis and updates its accruals, disclosures and estimates of reasonably possible loss based on such reviews.

Earnings Per Share

The Company computes EPS using a two-class method, which is an earnings allocation formula that determines EPS for (i) each class of common stock (the Company has a single class of common stock), and (ii) participating securities according to dividends declared (or accumulated) and participation rights in undistributed earnings. Restricted stock awards and share units under the AGC supplemental executive retirement plan (AGC SERP) are considered participating securities as they received non-forfeitable rights to dividends (or dividend equivalents) similar to common stock.

Basic EPS is calculated by dividing net (loss) income available to common shareholders of Assured Guaranty by the weighted‑average number of common shares outstanding during the period. Diluted EPS adjusts basic EPS for the effects of restricted stock, restricted stock units, stock options and other potentially dilutive financial instruments (dilutive securities), only in the periods in which such effect is dilutive. The effect of the dilutive securities is reflected in diluted EPS by application of the more dilutive of (1) the treasury stock method or (2) the two-class method assuming nonvested shares are not converted into common shares.