Spirit AeroSystems (SPR) 10-Q 29 Apr 16 2016 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2016	Apr. 22, 2016
Class Of Stock [Line Items]
Entity Registrant Name	Spirit AeroSystems Holdings, Inc.
Entity Central Index Key	1,364,885
Document Type	10-Q
Document Period End Date	Mar. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Amendment Flag	false
Trading Symbol	SPR
Class A [Member]
Class Of Stock [Line Items]
Entity Common Stock, Shares Outstanding		132,378,113
Class B [Member]
Class Of Stock [Line Items]
Entity Common Stock, Shares Outstanding		121

Consolidated Statements of Oper

Consolidated Statements of Operations (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Apr. 02, 2015
Revenues [Abstract]
Net revenues	$ 1,681.6	$ 1,742.2
Operating costs and expenses
Cost of sales	1,359	1,448.3
Selling, general and administrative	50	51.6
Research and development	6.1	7
Total operating costs and expenses	1,415.1	1,506.9
Operating income	266.5	235.3
Interest expense and financing fee amortization	(11.4)	(17.9)
Other expense, net	2.2	6.4
Income before income taxes and equity in net income of affiliate	252.9	211
Income tax provision	(81.9)	(29.4)
Income before equity in net income of affiliate	171	181.6
Equity in net income of affiliate	0.6	0.3
Net income	$ 171.6	$ 181.9
Earnings per share
Basic (in dollars per share)	$ 1.30	$ 1.31
Diluted (in dollars per share)	$ 1.29	$ 1.30

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Apr. 02, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 171.6	$ 181.9
Changes in other comprehensive loss, net of tax:
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	0	1.1
Foreign currency translation adjustments	(7.6)	(12.7)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	0.8	0
Unrealized foreign exchange loss on intercompany loan, net of tax effect of $0.3 and $0.6 for the three months ended, respectively	(1.2)	(2.4)
Total other comprehensive loss	(8)	(14)
Total comprehensive income	$ 163.6	$ 167.9

Consolidated Statements of Com4

Consolidated Statements of Comprehensive Income (Unaudited) (Parentheticals) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Apr. 02, 2015
Statement of Comprehensive Income [Abstract]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	$ 0	$ 0
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax	(0.2)	0
Unrealized exchange (loss) on intercompany loan, tax	$ 0.3	$ 0.6

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 822.9	$ 957.3
Accounts receivable, net	683.2	537
Inventory, net	1,808	1,774.4
Other current assets	27.5	30.4
Total current assets	3,341.6	3,299.1
Property, plant and equipment, net	1,947.2	1,950.7
Pension assets	242.7	246.9
Other assets	255.4	280.8
Total assets	5,786.9	5,777.5
Current liabilities
Accounts payable	645.8	618.2
Accrued expenses	225.5	230.2
Profit sharing	18.4	61.6
Current portion of long-term debt	42.9	35.6
Advance payments, short-term	192.5	178.3
Deferred revenue, short-term	312.1	285.5
Deferred grant income liability - current	12.6	11.9
Other current liabilities	88.7	37.7
Total current liabilities	1,538.5	1,459
Liabilities Noncurrent
Long-term debt	1,083.4	1,097.6
Advance payments, long-term	452.9	507.4
Pension/OPEB obligation	70.2	67.7
Deferred grant income liability - non-current	78.2	82.3
Deferred revenue and other deferred credits	172.4	170
Other liabilities	270.6	273.5
Stockholders' Equity Attributable to Parent [Abstract]
Preferred stock, par value $0.01, 10,000,000 shares authorized, no shares issued	0	0
Additional Paid in Capital [Abstract]
Additional paid-in capital	1,054	1,051.6
AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract
Accumulated other comprehensive loss	(168.5)	(160.5)
Retained Earnings Accumulated Deficit [Abstract]
Retained earnings	1,827.8	1,656.2
Treasury Stock, Value	594.4	429.2
Total shareholders’ equity	2,120.2	2,119.5
Noncontrolling interest	0.5	0.5
Total equity	2,120.7	2,120
Total liabilities and equity	5,786.9	5,777.5
Class A [Member]
Stockholders' Equity Attributable to Parent [Abstract]
Common stock	1.3	1.4
Class B [Member]
Stockholders' Equity Attributable to Parent [Abstract]
Common stock	$ 0	$ 0

Consolidated Balance Sheets (U6

Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares	Mar. 31, 2016	Dec. 31, 2015
Shareholders' equity
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Treasury Stock, Shares	13,306,381	9,691,865
Class A [Member]
Shareholders' equity
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	132,474,893	135,617,589
Class B [Member]
Shareholders' equity
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	121	121

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Apr. 02, 2015
Operating activities
Net income	$ 171.6	$ 181.9
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation expense	49.4	43.6
Amortization expense	0	0.5
Amortization of deferred financing fees	1.1	4.2
Accretion of customer supply agreement	1	0.4
Employee stock compensation expense	5.3	6.9
Excess tax benefit of share-based payment arrangements	(0.3)	0
Loss (gain) from hedge contracts	0	1.6
Loss from foreign currency transactions	4.6	6.4
Gain (Loss) on Disposition of Property Plant Equipment	2.5	0
Deferred taxes	24.1	1.2
Increase (Decrease) in Pension and Postretirement Obligations	7	(6.1)
Grant income	(2.7)	(2.6)
Equity in net income of affiliate	(0.6)	(0.3)
Changes in assets and liabilities
Accounts receivable	(148.6)	0.3
Inventory, net	(50.6)	33.8
Accounts payable and accrued liabilities	19.9	(10.2)
Profit sharing/deferred compensation	(43.1)	(91.1)
Advance payments	(40.3)	(10.2)
Income taxes receivable/payable	58.2	198
Deferred revenue and other deferred credits	29.9	56.7
Other	5.4	8.7
Net cash provided by operating activities	93.8	423.7
Investing activities
Purchase of property, plant and equipment	(50.4)	(40.3)
Net cash used in investing activities	(50.4)	(40.3)
Financing activities
Proceeds from Issuance of Long-term Debt	0	535
Principal payments of debt	(7.5)	(7.5)
Repayments of Debt	0	(534.9)
Payments Related to Tax Withholding for Share-based Compensation	(2.9)	0
Excess tax benefit of share-based payment arrangements	0.2	0
Debt issuance and financing costs	0	(4.7)
Payments for Repurchase of Common Stock	(165.2)	0
Net cash used in financing activities	(175.4)	(12.1)
Effect of exchange rate changes on cash and cash equivalents	(2.4)	0.3
Net (decrease) increase in cash and cash equivalents for the period	(134.4)	371.6
Cash and cash equivalents, beginning of period	957.3	377.9
Cash and cash equivalents, end of period	$ 822.9	$ 749.5

Organization and Basis of Inter

Organization and Basis of Interim Presentation	3 Months Ended
	Mar. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Basis of Interim Presentation	Organization and Basis of Interim Presentation Spirit AeroSystems Holdings, Inc. ("Holdings" or the "Company") was incorporated in the state of Delaware on February 7, 2005, and commenced operations on June 17, 2005 through the acquisition of Boeing's operations in Wichita, Kansas; Tulsa, Oklahoma; and McAlester, Oklahoma (the "Boeing Acquisition") by an investor group led by Onex Partners LP and Onex Corporation (together with its affiliates, "Onex"). In August 2014, Onex sold its remaining investment in the Company in a secondary offering of the Company's class A common stock. Holdings provides manufacturing and design expertise in a wide range of fuselage, propulsion and wing products and services for aircraft original equipment manufacturers ("OEM") and operators through its subsidiary, Spirit AeroSystems, Inc. ("Spirit"). The Company has its headquarters in Wichita, Kansas, with manufacturing facilities in Tulsa and McAlester, Oklahoma; Prestwick, Scotland; Wichita, Kansas; Kinston, North Carolina and Subang, Malaysia. The Company has assembly facilities in Saint-Nazaire, France, and Chanute, Kansas. The Company is the majority participant in the Kansas Industrial Energy Supply Company ("KIESC"), a tenancy-in-common with other Wichita companies established to purchase natural gas. The Company participates in a joint venture, Taikoo Spirit AeroSystems Composite Co. Ltd. ("TSACCL"), of which Spirit's ownership interest is 31.5% . TSACCL was formed to develop and implement a state of the art composite and metal bond component repair station in the Asia-Pacific region. The accompanying unaudited interim condensed consolidated financial statements include the Company’s financial statements and the financial statements of its majority-owned or controlled subsidiaries and have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and the instructions to Form 10-Q and Article 10 of Regulation S-X. The Company's fiscal quarters are 13 weeks in length. Because the Company's fiscal year ends on December 31, the number of days in the Company's first and fourth quarters varies slightly from year to year. The year-end condensed balance sheet was derived from audited financial statements, but does not include all disclosures required by GAAP. The Company's investment in TSACCL, in which the Company does not have a controlling interest, is accounted for under the equity method. KIESC is fully consolidated as the Company owns 77.8% of the entity’s equity. All intercompany balances and transactions have been eliminated in consolidation. The Company’s U.K. subsidiary uses local currency, the British pound, as its functional currency; the Malaysian subsidiary uses the British pound and the Singapore subsidiary uses the Singapore dollar. All other foreign subsidiaries and branches use the U.S. dollar as their functional currency. As part of the monthly consolidation process, the Company's international entities that have functional currencies other than the U.S. dollar are translated to U.S. dollars using the end-of-month translation rate for balance sheet accounts and average period currency translation rates for revenue and income accounts. In the opinion of management, the accompanying unaudited interim condensed consolidated financial statements contain all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation of the results of operations for the interim periods. The results of operations for the three months ended March 31, 2016 are not necessarily indicative of the results that may be expected for the year ending December 31, 2016. In connection with the preparation of the condensed consolidated financial statements, the Company evaluated subsequent events through the date the financial statements were issued. The interim financial statements should be read in conjunction with the audited consolidated financial statements, including the notes thereto, included in the Company's 2015 Annual Report on Form 10-K filed with the Securities and Exchange Commission (the “SEC”) on February 12, 2016 (the "2015 Form 10-K").

Changes in Estimates

Changes in Estimates	3 Months Ended
	Mar. 31, 2016
Changes in Estimates [Abstract]
Change In Estimate [Text Block]	3. Changes in Estimates The Company has a Company-wide quarterly Estimate at Completion (EAC) process in which management assesses the progress and performance of the Company's contracts. This process requires management to review each program’s progress towards completion by evaluating the program schedule, changes to identified risks and opportunities, changes to estimated contract revenues and estimated contract costs over the current contract block and any outstanding contract matters. Risks and opportunities include management's judgment about the cost associated with a program’s ability to achieve the schedule, technical requirements (e.g., a newly-developed product versus a mature product) and any other contract requirements. The majority of the Company's fixed priced contracts are life of aircraft program contracts. Due to the span of years it may take to complete a contract block and the scope and nature of the work required to be performed on those contracts, the estimation of total revenue and costs at completion is complicated and subject to many variables and, accordingly, is subject to change. When adjustments in estimated total contract block revenue or estimated total cost are required, any changes from prior estimates for delivered units are recognized in the current period as a cumulative catch-up adjustment for the inception-to-date effect of such changes. Cumulative catch-up adjustments are driven by several factors including improved production efficiencies, assumed rate of production, the rate of overhead absorption, changes to scope of work and contract modifications. When estimates of total costs to be incurred on a contract block exceed estimates of total revenue to be earned, a provision for the entire loss on the contract block is recorded in the period in which the loss is determined. Changes in estimates are summarized below: For the Three Months Ended Changes in Estimates March 31, 2016 April 2, 2015 Favorable Cumulative Catch-up Adjustment by Segment Fuselage $ 16.2 $ 2.7 Propulsion 5.9 9.3 Wing 10.1 — Total Favorable Cumulative Catch-up Adjustment $ 32.2 $ 12.0 Changes in Estimates on Loss Programs Fuselage Boeing - All other platforms $ 3.1 $ 2.9 Total Fuselage Change in Estimate on Loss Programs $ 3.1 $ 2.9 Propulsion Boeing - All other platforms $ 5.5 $ — Rolls-Royce BR725 3.4 — Total Propulsion Change in Estimate on Loss Programs $ 8.9 $ — Wing Boeing - All other platforms $ 3.0 $ — Total Wing Change in Estimate on Loss Programs $ 3.0 $ — Total Change in Estimate on Loss Programs $ 15.0 $ 2.9 Total Change in Estimate $ 47.2 $ 14.9 EPS Impact (diluted per share based upon statutory rates) $ 0.22 $ 0.07 The Company is currently working on several maturing programs which are in various stages of production, including the B787, A350 XWB and BR725 programs. These programs carry risks associated with design responsibility, development of production tooling, production inefficiencies during the early phases of production, hiring and training of qualified personnel, increased capital and funding commitments, supplier performance, delivery schedules and unique customer requirements. The Company has previously recorded forward loss charges on these programs. If the risks related to these programs are not mitigated, then the Company could record additional forward loss charges.

Accounts Receivable, net

Accounts Receivable, net	3 Months Ended
	Mar. 31, 2016
Accounts Receivable, Net, Current [Abstract]
Accounts Receivable, net	Accounts Receivable, net Accounts receivable, net consists of the following: March 31, December 31, Trade receivables (1) $ 661.3 $ 524.3 Other 28.0 18.8 Less: allowance for doubtful accounts (6.1 ) (6.1 ) Accounts receivable, net $ 683.2 $ 537.0 (1) Includes unbilled receivables of $32.3 and $30.5 at March 31, 2016 and December 31, 2015, 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 for which the recovery will occur over the term of the contract, which could exceed one year.

Inventory

Inventory	3 Months Ended
	Mar. 31, 2016
Inventory Disclosure [Abstract]
Inventory	Inventory Inventories are summarized as follows: March 31, December 31, Raw materials $ 259.7 $ 253.8 Work-in-process 821.4 854.4 Finished goods 64.6 65.7 Product inventory 1,145.7 1,173.9 Capitalized pre-production 147.9 167.8 Deferred production 1,389.6 1,315.4 Forward loss provision (875.2 ) (882.7 ) Total inventory, net $ 1,808.0 $ 1,774.4 Capitalized pre-production costs include certain contract costs, including applicable overhead, incurred before a product is manufactured on a recurring basis. Significant statement of work changes considered not reimbursable by the customer can also cause pre-production costs to be incurred. These costs are typically amortized over a certain number of shipset deliveries. Capitalized pre-production may be amortized over multiple blocks. See contract block and orders table noted below. Deferred production includes costs for the excess of production costs over the estimated average cost per shipset, and credit balances for favorable variances on contracts between actual costs incurred and the estimated average cost per shipset for units delivered under the current production blocks. Recovery of excess-over-average deferred production costs is dependent on the number of shipsets ultimately sold and the ultimate selling prices and lower production costs associated with future production under these contract blocks. The Company believes these amounts, net of forward loss provisions, will be fully recovered over the contract block quantities noted in the contract block and orders table below. Should orders not materialize in future periods to fulfill the block, potential forward loss charges may be necessary to the extent the final delivered quantity does not absorb deferred inventory costs. Sales significantly under estimates or costs significantly over estimates could result in losses on these contracts in future periods. Capitalized pre-production and deferred production inventories are at risk to the extent that the Company does not achieve the orders in the forecasted blocks or if future actual costs exceed current projected estimates, as those categories of inventory are recoverable over future deliveries. Forward loss provisions on contract blocks are recorded in the period in which they become evident and included in inventory with any remaining amount reflected in accrued contract liabilities. Non-recurring production costs include design and engineering costs and test articles. Inventories are summarized by platform and costs below: March 31, 2016 Product Inventory Inventory Non-Recurring Capitalized Pre- Production Deferred Production Forward Loss Provision Total Inventory, net March 31, 2016 B787 213.8 9.9 26.6 591.8 (606.0 ) 236.1 Boeing - All other platforms 484.8 17.0 5.4 (1.9 ) (17.3 ) 488.0 A350 XWB 153.3 37.3 92.2 685.2 (113.7 ) 854.3 Airbus - All other platforms 89.6 — — 9.0 — 98.6 Rolls-Royce BR725 (1) 15.4 — 23.7 99.1 (138.2 ) — GCS&S 56.1 — — — — 56.1 Other platforms 67.3 1.2 — 6.4 — 74.9 Total $ 1,080.3 $ 65.4 $ 147.9 $ 1,389.6 $ (875.2 ) $ 1,808.0 December 31, 2015 Product Inventory Inventory Non-Recurring Capitalized Pre- Production Deferred Production Forward Loss Provision Total Inventory, net December 31, 2015 B787 222.7 9.8 42.1 558.5 (606.0 ) 227.1 Boeing - All other platforms 491.9 23.0 5.6 (32.8 ) (28.8 ) 458.9 A350 XWB 148.7 35.3 94.2 679.4 (113.8 ) 843.8 Airbus - All other platforms 90.8 — — 9.2 — 100.0 Rolls-Royce BR725 (1) 12.5 — 25.9 95.7 (134.1 ) — GCS&S 54.3 — — — — 54.3 Other platforms 80.0 4.9 — 5.4 — 90.3 Total $ 1,100.9 $ 73.0 $ 167.8 $ 1,315.4 $ (882.7 ) $ 1,774.4 (1) Forward loss charges recorded in prior periods on the Rolls-Royce BR725 program exceeded the total inventory balance. The excess of the charge over program inventory is classified as a contract liability and reported in other current liabilities on the Condensed Consolidated Balance Sheet. The total contract liability was $4.6 and $12.2 as of March 31, 2016 and December 31, 2015, respectively. Significant amortization of capitalized pre-production and deferred production inventory has occurred over the following contract block deliveries and will continue to occur over the following contract blocks: Model Current Block Deliveries Contract Block Quantity Orders (1) B787 441 500 746 A350 XWB (2) 78 400 758 Rolls-Royce BR725 206 350 257 (1) Order amounts are obtained from the published firm-order backlogs of Airbus and Boeing. For Rolls-Royce BR725, orders represent purchase orders received from OEMs and are not reflective of OEM sales backlog. Orders reported are total block orders, including delivered units. (2) Capitalized pre-production amortization over 800 shipsets.

Property, Plant and Equipment

Property, Plant and Equipment	3 Months Ended
	Mar. 31, 2016
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment, net	Property, Plant and Equipment, net Property, plant and equipment, net consists of the following: March 31, December 31, 2015 Land $ 16.1 $ 16.5 Buildings (including improvements) 595.2 585.4 Machinery and equipment 1,248.9 1,210.6 Tooling 943.3 927.2 Capitalized software 230.9 219.7 Construction-in-progress 244.2 278.6 Total 3,278.6 3,238.0 Less: accumulated depreciation (1,331.4 ) (1,287.3 ) Property, plant and equipment, net $ 1,947.2 $ 1,950.7 Interest costs associated with construction-in-progress are capitalized until the assets are completed and ready for use. Capitalized interest was $2.1 and $1.3 for the three months ended March 31, 2016 and April 2, 2015, respectively. Repair and maintenance costs are expensed as incurred. The Company recognized repair and maintenance costs of $26.6 and $30.3 for the three months ended March 31, 2016 and April 2, 2015, respectively. The Company capitalizes certain costs, such as software coding, installation and testing, that are incurred to purchase or to create and implement internal-use computer software. Depreciation expense related to capitalized software was $4.5 and $4.2 for the three months ended March 31, 2016 and April 2, 2015, respectively. The Company 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. The Company evaluated its long-lived assets at its locations and determined no impairment was necessary for the periods ended March 31, 2016 and April 2, 2015.

Other Assets

Other Assets	3 Months Ended
	Mar. 31, 2016
Other Assets, Noncurrent [Abstract]
Other Assets	Other Assets Other assets are summarized as follows: March 31, December 31, Intangible assets Patents $ 1.9 $ 1.9 Favorable leasehold interests 6.3 6.3 Total intangible assets 8.2 8.2 Less: Accumulated amortization - patents (1.6 ) (1.6 ) Accumulated amortization - favorable leasehold interest (3.9 ) (3.8 ) Intangible assets, net 2.7 2.8 Deferred financing Deferred financing costs 105.8 105.8 Less: Accumulated amortization - deferred financing costs (1) (87.4 ) (86.3 ) Deferred financing costs, net 18.4 19.5 Other Goodwill - Europe 2.6 2.7 Equity in net assets of affiliates 3.7 3.2 Customer supply agreement (2) 25.6 29.3 Restricted Cash 19.9 19.9 Deferred Tax Asset - non-current (3) 141.8 162.8 Other 40.7 40.6 Total $ 255.4 $ 280.8 (1) Includes charges related to debt extinguishment of zero and $3.1 for the periods ended March 31, 2016 and December 31, 2015, respectively. (2) Under agreements with customers and a supplier, certain payments accounted for as consideration paid by the Company to a customer and supplier are being amortized as a reduction to net revenues. (3) For further detail, see Note 16, "Income Taxes."

Advance Payments and Deferred R

Advance Payments and Deferred Revenue/Credits	3 Months Ended
	Mar. 31, 2016
Advance Payments And Deferred Revenue Credits [Abstract]
Advance Payments And Deferred Revenue Credits	Advance Payments and Deferred Revenue/Credits Advance payments. Advance payments are those payments made to Spirit by customers in contemplation of the future performance of services, receipt of goods, incurrence of expenditures or for other assets to be provided by Spirit under a contract and are repayable if such obligation is not satisfied. The amount of advance payments to be recovered against production units expected to be delivered within a year is classified as a short-term liability on the Company's consolidated balance sheet, with the balance of the unliquidated advance payments classified as a long-term liability. On April 8, 2014, the Company signed a memorandum of agreement with Boeing which suspended advance repayments related to the B787 program for a period of twelve months beginning April 1, 2014. Repayment recommenced on April 1, 2015 and any repayments which otherwise would have become due during such twelve-month period will be offset against the purchase price for shipsets 1,001 through 1,120 . Deferred revenue/credits. Deferred revenue/credits generally consist of nonrefundable amounts received in advance of revenue being earned for specific contractual deliverables or amounts that could be required to be refunded if certain performance obligations or conditions are not met. These payments are classified as deferred revenue/credits on the Company's Condensed Consolidated Balance Sheet when received and recognized as revenue as the production units are delivered or performance obligations or conditions are met. In November 2014, Spirit and Boeing entered into a Memorandum of Agreement (the “November 2014 MOA”). As part of the November 2014 MOA, Boeing and Spirit established interim prices for certain B787 shipsets, and the parties agreed to negotiate future rate increases, recurring prices and other issues across multiple programs during 2015. Since the Company was unable to reach agreement with Boeing on these issues by the end of 2015, once the parties agree upon appropriate pricing for the B787-9, Boeing will be entitled to a retroactive adjustment on certain B787 payments which were based on the interim pricing. The amount Spirit received that is subject to a retroactive adjustment was recorded as deferred revenue, and has not been recognized by the Company as revenue. The Company is engaged in discussions with Boeing concerning how to determine the subsequent B787-9 and initial B787-10 prices, and the parties have not yet reached agreement. Advance payments and deferred revenue/credits are summarized by platform as follows: March 31, December 31, 2015 B787 $ 923.5 $ 909.3 Boeing - All other platforms 13.2 13.8 A350 XWB 162.4 183.5 Airbus — All other platforms 4.1 4.0 Other 26.7 30.6 Total advance payments and deferred revenue/credits $ 1,129.9 $ 1,141.2

Government Grants

Government Grants	3 Months Ended
	Mar. 31, 2016
Government Grants [Abstract]
Government Grants	Government Grants The Company received grants in the form of government funding for a portion of the site construction and other specific capital asset costs at the Company's Kinston, North Carolina and Subang, Malaysia sites. Deferred grant income is being amortized as a reduction to production cost. This amortization is based on specific terms associated with the different grants. In North Carolina, the deferred grant income related to the capital investment criteria, which represents half of the grant, is being amortized over the lives of the assets purchased to satisfy the capital investment performance criteria. The other half of the deferred grant income is being amortized over a ten -year period, which began in 2010, in a manner consistent with the job performance criteria. Under the agreement, failure by Spirit to meet job performance criteria, including creation of a targeted number of jobs, could result in Spirit being obligated to make incremental rent payments to the North Carolina Global TransPark Authority over the initial term of the lease. The amount of the incremental rent payments would vary depending on Spirit’s level of attainment of the specified requirements not to exceed a certain dollar threshold. In Malaysia, the deferred grant income is being amortized based on the estimated lives of the eligible assets constructed with the grant funds as there are no performance criteria. The assets related to deferred grant income are consolidated within property, plant and equipment. Deferred grant income liability, net consists of the following: Balance, December 31, 2015 $ 94.2 Grant liability amortized (2.7 ) Exchange rate (0.7 ) Total asset value related to deferred grant income, March 31, 2016 $ 90.8 The assets related to the deferred grant income consist of the following: Balance, December 31, 2015 $ 106.6 Amortization (1.3 ) Exchange rate (0.7 ) Total asset value related to deferred grant income, March 31, 2016 $ 104.6

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements FASB’s authoritative guidance on fair value measurements defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. It also establishes a fair value hierarchy, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The guidance discloses three levels of inputs that may be used to measure fair value: Level 1 Quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 1 assets and liabilities include debt and equity securities and derivative contracts that are traded in an active exchange market. Level 2 Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 2 assets and liabilities include debt securities with quoted prices that are traded less frequently than exchange-traded instruments and derivative contracts whose value is determined using a pricing model with inputs that are observable in the market or can be derived principally from or corroborated by observable market data. Observable inputs, such as current and forward interest rates and foreign exchange rates, are used in determining the fair value of the interest rate swaps and foreign currency hedge contracts. Level 3 Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of assets and liabilities. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation. Fair Value Measurements March 31, 2016 At March 31, 2016 using Description Total Carrying Amount in Balance Sheet Assets Measured at Fair Value Liabilities Measured at Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Money Market Fund $ 22.2 $ 22.2 $ — $ 22.2 $ — $ — Fair Value Measurements December 31, 2015 At December 31, 2015 using Description Total Carrying Amount in Balance Sheet Assets Measured at Fair Value Liabilities Measured at Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Money Market Fund $ 90.2 $ 90.2 $ — $ 90.2 $ — $ — The Company’s long-term debt includes a senior secured term loan, senior unsecured notes and the Malaysian term loan. The estimated fair value of the Company's debt obligations is based on the quoted market prices for such obligations or the historical default rate for debt with similar credit ratings. The following table presents the carrying amount and estimated fair value of long-term debt: March 31, 2016 December 31, 2015 Carrying Amount Fair Value Carrying Amount Fair Value Senior secured term loan A (including current portion) $ 501.6 $ 497.5 (2) $ 508.3 $ 501.6 (2) Senior unsecured notes due 2020 300.0 311.2 (1) 300.0 310.5 (1) Senior unsecured notes due 2022 299.5 310.8 (1) 299.5 304.8 (1) Malaysian loan 3.0 2.6 (2) 3.2 2.8 (2) Total $ 1,104.1 $ 1,122.1 $ 1,111.0 $ 1,119.7 (1) Level 1 Fair Value hierarchy (2) Level 2 Fair Value hierarchy

Derivative and Hedging Activiti

Derivative and Hedging Activities	3 Months Ended
	Mar. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative and Hedging Activities	Derivative and Hedging Activities The Company has historically entered into interest rate swap agreements to reduce its exposure to the variable rate portion of its long-term debt. On the inception date, the Company designates a derivative contract as either a fair value or cash flow hedge and links the contract to either a specific asset or liability on the balance sheet, or to forecasted commitments or transactions. The Company assesses, both at the hedges' inception and on a quarterly basis, whether the derivative item is effective in offsetting changes in fair value or cash flows. Any gains or losses on hedges are included in earnings when the underlying transaction that was hedged occurs. The Company also considers counterparty credit risk and its own credit risk in its determination of all estimated fair values. The Company has historically entered into derivative instruments covered by master netting arrangements whereby, in the event of a default as defined by the senior secured credit facility or termination event, the non-defaulting party has the right to offset any amounts payable against any obligation of the defaulting party under the same counterparty agreement. See Note 12, Debt for discussion of the Company's senior secured credit facilities. Interest Rate Swaps During the first quarter of 2015, as a result of Amendment No. 5 to its Credit Agreement, the Company unwound its interest rate swap agreements which had a notional amount of $250.0 . The company recognized a loss of $0.4 as a result of unwinding these interest rate swaps. This loss on derivatives not designated as hedging instruments is included in Other Expense on the Consolidated Statement of Operations for the three months ended April 2, 2015. In total, the Company paid $2.0 as a result of the settlement of the interest rate swap agreements. As of March 31, 2016 and December 31, 2015, the Company had no outstanding interest rate swap agreements.

Debt

Debt	3 Months Ended
	Mar. 31, 2016
Debt Disclosure [Abstract]
Debt	Debt Total debt shown on the balance sheet is comprised of the following: March 31, 2016 December 31, 2015 Current Noncurrent Current Noncurrent Senior secured term loan A $ 26.8 $ 474.8 $ 26.8 $ 481.5 Senior notes due 2020 — 300.0 — 300.0 Senior notes due 2022 — 299.5 — 299.5 Malaysian term loan 2.4 0.6 2.1 1.1 Present value of capital lease obligations 0.6 8.5 0.6 8.5 Other 13.1 — 6.1 7.0 Total $ 42.9 $ 1,083.4 $ 35.6 $ 1,097.6 Senior Secured Credit Facilities On March 18, 2015, Spirit AeroSystems, Inc., as borrower, Spirit AeroSystems Holdings, Inc., as parent guarantor, and certain of its subsidiaries entered into Amendment No. 5 (the “Amendment”) to the Company's senior secured Credit Agreement, dated as of April 18, 2012, as amended by Amendment No. 1, dated as of October 26, 2012, Amendment No. 2, dated as of August 2, 2013, Amendment No. 3, dated as of March 18, 2014 and Amendment No. 4, dated as of June 3, 2014 (the "Credit Agreement"). The Amendment provided for a new $535.0 senior secured term loan A (the “Term Loan”) with a maturity date of March 18, 2020 , which replaced the term loan B which had an amount outstanding of approximately $534.9 (the “Term Loan B”) that was scheduled to mature on September 15, 2020 . The Term Loan bears interest, at Spirit’s option, at either LIBOR plus 1.75% or a defined “base rate” plus 0.75% , subject to adjustment to amounts between and including LIBOR plus 1.75% and LIBOR plus 2.50% (or amounts between and including base rate plus 0.75% and base rate plus 1.50% , as applicable) based on changes to Spirit’s debt-to-EBITDA ratio. The principal obligations under the Term Loan are to be repaid in equal quarterly installments of $6.7 , with the remaining balance due at maturity of the Term Loan. The Amendment maintained substantially the same prepayment requirements and covenant structure under the Credit Agreement, and provided the Company with some additional flexibility with respect to certain activities. Spirit used the proceeds of the Term Loan to pay off the Term Loan B and to pay a portion of the fees and expenses payable in connection with the Amendment. As of March 31, 2016, the outstanding balance of the Term Loan was $501.6 . As a result of extinguishment of the Term Loan B during the first quarter of 2015, the Company recognized a loss on extinguishment of debt of $3.6 . Of this total charge, $3.1 is reflected within amortization of deferred financing fees and $0.5 is reflected within amortization expense on the Condensed Consolidated Statement of Cash Flows for the three months ended April 2, 2015. Substantially all of Spirit's assets, including inventory and property, plant and equipment, had been pledged as collateral for both the Term Loan and the revolving credit facility. However, under the terms of the Credit Agreement, following the credit rating upgrades by Moody's and S&P during 2016, the collateral was released effective April 27, 2016. Senior Notes In November 2010, the Company issued $300.0 in aggregate principal amount of 6.75% Senior Notes due December 15, 2020 (the “2020 Notes”), with interest payable, in cash in arrears, on June 15 and December 15 of each year, beginning June 15, 2011. The 2020 Notes are fully and unconditionally guaranteed, jointly and severally, on a senior unsecured basis by the Company and Spirit’s existing and future domestic subsidiaries that guarantee Spirit’s obligations under Spirit’s senior secured credit facility. The carrying value of the 2020 Notes was $300.0 as of March 31, 2016. In March 2014, the Company issued $300.0 in aggregate principal amount of 5.25% Senior Notes due March 15, 2022 (the "2022 Notes") with interest payable, in cash in arrears, on March 15 and September 15 of each year, beginning September 15, 2014. The 2022 Notes are unconditionally guaranteed, jointly and severally, on a senior unsecured basis, by the Company and its existing and future domestic subsidiaries that guarantee Spirit's obligations under its amended senior secured credit facility. The carrying value of the 2022 Notes was $299.5 as of March 31, 2016.

Pension and Other Post-Retireme

Pension and Other Post-Retirement Benefits	3 Months Ended
	Mar. 31, 2016
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Pension and Other Post-Retirement Benefits	Pension and Other Post-Retirement Benefits Defined Benefit Plans For the Three Months Ended Components of Net Periodic Pension Expense/(Income) March 31, April 2, Service cost $ 0.3 $ 0.3 Interest cost 11.7 12.0 Expected return on plan assets (19.5 ) (20.7 ) Amortization of net loss 0.7 1.0 Special termination benefits (1) 11.0 — Net periodic pension expense (income) $ 4.2 $ (7.4 ) (1) Special termination benefits related to early retirement incentives offered as part of a voluntary retirement plan. Other Benefits For the Three Months Ended Components of Other Benefit Expense March 31, April 2, Service cost $ 0.6 $ 0.7 Interest cost 0.6 0.6 Amortization of net gain (0.1 ) — Special termination benefits (1) 3.1 — Net periodic other benefit expense $ 4.2 $ 1.3 (1) Special termination benefits related to early retirement incentives offered as part of a voluntary retirement plan. Employer Contributions The Company expects to contribute zero dollars to the U.S. qualified pension plan and a combined total of approximately $6.8 for the Supplemental Executive Retirement Plan (SERP) and post-retirement medical plans in 2016. The Company's projected contributions to the U.K. pension plan for 2016 are zero . The entire amount contributed can vary based on exchange rate fluctuations.

Stock Compensation

Stock Compensation	3 Months Ended
	Mar. 31, 2016
Share-based Compensation [Abstract]
Stock Compensation	Stock Compensation Holdings has established various stock compensation plans which include restricted share grants and stock purchase plans. Compensation values are based on the value of Holdings' common stock at the grant date. The common stock value is added to equity and charged to period expense or included in inventory and cost of sales. The Executive Incentive Plan, Short-Term Incentive Plan ("STIP"), Long-Term Incentive Plan ("LTIP") and Director Stock Plan (collectively referred to as "Prior Plans") were replaced by the Omnibus Incentive Plan (the "Omnibus Plan") in 2014. No new awards will be granted under such Prior Plans. Outstanding awards under the Prior Plans will continue to be governed by the terms of such plans until exercised, expired, or otherwise terminated or canceled. The Omnibus Plan provides for a Long-Term Incentive Award ("LTIA") for the 2014 plan year and forward. The LTIAs provide both time and performance based incentives. • 75% of the LTIA is service-based restricted stock that will vest in equal installments over a three -year period. • 25% of the LTIA is market-based restricted stock that will vest on the third year anniversary of the grant date contingent upon total shareholder return ("TSR") compared to the Company’s peers. For the three months ended March 31, 2016 the Company recognized a net total of $5.3 of stock compensation expense, which is net of stock forfeitures and includes expense for the Prior Plans and the LTIA under the Omnibus Plan. For the three months ended April 2, 2015, the Company recognized $6.9 of stock compensation expense, net of forfeitures. The entire stock compensation expense of $5.3 and $6.9 , for the three months ended March 31, 2016 and April 2, 2015, respectively, was recorded as selling, general and administrative. During the first quarter ended March 31, 2016, 492,624 shares of class A common stock with an aggregate grant date fair value of $21.4 were granted under the service-based portion of the Company's LTIA. In addition, 125,894 shares of class A common stock with an aggregate grant date fair value of $6.8 were granted under the market-based portion of the Company's LTIA under the Omnibus Plan and such shares are eligible to vest on the three-year anniversary of the grant date depending on total shareholder return compared to the Company's peers. Additionally, 102,943 shares of class A common stock with an aggregate grant date fair value of $5.0 awarded under the Company's LTIP vested during the quarter ended March 31, 2016.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The process for calculating the Company's income tax expense involves estimating actual current taxes due plus assessing temporary differences arising from differing treatment for tax and accounting purposes that are recorded as deferred tax assets and liabilities. Deferred tax assets are periodically evaluated to determine their recoverability. The total net deferred tax asset at March 31, 2016 and December 31, 2015 was $126.5 and $149.7 , respectively. The difference is primarily due to the utilization of deductible temporary differences within the calculation of U.S. taxable income. The Company files income tax returns in all jurisdictions in which it operates. The Company establishes reserves to provide for additional income taxes that may be due upon audit. These reserves are established based on management’s assessment as to the potential exposure attributable to permanent tax adjustments and associated interest. All tax reserves are analyzed quarterly and adjustments made as events occur that warrant modification. In general, the Company records income tax expense each quarter based on its best estimate as to the full year’s effective tax rate. Certain items, however, are given discrete period treatment and the tax effects for such items are therefore reported in the quarter that an event arises. Events or items that give rise to discrete recognition may include finalizing amounts in income tax returns filed, finalizing audit examinations for open tax years, expiration of statutes of limitations and changes in tax law. The 32.4% effective tax rate for the three months ended March 31, 2016 differs from the 13.9% effective tax rate for the same period of 2015 primarily due to U.S. net deferred tax asset valuation allowance decrease in 2015 netted against an increase in U.S. domestic production activities deduction in 2016. The Company will continue to participate in the Internal Revenue Service’s Compliance Assurance Process (“CAP”) program for its 2015 and 2016 tax years. The CAP program’s objective is to resolve issues in a timely, contemporaneous manner and eliminate the need for a lengthy post-filing examination. The HM Revenue & Customs completed its examination of the Company's 2009-2011 U.K. income tax returns and the statute of limitations has lapsed on the 2013 tax return. The Directorate General of Public Finance is currently examining the Company's 2011-2013 France income tax returns. While a change could result from the ongoing examinations, the Company expects no material change in its recorded unrecognized tax benefit liability in the next 12 months. The Company had $54.4 and $3.0 of income tax payable as of March 31, 2016 and December 31, 2015, respectively, which is reflected within other current liabilities on the Consolidated Balance Sheet.

Equity

Equity	3 Months Ended
	Mar. 31, 2016
Stockholders' Equity Note [Abstract]
Equity	Equity Earnings per Share Calculation Basic net income per share is computed using the weighted-average number of outstanding shares of common stock during the measurement period. Diluted net income per share is computed using the weighted-average number of outstanding shares of common stock and, when dilutive, potential outstanding shares of common stock during the measurement period. Subject to preferences that may apply to shares of preferred stock outstanding at the time, holders of the Company’s outstanding common stock are entitled to any dividend declared by the Board of Directors out of funds legally available for this purpose. The Company did not pay any cash dividends in the three months ended March 31, 2016. The Company's future dividend policy will depend on the requirements of financing agreements to which the Company may be a party. Any future determination to pay dividends will be at the discretion of the Company's Board of Directors and will depend upon, among other factors, the Company's results of operations, financial condition, capital requirements and contractual restrictions. The Company accounts for treasury stock under the cost method and includes treasury stock as a component of stockholders’ equity. As of March 31, 2016, no treasury shares have been reissued or retired. The following table sets forth the computation of basic and diluted earnings per share: For the Three Months Ended March 31, 2016 April 2, 2015 Income Shares Per Share Amount Income Shares Per Share Amount Basic EPS Income available to common shareholders $ 171.5 131.6 $ 1.30 $ 181.7 138.9 $ 1.31 Income allocated to participating securities 0.1 0.1 0.2 0.1 Net income $ 171.6 $ 181.9 Diluted potential common shares 1.0 1.4 Diluted EPS Net income $ 171.6 132.7 $ 1.29 $ 181.9 140.4 $ 1.30 The balance of outstanding common shares presented in the Condensed Consolidated Balance Sheets was 132.5 million and 141.7 million at March 31, 2016 and April 2, 2015, respectively. Included in the outstanding common shares were 2.2 million and 2.8 million of issued but unvested shares at March 31, 2016 and April 2, 2015, respectively, which are excluded from the basic EPS calculation. Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Loss is summarized by component as follows: As of As of March 31, 2016 December 31, 2015 Pension $ (121.0 ) $ (121.5 ) Interest rate swaps — (0.4 ) SERP/Retiree medical 6.0 6.1 Foreign currency impact on long term intercompany loan (10.3 ) (9.2 ) Currency translation adjustment (43.2 ) (35.5 ) Total accumulated other comprehensive loss $ (168.5 ) $ (160.5 )

Related Party Transactions

Related Party Transactions	3 Months Ended
	Mar. 31, 2016
Related Party Transaction, Due from (to) Related Party [Abstract]
Related Party Transactions	Related Party Transactions In December 2014, Onex acquired approximately a 40% interest in Advanced Integration Technologies (“AIT”), a provider of automation and tooling, maintenance services and aircraft components to the aerospace industry and a supplier to the Company. For the three months ended March 31, 2016 and April 2, 2015, sales from AIT to the Company and its subsidiaries were $4.7 and $5.9 , respectively. The amounts owed to AIT and recorded as accrued liabilities were $1.4 and $4.0 as of March 31, 2016 and December 31, 2015, respectively. Tawfiq Popatia, a former director of Spirit Holdings, is a Managing Director of Onex Corporation.

Commitments, Contingencies and

Commitments, Contingencies and Guarantees	3 Months Ended
	Mar. 31, 2016
Commitments Contingencies And Guarantees [Abstract]
Commitments, Contingencies and Guarantees	Commitments, Contingencies and Guarantees Litigation From time to time the Company is subject to, and is presently involved in, litigation or other legal proceedings arising in the ordinary course of business. While the final outcome of these matters cannot be predicted with certainty, considering, among other things, the meritorious legal defenses available, it is the opinion of the Company that none of these items, when finally resolved, will have a material adverse effect on the Company’s long-term financial position or liquidity. The Company had outstanding obligations in respect of litigation or other legal proceedings of $25.0 as of both March 31, 2016 and December 31, 2015. However, an unexpected adverse resolution of one or more of these items could have a material adverse effect on the results of operations and cash flows in a particular quarter or fiscal year. From time to time, in the ordinary course of business and similar to others in the industry, we receive requests for information from government agencies in connection with their regulatory or investigational authority. Such requests can include subpoenas or demand letters for documents to assist the government in audits or investigations. We review such requests and notices and take appropriate action. We have been subject to certain requests for information and investigations in the past and could be subject to such requests for information and investigations in the future. Additionally, we are subject to federal and state requirements for protection of the environment, including those for disposal of hazardous waste and remediation of contaminated sites. As a result, we are required to participate in certain government investigations regarding environmental remediation actions. On December 5, 2014, Boeing filed a complaint in Delaware Superior Court, Complex Commercial Litigation Division, entitled The Boeing Co. v. Spirit AeroSystems, Inc., No. N14C-12-055 (EMD). Boeing seeks indemnification from Spirit for (a) damages assessed against Boeing in International Union, United Automobile, Aerospace and Agricultural Workers of America v. Boeing Co., AAA Case No. 54 300 00795 07 (the “UAW Arbitration”), which was brought on behalf of certain former Boeing employees in Tulsa and McAlester, Oklahoma, and (b) claims that Boeing allegedly settled in Society of Professional Engineering Employees in Aerospace v. Boeing Co., Nos. 05-1251-MLB, 07-1043-MLB (D. Kan.) (the “Harkness Class Action”). Spirit Holdings, Spirit and certain Spirit retirement plan entities were parties to the Harkness Class Action, but all claims against the Spirit entities were subsequently dismissed. Boeing’s Complaint asserts that the damages assessed against Boeing in the UAW Arbitration and the claims settled by Boeing in the Harkness Class Action are liabilities that Spirit assumed under an Asset Purchase Agreement between Boeing and Spirit, dated February 22, 2005 (the “APA”). Boeing asserts claims for breach of contract and declaratory judgment regarding its indemnification rights under the APA. Boeing alleges that, under the UAW Arbitration decision, Boeing has paid more than $13.0 of a liability Boeing estimates to have a net present value of $39.0. In regard to the Harkness Class Action, Boeing has announced that the district court has approved a settlement in an amount of $90.0. In addition to the amounts related to the UAW Arbitration and Harkness Class Action, Boeing seeks indemnification for more than $10.0 in attorneys’ fees it alleges it expended to defend the UAW Arbitration and Harkness Class Action. On December 24, 2014, the parties filed a joint stipulation extending Spirit’s deadline to move, answer or otherwise respond to Boeing’s complaint until February 12, 2015. Spirit timely answered the complaint. Spirit intends to defend vigorously against the allegations in this lawsuit. Management believes the resolution of this matter will not materially affect the Company’s financial position, results of operations or liquidity. On June 3, 2013, a putative class action lawsuit was commenced against the Company, Jeffrey L. Turner, and Philip D. Anderson in the U.S. District Court for the District of Kansas. The court-appointed lead plaintiffs - two pension funds that claim to represent a class of investors in the Company's stock - filed an amended complaint on April 7, 2014, naming as additional defendants Spirit's Vice President of the B787 Program Terry J. George and former Senior Vice President of Oklahoma Operations Alexander K. Kummant. The amended complaint alleges that defendants engaged in a scheme to artificially inflate the market price of the Company's stock by making false statements and omissions about certain programs' performance and costs. It contends that the alleged scheme was revealed by the Company’s accrual of $590.0 in forward loss charges on October 25, 2012. The lead plaintiffs seek certification of a class of all persons other than defendants who purchased Holdings securities between May 5, 2011 and October 24, 2012, and seek an unspecified amount of damages on behalf of the putative class. In June 2014, the defendants filed a motion to dismiss the claims set forth in the amended complaint. On May 14, 2015, the District Court granted Spirit's motion to dismiss and dismissed the matter with prejudice. The plaintiffs filed a notice of appeal on June 11, 2015. The appeal has been fully briefed and argued, but the Court of Appeals has not yet issued a decision. The Company intends to vigorously defend against these allegations, and management believes the resolution of this matter will not materially affect the Company’s financial position, results of operations or liquidity. Guarantees Outstanding guarantees were $22.2 and $20.1 at March 31, 2016 and December 31, 2015, respectively. Restricted Cash The Company was required to maintain $19.9 of restricted cash as of both March 31, 2016 and December 31, 2015 related to certain collateral requirements for obligations under its workers’ compensation programs. Restricted cash is included in “Other assets” in the Company's Condensed Consolidated Balance Sheets. Indemnification The Company has entered into customary indemnification agreements with each of its Directors, and some of its executive employment agreements include indemnification provisions. Under those agreements, the Company agrees to indemnify each of these individuals against claims arising out of events or occurrences related to that individual’s service as the Company’s agent or the agent of any of its subsidiaries to the fullest extent legally permitted. Service and Product Warranties and Extraordinary Rework Provisions for estimated expenses related to service and product warranties and certain extraordinary rework are evaluated on a quarterly basis. These costs are accrued and are recorded to unallocated cost of goods sold. These estimates are established using historical information on the nature, frequency and average cost of warranty claims, including the experience of industry peers. In the case of new development products or new customers, Spirit considers other factors including the experience of other entities in the same business and management judgment, among others. Service warranty and extraordinary work is reported in current liabilities and other liabilities in the Condensed Consolidated Balance Sheet. The following is a roll forward of the service warranty and extraordinary rework balance at March 31, 2016: Balance, December 31, 2015 $ 158.7 Charges to costs and expenses 1.8 Payouts (2.8 ) Exchange rate (0.1 ) Balance, March 31, 2016 $ 157.6

Other Income (Expense), Net

Other Income (Expense), Net	3 Months Ended
	Mar. 31, 2016
Other Nonoperating Income (Expense) [Abstract]
Other Income (Expense), Net	Other Expense, Net Other expense, net is summarized as follows: For the Three Months Ended March 31, April 2, KDFA bond $ 1.1 $ 1.2 Rental and miscellaneous income (expense) (1) 0.1 (1.9 ) Interest income 0.8 0.2 Foreign currency losses (4.2 ) (5.9 ) Total $ (2.2 ) $ (6.4 ) (1) Includes $2.0 of losses related to the settlement of interest rate swap agreements for the period ended April 2, 2015, as further detailed in Note 11, Derivative and Hedging Activities. Foreign currency losses are due to the impact of movement in foreign currency exchange rates on an intercompany revolver and long-term contractual rights/obligations, as well as trade and intercompany receivables/payables which are denominated in a currency other than the entity’s functional currency.

Segment Information

Segment Information	3 Months Ended
	Mar. 31, 2016
Segment Reporting [Abstract]
Segment Information	Segment Information The Company operates in three principal segments: Fuselage Systems, Propulsion Systems and Wing Systems. Substantially all revenues in the three principal segments are from Boeing, with the exception of Wing Systems, which includes revenues from Airbus and other customers. Approximately 96% of the Company’s net revenues for the three months ended March 31, 2016 came from the Company's two largest customers, Boeing and Airbus. All other activities fall within the All Other segment, principally made up of sundry sales of miscellaneous services, tooling contracts and sales of natural gas through a tenancy-in-common with other companies that have operations in Wichita, Kansas. The Company's primary profitability measure to review a segment’s operating performance is segment operating income before corporate selling, general and administrative expenses, research and development and unallocated cost of sales. Corporate selling, general and administrative expenses include centralized functions such as accounting, treasury and human resources that are not specifically related to the Company's operating segments and are not allocated in measuring the operating segments’ profitability and performance and net profit margins. Research and development includes research and development efforts that benefit the Company as a whole and are not unique to a specific segment. Unallocated cost of sales includes general costs not directly attributable to segment operations, such as warranty, early retirement and other incentives. All of these items are not specifically related to the Company's operating segments and are not utilized in measuring the operating segments’ profitability and performance. The Company’s Fuselage Systems segment includes development, production and marketing of forward, mid and rear fuselage sections and systems, primarily to aircraft OEMs (OEM refers to aircraft original equipment manufacturer), as well as related spares and maintenance, repairs and overhaul (MRO) services. The Fuselage Systems segment manufactures products at our facilities in Wichita, Kansas and Kinston, North Carolina. The Fuselage Systems segment also includes an assembly plant for the A350 XWB aircraft in Saint-Nazaire, France. The Company’s Propulsion Systems segment includes development, production and marketing of struts/pylons, nacelles (including thrust reversers) and related engine structural components primarily to aircraft or engine OEMs, as well as related spares and MRO services. The Propulsion Systems segment manufactures products at our facilities in Wichita and Chanute, Kansas. The Company’s Wing Systems segment includes development, production and marketing of wings and wing components (including flight control surfaces) as well as other miscellaneous structural parts primarily to aircraft OEMs, as well as related spares and MRO services. These activities take place at the Company’s facilities in Tulsa and McAlester, Oklahoma; Kinston, North Carolina; Prestwick, Scotland; and Subang, Malaysia. The Company’s segments are consistent with the organization and responsibilities of management reporting to the chief operating decision-maker for the purpose of assessing performance. The Company’s definition of segment operating income differs from net profit margin as presented in its primary financial statements and a reconciliation of the segment and consolidated results is provided in the table set forth below. While some working capital accounts are maintained on a segment basis, much of the Company’s assets are not managed or maintained on a segment basis. Property, plant and equipment, including tooling, is used in the design and production of products for each of the segments and, therefore, is not allocated to any individual segment. In addition, cash, prepaid expenses, other assets and deferred taxes are managed and maintained on a consolidated basis and generally do not pertain to any particular segment. Raw materials and certain component parts are used in the production of aerostructures across all segments. Work-in-process inventory is identifiable by segment, but is managed and evaluated at the program level. As there is no segmentation of the Company’s productive assets, depreciation expense (included in fixed manufacturing costs and selling, general and administrative expenses) and capital expenditures, no allocation of these amounts has been made solely for purposes of segment disclosure requirements. The following table shows segment revenues and operating income for the three months ended March 31, 2016 and April 2, 2015: Three Months Ended March 31, April 2, Segment Revenues Fuselage Systems $ 873.8 $ 916.8 Propulsion Systems 438.6 446.0 Wing Systems 360.5 376.7 All Other 8.7 2.7 $ 1,681.6 $ 1,742.2 Segment Operating Income (Loss) Fuselage Systems $ 177.3 $ 164.5 Propulsion Systems 99.1 95.7 Wing Systems 58.8 45.2 All Other 1.9 (0.3 ) 337.1 305.1 Corporate SG&A (50.0 ) (51.6 ) Research and development (6.1 ) (7.0 ) Unallocated cost of sales (1) (14.5 ) (11.2 ) Total operating income $ 266.5 $ 235.3 (1) Includes $2.3 and $10.4 of warranty reserve for the three months ended March 31, 2016 and April 2, 2015, respectively. Also includes $11.8 related to early retirement incentives for the three months ended March 31, 2016.

Condensed Consolidating Financi

Condensed Consolidating Financial Information	3 Months Ended
	Mar. 31, 2016
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Consolidating Financial Information	Condensed Consolidating Financial Information The 2020 Notes and the 2022 Notes are fully and unconditionally guaranteed on a joint and several senior unsecured basis by the Company and its 100% owned domestic subsidiaries, other than Spirit (the “Subsidiary Guarantors”). The following condensed consolidating financial information, which has been prepared in accordance with the requirements for presentation of Rule 3-10(d) of Regulation S-X promulgated under the Securities Act, presents the condensed consolidating financial information separately for: (i) Holdings, as the parent company and parent guarantor to the Credit Agreement, as further detailed in Note 12, Debt; (ii) Spirit, as the subsidiary issuer of the 2020 Notes and the 2022 Notes; (iii) The Subsidiary Guarantors, on a combined basis, as guarantors of the 2020 Notes and the 2022 Notes; (iv) The Company’s subsidiaries, other than the Subsidiary Guarantors, which are not guarantors of the 2020 Notes and the 2022 Notes (the “Subsidiary Non-Guarantors”), on a combined basis; (v) Consolidating entries and eliminations representing adjustments to (a) eliminate intercompany transactions between or among Holdings, the Subsidiary Guarantors and the Subsidiary Non-Guarantors, (b) eliminate the investments in the Company’s subsidiaries and (c) record consolidating entries; and (vi) Holdings and its subsidiaries on a consolidated basis. Condensed Consolidating Statements of Operations For the Three Months Ended March 31, 2016 Holdings Spirit Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Net revenues $ — $ 1,510.5 $ 95.0 $ 215.9 $ (139.8 ) $ 1,681.6 Operating costs and expenses Cost of sales — 1,214.4 91.7 192.7 (139.8 ) 1,359.0 Selling, general and administrative 1.5 44.2 0.7 3.6 — 50.0 Research and development — 5.0 0.5 0.6 — 6.1 Total operating costs and expenses 1.5 1,263.6 92.9 196.9 (139.8 ) 1,415.1 Operating (loss) income (1.5 ) 246.9 2.1 19.0 — 266.5 Interest expense and financing fee amortization — (11.3 ) — (2.1 ) 2.0 (11.4 ) Other income (expense), net — 3.9 — (4.1 ) (2.0 ) (2.2 ) (Loss) income before income taxes and equity in net income of affiliate and subsidiaries (1.5 ) 239.5 2.1 12.8 — 252.9 Income tax benefit (provision) 0.5 (78.7 ) (0.8 ) (2.9 ) — (81.9 ) (Loss) income before equity in net income of affiliate and subsidiaries (1.0 ) 160.8 1.3 9.9 — 171.0 Equity in net income of affiliate 0.6 — — 0.6 (0.6 ) 0.6 Equity in net income of subsidiaries 172.0 11.2 — — (183.2 ) — Net income 171.6 172.0 1.3 10.5 (183.8 ) 171.6 Other comprehensive (loss) income (8.0 ) (8.0 ) — (8.8 ) 16.8 (8.0 ) Comprehensive income (loss) $ 163.6 $ 164.0 $ 1.3 $ 1.7 $ (167.0 ) $ 163.6 Condensed Consolidating Statements of Operations For the Three Months Ended April 2, 2015 Holdings Spirit Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Net revenues $ — $ 1,619.0 $ 58.1 $ 186.2 $ (121.1 ) $ 1,742.2 Operating costs and expenses Cost of sales — 1,352.0 54.8 162.6 (121.1 ) 1,448.3 Selling, general and administrative 2.6 45.2 1.3 2.5 — 51.6 Research and development — 6.3 — 0.7 — 7.0 Total operating costs and expenses 2.6 1,403.5 56.1 165.8 (121.1 ) 1,506.9 Operating (loss) income (2.6 ) 215.5 2.0 20.4 — 235.3 Interest expense and financing fee amortization — (17.8 ) — (2.0 ) 1.9 (17.9 ) Other income (expense), net — 1.4 0.1 (6.0 ) (1.9 ) (6.4 ) (Loss) income before income taxes and equity in net income of affiliate and subsidiaries (2.6 ) 199.1 2.1 12.4 — 211.0 Income tax benefit (provision) 0.3 (27.1 ) (0.8 ) (1.8 ) — (29.4 ) (Loss) income before equity in net income of affiliate and subsidiaries (2.3 ) 172.0 1.3 10.6 — 181.6 Equity in net income of affiliate 0.3 — — 0.3 (0.3 ) 0.3 Equity in net income of subsidiaries 183.9 11.9 — — (195.8 ) — Net income 181.9 183.9 1.3 10.9 (196.1 ) 181.9 Other comprehensive (loss) income (14.0 ) 1.1 — (15.1 ) 14.0 (14.0 ) Comprehensive income (loss) $ 167.9 $ 185.0 $ 1.3 $ (4.2 ) $ (182.1 ) $ 167.9 Condensed Consolidating Balance Sheet March 31, 2016 Holdings Spirit Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Current assets Cash and cash equivalents $ — $ 796.3 $ — $ 26.6 $ — $ 822.9 Accounts receivable, net — 798.0 35.9 211.8 (362.5 ) 683.2 Inventory, net — 1,281.2 175.2 351.6 — 1,808.0 Other current assets — 21.4 2.3 3.8 — 27.5 Total current assets — 2,896.9 213.4 593.8 (362.5 ) 3,341.6 Property, plant and equipment, net — 1,393.0 366.2 188.0 — 1,947.2 Pension assets, net — 229.5 — 13.2 — 242.7 Investment in subsidiary 460.8 283.7 — — (744.5 ) — Equity in net assets of subsidiaries 1,659.9 257.1 — — (1,917.0 ) — Other assets — 480.5 82.1 21.3 (328.5 ) 255.4 Total assets $ 2,120.7 $ 5,540.7 $ 661.7 $ 816.3 $ (3,352.5 ) $ 5,786.9 Current liabilities Accounts payable $ — $ 573.8 $ 283.4 $ 151.1 $ (362.5 ) $ 645.8 Accrued expenses — 190.4 1.0 34.1 — 225.5 Profit sharing — 17.7 — 0.7 — 18.4 Current portion of long-term debt — 39.9 — 3.0 — 42.9 Advance payments, short-term — 192.5 — — — 192.5 Deferred revenue, short-term — 309.2 — 2.9 — 312.1 Deferred grant income liability - current — — 11.4 1.2 — 12.6 Other current liabilities — 85.9 — 2.8 — 88.7 Total current liabilities — 1,409.4 295.8 195.8 (362.5 ) 1,538.5 Long-term debt — 1,074.3 — 257.6 (248.5 ) 1,083.4 Advance payments, long-term — 452.9 — — — 452.9 Pension/OPEB obligation — 70.2 — — — 70.2 Deferred grant income liability - non-current — — 52.5 25.7 — 78.2 Deferred revenue and other deferred credits — 167.7 — 4.7 — 172.4 Other liabilities — 325.5 — 25.1 (80.0 ) 270.6 Total equity 2,120.7 2,040.7 313.4 307.4 (2,661.5 ) 2,120.7 Total liabilities and shareholders’ equity $ 2,120.7 $ 5,540.7 $ 661.7 $ 816.3 $ (3,352.5 ) $ 5,786.9 Condensed Consolidating Balance Sheet December 31, 2015 Holdings Spirit Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Current assets Cash and cash equivalents $ — $ 894.2 $ — $ 63.1 $ — $ 957.3 Accounts receivable, net — 686.3 27.1 189.4 (365.8 ) 537.0 Inventory, net — 1,229.0 179.4 365.9 0.1 1,774.4 Other current assets — 24.4 1.9 4.1 — 30.4 Total current assets — 2,833.9 208.4 622.5 (365.7 ) 3,299.1 Property, plant and equipment, net — 1,393.1 364.2 193.4 — 1,950.7 Pension assets, net — 233.3 — 13.6 — 246.9 Investment in subsidiary 623.6 283.7 — 0.1 (907.4 ) — Equity in net assets of subsidiaries 1,496.4 254.1 — — (1,750.5 ) — Other assets — 517.7 82.7 21.3 (340.9 ) 280.8 Total assets $ 2,120.0 $ 5,515.8 $ 655.3 $ 850.9 $ (3,364.5 ) $ 5,777.5 Current liabilities Accounts payable $ — $ 538.2 $ 276.4 $ 169.4 $ (365.8 ) $ 618.2 Accrued expenses — 195.0 0.5 34.7 — 230.2 Profit sharing — 58.3 — 3.3 — 61.6 Current portion of long-term debt — 32.9 — 2.7 — 35.6 Advance payments, short-term — 178.3 — — — 178.3 Deferred revenue, short-term — 281.7 — 3.8 — 285.5 Deferred grant income liability - current — — 10.8 1.1 — 11.9 Other current liabilities — 34.7 — 3.0 — 37.7 Total current liabilities — 1,319.1 287.7 218.0 (365.8 ) 1,459.0 Long-term debt — 1,088.0 — 270.6 (261.0 ) 1,097.6 Advance payments, long-term — 507.4 — — — 507.4 Pension/OPEB obligation — 67.7 — — — 67.7 Deferred grant income liability - non-current — — 55.6 26.7 — 82.3 Deferred revenue and other deferred credits — 165.6 — 4.4 — 170.0 Other liabilities — 328.2 — 25.3 (80.0 ) 273.5 Total equity 2,120.0 2,039.8 312.0 305.9 (2,657.7 ) 2,120.0 Total liabilities and shareholders’ equity $ 2,120.0 $ 5,515.8 $ 655.3 $ 850.9 $ (3,364.5 ) $ 5,777.5 Condensed Consolidating Statements of Cash Flows For the Three Months Ended March 31, 2016 Holdings Spirit Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Operating activities Net cash provided by (used in) operating activities $ — $ 101.5 $ 7.1 $ (14.8 ) $ — $ 93.8 Investing activities Purchase of property, plant and equipment — (37.3 ) (7.1 ) (6.0 ) — (50.4 ) Net cash used in investing activities — (37.3 ) (7.1 ) (6.0 ) — (50.4 ) Financing activities Principal payments of debt — (6.7 ) — (0.8 ) — (7.5 ) Collection on (repayment of) intercompany debt — 12.5 — (12.5 ) — — Taxes paid related to net share settlement of awards — (2.9 ) — — — (2.9 ) Excess tax benefits from share-based payment arrangements — 0.2 — — — 0.2 Proceeds (payments) from subsidiary for purchase of treasury stock 165.2 (165.2 ) — — — — Purchase of treasury stock (165.2 ) — — — — (165.2 ) Net cash used in financing activities — (162.1 ) — (13.3 ) — (175.4 ) Effect of exchange rate changes on cash and cash equivalents — — — (2.4 ) — (2.4 ) Net decrease in cash and cash equivalents for the period — (97.9 ) — (36.5 ) — (134.4 ) Cash and cash equivalents, beginning of period — 894.2 — 63.1 — 957.3 Cash and cash equivalents, end of period $ — $ 796.3 $ — $ 26.6 $ — $ 822.9 Condensed Consolidating Statements of Cash Flows For the Three Months Ended April 2, 2015 Holdings Spirit Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Operating activities Net cash provided by operating activities $ — $ 408.4 $ 9.7 $ 5.6 $ — $ 423.7 Investing activities Purchase of property, plant and equipment — (26.1 ) (9.7 ) (4.5 ) — (40.3 ) Net cash used in investing activities — (26.1 ) (9.7 ) (4.5 ) — (40.3 ) Financing activities Proceeds from issuance of debt — 535.0 — — — 535.0 Principal payments of debt — (6.7 ) — (0.8 ) — (7.5 ) Payments on term loan — (534.9 ) — — — (534.9 ) Collection on (repayment of) intercompany debt — (2.0 ) — 2.0 — — Debt issuance and financing costs — (4.7 ) — — — (4.7 ) Net cash (used in) provided by financing activities — (13.3 ) — 1.2 — (12.1 ) Effect of exchange rate changes on cash and cash equivalents — — — 0.3 — 0.3 Net increase in cash and cash equivalents for the period — 369.0 — 2.6 — 371.6 Cash and cash equivalents, beginning of period — 354.6 — 23.3 — 377.9 Cash and cash equivalents, end of period $ — $ 723.6 $ — $ 25.9 $ — $ 749.5

New Accounting Pronouncements (

New Accounting Pronouncements (Policies)	3 Months Ended
	Mar. 31, 2016
Accounting Policies [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	2. New Accounting Pronouncements In March 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU ") No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting (ASU 2016-09). ASU 2016-09 identifies areas for simplification involving several aspects of accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, an option to recognize gross stock compensation expense with actual forfeitures recognized as they occur, as well as certain classifications on the statement of cash flows. ASU 2016-09 will be effective for annual periods beginning after December 15, 2016. Early adoption is permitted. The Company is currently evaluating the new guidance to determine the impact it may have to the Company's consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) (ASU 2016-02). This update requires recognition of lease assets and lease liabilities on the balance sheet of lessees. ASU 2016-02 is effective for fiscal years and interim reporting periods within those years beginning after December 15, 2018. Early adoption is permitted. ASU 2016-02 requires a modified retrospective transition approach and provides certain optional transition relief. The Company is currently evaluating the new guidance to determine the impact it may have to the Company's consolidated financial statements. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers , which supersedes the revenue recognition requirements in ASC 605, Revenue Recognition (ASU 2014-09). This update is based on the principle that revenue is recognized to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 was supposed to be effective in annual periods beginning after December 15, 2016 and for interim and annual reporting periods thereafter. However, in July 2015, the FASB affirmed its proposal to defer the effective date of ASU 2014-09 for all entities by one year. As a result, ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2017, with an option that would permit companies to adopt the standard as early as the original effective date. Early adoption prior to the original effective date is not permitted. In March 2016, the FASB issued ASU 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net) and in April 2016, ASU 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing, both of which provide supplemental adoption guidance and clarification to ASC 2014-09. ASU 2016-08 and ASU 2016-10 must be adopted concurrently with the adoption of ASU 2014-09. The Company is currently evaluating the new guidance to determine the impact it may have to the Company's consolidated financial statements.

Changes in Estimates Changes in

Changes in Estimates Changes in Estimates (Tables)	3 Months Ended
	Mar. 31, 2016
Accounting Changes and Error Corrections [Abstract]
Schedule of Change in Accounting Estimate [Table Text Block]	For the Three Months Ended Changes in Estimates March 31, 2016 April 2, 2015 Favorable Cumulative Catch-up Adjustment by Segment Fuselage $ 16.2 $ 2.7 Propulsion 5.9 9.3 Wing 10.1 — Total Favorable Cumulative Catch-up Adjustment $ 32.2 $ 12.0 Changes in Estimates on Loss Programs Fuselage Boeing - All other platforms $ 3.1 $ 2.9 Total Fuselage Change in Estimate on Loss Programs $ 3.1 $ 2.9 Propulsion Boeing - All other platforms $ 5.5 $ — Rolls-Royce BR725 3.4 — Total Propulsion Change in Estimate on Loss Programs $ 8.9 $ — Wing Boeing - All other platforms $ 3.0 $ — Total Wing Change in Estimate on Loss Programs $ 3.0 $ — Total Change in Estimate on Loss Programs $ 15.0 $ 2.9 Total Change in Estimate $ 47.2 $ 14.9 EPS Impact (diluted per share based upon statutory rates) $ 0.22 $ 0.07 The Company is currently working on several maturing programs which are in various stages of production, including the B787, A350 XWB and BR725 programs. These programs carry risks associated with design responsibility, development of production tooling, production inefficiencies during the early phases of production, hiring and training of qualified personnel, increased capital and funding commitments, supplier performance, delivery schedules and unique customer requirements. The Company has previously recorded forward loss charges on these programs. If the risks related to these programs are not mitigated, then the Company could record additional forward loss charges.

Accounts Receivable, net (Table

Accounts Receivable, net (Tables)	3 Months Ended
	Mar. 31, 2016
Accounts Receivable, Net, Current [Abstract]
Accounts Receivable, Net	Accounts receivable, net consists of the following: March 31, December 31, Trade receivables (1) $ 661.3 $ 524.3 Other 28.0 18.8 Less: allowance for doubtful accounts (6.1 ) (6.1 ) Accounts receivable, net $ 683.2 $ 537.0 (1) Includes unbilled receivables of $32.3 and $30.5 at March 31, 2016 and December 31, 2015, respectively.

Inventory (Tables)

Inventory (Tables)	3 Months Ended
	Mar. 31, 2016
Inventory Disclosure [Abstract]
Summary Of Inventories	Inventories are summarized as follows: March 31, December 31, Raw materials $ 259.7 $ 253.8 Work-in-process 821.4 854.4 Finished goods 64.6 65.7 Product inventory 1,145.7 1,173.9 Capitalized pre-production 147.9 167.8 Deferred production 1,389.6 1,315.4 Forward loss provision (875.2 ) (882.7 ) Total inventory, net $ 1,808.0 $ 1,774.4 Capitalized pre-production costs include certain contract costs, including applicable overhead, incurred before a product is manufactured on a recurring basis. Significant statement of work changes considered not reimbursable by the customer can also cause pre-production costs to be incurred. These costs are typically amortized over a certain number of shipset deliveries. Capitalized pre-production may be amortized over multiple blocks. See contract block and orders table noted below. Deferred production includes costs for the excess of production costs over the estimated average cost per shipset, and credit balances for favorable variances on contracts between actual costs incurred and the estimated average cost per shipset for units delivered under the current production blocks. Recovery of excess-over-average deferred production costs is dependent on the number of shipsets ultimately sold and the ultimate selling prices and lower production costs associated with future production under these contract blocks. The Company believes these amounts, net of forward loss provisions, will be fully recovered over the contract block quantities noted in the contract block and orders table below. Should orders not materialize in future periods to fulfill the block, potential forward loss charges may be necessary to the extent the final delivered quantity does not absorb deferred inventory costs. Sales significantly under estimates or costs significantly over estimates could result in losses on these contracts in future periods. Capitalized pre-production and deferred production inventories are at risk to the extent that the Company does not achieve the orders in the forecasted blocks or if future actual costs exceed current projected estimates, as those categories of inventory are recoverable over future deliveries. Forward loss provisions on contract blocks are recorded in the period in which they become evident and included in inventory with any remaining amount reflected in accrued contract liabilities. Non-recurring production costs include design and engineering costs and test articles.
Summary Of Inventories By Platform	Inventories are summarized by platform and costs below: March 31, 2016 Product Inventory Inventory Non-Recurring Capitalized Pre- Production Deferred Production Forward Loss Provision Total Inventory, net March 31, 2016 B787 213.8 9.9 26.6 591.8 (606.0 ) 236.1 Boeing - All other platforms 484.8 17.0 5.4 (1.9 ) (17.3 ) 488.0 A350 XWB 153.3 37.3 92.2 685.2 (113.7 ) 854.3 Airbus - All other platforms 89.6 — — 9.0 — 98.6 Rolls-Royce BR725 (1) 15.4 — 23.7 99.1 (138.2 ) — GCS&S 56.1 — — — — 56.1 Other platforms 67.3 1.2 — 6.4 — 74.9 Total $ 1,080.3 $ 65.4 $ 147.9 $ 1,389.6 $ (875.2 ) $ 1,808.0 December 31, 2015 Product Inventory Inventory Non-Recurring Capitalized Pre- Production Deferred Production Forward Loss Provision Total Inventory, net December 31, 2015 B787 222.7 9.8 42.1 558.5 (606.0 ) 227.1 Boeing - All other platforms 491.9 23.0 5.6 (32.8 ) (28.8 ) 458.9 A350 XWB 148.7 35.3 94.2 679.4 (113.8 ) 843.8 Airbus - All other platforms 90.8 — — 9.2 — 100.0 Rolls-Royce BR725 (1) 12.5 — 25.9 95.7 (134.1 ) — GCS&S 54.3 — — — — 54.3 Other platforms 80.0 4.9 — 5.4 — 90.3 Total $ 1,100.9 $ 73.0 $ 167.8 $ 1,315.4 $ (882.7 ) $ 1,774.4 (1) Forward loss charges recorded in prior periods on the Rolls-Royce BR725 program exceeded the total inventory balance. The excess of the charge over program inventory is classified as a contract liability and reported in other current liabilities on the Condensed Consolidated Balance Sheet. The total contract liability was $4.6 and $12.2 as of March 31, 2016 and December 31, 2015, respectively.
Block and Orders	Significant amortization of capitalized pre-production and deferred production inventory has occurred over the following contract block deliveries and will continue to occur over the following contract blocks: Model Current Block Deliveries Contract Block Quantity Orders (1) B787 441 500 746 A350 XWB (2) 78 400 758 Rolls-Royce BR725 206 350 257 (1) Order amounts are obtained from the published firm-order backlogs of Airbus and Boeing. For Rolls-Royce BR725, orders represent purchase orders received from OEMs and are not reflective of OEM sales backlog. Orders reported are total block orders, including delivered units. (2) Capitalized pre-production amortization over 800 shipsets.

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	3 Months Ended
	Mar. 31, 2016
Property, Plant and Equipment [Abstract]
Property, plant and equipment, net	Property, plant and equipment, net consists of the following: March 31, December 31, 2015 Land $ 16.1 $ 16.5 Buildings (including improvements) 595.2 585.4 Machinery and equipment 1,248.9 1,210.6 Tooling 943.3 927.2 Capitalized software 230.9 219.7 Construction-in-progress 244.2 278.6 Total 3,278.6 3,238.0 Less: accumulated depreciation (1,331.4 ) (1,287.3 ) Property, plant and equipment, net $ 1,947.2 $ 1,950.7

Other Assets (Tables)

Other Assets (Tables)	3 Months Ended
	Mar. 31, 2016
Other Assets, Noncurrent [Abstract]
Other Assets	Other assets are summarized as follows: March 31, December 31, Intangible assets Patents $ 1.9 $ 1.9 Favorable leasehold interests 6.3 6.3 Total intangible assets 8.2 8.2 Less: Accumulated amortization - patents (1.6 ) (1.6 ) Accumulated amortization - favorable leasehold interest (3.9 ) (3.8 ) Intangible assets, net 2.7 2.8 Deferred financing Deferred financing costs 105.8 105.8 Less: Accumulated amortization - deferred financing costs (1) (87.4 ) (86.3 ) Deferred financing costs, net 18.4 19.5 Other Goodwill - Europe 2.6 2.7 Equity in net assets of affiliates 3.7 3.2 Customer supply agreement (2) 25.6 29.3 Restricted Cash 19.9 19.9 Deferred Tax Asset - non-current (3) 141.8 162.8 Other 40.7 40.6 Total $ 255.4 $ 280.8 (1) Includes charges related to debt extinguishment of zero and $3.1 for the periods ended March 31, 2016 and December 31, 2015, respectively. (2) Under agreements with customers and a supplier, certain payments accounted for as consideration paid by the Company to a customer and supplier are being amortized as a reduction to net revenues.

Advance Payments and Deferred34

Advance Payments and Deferred Revenue/Credits (Tables)	3 Months Ended
	Mar. 31, 2016
Advance Payments And Deferred Revenue Credits [Abstract]
Advance Payments And Deferred Revenue Credits Summarized	Advance payments and deferred revenue/credits are summarized by platform as follows: March 31, December 31, 2015 B787 $ 923.5 $ 909.3 Boeing - All other platforms 13.2 13.8 A350 XWB 162.4 183.5 Airbus — All other platforms 4.1 4.0 Other 26.7 30.6 Total advance payments and deferred revenue/credits $ 1,129.9 $ 1,141.2

Government Grants (Tables)

Government Grants (Tables)	3 Months Ended
	Mar. 31, 2016
Government Grants [Abstract]
Deferred Grant Income Liability Net	Deferred grant income liability, net consists of the following: Balance, December 31, 2015 $ 94.2 Grant liability amortized (2.7 ) Exchange rate (0.7 ) Total asset value related to deferred grant income, March 31, 2016 $ 90.8
Asset Related To Deferred Grant Income Net	The assets related to the deferred grant income consist of the following: Balance, December 31, 2015 $ 106.6 Amortization (1.3 ) Exchange rate (0.7 ) Total asset value related to deferred grant income, March 31, 2016 $ 104.6

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements March 31, 2016 At March 31, 2016 using Description Total Carrying Amount in Balance Sheet Assets Measured at Fair Value Liabilities Measured at Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Money Market Fund $ 22.2 $ 22.2 $ — $ 22.2 $ — $ — Fair Value Measurements December 31, 2015 At December 31, 2015 using Description Total Carrying Amount in Balance Sheet Assets Measured at Fair Value Liabilities Measured at Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Money Market Fund $ 90.2 $ 90.2 $ — $ 90.2 $ — $ —
Carrying Amount And Estimated Fair Value Of Long Term Debt	The following table presents the carrying amount and estimated fair value of long-term debt: March 31, 2016 December 31, 2015 Carrying Amount Fair Value Carrying Amount Fair Value Senior secured term loan A (including current portion) $ 501.6 $ 497.5 (2) $ 508.3 $ 501.6 (2) Senior unsecured notes due 2020 300.0 311.2 (1) 300.0 310.5 (1) Senior unsecured notes due 2022 299.5 310.8 (1) 299.5 304.8 (1) Malaysian loan 3.0 2.6 (2) 3.2 2.8 (2) Total $ 1,104.1 $ 1,122.1 $ 1,111.0 $ 1,119.7 (1) Level 1 Fair Value hierarchy (2) Level 2 Fair Value hierarchy

Derivative and Hedging Activi37

Derivative and Hedging Activities (Tables)	3 Months Ended
	Mar. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Interest rate swaps	During the first quarter of 2015, as a result of Amendment No. 5 to its Credit Agreement, the Company unwound its interest rate swap agreements which had a notional amount of $250.0 . The company recognized a loss of $0.4 as a result of unwinding these interest rate swaps. This loss on derivatives not designated as hedging instruments is included in Other Expense on the Consolidated Statement of Operations for the three months ended April 2, 2015. In total, the Company paid $2.0 as a result of the settlement of the interest rate swap agreements. As of March 31, 2016 and December 31, 2015, the Company had no outstanding interest rate swap agreements.

Debt (Tables)

Debt (Tables)	3 Months Ended
	Mar. 31, 2016
Debt Disclosure [Abstract]
Long Term Debt And Capital Lease Obligations Current And Non Current	Total debt shown on the balance sheet is comprised of the following: March 31, 2016 December 31, 2015 Current Noncurrent Current Noncurrent Senior secured term loan A $ 26.8 $ 474.8 $ 26.8 $ 481.5 Senior notes due 2020 — 300.0 — 300.0 Senior notes due 2022 — 299.5 — 299.5 Malaysian term loan 2.4 0.6 2.1 1.1 Present value of capital lease obligations 0.6 8.5 0.6 8.5 Other 13.1 — 6.1 7.0 Total $ 42.9 $ 1,083.4 $ 35.6 $ 1,097.6

Pension and Other Post-Retire39

Pension and Other Post-Retirement Benefits (Tables)	3 Months Ended
	Mar. 31, 2016
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Change in projected benefit obligations	Defined Benefit Plans For the Three Months Ended Components of Net Periodic Pension Expense/(Income) March 31, April 2, Service cost $ 0.3 $ 0.3 Interest cost 11.7 12.0 Expected return on plan assets (19.5 ) (20.7 ) Amortization of net loss 0.7 1.0 Special termination benefits (1) 11.0 — Net periodic pension expense (income) $ 4.2 $ (7.4 ) (1) Special termination benefits related to early retirement incentives offered as part of a voluntary retirement plan. Other Benefits For the Three Months Ended Components of Other Benefit Expense March 31, April 2, Service cost $ 0.6 $ 0.7 Interest cost 0.6 0.6 Amortization of net gain (0.1 ) — Special termination benefits (1) 3.1 — Net periodic other benefit expense $ 4.2 $ 1.3

Equity (Tables)

Equity (Tables)	3 Months Ended
	Mar. 31, 2016
Stockholders' Equity Note [Abstract]
Basic and Diluted Earnings per share	The following table sets forth the computation of basic and diluted earnings per share: For the Three Months Ended March 31, 2016 April 2, 2015 Income Shares Per Share Amount Income Shares Per Share Amount Basic EPS Income available to common shareholders $ 171.5 131.6 $ 1.30 $ 181.7 138.9 $ 1.31 Income allocated to participating securities 0.1 0.1 0.2 0.1 Net income $ 171.6 $ 181.9 Diluted potential common shares 1.0 1.4 Diluted EPS Net income $ 171.6 132.7 $ 1.29 $ 181.9 140.4 $ 1.30
Schedule of Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Loss is summarized by component as follows: As of As of March 31, 2016 December 31, 2015 Pension $ (121.0 ) $ (121.5 ) Interest rate swaps — (0.4 ) SERP/Retiree medical 6.0 6.1 Foreign currency impact on long term intercompany loan (10.3 ) (9.2 ) Currency translation adjustment (43.2 ) (35.5 ) Total accumulated other comprehensive loss $ (168.5 ) $ (160.5 )

Commitments, Contingencies an41

Commitments, Contingencies and Guarantees (Tables)	3 Months Ended
	Mar. 31, 2016
Commitments Contingencies And Guarantees [Abstract]
Service warranty roll forward	The following is a roll forward of the service warranty and extraordinary rework balance at March 31, 2016: Balance, December 31, 2015 $ 158.7 Charges to costs and expenses 1.8 Payouts (2.8 ) Exchange rate (0.1 ) Balance, March 31, 2016 $ 157.6

Other Income (Expense), Net (Ta

Other Income (Expense), Net (Tables)	3 Months Ended
	Mar. 31, 2016
Other Nonoperating Income (Expense) [Abstract]
Other Income Expense Net	Other expense, net is summarized as follows: For the Three Months Ended March 31, April 2, KDFA bond $ 1.1 $ 1.2 Rental and miscellaneous income (expense) (1) 0.1 (1.9 ) Interest income 0.8 0.2 Foreign currency losses (4.2 ) (5.9 ) Total $ (2.2 ) $ (6.4 )

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2016
Segment Reporting [Abstract]
Segment Information	The following table shows segment revenues and operating income for the three months ended March 31, 2016 and April 2, 2015: Three Months Ended March 31, April 2, Segment Revenues Fuselage Systems $ 873.8 $ 916.8 Propulsion Systems 438.6 446.0 Wing Systems 360.5 376.7 All Other 8.7 2.7 $ 1,681.6 $ 1,742.2 Segment Operating Income (Loss) Fuselage Systems $ 177.3 $ 164.5 Propulsion Systems 99.1 95.7 Wing Systems 58.8 45.2 All Other 1.9 (0.3 ) 337.1 305.1 Corporate SG&A (50.0 ) (51.6 ) Research and development (6.1 ) (7.0 ) Unallocated cost of sales (1) (14.5 ) (11.2 ) Total operating income $ 266.5 $ 235.3 (1) Includes $2.3 and $10.4 of warranty reserve for the three months ended March 31, 2016 and April 2, 2015, respectively.

Condensed Consolidating Finan44

Condensed Consolidating Financial Information (Tables)	3 Months Ended
	Mar. 31, 2016
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Income Statement	Condensed Consolidating Statements of Operations For the Three Months Ended March 31, 2016 Holdings Spirit Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Net revenues $ — $ 1,510.5 $ 95.0 $ 215.9 $ (139.8 ) $ 1,681.6 Operating costs and expenses Cost of sales — 1,214.4 91.7 192.7 (139.8 ) 1,359.0 Selling, general and administrative 1.5 44.2 0.7 3.6 — 50.0 Research and development — 5.0 0.5 0.6 — 6.1 Total operating costs and expenses 1.5 1,263.6 92.9 196.9 (139.8 ) 1,415.1 Operating (loss) income (1.5 ) 246.9 2.1 19.0 — 266.5 Interest expense and financing fee amortization — (11.3 ) — (2.1 ) 2.0 (11.4 ) Other income (expense), net — 3.9 — (4.1 ) (2.0 ) (2.2 ) (Loss) income before income taxes and equity in net income of affiliate and subsidiaries (1.5 ) 239.5 2.1 12.8 — 252.9 Income tax benefit (provision) 0.5 (78.7 ) (0.8 ) (2.9 ) — (81.9 ) (Loss) income before equity in net income of affiliate and subsidiaries (1.0 ) 160.8 1.3 9.9 — 171.0 Equity in net income of affiliate 0.6 — — 0.6 (0.6 ) 0.6 Equity in net income of subsidiaries 172.0 11.2 — — (183.2 ) — Net income 171.6 172.0 1.3 10.5 (183.8 ) 171.6 Other comprehensive (loss) income (8.0 ) (8.0 ) — (8.8 ) 16.8 (8.0 ) Comprehensive income (loss) $ 163.6 $ 164.0 $ 1.3 $ 1.7 $ (167.0 ) $ 163.6 Condensed Consolidating Statements of Operations For the Three Months Ended April 2, 2015 Holdings Spirit Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Net revenues $ — $ 1,619.0 $ 58.1 $ 186.2 $ (121.1 ) $ 1,742.2 Operating costs and expenses Cost of sales — 1,352.0 54.8 162.6 (121.1 ) 1,448.3 Selling, general and administrative 2.6 45.2 1.3 2.5 — 51.6 Research and development — 6.3 — 0.7 — 7.0 Total operating costs and expenses 2.6 1,403.5 56.1 165.8 (121.1 ) 1,506.9 Operating (loss) income (2.6 ) 215.5 2.0 20.4 — 235.3 Interest expense and financing fee amortization — (17.8 ) — (2.0 ) 1.9 (17.9 ) Other income (expense), net — 1.4 0.1 (6.0 ) (1.9 ) (6.4 ) (Loss) income before income taxes and equity in net income of affiliate and subsidiaries (2.6 ) 199.1 2.1 12.4 — 211.0 Income tax benefit (provision) 0.3 (27.1 ) (0.8 ) (1.8 ) — (29.4 ) (Loss) income before equity in net income of affiliate and subsidiaries (2.3 ) 172.0 1.3 10.6 — 181.6 Equity in net income of affiliate 0.3 — — 0.3 (0.3 ) 0.3 Equity in net income of subsidiaries 183.9 11.9 — — (195.8 ) — Net income 181.9 183.9 1.3 10.9 (196.1 ) 181.9 Other comprehensive (loss) income (14.0 ) 1.1 — (15.1 ) 14.0 (14.0 ) Comprehensive income (loss) $ 167.9 $ 185.0 $ 1.3 $ (4.2 ) $ (182.1 ) $ 167.9
Condensed Balance Sheet	Condensed Consolidating Balance Sheet March 31, 2016 Holdings Spirit Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Current assets Cash and cash equivalents $ — $ 796.3 $ — $ 26.6 $ — $ 822.9 Accounts receivable, net — 798.0 35.9 211.8 (362.5 ) 683.2 Inventory, net — 1,281.2 175.2 351.6 — 1,808.0 Other current assets — 21.4 2.3 3.8 — 27.5 Total current assets — 2,896.9 213.4 593.8 (362.5 ) 3,341.6 Property, plant and equipment, net — 1,393.0 366.2 188.0 — 1,947.2 Pension assets, net — 229.5 — 13.2 — 242.7 Investment in subsidiary 460.8 283.7 — — (744.5 ) — Equity in net assets of subsidiaries 1,659.9 257.1 — — (1,917.0 ) — Other assets — 480.5 82.1 21.3 (328.5 ) 255.4 Total assets $ 2,120.7 $ 5,540.7 $ 661.7 $ 816.3 $ (3,352.5 ) $ 5,786.9 Current liabilities Accounts payable $ — $ 573.8 $ 283.4 $ 151.1 $ (362.5 ) $ 645.8 Accrued expenses — 190.4 1.0 34.1 — 225.5 Profit sharing — 17.7 — 0.7 — 18.4 Current portion of long-term debt — 39.9 — 3.0 — 42.9 Advance payments, short-term — 192.5 — — — 192.5 Deferred revenue, short-term — 309.2 — 2.9 — 312.1 Deferred grant income liability - current — — 11.4 1.2 — 12.6 Other current liabilities — 85.9 — 2.8 — 88.7 Total current liabilities — 1,409.4 295.8 195.8 (362.5 ) 1,538.5 Long-term debt — 1,074.3 — 257.6 (248.5 ) 1,083.4 Advance payments, long-term — 452.9 — — — 452.9 Pension/OPEB obligation — 70.2 — — — 70.2 Deferred grant income liability - non-current — — 52.5 25.7 — 78.2 Deferred revenue and other deferred credits — 167.7 — 4.7 — 172.4 Other liabilities — 325.5 — 25.1 (80.0 ) 270.6 Total equity 2,120.7 2,040.7 313.4 307.4 (2,661.5 ) 2,120.7 Total liabilities and shareholders’ equity $ 2,120.7 $ 5,540.7 $ 661.7 $ 816.3 $ (3,352.5 ) $ 5,786.9 Condensed Consolidating Balance Sheet December 31, 2015 Holdings Spirit Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Current assets Cash and cash equivalents $ — $ 894.2 $ — $ 63.1 $ — $ 957.3 Accounts receivable, net — 686.3 27.1 189.4 (365.8 ) 537.0 Inventory, net — 1,229.0 179.4 365.9 0.1 1,774.4 Other current assets — 24.4 1.9 4.1 — 30.4 Total current assets — 2,833.9 208.4 622.5 (365.7 ) 3,299.1 Property, plant and equipment, net — 1,393.1 364.2 193.4 — 1,950.7 Pension assets, net — 233.3 — 13.6 — 246.9 Investment in subsidiary 623.6 283.7 — 0.1 (907.4 ) — Equity in net assets of subsidiaries 1,496.4 254.1 — — (1,750.5 ) — Other assets — 517.7 82.7 21.3 (340.9 ) 280.8 Total assets $ 2,120.0 $ 5,515.8 $ 655.3 $ 850.9 $ (3,364.5 ) $ 5,777.5 Current liabilities Accounts payable $ — $ 538.2 $ 276.4 $ 169.4 $ (365.8 ) $ 618.2 Accrued expenses — 195.0 0.5 34.7 — 230.2 Profit sharing — 58.3 — 3.3 — 61.6 Current portion of long-term debt — 32.9 — 2.7 — 35.6 Advance payments, short-term — 178.3 — — — 178.3 Deferred revenue, short-term — 281.7 — 3.8 — 285.5 Deferred grant income liability - current — — 10.8 1.1 — 11.9 Other current liabilities — 34.7 — 3.0 — 37.7 Total current liabilities — 1,319.1 287.7 218.0 (365.8 ) 1,459.0 Long-term debt — 1,088.0 — 270.6 (261.0 ) 1,097.6 Advance payments, long-term — 507.4 — — — 507.4 Pension/OPEB obligation — 67.7 — — — 67.7 Deferred grant income liability - non-current — — 55.6 26.7 — 82.3 Deferred revenue and other deferred credits — 165.6 — 4.4 — 170.0 Other liabilities — 328.2 — 25.3 (80.0 ) 273.5 Total equity 2,120.0 2,039.8 312.0 305.9 (2,657.7 ) 2,120.0 Total liabilities and shareholders’ equity $ 2,120.0 $ 5,515.8 $ 655.3 $ 850.9 $ (3,364.5 ) $ 5,777.5
Condensed Cash Flow Statement	Condensed Consolidating Statements of Cash Flows For the Three Months Ended March 31, 2016 Holdings Spirit Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Operating activities Net cash provided by (used in) operating activities $ — $ 101.5 $ 7.1 $ (14.8 ) $ — $ 93.8 Investing activities Purchase of property, plant and equipment — (37.3 ) (7.1 ) (6.0 ) — (50.4 ) Net cash used in investing activities — (37.3 ) (7.1 ) (6.0 ) — (50.4 ) Financing activities Principal payments of debt — (6.7 ) — (0.8 ) — (7.5 ) Collection on (repayment of) intercompany debt — 12.5 — (12.5 ) — — Taxes paid related to net share settlement of awards — (2.9 ) — — — (2.9 ) Excess tax benefits from share-based payment arrangements — 0.2 — — — 0.2 Proceeds (payments) from subsidiary for purchase of treasury stock 165.2 (165.2 ) — — — — Purchase of treasury stock (165.2 ) — — — — (165.2 ) Net cash used in financing activities — (162.1 ) — (13.3 ) — (175.4 ) Effect of exchange rate changes on cash and cash equivalents — — — (2.4 ) — (2.4 ) Net decrease in cash and cash equivalents for the period — (97.9 ) — (36.5 ) — (134.4 ) Cash and cash equivalents, beginning of period — 894.2 — 63.1 — 957.3 Cash and cash equivalents, end of period $ — $ 796.3 $ — $ 26.6 $ — $ 822.9 Condensed Consolidating Statements of Cash Flows For the Three Months Ended April 2, 2015 Holdings Spirit Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Operating activities Net cash provided by operating activities $ — $ 408.4 $ 9.7 $ 5.6 $ — $ 423.7 Investing activities Purchase of property, plant and equipment — (26.1 ) (9.7 ) (4.5 ) — (40.3 ) Net cash used in investing activities — (26.1 ) (9.7 ) (4.5 ) — (40.3 ) Financing activities Proceeds from issuance of debt — 535.0 — — — 535.0 Principal payments of debt — (6.7 ) — (0.8 ) — (7.5 ) Payments on term loan — (534.9 ) — — — (534.9 ) Collection on (repayment of) intercompany debt — (2.0 ) — 2.0 — — Debt issuance and financing costs — (4.7 ) — — — (4.7 ) Net cash (used in) provided by financing activities — (13.3 ) — 1.2 — (12.1 ) Effect of exchange rate changes on cash and cash equivalents — — — 0.3 — 0.3 Net increase in cash and cash equivalents for the period — 369.0 — 2.6 — 371.6 Cash and cash equivalents, beginning of period — 354.6 — 23.3 — 377.9 Cash and cash equivalents, end of period $ — $ 723.6 $ — $ 25.9 $ — $ 749.5

Organization and Basis of Int45

Organization and Basis of Interim Presentation (Details)	3 Months Ended
	Mar. 31, 2016
Variable Interest Entity [Line Items]
KIESC Ownership Percentage	77.80%
TSACCL [Member]
Variable Interest Entity [Line Items]
Ownership interest in VIE's	31.50%

Changes in Estimates (Details)

Changes in Estimates (Details) - USD ($) $ / shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2016	Apr. 02, 2015
Change In Estimate [Line Items]
Current Period Forward Loss Recorded		$ 2.9
Cumulative Catch Up Adjustment	$ 32.2	$ 12
Changes in Contract Estimates, aggregate, Affecting earnings from Continuing Operations, per Share diluted	$ 220	$ 70
Change In Accounting Estimate, aggregate	$ 47.2	$ 14.9
Reduction In Previously Reported Forward-Loss	15
Boeing - all other platforms [Member]
Change In Estimate [Line Items]
Reduction In Previously Reported Forward-Loss	3.1	2.9
Fuselage Systems [Member]
Change In Estimate [Line Items]
Current Period Forward Loss Recorded		2.9
Cumulative Catch Up Adjustment	16.2	2.7
Reduction In Previously Reported Forward-Loss	3.1
Wing Systems [Member]
Change In Estimate [Line Items]
Current Period Forward Loss Recorded	3	0
Cumulative Catch Up Adjustment	10.1	0
Wing Systems [Member] | Boeing - all other platforms [Member]
Change In Estimate [Line Items]
Current Period Forward Loss Recorded	3	0
Propulsion Systems [Member]
Change In Estimate [Line Items]
Current Period Forward Loss Recorded	8.9	0
Cumulative Catch Up Adjustment	5.9	9.3
Propulsion Systems [Member] | Boeing - all other platforms [Member]
Change In Estimate [Line Items]
Reduction In Previously Reported Forward-Loss	5.5	0
Propulsion Systems [Member] | Rolls-Royce [Member]
Change In Estimate [Line Items]
Reduction In Previously Reported Forward-Loss	$ 3.4	$ 0

Accounts Receivable, net (Detai

Accounts Receivable, net (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Accounts Receivable, Net, Current [Abstract]
Trade receivables	$ 661.3	$ 524.3
Other	28	18.8
Less: allowance for doubtful accounts	(6.1)	(6.1)
Accounts receivable, net	683.2	537
Unbilled Contracts Receivable	$ 32.3	$ 30.5

Inventory (Details)

Inventory (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Summary Of Inventories [Abstract]
Raw materials	$ 259.7	$ 253.8
Work-in-process	821.4	854.4
Finished goods	64.6	65.7
Product inventory	1,145.7	1,173.9
Capitalized pre-production	147.9	167.8
Deferred Production Costs	1,389.6	1,315.4
Forward loss provision	(875.2)	(882.7)
Total inventory, net	$ 1,808	$ 1,774.4

Inventory (Details 1)

Inventory (Details 1) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Inventory By Platform [Abstract]
Inventory	$ 1,080.3	$ 1,100.9
Non Recurring Production Costs Included In Inventory [Abstract]
Nonrecurring production cost included in inventory	65.4	73
Capitalized Preproduction Costs Included In Inventory [Abstract]
Capitalized pre-production	147.9	167.8
Deferred Production Costs	1,389.6	1,315.4
Forward loss provision	(875.2)	(882.7)
Total inventory, net	1,808	1,774.4
Reduction In Previously Reported Forward-Loss	15
B787 [Member]
Inventory By Platform [Abstract]
Inventory	213.8	222.7
Non Recurring Production Costs Included In Inventory [Abstract]
Nonrecurring production cost included in inventory	9.9	9.8
Capitalized Preproduction Costs Included In Inventory [Abstract]
Capitalized pre-production	26.6	42.1
Deferred Production Costs	591.8	558.5
Forward loss provision	(606)	(606)
Total inventory, net	236.1	227.1
Airbus Three Hundred Fifty XWB [Member]
Inventory By Platform [Abstract]
Inventory	153.3	148.7
Non Recurring Production Costs Included In Inventory [Abstract]
Nonrecurring production cost included in inventory	37.3	35.3
Capitalized Preproduction Costs Included In Inventory [Abstract]
Capitalized pre-production	92.2	94.2
Deferred Production Costs	685.2	679.4
Forward loss provision	(113.7)	(113.8)
Total inventory, net	854.3	843.8
Airbus - All other platforms [Member]
Inventory By Platform [Abstract]
Inventory	89.6	90.8
Non Recurring Production Costs Included In Inventory [Abstract]
Nonrecurring production cost included in inventory	0	0
Capitalized Preproduction Costs Included In Inventory [Abstract]
Capitalized pre-production	0	0
Deferred Production Costs	9	9.2
Forward loss provision	0	0
Total inventory, net	98.6	100
Rolls-Royce
Inventory By Platform [Abstract]
Inventory	15.4	12.5
Non Recurring Production Costs Included In Inventory [Abstract]
Nonrecurring production cost included in inventory	0	0
Capitalized Preproduction Costs Included In Inventory [Abstract]
Capitalized pre-production	23.7	25.9
Deferred Production Costs	99.1	95.7
Forward loss provision	(138.2)	(134.1)
Total inventory, net	0	0
Contract Liability	4.6	12.2
Aftermarket [Member]
Inventory By Platform [Abstract]
Inventory	56.1	54.3
Non Recurring Production Costs Included In Inventory [Abstract]
Nonrecurring production cost included in inventory	0	0
Capitalized Preproduction Costs Included In Inventory [Abstract]
Capitalized pre-production	0	0
Deferred Production Costs	0	0
Forward loss provision	0	0
Total inventory, net	56.1	54.3
Other platforms [Member]
Inventory By Platform [Abstract]
Inventory	67.3	80
Non Recurring Production Costs Included In Inventory [Abstract]
Nonrecurring production cost included in inventory	1.2	4.9
Capitalized Preproduction Costs Included In Inventory [Abstract]
Capitalized pre-production	0	0
Deferred Production Costs	6.4	5.4
Forward loss provision	0	0
Total inventory, net	74.9	90.3
Boeing - All other platforms [Member]
Inventory By Platform [Abstract]
Inventory	484.8	491.9
Non Recurring Production Costs Included In Inventory [Abstract]
Nonrecurring production cost included in inventory	17	23
Capitalized Preproduction Costs Included In Inventory [Abstract]
Capitalized pre-production	5.4	5.6
Deferred Production Costs	(1.9)	(32.8)
Forward loss provision	(17.3)	(28.8)
Total inventory, net	$ 488	$ 458.9

Inventory (Details 2)

Inventory (Details 2)	3 Months Ended
	Mar. 31, 2016ship_setpure / $
B787 [Member]
Block And Order Detail [Abstract]
Contract Block Quantity	500
Orders	746
Contract Block Deliveries	441
Airbus Three Hundred Fifty XWB [Member]
Block And Order Detail [Abstract]
Contract Block Quantity	400
Orders	758
Contract Block Deliveries	78
Rolls-Royce
Block And Order Detail [Abstract]
Contract Block Quantity	350
Orders	257
Contract Block Deliveries	206

Property, Plant and Equipment51

Property, Plant and Equipment (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Property, plant and equipment, net
Land	$ 16.1	$ 16.5
Buildings (including improvements)	595.2	585.4
Machinery and equipment	1,248.9	1,210.6
Tooling	943.3	927.2
Capitalized software	230.9	219.7
Construction-in-progress	244.2	278.6
Total	3,278.6	3,238
Less: accumulated depreciation	(1,331.4)	(1,287.3)
Property, plant and equipment, net	$ 1,947.2	$ 1,950.7

Property, Plant and Equipment52

Property, Plant and Equipment (Details Textual) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Apr. 02, 2015
Property Plant And Equipment Textuals [Abstract]
Capitalized interest related to construction-in-progress	$ 2.1	$ 1.3
Repair and maintenance costs	26.6	30.3
Depreciation expense related to capitalized software	$ 4.5	$ 4.2

Other Assets (Details)

Other Assets (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Intangible assets
Total intangible assets	$ 8.2	$ 8.2
Intangible assets, net	2.7	2.8
Deferred financing costs	105.8	105.8
Less: Accumulated amortization-deferred financing costs	(87.4)	(86.3)
Deferred financing costs, net	18.4	19.5
Goodwill - Europe	2.6	2.7
Equity in net assets of affiliates	3.7	3.2
Customer Supply Agreement	25.6	29.3
Restricted Cash and Investments, Noncurrent	19.9	19.9
Deferred Tax Assets, Net, Noncurrent	141.8	162.8
Other	40.7	40.6
Total	255.4	280.8
Patents [Member]
Intangible assets
Total intangible assets	1.9	1.9
Less: Accumulated amortization	(1.6)	(1.6)
Favorable Leasehold Interests [Member]
Intangible assets
Total intangible assets	6.3	6.3
Less: Accumulated amortization	$ (3.9)	$ (3.8)

Other Assets (Details Textuals)

Other Assets (Details Textuals) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Other Assets, Noncurrent [Abstract]
Deferred Finance Charge Debt Extinguishment	$ 0	$ 3.1

Advance Payments and Deferred55

Advance Payments and Deferred Revenue/Credits (Details) $ in Millions	3 Months Ended
	Mar. 31, 2016USD ($)pure / $	Dec. 31, 2015USD ($)
Advance payments and deferred revenue/credits summarized
Advance Payments And Deferred Revenue Credits	$ 1,129.9	$ 1,141.2
B737 [Member]
Advance payments and deferred revenue/credits summarized
Advance Payments And Deferred Revenue Credits	13.2	13.8
B787 [Member]
Advance payments and deferred revenue/credits summarized
Advance Payments And Deferred Revenue Credits	923.5	909.3
Airbus Three Hundred Fifty XWB [Member]
Advance payments and deferred revenue/credits summarized
Advance Payments And Deferred Revenue Credits	162.4	183.5
Airbus - All other platforms [Member]
Advance payments and deferred revenue/credits summarized
Advance Payments And Deferred Revenue Credits	4.1	4
Other Inventory [Member]
Advance payments and deferred revenue/credits summarized
Advance Payments And Deferred Revenue Credits	$ 26.7	$ 30.6
Minimum [Member]
Advance payments and deferred revenue/credits summarized
Boeing Advance Payment ShipSet	1,001
Maximum [Member]
Advance payments and deferred revenue/credits summarized
Boeing Advance Payment ShipSet	1,120

Government Grants (Details)

Government Grants (Details) $ in Millions	3 Months Ended
	Mar. 31, 2016USD ($)
Deferred Grant Income Liability Net [Abstract]
Deferred Grant Income Liability	$ 94.2
Grant Liability Recorded	(2.7)
Deferred Grant Income Liability	90.8
Exchange Rate Effect On Deferred Grant Income Liability	$ (0.7)

Government Grants (Details 1)

Government Grants (Details 1) $ in Millions	3 Months Ended
	Mar. 31, 2016USD ($)
Asset Related To Deferred Grant Income Net [Abstract]
Asset Related To Deferred Grant Income Beginning Balance	$ 106.6
Amortization	(1.3)
Exchange rate	(0.7)
Asset Related To Deferred Grant Income Ending Balance	$ 104.6

Government Grants (Details Text

Government Grants (Details Textuals)	3 Months Ended
	Mar. 31, 2016
Government Grants Textuals [Abstract]
Deferred Grant Income Amortization Period	10 years

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Carrying amount and estimated fair value of long term debt
Carrying Amount	$ 1,104.1	$ 1,111
Fair Value	1,122.1	1,119.7
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Money Market Fund [Member]
Fair Value Measurements
Money Market Fund	22.2	90.2
Reported Value Measurement [Member] | Money Market Fund [Member]
Fair Value Measurements
Money Market Fund	22.2	90.2
Assets Measured At Fair Value [Member] | Money Market Fund [Member]
Fair Value Measurements
Money Market Fund	22.2	90.2
Liabilities Measured At Fair Value [Member] | Money Market Fund [Member]
Fair Value Measurements
Money Market Fund	0	0
Secured Debt Term A [Member]
Debt Instrument [Line Items]
Secured Debt, Current	26.8	26.8
Secured Long-term Debt, Noncurrent	474.8	481.5
Carrying amount and estimated fair value of long term debt
Carrying Amount	501.6	508.3
Fair Value	497.5	501.6
Senior Unsecured Notes Due 2020 [Member]
Carrying amount and estimated fair value of long term debt
Carrying Amount	300	300
Fair Value	311.2	310.5
Senior unsecured notes due 2022 [Member]
Carrying amount and estimated fair value of long term debt
Carrying Amount	299.5	299.5
Fair Value	310.8	304.8
Malaysian loan [Member]
Carrying amount and estimated fair value of long term debt
Carrying Amount	3	3.2
Fair Value	$ 2.6	$ 2.8

Derivative and Hedging Activi60

Derivative and Hedging Activities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Apr. 02, 2015
Derivative [Line Items]
Interest Rate Swaps [Table Text Block]	During the first quarter of 2015, as a result of Amendment No. 5 to its Credit Agreement, the Company unwound its interest rate swap agreements which had a notional amount of $250.0 . The company recognized a loss of $0.4 as a result of unwinding these interest rate swaps. This loss on derivatives not designated as hedging instruments is included in Other Expense on the Consolidated Statement of Operations for the three months ended April 2, 2015. In total, the Company paid $2.0 as a result of the settlement of the interest rate swap agreements. As of March 31, 2016 and December 31, 2015, the Company had no outstanding interest rate swap agreements.
Interest Rate Swaps
Derivative Instruments Not Designated as Hedging Instruments, Loss		$ 0.4
Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount, Unwound swap		$ 250

Derivative and Hedging Activi61

Derivative and Hedging Activities (Details Textual) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Apr. 02, 2015
Derivatives Fair Value [Line Items]
Total payment of swap settlement		$ 2
LIBOR floor	0.75%
Interest Rate Swap [Member]
Derivatives Fair Value [Line Items]
Derivative, Notional Amount, Unwound swap		$ 250

Debt (Details)

Debt (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Long Term Debt And Capital Lease Obligations Current And Non Current [Abstract]
Loans Payable to Bank, Current	$ 2.4	$ 2.1
Loans Payable to Bank, Noncurrent	0.6	1.1
Capital Lease Obligations, Current	0.6	0.6
Capital Lease Obligations, Noncurrent	8.5	8.5
Other Long-term Debt, Current	13.1	6.1
Other Long-term Debt, Noncurrent	0	7
Long-term Debt and Capital Lease Obligations, Current	42.9	35.6
Long-term Debt and Capital Lease Obligations	1,083.4	1,097.6
Secured Debt Term A [Member]
Debt Disclosure [Abstract]
Secured Debt, Current	26.8	26.8
Secured Long-term Debt, Noncurrent	474.8	481.5
Senior Unsecured Notes Due 2020 [Member]
Long Term Debt And Capital Lease Obligations Current And Non Current [Abstract]
Senior Notes, Current	0	0
Senior Notes, Noncurrent	300	300
Senior unsecured notes due 2022 [Member]
Long Term Debt And Capital Lease Obligations Current And Non Current [Abstract]
Senior Notes, Current	0	0
Senior Notes, Noncurrent	$ 299.5	$ 299.5

Debt (Details Textual)

Debt (Details Textual) $ in Millions	Mar. 18, 2014USD ($)	Nov. 18, 2010USD ($)	Mar. 31, 2016USD ($)	Apr. 02, 2015USD ($)	Mar. 18, 2015USD ($)
Debt Instrument [Line Items]
Senior Secured Credit Facility Term Libor Floor			0.75%
MinimumAdjustmentMarginOnLibor					1.75%
MaximumAdjustmentMarginOnLibor					2.50%
Minimum Adjustment Margin on Base Rate					0.75%
Maximum Adjustment Margin on Base Rate					1.50%
Senior Unsecured Notes Due 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 300
Debt Instrument, Interest Rate, Stated Percentage		6.75%
MaturityDatefor2020Notes		Dec. 15, 2020
Senior Notes			$ 300
Senior unsecured notes due 2022 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 300
Debt Instrument, Interest Rate, Stated Percentage	5.25%
Senior Notes			$ 299.5
Maturity Date 2022 Notes	Mar. 15, 2022
Amendment Three Term Loan Due 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 534.9
Maturity Date 2012 Senior Secured Credit Facility Term			Sep. 15, 2020
Amendment Five Term Loan Due 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 535
Maturity Date 2012 Senior Secured Credit Facility Term			Mar. 18, 2020
Credit Agreement Margin on LIBOR					0.0175
Margin On Base Rate Borrowing Term Loan					0.75%
Outstanding Balance Term Loan			$ 501.6
Gains (Losses) on Extinguishment of Debt				$ 3.6
Extinguishment Included In Cash Flow Deferred Financing Fees				3.1
Extinguishment Included In Cash Flow Amortization Expense				$ 0.5
Debt Instrument, Periodic Payment, Principal			$ 6.7

Pension and Other Post Retireme

Pension and Other Post Retirement Benefits (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Apr. 02, 2015
Defined Benefit Plans [Member]
Pension and Other Post-Retirement Benefits
Service cost	$ 0.3	$ 0.3
Interest cost	11.7	12
Expected return on plan assets	(19.5)	(20.7)
Amortization of net loss	0.7	1
Defined Benefit Plan, Special Termination Benefits	11	0
Net periodic pension income	4.2	(7.4)
Other Benefits [Member]
Pension and Other Post-Retirement Benefits
Service cost	0.6	0.7
Interest cost	0.6	0.6
Amortization of net loss	(0.1)	0
Defined Benefit Plan, Special Termination Benefits	3.1	0
Net periodic pension income	4.2	$ 1.3
U.K. pension plan [Member]
Pension And Other Post Retirement Benefits Textuals [Abstract]
Expected UK Pension Plan Contribution For The Year	0
Supplemental Executive Retirement Plan [Member]
Pension And Other Post Retirement Benefits Textuals [Abstract]
Defined Benefit Plan Estimated Future Employer Contributions Remainder Of Year	$ 6.8

Stock Compensation (Details)

Stock Compensation (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Apr. 02, 2015	Apr. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service Based Portion of LTIA			75.00%
Market Based Portion of LTIA			25.00%
Company recognized total stock compensation expense, net of forfeitures	$ 5.3	$ 6.9
Service Based LTIP Vesting Period	3 years
LTIA AND Prior Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Company recognized total stock compensation expense, net of forfeitures	$ 5.3	6.9
Class A [Member] | Service Based LTIA [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted	492,624
Grant date value of shares vested	$ 21.4
Class A [Member] | Market Based LTIA [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted	125,894
Grant date value of shares vested	$ 6.8
Class A [Member] | Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Vested	102,943
Grant date value of shares vested	$ 5
Selling General And Administrative Expense [Member] | LTIA AND Prior Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Company recognized total stock compensation expense, net of forfeitures	$ 5.3	$ 6.9

Income Tax (details)

Income Tax (details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Apr. 02, 2015	Dec. 31, 2015
Income Taxes Textuals [Abstract]
Deferred tax assets net total	$ (126.5)		$ (149.7)
Valuation Allowance [Line Items]
Taxes Payable, Current	$ 54.4		$ 3
Effective tax rate	32.40%	13.90%

Equity (Details)

Equity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2016	Apr. 02, 2015	Dec. 31, 2015
Derivatives, Fair Value [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (168.5)		$ (160.5)
Basic EPS
Income available to common shareholders	$ 171.5	$ 181.7
Income available to common shareholders, shares	131.6	138.9
Income available to common shareholders, per share amount	$ 1.30	$ 1.31
Income allocated to participating securities	$ 0.1	$ 0.2
Income allocated to participating securities, shares	0.1	0.1
Net income	$ 171.6	$ 181.9
Diluted potential common shares	1	1.4
Diluted EPS
Net income	$ 171.6	$ 181.9
Shares	132.7	140.4
Per share amount	$ 1.29	$ 1.30
Equity Textuals [Abstract]
Common shares, outstanding	132.5	141.7
Common shares outstanding issued but unvested	2.2	2.8
Noncontrolling interest	$ 0.5		0.5
Pension [Member]
Derivatives, Fair Value [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(121)		(121.5)
SERP and Retiree medical [Member]
Derivatives, Fair Value [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	6		6.1
Foreign currency impact on long term intercompany loan [Member]
Derivatives, Fair Value [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(10.3)		(9.2)
Currency translation adjustment [Member]
Derivatives, Fair Value [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(43.2)		(35.5)
Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	$ 0		$ (0.4)

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Apr. 02, 2015	Dec. 31, 2015	Sep. 26, 2013
Related Party Transaction, Due from (to) Related Party [Abstract]
Amount paid for services rendered ($0.1 and less than $0.1 respectively)	$ 4.7	$ 5.9
Amounts owed to supplier and recorded as accrued liabilities	$ 1.4		$ 4	$ 0.1

Commitments, Contingencies an69

Commitments, Contingencies and Guarantees (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Apr. 02, 2015	Dec. 31, 2015
Commitments Contingencies And Guarantees [Abstract]
Loss Contingency Accrual	$ 25		$ 25
Current Period Forward Loss Recorded		$ 2.9
Service warranty roll forward
Product Warranty And Extraordinary Rework	158.7
Charges to costs and expenses	1.8
Product Warranty Accrual, Payments	(2.8)
Product Warranty And Extraordinary Rework	157.6
Product Warranty Extraordinary Rework Accrual Currency Translation Increase Decrease	(0.1)
Commitments Contingencies And Guarantees Textuals [Abstract]
Outstanding amount of guarantees	22.2		20.1
Restricted Cash and Investments, Noncurrent	$ 19.9		$ 19.9

Other Income (Expense), Net (De

Other Income (Expense), Net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Apr. 02, 2015
Other Nonoperating Income (Expense) [Abstract]
KDFA bond	$ 1.1	$ 1.2
Rental and miscellaneous income (expense)(1)	0.1	(1.9)
Interest Income, Other	0.8	0.2
Foreign currency losses	(4.2)	(5.9)
Total	$ (2.2)	(6.4)
Loss on Derivative Settlement		$ 2

Segment Information (Details)

Segment Information (Details) $ in Millions	3 Months Ended
	Mar. 31, 2016USD ($)customersegment	Apr. 02, 2015USD ($)
Segment Revenues
Revenues	$ 1,681.6	$ 1,742.2
Segment Operating Income
Business Segment Operating Income	337.1	305.1
Segment Information Unallocated Corporate Selling General And Administrative	(50)	(51.6)
Segment Information Unallocated Research And Development	(6.1)	(7)
Segment Information Unallocated Cost Of Sales	(14.5)	(11.2)
Operating income	266.5	235.3
Segment Reporting Information, Additional Information [Abstract]
Forward Loss Recorded For The Period		2.9
Reduction In Previously Reported Forward-Loss	$ 15
Number Of Principal Segments | segment	3
Percentage Of Net Revenue Derived From Two Largest Customers	96.00%
Number Of Largest Customers | customer	2
Cumulative Catch Up Adjustment	$ 32.2	12
Product Warranty Expense	2.3	10.4
Early Retirement Incentive	11.8
Fuselage Systems [Member]
Segment Revenues
Segment Revenues	873.8	916.8
Segment Operating Income
Business Segment Operating Income	177.3	164.5
Segment Reporting Information, Additional Information [Abstract]
Forward Loss Recorded For The Period		2.9
Reduction In Previously Reported Forward-Loss	3.1
Cumulative Catch Up Adjustment	16.2	2.7
Propulsion Systems [Member]
Segment Revenues
Segment Revenues	438.6	446
Segment Operating Income
Business Segment Operating Income	99.1	95.7
Segment Reporting Information, Additional Information [Abstract]
Forward Loss Recorded For The Period	8.9	0
Cumulative Catch Up Adjustment	5.9	9.3
Wing Systems [Member]
Segment Revenues
Segment Revenues	360.5	376.7
Segment Operating Income
Business Segment Operating Income	58.8	45.2
Segment Reporting Information, Additional Information [Abstract]
Forward Loss Recorded For The Period	3	0
Cumulative Catch Up Adjustment	10.1	0
Other Systems [Member]
Segment Revenues
Segment Revenues	8.7	2.7
Segment Operating Income
Business Segment Operating Income	$ 1.9	$ (0.3)

Condensed Consolidating Finan72

Condensed Consolidating Financial Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Apr. 02, 2015	Mar. 31, 2016	Dec. 31, 2015
Condensed Consolidating Statements of Operations [Abstract]
Net revenues	$ 1,681.6	$ 1,742.2
Operating costs and expenses
Cost of sales	1,359	1,448.3
Selling, general and administrative	50	51.6
Research and development	6.1	7
Total operating costs and expenses	1,415.1	1,506.9
Operating income	266.5	235.3
Interest expense and financing fee amortization	(11.4)	(17.9)
Other expense, net	(2.2)	(6.4)
Income (loss) before income taxes and equity in net loss of affiliates and subsidiaries	252.9	211
Income tax provision	(81.9)	(29.4)
Income (loss) Before Equity In Net Income (Loss) Of Affiliates and Subsidiaries	171	181.6
Equity in net income of affiliate	0.6	0.3
Equity in net income of subsidiaries	0
Net income	171.6	181.9
Total other comprehensive income (loss)	(8)	(14)
Comprehensive Income, Net of Tax, Attributable to Parent	163.6	167.9
Current assets
Cash and cash equivalents	957.3	377.9	$ 822.9	$ 957.3
Accounts receivable, net			683.2	537
Inventory			1,808	1,774.4
Other current assets			27.5	30.4
Total current assets			3,341.6	3,299.1
Property, plant and equipment, net			1,947.2	1,950.7
Pension assets			242.7	246.9
Other assets			255.4	280.8
Total assets			5,786.9	5,777.5
Current liabilities
Accounts payable			645.8	618.2
Accrued expenses			225.5	230.2
Profit sharing			18.4	61.6
Current portion of long-term debt			42.9	35.6
Advance payments, short-term			192.5	178.3
Deferred revenue, short-term			312.1	285.5
Deferred grant income liability - current			12.6	11.9
Other current liabilities			88.7	37.7
Total current liabilities			1,538.5	1,459
Long-term debt			1,083.4	1,097.6
Advance payments, long-term			452.9	507.4
Pension/OPEB obligation			70.2	67.7
Deferred grant income liability - non-current			78.2	82.3
Deferred revenue and other deferred credits			172.4	170
Other liabilities			270.6	273.5
Total equity			2,120.7	2,120
Total liabilities and equity			5,786.9	5,777.5
Operating activities
Net cash (used in) operating activities	93.8	423.7
Investing activities
Purchase of property, plant and equipment	(50.4)	(40.3)
Net cash used in investing activities	(50.4)	(40.3)
Financing activities
Principal payments of debt	(7.5)	(7.5)
Repayments of Debt	0	(534.9)
Payments Related to Tax Withholding for Share-based Compensation	(2.9)	0
Proceeds from Issuance of Long-term Debt	0	535
Debt issuance and financing costs	0	(4.7)
Proceeds from (Payments for) Other Financing Activities	0
Payments for Repurchase of Common Stock	165.2	0
Excess tax benefit of share-based payment arrangements	0.2	0
Net cash used in financing activities	(175.4)	(12.1)
Effect of exchange rate changes on cash and cash equivalents	(2.4)	0.3
Net (decrease) increase in cash and cash equivalents for the period	(134.4)	371.6
Cash and cash equivalents, beginning of period	957.3	377.9
Cash and cash equivalents, end of period	822.9	749.5
Holdings [Member]
Operating costs and expenses
Selling, general and administrative	1.5	2.6
Total operating costs and expenses	1.5	2.6
Operating income	(1.5)	(2.6)
Income (loss) before income taxes and equity in net loss of affiliates and subsidiaries	(1.5)	(2.6)
Income tax provision	0.5	0.3
Income (loss) Before Equity In Net Income (Loss) Of Affiliates and Subsidiaries	(1)	(2.3)
Equity in net income of affiliate	0.6	0.3
Equity in net income of subsidiaries	172	183.9
Net income	171.6	181.9
Total other comprehensive income (loss)	(8)	(14)
Comprehensive Income, Net of Tax, Attributable to Parent	163.6	167.9
Current assets
Investment in subsidiary			460.8	623.6
Equity In Net Assets Of Subsidiaries			1,659.9	1,496.4
Total assets			2,120.7	2,120
Current liabilities
Total equity			2,120.7	2,120
Total liabilities and equity			2,120.7	2,120
Financing activities
Repayments of Debt		0
Payments Related to Tax Withholding for Share-based Compensation	0
Proceeds from (Payments for) Other Financing Activities	165.2
Payments for Repurchase of Common Stock	165.2
Spirit [Member]
Condensed Consolidating Statements of Operations [Abstract]
Net revenues	1,510.5	1,619
Operating costs and expenses
Cost of sales	1,214.4	1,352
Selling, general and administrative	44.2	45.2
Research and development	5	6.3
Total operating costs and expenses	1,263.6	1,403.5
Operating income	246.9	215.5
Interest expense and financing fee amortization	(11.3)	(17.8)
Other expense, net	3.9	1.4
Income (loss) before income taxes and equity in net loss of affiliates and subsidiaries	239.5	199.1
Income tax provision	(78.7)	(27.1)
Income (loss) Before Equity In Net Income (Loss) Of Affiliates and Subsidiaries	160.8	172
Equity in net income of subsidiaries	11.2	11.9
Net income	172	183.9
Total other comprehensive income (loss)	(8)	1.1
Comprehensive Income, Net of Tax, Attributable to Parent	164	185
Current assets
Cash and cash equivalents	894.2	354.6	796.3	894.2
Accounts receivable, net			798	686.3
Inventory			1,281.2	1,229
Other current assets			21.4	24.4
Total current assets			2,896.9	2,833.9
Property, plant and equipment, net			1,393	1,393.1
Pension assets			229.5	233.3
Investment in subsidiary			283.7	283.7
Equity In Net Assets Of Subsidiaries			257.1	254.1
Other assets			480.5	517.7
Total assets			5,540.7	5,515.8
Current liabilities
Accounts payable			573.8	538.2
Accrued expenses			190.4	195
Profit sharing			17.7	58.3
Current portion of long-term debt			39.9	32.9
Advance payments, short-term			192.5	178.3
Deferred revenue, short-term			309.2	281.7
Other current liabilities			85.9	34.7
Total current liabilities			1,409.4	1,319.1
Long-term debt			1,074.3	1,088
Advance payments, long-term			452.9	507.4
Pension/OPEB obligation			70.2	67.7
Deferred revenue and other deferred credits			167.7	165.6
Other liabilities			325.5	328.2
Total equity			2,040.7	2,039.8
Total liabilities and equity			5,540.7	5,515.8
Operating activities
Net cash (used in) operating activities	101.5	408.4
Investing activities
Purchase of property, plant and equipment	(37.3)	(26.1)
Net cash used in investing activities	(37.3)	(26.1)
Financing activities
Principal payments of debt	(6.7)	(6.7)
Repayments of Debt		(534.9)
Collection on (repayment of) intercompany debt	12.5	(2)
Payments Related to Tax Withholding for Share-based Compensation	(2.9)
Proceeds from Issuance of Long-term Debt		535
Debt issuance and financing costs		(4.7)
Proceeds from (Payments for) Other Financing Activities	(165.2)
Excess tax benefit of share-based payment arrangements	0.2
Net cash used in financing activities	(162.1)	(13.3)
Net (decrease) increase in cash and cash equivalents for the period	(97.9)	369
Cash and cash equivalents, beginning of period	894.2	354.6
Cash and cash equivalents, end of period	$ 796.3	723.6
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Ownership percentage in domestic subsidiaries	100.00%
Condensed Consolidating Statements of Operations [Abstract]
Net revenues	$ 95	58.1
Operating costs and expenses
Cost of sales	91.7	54.8
Selling, general and administrative	0.7	1.3
Research and development	0.5
Total operating costs and expenses	92.9	56.1
Operating income	2.1	2
Other expense, net		0.1
Income (loss) before income taxes and equity in net loss of affiliates and subsidiaries	2.1	2.1
Income tax provision	(0.8)	(0.8)
Income (loss) Before Equity In Net Income (Loss) Of Affiliates and Subsidiaries	1.3	1.3
Net income	1.3	1.3
Comprehensive Income, Net of Tax, Attributable to Parent	1.3	1.3
Current assets
Accounts receivable, net			35.9	27.1
Inventory			175.2	179.4
Other current assets			2.3	1.9
Total current assets			213.4	208.4
Property, plant and equipment, net			366.2	364.2
Other assets			82.1	82.7
Total assets			661.7	655.3
Current liabilities
Accounts payable			283.4	276.4
Accrued expenses			1	0.5
Deferred grant income liability - current			11.4	10.8
Total current liabilities			295.8	287.7
Deferred grant income liability - non-current			52.5	55.6
Total equity			313.4	312
Total liabilities and equity			661.7	655.3
Operating activities
Net cash (used in) operating activities	7.1	9.7
Investing activities
Purchase of property, plant and equipment	(7.1)	(9.7)
Net cash used in investing activities	(7.1)	(9.7)
Financing activities
Repayments of Debt		0
Payments Related to Tax Withholding for Share-based Compensation	0
Proceeds from (Payments for) Other Financing Activities	0
Non-Guarantor Subsidiaries [Member]
Condensed Consolidating Statements of Operations [Abstract]
Net revenues	215.9	186.2
Operating costs and expenses
Cost of sales	192.7	162.6
Selling, general and administrative	3.6	2.5
Research and development	0.6	0.7
Total operating costs and expenses	196.9	165.8
Operating income	19	20.4
Interest expense and financing fee amortization	(2.1)	(2)
Other expense, net	(4.1)	(6)
Income (loss) before income taxes and equity in net loss of affiliates and subsidiaries	12.8	12.4
Income tax provision	(2.9)	(1.8)
Income (loss) Before Equity In Net Income (Loss) Of Affiliates and Subsidiaries	9.9	10.6
Equity in net income of affiliate	0.6	0.3
Net income	10.5	10.9
Total other comprehensive income (loss)	(8.8)	(15.1)
Comprehensive Income, Net of Tax, Attributable to Parent	1.7	(4.2)
Current assets
Cash and cash equivalents	63.1	23.3	26.6	63.1
Accounts receivable, net			211.8	189.4
Inventory			351.6	365.9
Other current assets			3.8	4.1
Total current assets			593.8	622.5
Property, plant and equipment, net			188	193.4
Pension assets			13.2	13.6
Investment in subsidiary				0.1
Other assets			21.3	21.3
Total assets			816.3	850.9
Current liabilities
Accounts payable			151.1	169.4
Accrued expenses			34.1	34.7
Profit sharing			0.7	3.3
Current portion of long-term debt			3	2.7
Deferred revenue, short-term			2.9	3.8
Deferred grant income liability - current			1.2	1.1
Other current liabilities			2.8	3
Total current liabilities			195.8	218
Long-term debt			257.6	270.6
Deferred grant income liability - non-current			25.7	26.7
Deferred revenue and other deferred credits			4.7	4.4
Other liabilities			25.1	25.3
Total equity			307.4	305.9
Total liabilities and equity			816.3	850.9
Operating activities
Net cash (used in) operating activities	(14.8)	5.6
Investing activities
Purchase of property, plant and equipment	(6)	(4.5)
Net cash used in investing activities	(6)	(4.5)
Financing activities
Principal payments of debt	(0.8)	(0.8)
Repayments of Debt		0
Collection on (repayment of) intercompany debt	(12.5)	2
Payments Related to Tax Withholding for Share-based Compensation	0
Proceeds from (Payments for) Other Financing Activities	0
Net cash used in financing activities	(13.3)	1.2
Effect of exchange rate changes on cash and cash equivalents	(2.4)	0.3
Net (decrease) increase in cash and cash equivalents for the period	(36.5)	2.6
Cash and cash equivalents, beginning of period	63.1	23.3
Cash and cash equivalents, end of period	26.6	25.9
Consolidating Adjustments [Member]
Condensed Consolidating Statements of Operations [Abstract]
Net revenues	(139.8)	(121.1)
Operating costs and expenses
Cost of sales	(139.8)	(121.1)
Total operating costs and expenses	(139.8)	(121.1)
Interest expense and financing fee amortization	2	1.9
Other expense, net	(2)	(1.9)
Equity in net income of affiliate	(0.6)	(0.3)
Equity in net income of subsidiaries	(183.2)	(195.8)
Net income	(183.8)	(196.1)
Total other comprehensive income (loss)	16.8	14
Comprehensive Income, Net of Tax, Attributable to Parent	(167)	(182.1)
Current assets
Accounts receivable, net			(362.5)	(365.8)
Inventory				0.1
Total current assets			(362.5)	(365.7)
Investment in subsidiary			(744.5)	(907.4)
Equity In Net Assets Of Subsidiaries			(1,917)	(1,750.5)
Other assets			(328.5)	(340.9)
Total assets			(3,352.5)	(3,364.5)
Current liabilities
Accounts payable			(362.5)	(365.8)
Total current liabilities			(362.5)	(365.8)
Long-term debt			(248.5)	(261)
Other liabilities			(80)	(80)
Total equity			(2,661.5)	(2,657.7)
Total liabilities and equity			$ (3,352.5)	$ (3,364.5)
Financing activities
Repayments of Debt		$ 0
Payments Related to Tax Withholding for Share-based Compensation	0
Proceeds from (Payments for) Other Financing Activities	$ 0