Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2013

Property, Plant and Equipment [Line Items]

Developments on Our New and Maturing Programs

A significant portion of the Company's future revenues is expected to be derived from new and maturing programs, most notably the B787, A350 XWB, G650 and G280, on which we may be contracted to provide design and engineering services, recurring production, or both. There are several risks inherent to such new and maturing programs. In the design and engineering phase, we may incur costs in excess of our forecasts due to several factors, including cost overruns, customer-directed change orders and delays in the overall program. We may also incur higher than expected recurring production costs, which may be caused by a variety of factors, including the future impact of engineering changes (or other change orders) or our inability to secure contracts with our suppliers at projected cost levels. Our ability to recover these excess costs from the customer will depend on several factors, including our rights under our contracts for the new and maturing programs. In determining our profits and losses in accordance with the percentage-of-completion method of contract accounting, we are required to make significant assumptions regarding our future costs and revenues, as well as the estimated number of units to be manufactured under the contract and other variables. We continually review and update our assumptions based on market trends and our most recent experience. If we make material changes to our assumptions, such as a reduction in the estimated number of units to be produced under the contract (which could be caused by emerging market trends or other factors), an increase in future production costs or a change in the recoverability of increased design or production costs, we may experience negative cumulative catch-up adjustments related to revenues previously recognized. In some cases, we may recognize forward loss amounts.

Research and Development

Research and development includes costs incurred for experimentation, design and testing and are expensed as incurred as required under FASB authoritative guidance pertaining to accounting for research and development costs.

Joint Venture

The value of the Company's 31.5% ownership interest in Taikoo Spirit AeroSystems Composite Co. Ltd. totaled $1.4 at December 31, 2013 and is accounted for under the equity method of accounting.

Cash and Cash Equivalents

Cash and cash equivalents represent all highly liquid investments with original maturities of three months or less.

Accounts Receivable

Accounts receivable are recorded at the invoiced amount and do not bear interest. Consistent with industry practice, the Company classifies unbilled receivables related to contracts accounted for under the long-term contract method of accounting, as current. The Company determines an allowance for doubtful accounts based on a review of outstanding receivables. Account balances are charged off against the allowance after the potential for recovery is considered remote. The Company's allowance for doubtful accounts was approximately $0.2 and $4.3 at December 31, 2013 and December 31, 2012, respectively.

Accounts receivable, net includes unbilled receivables on long-term aerospace contracts, comprised principally of revenue recognized on contracts for which amounts were earned but not contractually billable as of the balance sheet date, or amounts earned in which the recovery will occur over the term of the contract, which could exceed one year.

Inventory

Raw materials are stated at lower of cost (principally on an actual or average cost basis) or market. Inventoried costs attributed to units delivered under long-term contracts are based on the estimated average cost of all units expected to be produced and are determined under the learning curve concept which anticipates a predictable decrease in unit costs as tasks and production techniques become more efficient through repetition and supply chain costs are reduced as contracts are negotiated and design changes result in lower cost. This usually results in an increase in inventory (referred to as "excess-over-average" or "deferred production costs") during the early years of a contract. These costs are deferred only to the extent the amount of actual or expected excess-over-average is reasonably expected to be fully offset by lower-than-average costs in future periods of a contract. If in-process inventory plus estimated costs to complete a specific contract exceed the actual plus anticipated remaining sales value of such contract, such excess is charged to cost of sales in the period the loss becomes known, thus reducing inventory to estimated realizable value. Costs in inventory include amounts relating to contracts with long production cycles, some of which are not expected to be realized within one year.

The Company reviews its general stock materials and spare parts inventory each quarter to identify impaired inventory, including excess or obsolete inventory, based on historical sales trends and expected production usage. Impaired inventories are written off to work-in-process in the period identified.

Total inventory includes deferred production costs for the excess of production costs over the estimated average cost per ship set, and credit balances for favorable variances on contracts between actual costs incurred and the estimated average cost per ship set for units delivered under the current production blocks. Recovery of excess over average deferred production costs is dependent on the number of ship sets ultimately sold and the ultimate selling prices and lower production costs associated with future production under these contract blocks. Work-in-process inventory also includes non-recurring production costs. Non-recurring production costs include design and engineering costs and test articles.

Finished goods inventory is stated at its estimated average per unit cost based on all units expected to be produced.

Capitalized pre-production costs include certain contract costs, including applicable overhead, incurred before a product is manufactured on a recurring basis. Significant customer directed work changes can also cause pre-production costs to be incurred. These costs are typically recovered over a certain number of ship set deliveries.

Property, Plant and Equipment

Property, plant and equipment are stated at cost less accumulated depreciation. Depreciation is applied using a straight-line method over the useful lives of the respective assets as described in the following table:



	Estimated Useful Life
Land improvements	20 years
Buildings	45 years
Machinery and equipment	3-20 years
Tooling — Airplane program — B787, Rolls-Royce	5-20 years
Tooling — Airplane program — all others	2-10 years
Capitalized software	3-7 years

We capitalize certain costs, such as software coding, installation and testing, that are incurred to purchase or to create and implement internal-use computer software in accordance with FASB authoritative guidance pertaining to capitalization of cost for internal-use software. Our capitalization policy includes specifications that the software must have a service life greater than one year, is legally and substantially owned by Spirit, and has an acquisition cost of greater than $0.1.

Intangible Assets and Goodwill

Intangible Assets

Intangible assets are initially recorded at estimated fair value and are comprised of patents, favorable leasehold interests, and customer relationships that are amortized on a straight-line basis over their estimated useful lives, ranging from 6 to 16 years for patents, 14 to 24 years for favorable leasehold interests, and 8 years for customer relationships.

Impairment or Disposal of Long-Lived Assets, and Goodwill

Impairment or Disposal of Long-Lived Assets and Goodwill

Spirit reviews capital and amortizing intangible assets (long-lived assets) for impairment on an annual basis or whenever events or changes in circumstances indicate that the carrying amount may not be recoverable in accordance with FASB authoritative guidance on accounting for the impairment or disposal of long-lived assets. Under the standard, assets must be classified as either held-for-use or available-for-sale. An impairment loss is recognized when the carrying amount of an asset that is held for use exceeds the projected undiscounted future net cash flows expected from its use and disposal, and is measured as the amount by which the carrying amount of the asset exceeds its fair value, which is measured by discounted cash flows when quoted market prices are not available. For assets available-for-sale, an impairment loss is recognized when the carrying amount exceeds the fair value less cost to sell. The Company performs an annual impairment test for goodwill in the fourth quarter of each year, in accordance with FASB authoritative guidance pertaining to goodwill and other intangible assets, or more frequently, if an event occurs or circumstances change that would more likely than not reduce fair value below current value. Recent impairment testing has indicated no need for impairment.

Deferred Financing Costs

Costs relating to long-term debt are deferred and included in other long-term assets. These costs are amortized over the term of the related debt or debt facilities, and are included as a component of interest expense.

Derivative Instruments and Hedging Activities

Derivative Instruments and Hedging Activity

We use derivative financial instruments to manage the economic impact of fluctuations in currency exchange rates and interest rates. To account for our derivative financial instruments, we follow the FASB guidance on accounting for derivatives and hedges. Derivative financial instruments are recognized on the Consolidated Balance Sheets as either assets or liabilities and are measured at fair value. Changes in fair value of derivatives are recorded each period in earnings or accumulated other comprehensive income, depending on whether a derivative is effective as part of a hedge transaction, and if it is, the type of hedge transaction. Gains and losses on derivative instruments reported in other comprehensive income are subsequently included in earnings in the periods in which earnings are affected by the hedged item or when the hedge is no longer effective. We present the cash flows associated with our derivatives as a component of the operating or investing sections of the statement of cash flows. Our use of derivatives has generally been limited to interest rate swaps and foreign currency forward contracts. The Company enters into foreign currency forward contracts to reduce the risks associated with the changes in foreign exchange rates on sales and cost of sales denominated in currencies other than the entities' functional currency.

Fair Value of Financial Instruments

Financial instruments are measured in accordance with FASB authoritative guidance related to fair value measurements. This guidance clarifies the definition of fair value, prescribes methods for measuring fair value, establishes a fair value hierarchy based on the inputs used to measure fair value, and expands disclosures about fair value measurements. See Note 12, "Fair Value Measurements."

Income Taxes

Income taxes are accounted for in accordance with FASB authoritative guidance on accounting for income taxes. Deferred income tax assets and liabilities are recognized for the future income tax consequences attributable to differences between the financial statement carrying amounts for existing assets and liabilities and their respective tax bases. A valuation allowance is recorded to reduce deferred income tax assets to an amount that in management's opinion will ultimately be realized. Tax rate changes impacting these assets and liabilities are recognized in the period during which the rate change occurs.

We record an income tax expense or benefit based on the net income earned or net loss incurred in each tax jurisdiction and at the tax rate applicable to that income or loss. In the ordinary course of business, there are transactions for which the ultimate tax outcome is uncertain. These uncertainties are accounted for in accordance with FASB authoritative guidance on accounting for the uncertainty in income taxes. The final tax outcome for these matters may be different than management's original estimates made in determining the income tax provision. A change to these estimates could impact the effective tax rate and net income or loss in subsequent periods. We use the flow-through accounting method for tax credits. Under this method, tax credits reduce income tax expense.

Stock-Based Compensation and Other Share-based Payments

Stock-Based Compensation and Other Share-Based Payments

Many of the Company's employees are participants in various stock compensation plans. The Company accounts for stock option plans, restricted share plans and other stock-based payments in accordance with FASB authoritative guidance pertaining to share-based payment. The expense attributable to the Company's employees is recognized over the period the amounts are earned and vested, as described in Note 18 "Stock Compensation."

Service and Product Warranties And Extraordinary Rework Provision

Service and Product Warranties and Extraordinary Rework

Provisions for estimated expenses related to service and product warranties and certain extraordinary rework are made at the time products are sold. These estimates are established using historical information on the nature, frequency and average cost of warranty claims.

New Accounting Pronouncements

In July 2013, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update ("ASU") No. 2013-11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists (FASB ASU 2013-11). This update was issued to give explicit guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The provisions of FASB ASU 2013-11 are effective for fiscal years and interim periods beginning after December 15, 2013. The adoption of the provisions of this update will not have a material impact on the Company’s consolidated financial statements.

In July 2013, the FASB issued ASU No. 2013-10, Inclusion of the Fed Funds Effective Swap Rate (or Overnight Index Swap Rate) as a Benchmark Interest Rate for Hedge Accounting Purposes (FASBASU 2013-10). The amendments in this update permit the Fed Funds Effective Swap Rate (OIS) to be used as a U.S. benchmark interest rate for hedge accounting purposes, in addition to UST and LIBOR. The amendments also remove the restriction on using different benchmark rates for similar hedges. The amendment is effective for qualifying new or redesignated hedging relationship entered into on or after July 17, 2013. The adoption of the provisions of ASU 2013-10 did not have a material impact on the Company’s consolidated financial statements.

In February 2013, the FASB issued ASU No. 2013-02, Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income (FASB ASU 2013-02). The amendment in this update requires an entity to report the effect of significant reclassifications out of accumulated other comprehensive income on the respective line items in net income if the amount being reclassified is required under GAAP to be reclassified in its entirety to net income. The provisions of FASB ASU 2013-02 were effective for annual and interim periods beginning after December 15, 2012. The adoption of the provisions of FASB ASU 2013-02 did not have a material impact on the Company’s consolidated financial statements.

In July 2012, the FASB issued ASU No. 2012-2, Intangibles — Goodwill and Other (Topic 350): Testing Indefinite-Lived Intangible Assets for Impairment (FASB ASU 2012-2). The amendment in this update permits an entity first to assess qualitative factors to determine whether it is more likely than not that an indefinite-lived intangible asset is impaired as a basis for determining whether it is necessary to perform the quantitative impairment test in accordance with Subtopic 350-30, Intangibles — Goodwill and Other — General Intangibles Other than Goodwill. The provisions of FASB ASU 2012-2 were effective for annual and interim impairment tests performed in fiscal years beginning after September 15, 2012. The adoption of the provisions of FASB ASU 2012-2 did not have a material impact on the Company's consolidated financial statements.

In December 2011, the FASB issued ASU 2011-11, Balance Sheet (Topic 210): Disclosures about Offsetting Assets and Liabilities (FASB ASU 2011-11). The amendments in this update require an entity to disclose information about offsetting and related arrangements to enable users of its financial statements to understand the effect of those arrangements on its financial position. The intention is to enhance required disclosures by improving information about financial instruments and derivative instruments that are either offset in accordance with FASB guidance or are subject to an enforceable master netting arrangement; irrespective of whether they are offset in accordance with FASB guidance. The provisions of FASB ASU 2011-11 have been effective for annual reporting periods beginning on or after January 1, 2013. The adoption of the provisions of FASB ASU 2011-11 has not had a material impact on the Company's consolidated financial statements.

Software [Member] | Minimum [Member]

Property, Plant and Equipment [Line Items]

Property, Plant and Equipment

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