Esterline Technologies 10-Q 4 May 18 2018 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Mar. 30, 2018	May 01, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2
Trading Symbol	ESL
Entity Registrant Name	ESTERLINE TECHNOLOGIES CORP
Entity Central Index Key	33,619
Current Fiscal Year End Date	--09-28
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		29,427,834

CONSOLIDATED BALANCE SHEET (Una

CONSOLIDATED BALANCE SHEET (Unaudited) - USD ($) $ in Thousands	Mar. 30, 2018	Sep. 29, 2017
Current Assets
Cash and cash equivalents	$ 367,954	$ 307,826
Accounts receivable, net of allowances of $14,974 and $16,035	404,516	430,524
Inventories
Raw materials and purchased parts	195,562	194,034
Work in progress	189,633	178,191
Finished goods	105,877	105,744
Inventories	491,072	477,969
Income tax refundable	19,930	12,814
Prepaid expenses	22,202	19,239
Other current assets	10,893	13,836
Current assets of businesses held for sale	4,300	6,501
Total Current Assets	1,320,867	1,268,709
Property, Plant and Equipment	836,706	862,715
Accumulated depreciation	507,981	514,081
Total Property, Plant and Equipment	328,725	348,634
Other Non-Current Assets
Goodwill	1,060,668	1,053,573
Intangibles, net	341,483	359,166
Deferred income tax benefits	56,600	56,793
Other assets	17,066	19,804
Non-current assets of businesses held for sale	14,118	13,334
Total Assets	3,139,527	3,120,013
Current Liabilities
Accounts payable	148,414	138,595
Accrued liabilities	226,227	230,007
Current maturities of long-term debt	15,170	17,424
U.S. and foreign income taxes	7,722	582
Current liabilities of businesses held for sale	4,529	7,184
Total Current Liabilities	402,062	393,792
Long-Term Liabilities
Credit facilities	45,000	50,000
Long-term debt, net of current maturities	721,082	709,424
Deferred income tax liabilities	41,699	43,978
Pension and post-retirement obligations	66,639	66,981
Long-term U.S. income taxes payable	38,640	0
Other liabilities	17,138	18,838
Non-current liabilities of businesses held for sale	3,107	1,724
Shareholders' Equity
Common stock, par value $.20 per share, authorized 60,000,000 shares, issued 33,164,361 and 33,117,473 shares	6,633	6,623
Additional paid-in capital	746,946	738,329
Treasury stock at cost, repurchased 3,737,327 and 3,135,927 shares	(351,964)	(308,514)
Retained earnings	1,644,083	1,655,187
Accumulated other comprehensive loss	(252,743)	(266,870)
Total Esterline Shareholders' Equity	1,792,955	1,824,755
Noncontrolling interests	11,205	10,521
Total Shareholders' Equity	1,804,160	1,835,276
Total Liabilities and Shareholders' Equity	$ 3,139,527	$ 3,120,013

CONSOLIDATED BALANCE SHEET (Par

CONSOLIDATED BALANCE SHEET (Parenthetical) (Unaudited) - USD ($) $ in Thousands	Mar. 30, 2018	Sep. 29, 2017
Statement Of Financial Position [Abstract]
Accounts receivable, allowances	$ 14,974	$ 16,035
Common stock, par value	$ 0.20	$ 0.20
Common stock, shares authorized	60,000,000	60,000,000
Common stock, shares issued	33,164,361	33,117,473
Treasury stock, shares repurchased	3,737,327	3,135,927

CONSOLIDATED STATEMENT OF OPERA

CONSOLIDATED STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2018	Mar. 31, 2017	Mar. 30, 2018	Mar. 31, 2017
Income Statement [Abstract]
Net Sales	$ 517,629	$ 509,131	$ 999,674	$ 967,547
Cost of Sales	353,902	331,925	687,611	647,429
Gross Profit	163,727	177,206	312,063	320,118
Expenses
Selling, general & administrative	102,036	97,924	200,922	193,034
Research, development and engineering	24,725	29,041	50,567	50,747
License fee income	(2,268)	0	(5,293)	0
Loss on sale of business	5,310	0	5,310	0
Insurance recovery	0	(5,189)	0	(7,789)
Total Expenses	129,803	121,776	251,506	235,992
Operating Earnings from Continuing Operations	33,924	55,430	60,557	84,126
Interest Income	(449)	(100)	(747)	(196)
Interest Expense	8,167	7,458	15,771	15,346
Earnings from Continuing Operations Before Income Taxes	26,206	48,072	45,533	68,976
Income Tax Expense	2,079	13,080	55,868	12,617
Earnings (Loss) from Continuing Operations Including Noncontrolling Interests	24,127	34,992	(10,335)	56,359
Earnings Attributable to Noncontrolling Interests	(173)	(552)	(526)	(791)
Earnings (Loss) from Continuing Operations Attributable to Esterline, Net of Tax	23,954	34,440	(10,861)	55,568
Loss from Discontinued Operations Attributable to Esterline, Net of Tax	(77)	(34)	(243)	(5,370)
Net Earnings (Loss) Attributable to Esterline	$ 23,877	$ 34,406	$ (11,104)	$ 50,198
Earnings (Loss) Per Share Attributable to Esterline - Basic:
Continuing operations	$ 0.81	$ 1.16	$ (0.36)	$ 1.87
Discontinued operations	0	0	(0.01)	(0.18)
Earnings (Loss) Per Share	0.81	1.16	(0.37)	1.69
Earnings (Loss) Per Share Attributable to Esterline - Diluted:
Continuing operations	0.80	1.15	(0.36)	1.86
Discontinued operations	0	0	(0.01)	(0.18)
Earnings (Loss) Per Share	$ 0.80	$ 1.15	$ (0.37)	$ 1.68
Net Earnings (Loss)	$ 23,877	$ 34,406	$ (11,104)	$ 50,198
Change in Fair Value of Derivative Financial Instruments	(6,813)	5,909	(7,373)	(932)
Income Tax Expense (Benefit)	(1,824)	1,428	(1,934)	(481)
Change in Fair Value of Derivative Financial Instruments, Net of Tax	(4,989)	4,481	(5,439)	(451)
Change in Pension and Post-Retirement Obligations	1,019	1,063	1,861	3,596
Income Tax Expense	177	260	474	1,252
Change in Pension and Post-Retirement Obligations, Net of Tax	842	803	1,387	2,344
Foreign Currency Translation Adjustment	11,825	16,184	18,179	(36,837)
Comprehensive Income	$ 31,555	$ 55,874	$ 3,023	$ 15,254

CONSOLIDATED STATEMENT OF CASH

CONSOLIDATED STATEMENT OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Mar. 30, 2018	Mar. 31, 2017
Cash Flows Provided (Used) by Operating Activities
Net earnings (loss) including noncontrolling interests	$ (10,578)	$ 50,989
Adjustments to reconcile net earnings (loss) including noncontrolling interests to net cash provided (used) by operating activities:
Depreciation and amortization	54,303	51,169
Deferred income taxes	(1,327)	(8,648)
Share-based compensation	6,715	7,352
Loss on disposal of fixed assets	2,165	0
Loss on sale of business	5,310	0
Gain on sale of discontinued operations	0	(1,188)
Gain (loss) on assets held for sale	(1,395)	4,409
Working capital changes:
Accounts receivable	22,671	19,407
Inventories	(24,829)	(24,689)
Prepaid expenses	(3,103)	(3,807)
Other current assets	(144)	(271)
Accounts payable	9,526	1,646
Accrued liabilities	(11,006)	(4,432)
U.S. and foreign income taxes	65	(7,947)
Long-term U.S. income taxes payable	38,640	0
Other liabilities	(2,934)	996
Other, net	5,639	6,357
Net Cash Provided (Used) by Operating Activities	89,718	91,343
Cash Flows Provided (Used) by Investing Activities
Purchase of capital assets	(27,720)	(29,077)
Proceeds from sale of capital assets	434	0
Proceeds from sale of business	47,814	600
Net Cash Provided (Used) by Investing Activities	20,528	(28,477)
Cash Flows Provided (Used) by Financing Activities
Proceeds provided by stock issuance under employee stock plans	2,270	16,795
Withholding taxes on restricted stock units vested	(366)	(1,072)
Shares repurchased	(43,450)	0
Repayment of long-term credit facilities	(50,000)	(70,000)
Repayment of long-term debt	(7,119)	(9,433)
Proceeds from issuance of long-term credit facilities	45,000	5,000
Net Cash Provided (Used) by Financing Activities	(53,665)	(58,710)
Effect of Foreign Exchange Rates on Cash and Cash Equivalents	3,547	(9,201)
Net Increase (Decrease) in Cash and Cash Equivalents	60,128	(5,045)
Cash and Cash Equivalents - Beginning of Year	307,826	258,520
Cash and Cash Equivalents - End of Period	367,954	253,475
Supplemental Cash Flow Information:
Cash paid for interest	14,126	14,384
Cash paid for taxes	$ 15,268	$ 25,323

Basis of Presentation

Basis of Presentation	6 Months Ended
	Mar. 30, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation	Note 1 – Basis of Presentation The consolidated balance sheet as of March 30, 2018, the consolidated statement of operations and comprehensive income (loss) for the three and six month periods ended March 30, 2018, and March 31, 2017, and the consolidated statement of cash flows for the six-month periods ended March 30, 2018, and March 31, 2017, are unaudited but, in the opinion of management, all of the necessary adjustments, consisting of normal recurring accruals, have been made to present fairly the financial statements referred to above in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, the above statements do not include all of the footnotes required for complete financial statements. The results of operations and cash flows for the interim periods presented are not necessarily indicative of results that can be expected for the full year. The notes to the consolidated financial statements in the Company’s Annual Report on Form 10-K/A for the fiscal year ended September 29, 2017, provide a summary of significant accounting policies and additional financial information that should be read in conjunction with this Form 10-Q. The timing of the Company’s revenues is impacted by the purchasing patterns of customers and, as a result, revenues are not generated evenly throughout the year. Moreover, the Company’s first fiscal quarter, October through December, includes significant holiday periods in both Europe and North America, resulting in fewer business days.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	6 Months Ended
	Mar. 30, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Recent Accounting Pronouncements	Note 2 – Recent Accounting Pronouncements In August 2017 the Financial Accounting Standards Board (“FASB”) amended its guidance on the financial reporting of hedging relationships. The new guidance eliminates the requirement to separately measure and report hedge ineffectiveness, expands permissible cash flow hedges on contractually specified components, and simplifies hedge documentation and effectiveness assessment. The guidance will be effective at the beginning of the Company’s first quarter of fiscal year 2020 and will require a modified retrospective approach on existing cash flow and net investment hedges. The presentation and disclosure requirements will be applied prospectively. The Company is currently evaluating the impact this guidance will have on the Company’s consolidated financial statements and the timing of adoption. In March 2017 the FASB issued new guidance on the presentation of the net periodic cost of postretirement benefit programs. The new standard requires sponsors of defined benefit postretirement plans to present the non-service cost components of net periodic benefit cost separate from the service cost component on the income statement. The new standard also requires that the non-service cost components of net periodic benefit cost no longer be capitalized within assets. The Company is evaluating the effects the standard will have on the Company’s consolidated financial statements and related disclosures beyond the change in income statement presentation. This new standard is effective for the Company in fiscal year 2019, with early adoption permitted. In January 2017 the FASB issued new guidance regarding the goodwill impairment test. The new guidance eliminates the Step 2 valuation test when evaluating goodwill for impairment. The new guidance requires that an entity performs its annual or interim goodwill test by comparing the fair value of the reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value. The loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. The guidance is effective for the Company in fiscal year 2021, with early adoption permitted. The standard was implemented in the first quarter of fiscal 2018. In October 2016 the FASB issued new guidance regarding income taxes. The new guidance will require the tax effects of intercompany transactions, other than sales of inventory, to be recognized currently, eliminating an exception under current Generally Accepted Accounting Principles (GAAP) in which the tax effects of intra-entity asset transfers are deferred until the transferred asset is sold to a third party or otherwise recovered through use. The Company is evaluating the effect the updated standard will have on the Company’s consolidated financial statements and related disclosures. The guidance will be effective for the Company in fiscal year 2019, with early adoption permitted. In August 2016 the FASB issued new guidance addressing how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The Company is evaluating the effect the updated standard will have on the Company’s consolidated financial statements and related disclosures. The guidance will be effective for the Company in fiscal year 2019, with early adoption permitted. In June 2016 the FASB issued a new standard on the measurement of credit losses, which will impact the Company’s measurement of trade receivables. The new standard replaces the current incurred loss model with a forward-looking expected loss model that is likely to result in earlier recognition of losses. The Company is evaluating the effect the updated standard will have on the Company’s consolidated financial statements and related disclosures. The new standard is effective for the Company in 2021, with early adoption permitted, but not earlier than 2020. In February 2016 the FASB issued a new lease accounting standard, which provides revised guidance on accounting for lease arrangements by both lessors and lessees. The central requirement of the new standard is that lessees must recognize lease-related assets and liabilities for all leases with a term longer than 12 months. The Company is evaluating the effect the standard will have on the Company’s consolidated financial statements and related disclosures. The new standard is effective for the Company in fiscal year 2020, with early adoption permitted. In July 2015 the FASB issued guidance which simplifies the subsequent measurement of inventory by requiring inventory to be measured at the lower of cost and net realizable value. Net realizable value is the estimated selling price of inventory in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. This new guidance was adopted in the first quarter of fiscal 2018, with no impact to the Company’s consolidated financial statements and related disclosures. Revenue Recognition In May 2014 the FASB issued a comprehensive new revenue recognition standard that effectively replaces all current guidance on the topic. The guidance permits the use of either a retrospective or a cumulative effect transition method. The Company has performed a review of the new guidance against the Company’s current accounting practices. The Company has reviewed a representative sample of contracts and other agreements with customers and evaluated the provisions contained within these agreements compared with the amended guidance. This amended guidance is expected to change the revenue recognition practices for a number of revenue streams across our businesses; the most significant will be for certain U.S. government contracts and certain other contracts that meet one or more of the mandatory criteria, which will move revenue recognition from a “point-in-time” basis to an “over-time” basis. The ongoing effect of recording revenue on an “over-time” basis is not expected to be materially different than under the historical guidance. The amended guidance is also expected to change the recognition of certain development costs that are contractually guaranteed for reimbursement by our customers. Contractually guaranteed reimbursements for development efforts are currently recognized as the development activities are performed. Under the amended guidance, the contractually guaranteed reimbursement specific to the development effort will be deferred as a contract liability and recognized as revenue when future products are delivered to the customer in cases where the Company does not transfer all intellectual property rights related to the development effort to the customer or does not have an enforceable right to payment for performance completed to date. The costs associated with development effort under an arrangement with contractually guaranteed reimbursement will also be deferred, up to the amount reimbursed, and recognized through cost of goods sold as products are delivered to the customer. The ongoing effect of deferring contractually guaranteed reimbursements and the related costs until products are delivered to the customer is not expected to be materially different than under the historical guidance. The new standard also significantly enhances required disclosures regarding revenue and related assets and liabilities. The Company is in the process of implementing changes to business processes, systems and internal controls required to adopt the new accounting standard. The updated standard becomes effective for the Company in the first quarter of fiscal 2019, with early adoption permitted. The Company expects to apply the standard using the cumulative effect transition basis, with a cumulative effect adjustment recognized at the beginning of fiscal year 2019.

Earnings Per Share and Sharehol

Earnings Per Share and Shareholders Equity	6 Months Ended
	Mar. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Share and Shareholders Equity	Note 3 – Earnings Per Share and Shareholders’ Equity Basic earnings per share is computed on the basis of the weighted average number of shares outstanding during the year. Diluted earnings per share includes the dilutive effect of stock options, restricted stock units and share units related to the Company’s performance share plan to the extent that performance share plan objectives are met. Common shares issuable from stock options excluded from the calculation of diluted earnings per shares because they were anti-dilutive were 970,625 in the three-month period ending March 30, 2018. Due to the net loss for the six months ending March 30, 2018, there was no impact from common shares issuable from stock options for diluted shares. Common shares issuable from stock options excluded from the calculation of diluted earnings per share because they were anti-dilutive were 740,575 and 775,225 in the three and six-month periods ending March 31, 2017, respectively. Shares used for calculating earnings per share are disclosed in the following table: In Thousands Three Months Ended Six Months Ended March 30, March 31, March 30, March 31, 2018 2017 2018 2017 Shares used for basic earnings per share 29,614 29,719 29,758 29,633 Shares used for diluted earnings per share 29,726 29,959 29,758 29,895 The authorized capital stock of the Company consists of 25,000 shares of preferred stock ($100 par value), 475,000 shares of serial preferred stock ($1.00 par value), each issuable in series, and 60,000,000 shares of common stock ($.20 par value). As of March 30, 2018, and September 29, 2017, there were no shares of preferred stock or serial preferred stock outstanding. In June 2014 the Company’s Board of Directors approved a $200 million share repurchase program. In March 2015 the Company’s Board of Directors approved an additional $200 million for the share repurchase program. Under the program, the Company is authorized to repurchase up to $400 million of outstanding shares of common stock from time to time, depending on market conditions, share price and other factors. Repurchases may be made in the open market or through private transactions, in accordance with SEC requirements. The Company may enter into a Rule 10(b)5-1 plan designed to facilitate the repurchase of all or a portion of the repurchase amount. The program does not require the Company to acquire a specific number of shares. Common stock repurchased can be reissued, and accordingly, the Company accounts for repurchased stock under the cost method of accounting. During the three months ended March 30, 2018, the Company repurchased 313,900 shares under this program at an average price paid per share of $73.29, for an aggregate purchase price of $23.0 million. During the six months ended March 30, 2018, the Company repurchased 601,400 shares under this program at an average price paid per share of $72.25, for an aggregate purchase price of $43.4 million. There were no shares repurchased during the three or six months ended March 31, 2017. There have been no shares repurchased subsequent to March 30, 2018. Since the program began, the Company has repurchased 3,737,327 shares for an aggregate purchase price of $352.0 million, with $48.0 million in shares remaining available for repurchase in the future. Changes in issued and outstanding common shares are summarized as follows: Six Months Ended Year Ended March 30, September 29, 2018 2017 Shares Issued: Balance, beginning of year 33,117,473 32,564,252 Shares issued under share-based compensation plans 46,888 553,221 Balance, end of current period 33,164,361 33,117,473 Treasury Stock: Balance, beginning of year (3,135,927 ) (3,135,927 ) Shares purchased (601,400 ) - Balance, end of current period (3,737,327 ) (3,135,927 ) Shares outstanding, end of period 29,427,034 29,981,546 The components of Accumulated Other Comprehensive Income (Loss): In Thousands March 30, September 29, 2018 2017 Unrealized gain on derivative contracts $ 6,096 $ 13,469 Tax effect (1,958 ) (3,892 ) 4,138 9,577 Pension and post-retirement obligations (79,921 ) (81,782 ) Tax effect 27,482 27,956 (52,439 ) (53,826 ) Foreign currency translation adjustment (204,442 ) (222,621 ) Accumulated other comprehensive income (loss) $ (252,743 ) $ (266,870 )

Retirement Benefits

Retirement Benefits	6 Months Ended
	Mar. 30, 2018
Compensation And Retirement Disclosure [Abstract]
Retirement Benefits	Note 4 – Retirement Benefits The Company’s pension plans principally include a U.S. pension plan maintained by Esterline and a non-U.S. plan maintained by CMC Electronics, Inc. (CMC). The Company also sponsors a number of other non-U.S. defined benefit pension plans, primarily in Belgium, France and Germany. Components of periodic pension cost consisted of the following: In Thousands Three Months Ended Six Months Ended March 30, March 31, March 30, March 31, 2018 2017 2018 2017 Components of Net Periodic Cost Service cost $ 3,396 $ 3,368 $ 6,769 $ 6,725 Interest cost 4,120 3,734 8,227 7,455 Expected return on plan assets (6,826 ) (6,290 ) (13,634 ) (12,555 ) Amortization of prior service cost 127 115 253 229 Amortization of actuarial (gain) loss 799 1,638 1,596 3,401 Net periodic cost (benefit) $ 1,616 $ 2,565 $ 3,211 $ 5,255 The Company amortizes prior service cost and actuarial gains and losses from accumulated other comprehensive income to expense over the remaining service period.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Mar. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 5 – Fair Value Measurements Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. A fair value hierarchy has been established that prioritizes the inputs to valuation techniques used to measure fair value. An asset’s or liability’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The hierarchy of fair value measurements is described below: Level 1 – Valuations are based on quoted prices that the Company has the ability to obtain in actively traded markets for identical assets and liabilities. Since valuations are based on quoted prices that are readily and regularly available in an active market or exchange traded market, a valuation of these instruments does not require a significant degree of judgment. Level 2 – Valuations are based on quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market. Level 3 – Valuations are based on model-based techniques for which some or all of the assumptions are not observable and therefore obtained from indirect market information that is significant to the overall fair value measurement and which require a significant degree of management judgment. The following table sets forth the Company’s financial assets and liabilities that were measured at fair value on a recurring basis by level within the fair value hierarchy at March 30, 2018, and September 29, 2017. In Thousands Level 2 March 30, September 29, 2018 2017 Assets: Derivative contracts designated as hedging instruments $ 8,473 $ 13,932 Derivative contracts not designated as hedging instruments 745 284 Embedded derivatives 1,118 746 Liabilities: Derivative contracts designated as hedging instruments $ 2,378 $ 464 Derivative contracts not designated as hedging instruments 874 2,440 Embedded derivatives 1,191 2,239 In Thousands Level 3 March 30, September 29, 2018 2017 Assets: Estimated value of assets held for sale $ 18,418 $ 19,835 Liabilities: Estimated value of liabilities held for sale $ 7,636 $ 8,908 The Company’s embedded derivatives are the result of entering into sales or purchase contracts that are denominated in a currency other than the Company’s functional currency or the supplier’s or customer’s functional currency. The fair value is determined by calculating the difference between quoted exchange rates at the time the contract was entered into and the period-end exchange rate. These contracts are categorized as Level 2 in the fair value hierarchy. The Company’s derivative contracts consist of foreign currency exchange contracts and, from time to time, interest rate swap agreements. These derivative contracts are over the counter, and their fair value is determined using modeling techniques that include market inputs such as interest rates, yield curves, and currency exchange rates. These contracts are categorized as Level 2 in the fair value hierarchy. The Company’s board of directors previously approved the plan to sell certain non-core business units. Based upon the estimated fair values, the Company adjusted the carrying value of the assets and liabilities of the businesses to fair value. Principal assumptions used in measuring the estimated value of assets and liabilities held for sale included estimated selling price of the discontinued business, discount rates, industry growth rates, and pricing of comparable transactions in the market. The valuations are categorized as Level 3 in the fair value hierarchy.

Derivative Financial Instrument

Derivative Financial Instruments	6 Months Ended
	Mar. 30, 2018
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Note 6 – Derivative Financial Instruments The Company uses derivative financial instruments in the form of foreign currency forward exchange contracts and interest rate swap contracts for the purpose of minimizing exposure to changes in foreign currency exchange rates on business transactions and interest rates, respectively. The Company’s policy is to execute such instruments with banks the Company believes to be creditworthy and not to enter into derivative financial instruments for speculative purposes. These derivative financial instruments do not subject the Company to undue risk, as gains and losses on these instruments generally offset gains and losses on the underlying assets, liabilities, or anticipated transactions that are being hedged. All derivative financial instruments are recorded at fair value in the Consolidated Balance Sheet. For a derivative that has not been designated as an accounting hedge, the change in the fair value is recognized immediately through earnings. For a derivative that has been designated as an accounting hedge of an existing asset or liability (a fair value hedge), the change in the fair value of both the derivative and underlying asset or liability is recognized immediately through earnings. For a derivative designated as an accounting hedge of an anticipated transaction (a cash flow hedge), the change in the fair value is recorded on the Consolidated Balance Sheet in Accumulated Other Comprehensive Income (AOCI) to the extent the derivative is effective in mitigating the exposure related to the anticipated transaction. The change in the fair value related to the ineffective portion of the hedge, if any, is immediately recognized in earnings. The amount recorded within AOCI is reclassified into earnings in the same period during which the underlying hedged transaction affects earnings. The fair value of derivative instruments is presented on a gross basis, as the Company does not have any derivative contracts which are subject to master netting arrangements. The Company did not have any hedges with credit-risk-related contingent features or that required the posting of collateral as of March 30, 2018, and September 29, 2017. The cash flows from derivative contracts are recorded in operating activities in the Consolidated Statement of Cash Flows. Foreign Currency Forward Exchange Contracts The Company transacts business in various foreign currencies, which subjects the Company’s cash flows and earnings to exposure related to changes in foreign currency exchange rates. These exposures arise primarily from purchases or sales of products and services from third parties. Foreign currency forward exchange contracts provide for the purchase or sale of foreign currencies at specified future dates at specified exchange rates, and are used to offset changes in the fair value of certain assets or liabilities or forecasted cash flows resulting from transactions denominated in foreign currencies. At March 30, 2018, and September 29, 2017, the Company had outstanding foreign currency forward exchange contracts principally to sell U.S. dollars with notional amounts of $476.8 million and $406.9 million, respectively. The notional value of our foreign currency forward contracts includes $100.0 million related to the hedge of a portion of our net monetary assets, including the embedded derivatives in our backlog. These notional values consist primarily of contracts for the British pound sterling, Canadian dollar, and European euro and are stated in U.S. dollar equivalents at spot exchange rates at the respective dates. Interest Rate Swaps The Company manages its exposure to interest rate risk by maintaining an appropriate mix of fixed and variable rate debt, which over time are expected to moderate the costs of debt financing. When considered necessary, the Company may use financial instruments in the form of interest rate swaps to help meet this objective. Embedded Derivative Instruments The Company’s embedded derivatives are the result of entering into sales or purchase contracts that are denominated in a currency other than the Company’s functional currency or the supplier’s or customer’s functional currency. Net Investment Hedge In April 2015 the Company issued €330.0 million in 3.625% Senior Notes due April 2023 (2023 Notes) which require semi-annual interest payments in April and October each year until maturity. The Company designated the 2023 Notes and accrued interest as a hedge of the investment of certain foreign business units. The foreign currency gain or loss that is effective as a hedge is reported as a component of AOCI in shareholders’ equity. To the extent that this hedge is ineffective, the foreign currency gain or loss is recorded in earnings. There has been no ineffectiveness of the hedge since inception. Fair Value of Derivative Instruments Fair value of derivative instruments in the Consolidated Balance Sheet at March 30, 2018, and September 29, 2017, consisted of: In Thousands Fair Value March 30, September 29, Classification 2018 2017 Foreign Currency Forward Exchange Contracts: Other current assets $ 8,413 $ 11,433 Other assets 805 2,783 Accrued liabilities 1,928 2,506 Other liabilities 1,324 398 Embedded Derivative Instruments: Other current assets $ 792 $ 604 Other assets 326 142 Accrued liabilities 872 1,657 Other liabilities 319 582 The effect of derivative instruments on the Consolidated Statement of Operations and Comprehensive Income (Loss) for the three month and six month periods ended March 30, 2018, and March 31, 2017, consisted of: Fair Value Hedges and Embedded Derivatives The Company recognized the following gains (losses) on contracts designated as fair value hedges and embedded derivatives: In Thousands Three Months Ended Six Months Ended Gain (Loss) March 30, March 31, March 30, March 31, 2018 2017 2018 2017 Fair Value Hedges: Recognized in cost of sales $ (893 ) $ 692 $ (1,271 ) $ (241 ) Recognized in selling, general & administrative (691 ) 561 (1,014 ) (207 ) Embedded derivatives: Recognized in sales $ 386 $ (518 ) $ 706 $ (265 ) Cash Flow Hedges The Company recognized the following gains (losses) on contracts designated as cash flow hedges: In Thousands Three Months Ended Six Months Ended Gain (Loss) March 30, March 31, March 30, March 31, 2018 2017 2018 2017 Foreign currency forward exchange contracts: Recognized in AOCI (effective portion) $ (11,797 ) $ 9,355 $ (14,291 ) $ 6,939 Reclassified from AOCI into sales 4,984 (3,446 ) 6,918 (7,871 ) Net Investment Hedges The Company recognized the following gains (losses) on contracts designated as net investment hedges: In Thousands Three Months Ended Six Months Ended Gain (Loss) March 30, March 31, March 30, March 31, 2018 2017 2018 2017 2023 Notes and Accrued Interest: Recognized in AOCI $ (10,682 ) $ (4,534 ) $ (16,979 ) $ 19,379 During the second quarter of fiscal 2018 and 2017, the Company recorded gains of $2.3 million and $1.1 million, respectively, on foreign currency forward exchange contracts that have not been designated as accounting hedges. During the first six months of fiscal 2018 and 2017, the Company recorded gains of $2.4 million and $0.2 million, respectively, on foreign currency forward exchange contracts that have not been designated as accounting hedges. These foreign currency exchange gains and losses are included in selling, general and administrative expense. There was no significant impact to the Company’s earnings related to the ineffective portion of any hedging instruments during the first six months of fiscal 2018 and 2017. In addition, there was no significant impact to the Company’s earnings when a hedged firm commitment no longer qualified as a fair value hedge or when a hedged forecasted transaction no longer qualified as a cash flow hedge during the first six months of fiscal 2018 and 2017. Amounts included in AOCI are reclassified into earnings when the hedged transaction settles. The Company expects to reclassify approximately $7.0 million of net gain into earnings over the next 12 months. The maximum duration of the Company’s foreign currency cash flow hedge contracts at March 30, 2018, was 24 months.

Insurance Recovery

Insurance Recovery	6 Months Ended
	Mar. 30, 2018
Insurance [Abstract]
Insurance Recovery	Note 7 – Insurance Recovery In the second quarter of fiscal 2017 the Company received a $5.2 million insurance recovery due to an energetic incident at one of its countermeasure operations, which occurred in the third quarter of fiscal 2016. The insurance recovery from this incident was $7.8 million for the first six months of 2017. Management does not anticipate additional insurance recoveries arising from this matter in fiscal 2018. The insurance recovery is reported as a separate line item on the Consolidated Statement of Operations and Comprehensive Income (Loss) and is included in Advanced Materials segment earnings.

License Fee Income

License Fee Income	6 Months Ended
	Mar. 30, 2018
Revenues [Abstract]
License Fee Income	Note 8 – License Fee Income On January 4, 2018, the Company granted an exclusive license to a third party to manufacture, repair and sell certain legacy avionics components for $4.5 million. In addition, the Company sold $0.4 million in inventory. The Company will be paid a 15% royalty on future sales of the licensed product. The Company recorded $2.3 million in license fee income, net of the write-off of the related intangible assets of $2.2 million. On December 22, 2017, the Company granted an exclusive license to a third party to manufacture, repair and sell certain legacy control devices for $3.0 million. Additionally, the Company sold certain inventory and manufacturing equipment to the licensee for $1.0 million. The Company will be paid a 15% royalty on future sales of the licensed product. The license fee income is reported as a separate line item on the Consolidated Statement of Operations and Comprehensive Income (Loss) and is included in Avionics & Controls segment earnings.

Sale of Business

Sale of Business	6 Months Ended
	Mar. 30, 2018
Gain Loss On Disposition Of Assets [Abstract]
Sale of Business	Note 9 – Sale of Business In March 2018 the Board of Directors approved the sale of the Kirkhill business, and on March 15, 2018, the Company sold the assets and certain liabilities of this business to TransDigm, Inc. for $50 million before selling costs. The Company incurred an estimated $5.3 million loss on sale of the business and an estimated $0.7 million gain after tax due to the release of a valuation allowance on a capital loss carryover. Based on current discontinued operations accounting guidance, the sale of the Kirkhill business does not qualify as a discontinued operation.

Income Taxes

Income Taxes	6 Months Ended
	Mar. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Note 10 – Income Taxes The Tax Cuts and Jobs Act (the Act) was enacted on December 22, 2017. The Act reduces the U.S. federal corporate tax rate from 35% to 21%, requires companies to pay a one-time transition tax on earnings of certain foreign subsidiaries that were previously tax deferred, and creates new taxes on certain foreign sourced earnings. The SEC recognized that a company’s review of certain income tax effects of the Act may be incomplete at the time financial statements are issued. According to FASB Accounting Standards Update No. 2018-05, if a company does not have the necessary information available for certain effects of the Act, the Company may record provisional numbers and adjust those amounts during the measurement period not to extend beyond one year. At March 30, 2018, the Company had not completed the accounting for the tax effects of enactment of the Act; however, in certain cases, as described below, the Company made a reasonable estimate of the effects on its existing deferred tax balances and the one-time transition tax. In other cases, the Company was not able to make a reasonable estimate and continued to account for those items based on its existing accounting under ASC 740, Income Taxes, and the provisions of the tax laws that were in effect immediately prior to enactment. For the items for which the Company was able to determine a reasonable estimate, the Company recognized a provisional amount of $48.6 million, which is included as a component of income tax expense from continuing operations. In all cases, the Company will continue to make and refine the calculations as additional analysis is completed. In addition, the estimates may also be affected as the Company gains a more thorough understanding of the tax law. Provisional Amounts U.S. Deferred Tax Assets and Liabilities The Company remeasured certain deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future, which is generally 21%. However, the Company is still analyzing certain aspects of the Act and refining its calculations, including evaluation of limits on employee remuneration, which could affect the measurement of these balances or potentially give rise to new deferred tax amounts. The provisional amount recorded related to the remeasurement of the deferred tax balance was $6.6 million. Foreign Tax Effects The one-time transition tax is based on the Company’s total post-1986 earnings and profits (E&P) that the Company previously deferred from U.S. income taxes. The Company recorded a provisional amount for its one-time transition tax liability resulting in an increase in income tax expense of $42.0 million. The Company is still analyzing certain aspects of the Act and refining its calculations, which could potentially affect the measurement of these amounts, including the benefit attributable to foreign tax credits and related elections. Further, the transition tax is based in part on the amount of those earnings held in cash and other specified assets. This amount may change when the Company finalizes the calculations of post-1986 foreign E&P previously deferred from U.S. taxation and finalizes the amounts of cash or other specified assets. The Act sets certain limits that may restrict the Company’s use of any foreign tax credits generated from the one-time transaction tax. As of the date of this report, management was not able to (1) determine a reasonable estimate of the tax liability for the Company’s remaining outside basis; (2) complete an analysis of the Global Intangible Low Taxed Income (GILTI); and (3) evaluate how the Act will impact the Company’s existing APB 23 position to indefinitely reinvest unremitted foreign earnings. The income tax rate for the second quarter of fiscal 2018 was 7.9% compared to the prior year period of 27.2%. The 7.9% income tax rate mainly reflected a $4.7 million tax benefit from a reduction of a capital loss valuation reserve due to the realization of a capital gain upon the sale of the Kirkhill business. In addition, the income tax rate for the second fiscal quarter of 2018 reflects a blended U.S. tax rate of 24.5%, which is based upon an income tax rate of 35% for our first three months of fiscal 2018 and 21% for the balance of year ending September 28, 2018. The income tax rate for the first six months of fiscal 2018 was 122.7% mainly due to the effect of the Act. In addition, the income tax rate for the first six months of fiscal 2018 reflected a $4.7 million tax benefit from a release of a capital loss valuation reserve due to a realized capital gain upon the sale of the Kirkhill business. The 18.3% income tax rate in the first six months of fiscal 2017 reflected the following items: the Company recognized $5.4 million of discrete tax benefits primarily related to a reduction of the income tax rate in France for fiscal 2020 and the early adoption of the accounting standard update for employee share-based payment awards. By the end of fiscal 2018, it is reasonably possible that approximately $1.0 million of tax benefits that are currently unrecognized could be recognized as a result of settlement of examinations and/or the expiration of applicable statutes of limitations. The Company recognizes interest related to unrecognized tax benefits in income tax expense.

Debt

Debt	6 Months Ended
	Mar. 30, 2018
Debt Disclosure [Abstract]
Debt	Note 11 – Debt Long-term debt at March 30, 2018 and September 29, 2017, consisted of the following: In Thousands March 30, September 29, 2018 2017 U.S. credit facility $ 45,000 $ 50,000 U.S. Term Loan, due April 2020 218,750 225,000 3.625% Senior Notes, due April 2023 406,692 389,862 Government refundable advances 44,590 45,549 Obligation under capital leases 70,378 71,091 Debt issuance costs (4,158 ) (4,654 ) 781,252 776,848 Less current maturities 15,170 17,424 Carrying amount of long-term debt $ 766,082 $ 759,424 U.S. Credit Facility On April 9, 2015, the Company amended its secured credit facility to extend the maturity to April 9, 2020, increase the revolving credit facility to $500 million, and provide for a delayed-draw term loan facility of $250 million, which was drawn on August 3, 2015. The Company recorded $2.3 million in debt issuance costs. The credit facility is secured by substantially all the Company’s assets, and interest is based on standard inter-bank offering rates. The interest rate ranges from LIBOR plus 1.25% to LIBOR plus 2.00% depending on leverage ratios at the time the funds are drawn. At March 30, 2018, the Company had $45.0 million outstanding under the secured credit facility at an interest rate of LIBOR plus 1.50%, which was 3.38%. On February 13, 2018, the Company obtained a waiver and consent from the required lenders under the Company’s U.S. credit facilities of the financial reporting breaches resulting from the Restatement described in Note 2 of Company’s fiscal 2017 Form 10-K/A. As of March 30, 2018, the Company is in compliance with the lenders’ requirements. U.S. Term Loan, due April 2020 On August 3, 2015, the Company borrowed $250 million under the amended secured credit facility (U.S. Term Loan, due 2020). The interest rate on the U.S. Term Loan, due 2020, ranges from LIBOR plus 1.25% to LIBOR plus 2.00%. At March 30, 2018, the interest rate was LIBOR plus 1.50%, or 3.38%. The loan amortizes at 1.25% of the original principal balance quarterly through March 2020, with the remaining balance due in April 2020. 3.625% Senior Notes, due April 2023 In April 2015 TA Mfg. Limited, a wholly owned subsidiary of the Company, issued €330.0 million in 3.625% Notes, due 2023, requiring semi-annual interest payments in April and October of each year until maturity. The notes are designated as a net investment hedge and translated to U.S. dollars each period, with the associated gains or losses recorded to AOCI. The net proceeds from the sale of the notes, after deducting $5.9 million of debt issuance costs, were $350.8 million. The 2023 Notes are general unsecured senior obligations of the Company. The 2023 Notes are unconditionally guaranteed on a senior basis by the Company and certain subsidiaries of the Company that are guarantors under the Company’s existing secured credit facility. The 2023 Notes are subject to redemption at the option of the Company, in whole or in part at redemption prices starting at 102.719% of the principal amount plus accrued interest during the period beginning April 15, 2018, and declining annually to 100% of principal and accrued interest on or after April 15, 2021. Based on quoted market prices, the fair value of the Company’s 2023 Notes was $414.3 million and $403.2 million as of March 30, 2018, and September 29, 2017, respectively. The carrying amount of the secured credit facility and the U.S. Term Loan, due 2020, approximate fair value. The estimate of fair value for the 2023 Notes is based on Level 2 inputs as defined in the fair value hierarchy described in Note 5. Government Refundable Advances Government refundable advances consist of payments received from the Canadian government to assist in research and development related to commercial aviation. The requirement to repay this advance is solely based on year-over-year commercial aviation revenue growth at CMC beginning in 2014. Imputed interest on the advance was 2.52% at March 30, 2018. The debt recognized was $44.6 million and $45.5 million at March 30, 2018, and September 29, 2017, respectively. Obligation Under Capital Lease The Company leases building and equipment under capital leases. The present value of the minimum capital lease payments, net of the current portion, totaled $68.3 million and $69.0 million as of March 30, 2018, and September 29, 2017, respectively.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Mar. 30, 2018
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 12 – Commitments and Contingencies The Company is party to various lawsuits and claims, both as a plaintiff and defendant, and has contingent liabilities arising from the conduct of business, none of which, in the opinion of management, is expected to have a material effect on the Company’s financial position or results of operations. The Company believes that it has made appropriate and adequate provisions for contingent liabilities. On March 5, 2014, the Company entered into a Consent Agreement with the U.S. Department of State’s Directorate of Defense Trade Controls Office of Defense Trade Controls Compliance (DTCC) to resolve alleged International Traffic in Arms Regulations (ITAR) civil violations. The Consent Agreement was closed in fiscal 2017.

Employee Stock Plans

Employee Stock Plans	6 Months Ended
	Mar. 30, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Employee Stock Plans	Note 13 – Employee Stock Plans As of March 30, 2018, the Company had three share-based compensation plans, which are described below. The compensation cost that has been charged against income for those plans was $6.7 million and $7.4 million for the first six months of fiscal 2018 and 2017, respectively. During the first six months of fiscal 2018 and 2017, the Company issued 46,888 and 345,484 shares, respectively, under its share-based compensation plans. Employee Stock Purchase Plan (ESPP) The ESPP is a “safe-harbor” designed plan whereby shares are purchased by participants at a discount of 5% of the market value on the purchase date and, therefore, compensation cost is not recorded. Employee Sharesave Scheme The Company offers shares under its employee sharesave scheme for U.K. employees. This plan allows participants the option to purchase shares at a 5% discount of the market price of the stock as of the beginning of the offering period. The term of these options is three years. The sharesave scheme is not a “safe-harbor” design, and therefore, compensation cost is recognized on this plan. Under the sharesave scheme, option exercise prices are equal to the fair market value of the Company’s common stock on the date of grant. There were no grants in the six-month periods ended March 30, 2018, and March 31, 2017. Equity Incentive Plan Under the equity incentive plan, option exercise prices are equal to the fair market value of the Company’s common stock on the date of grant. The Company granted 218,800 and 234,700 options to purchase shares in the six-month periods ended March 30, 2018, and March 31, 2017, respectively. The weighted-average grant date fair value of options granted during the six-month periods ended March 30, 2018, and March 31, 2017, was $30.85 and $32.60 per share, respectively. The fair value of each option granted by the Company was estimated using a Black-Scholes pricing model, which uses the assumptions noted in the following table. The Company uses historical data to estimate volatility of the Company’s common stock and option exercise and employee termination assumptions. The risk-free rate for the contractual life of the option is based on the U.S. Treasury zero coupon issues in effect at the time of the grant. Six Months Ended March 30, March 31, 2018 2017 Volatility 34.32% 34.97 - 35.42% Risk-free interest rate 2.15 - 2.47% 1.98 - 2.51% Expected life (years) 5 - 9 5 - 9 Dividends 0 0 The Company granted 42,050 and 37,100 restricted stock units in the six-month periods ended March 30, 2018, and March 31, 2017, respectively. The weighted-average grant date fair value of restricted stock units granted during the six-month periods ended March 30, 2018, and March 31, 2017, was $87.34 and $76.83 per share, respectively. The fair value of each restricted stock unit granted by the Company is equal to the fair market value of the Company’s common stock on the date of grant. The Company granted 33,700 and 42,600 performance share plan (PSP) shares in the six-month periods ended March 30, 2018, and March 31, 2017, respectively. PSP shares will be paid out in shares of Esterline common stock at the end of the three-year performance period. The PSP shares granted in each period equaled the number of shares participants would receive if the Company achieves target performance over the relevant period. The actual number of shares that will be paid out upon completion of the performance period is based on actual performance and may range from 0% to 300% of the target number of shares.

Discontinued Operations

Discontinued Operations	6 Months Ended
	Mar. 30, 2018
Discontinued Operations And Disposal Groups [Abstract]
Discontinued Operations	Note 14 – Discontinued Operations The Company’s Board of Directors previously approved the plan to sell certain non-core business units including Wallop Defence Systems, Ltd. (Wallop), a manufacturer of flare countermeasure devices; a small distribution business; and a small manufacturing business. On May 4, 2016, the Company sold certain assets of Wallop for 2.5 million British pounds and deferred consideration up to a maximum payment of 9 million British pounds. In the definitive purchase and sale agreement for the sale of these assets, the Company provided standard representations and warranties as well as indemnification to the buyer of the Wallop operation. The Company is obligated to indemnify the buyer for certain losses of up to 5.0 million British pounds, if, among other things, the Company breaches the representations and warranties. In the first quarter of fiscal 2018, the Company received notification of a claim from the buyer of the Wallop operation alleging breaches of representations and warranties primarily associated with defective products and late product deliveries. Although a loss is possible, the amount of any loss related to this claim cannot be estimated at this time. The Company does not expect the possible loss to have a material effect on the Company’s financial position. The deferred consideration is payable based upon receipt of acceptable orders during a three-year period ending May 3, 2019, and is equal to the amount of the acceptable order times a specified percentage ranging from 26.5% to 31%. The earn-out payment is estimated to be 4.8 million British pounds, or $6.7 million, at March 30, 2018. The Company was notified in December 2017 that it earned 1.3 million British pounds, or $1.8 million, in deferred consideration , On March 28, 2017, the Company sold a small manufacturing business for $0.6 million and a note receivable of $2.4 million, resulting in a gain on sale of the business of $0.8 million. The note receivable is due March 28, 2021, with an interest rate of 2.05%. The Company incurred a $0.1 million loss from discontinued operations in the second quarter of fiscal 2018 and no loss from discontinued operations in the second quarter of fiscal 2017. During the first six months of fiscal 2018 and 2017, the company incurred a loss from discontinued operations of $0.2 million and $5.4 million, respectively. Included in the loss of $5.4 million for the first six months of fiscal 2017 was a $4.3 million loss on Wallop assets held for sale, principally due to a reduction in the estimated sale price and the effect of changes of foreign currency exchange rates. There was no significant change to the estimated sale price in the second quarter of fiscal 2018. The operating results of the discontinued operations for the three-month period ended March 30, 2018, consisted of the following: In Thousands Avionics & Sensors & Advanced Controls Systems Materials Other Total Net Sales $ - $ - $ - $ - $ - Operating earnings (loss) 869 - (1,207 ) (50 ) (388 ) Tax expense (benefit) 10 - (308 ) (13 ) (311 ) Income (loss) from discontinued operations $ 859 $ - $ (899 ) $ (37 ) $ (77 ) Included in Operating Earnings (Loss): Gain (loss) on net assets held for sale $ 801 $ - $ 505 $ - $ 1,306 The operating results of the discontinued operations for the three-month period ended March 31, 2017, consisted of the following: In Thousands Avionics & Sensors & Advanced Controls Systems Materials Other Total Net Sales $ 2,268 $ - $ - $ - $ 2,268 Operating earnings (loss) 752 (2 ) (1,269 ) (289 ) (808 ) Tax expense (benefit) (191 ) - (482 ) (101 ) (774 ) Income (loss) from discontinued operations $ 943 $ (2 ) $ (787 ) $ (188 ) $ (34 ) Included in Operating Earnings (Loss): Gain (loss) on net assets held for sale $ 54 $ - $ 265 $ - $ 319 Gain on sale of discontinued operations 1,188 - - - 1,188 The operating results of the discontinued operations for the six-month period ended March 30, 2018, consisted of the following: In Thousands Avionics & Sensors & Advanced Controls Systems Materials Other Total Net Sales $ - $ - $ - $ - $ - Operating earnings (loss) 883 - (1,490 ) (50 ) (657 ) Tax expense (benefit) 33 - (434 ) (13 ) (414 ) Income (loss) from discontinued operations $ 850 $ - $ (1,056 ) $ (37 ) $ (243 ) Included in Operating Earnings (Loss): Gain (loss) on net assets held for sale $ 750 $ - $ 645 $ - $ 1,395 The operating results of the discontinued operations for the six-month period ended March 31, 2017, consisted of the following: In Thousands Avionics & Sensors & Advanced Controls Systems Materials Other Total Net Sales $ 4,964 $ - $ - $ - $ 4,964 Operating earnings (loss) (119 ) 893 (6,616 ) (893 ) (6,735 ) Tax expense (benefit) (430 ) - (623 ) (312 ) (1,365 ) Income (loss) from discontinued operations $ 311 $ 893 $ (5,993 ) $ (581 ) $ (5,370 ) Included in Operating Earnings (Loss): Gain (loss) on net assets held for sale $ (86 ) $ - $ (4,323 ) $ - $ (4,409 ) Gain on sale of discontinued operations 1,188 - - - 1,188 Assets and Liabilities Held for Sale within the Consolidated Balance Sheet at March 30, 2018, are comprised of the following: In Thousands Avionics & Sensors & Advanced Controls Systems Materials Total Other current assets $ - $ - $ 4,300 $ 4,300 Current Assets of Businesses Held for Sale - - 4,300 4,300 Net property, plant and equipment 5,262 - - 5,262 Other assets - - 8,856 8,856 Non-Current Assets of Businesses Held for Sale 5,262 - 8,856 14,118 Accounts payable - - 30 30 Accrued liabilities - - 4,499 4,499 Current Liabilities of Businesses Held for Sale - - 4,529 4,529 Deferred income tax liabilities - - 2,787 2,787 Other liabilities - - 320 320 Non-Current Liabilities of Businesses Held for Sale - - 3,107 3,107 Net Assets of Businesses Held for Sale $ 5,262 $ - $ 5,520 $ 10,782 Assets and Liabilities Held for Sale within the Consolidated Balance Sheet at September 29, 2017, were comprised of the following: In Thousands Avionics & Sensors & Advanced Controls Systems Materials Total Other current assets $ - $ - $ 6,501 $ 6,501 Current Assets of Businesses Held for Sale - - 6,501 6,501 Net property, plant and equipment 5,262 - - 5,262 Other assets - - 8,072 8,072 Non-Current Assets of Businesses Held for Sale 5,262 - 8,072 13,334 Accounts payable - - 138 138 Accrued liabilities - - 7,046 7,046 Current Liabilities of Businesses Held for Sale - - 7,184 7,184 Deferred income tax liabilities - - 1,404 1,404 Other liabilities - - 320 320 Non-Current Liabilities of Businesses Held for Sale - - 1,724 1,724 Net Assets of Businesses Held for Sale $ 5,262 $ - $ 5,665 $ 10,927

Business Segment Information

Business Segment Information	6 Months Ended
	Mar. 30, 2018
Segment Reporting [Abstract]
Business Segment Information	Note 15 – Business Segment Information Business segment information for continuing operations includes the segments of Avionics & Controls, Sensors & Systems and Advanced Materials. In Thousands Three Months Ended Six Months Ended March 30, March 31, March 30, March 31, 2018 2017 2018 2017 Sales Avionics & Controls $ 212,814 $ 213,293 $ 415,517 $ 405,975 Sensors & Systems 198,153 182,727 373,621 350,483 Advanced Materials 106,662 113,111 210,536 211,089 $ 517,629 $ 509,131 $ 999,674 $ 967,547 Earnings from Continuing Operations Before Income Taxes Avionics & Controls $ 23,673 $ 20,772 $ 44,058 $ 38,689 Sensors & Systems 19,271 26,357 30,984 44,500 Advanced Materials 9,553 28,322 24,136 38,202 Segment Earnings 52,497 75,451 99,178 121,391 Corporate expense (18,573 ) (20,021 ) (38,621 ) (37,265 ) Interest income 449 100 747 196 Interest expense (8,167 ) (7,458 ) (15,771 ) (15,346 ) $ 26,206 $ 48,072 $ 45,533 $ 68,976

Recent Accounting Pronounceme21

Recent Accounting Pronouncements (Policies)	6 Months Ended
	Mar. 30, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Recent Accounting Pronouncements	In August 2017 the Financial Accounting Standards Board (“FASB”) amended its guidance on the financial reporting of hedging relationships. The new guidance eliminates the requirement to separately measure and report hedge ineffectiveness, expands permissible cash flow hedges on contractually specified components, and simplifies hedge documentation and effectiveness assessment. The guidance will be effective at the beginning of the Company’s first quarter of fiscal year 2020 and will require a modified retrospective approach on existing cash flow and net investment hedges. The presentation and disclosure requirements will be applied prospectively. The Company is currently evaluating the impact this guidance will have on the Company’s consolidated financial statements and the timing of adoption. In March 2017 the FASB issued new guidance on the presentation of the net periodic cost of postretirement benefit programs. The new standard requires sponsors of defined benefit postretirement plans to present the non-service cost components of net periodic benefit cost separate from the service cost component on the income statement. The new standard also requires that the non-service cost components of net periodic benefit cost no longer be capitalized within assets. The Company is evaluating the effects the standard will have on the Company’s consolidated financial statements and related disclosures beyond the change in income statement presentation. This new standard is effective for the Company in fiscal year 2019, with early adoption permitted. In January 2017 the FASB issued new guidance regarding the goodwill impairment test. The new guidance eliminates the Step 2 valuation test when evaluating goodwill for impairment. The new guidance requires that an entity performs its annual or interim goodwill test by comparing the fair value of the reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value. The loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. The guidance is effective for the Company in fiscal year 2021, with early adoption permitted. The standard was implemented in the first quarter of fiscal 2018. In October 2016 the FASB issued new guidance regarding income taxes. The new guidance will require the tax effects of intercompany transactions, other than sales of inventory, to be recognized currently, eliminating an exception under current Generally Accepted Accounting Principles (GAAP) in which the tax effects of intra-entity asset transfers are deferred until the transferred asset is sold to a third party or otherwise recovered through use. The Company is evaluating the effect the updated standard will have on the Company’s consolidated financial statements and related disclosures. The guidance will be effective for the Company in fiscal year 2019, with early adoption permitted. In August 2016 the FASB issued new guidance addressing how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The Company is evaluating the effect the updated standard will have on the Company’s consolidated financial statements and related disclosures. The guidance will be effective for the Company in fiscal year 2019, with early adoption permitted. In June 2016 the FASB issued a new standard on the measurement of credit losses, which will impact the Company’s measurement of trade receivables. The new standard replaces the current incurred loss model with a forward-looking expected loss model that is likely to result in earlier recognition of losses. The Company is evaluating the effect the updated standard will have on the Company’s consolidated financial statements and related disclosures. The new standard is effective for the Company in 2021, with early adoption permitted, but not earlier than 2020. In February 2016 the FASB issued a new lease accounting standard, which provides revised guidance on accounting for lease arrangements by both lessors and lessees. The central requirement of the new standard is that lessees must recognize lease-related assets and liabilities for all leases with a term longer than 12 months. The Company is evaluating the effect the standard will have on the Company’s consolidated financial statements and related disclosures. The new standard is effective for the Company in fiscal year 2020, with early adoption permitted. In July 2015 the FASB issued guidance which simplifies the subsequent measurement of inventory by requiring inventory to be measured at the lower of cost and net realizable value. Net realizable value is the estimated selling price of inventory in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. This new guidance was adopted in the first quarter of fiscal 2018, with no impact to the Company’s consolidated financial statements and related disclosures. Revenue Recognition In May 2014 the FASB issued a comprehensive new revenue recognition standard that effectively replaces all current guidance on the topic. The guidance permits the use of either a retrospective or a cumulative effect transition method. The Company has performed a review of the new guidance against the Company’s current accounting practices. The Company has reviewed a representative sample of contracts and other agreements with customers and evaluated the provisions contained within these agreements compared with the amended guidance. This amended guidance is expected to change the revenue recognition practices for a number of revenue streams across our businesses; the most significant will be for certain U.S. government contracts and certain other contracts that meet one or more of the mandatory criteria, which will move revenue recognition from a “point-in-time” basis to an “over-time” basis. The ongoing effect of recording revenue on an “over-time” basis is not expected to be materially different than under the historical guidance. The amended guidance is also expected to change the recognition of certain development costs that are contractually guaranteed for reimbursement by our customers. Contractually guaranteed reimbursements for development efforts are currently recognized as the development activities are performed. Under the amended guidance, the contractually guaranteed reimbursement specific to the development effort will be deferred as a contract liability and recognized as revenue when future products are delivered to the customer in cases where the Company does not transfer all intellectual property rights related to the development effort to the customer or does not have an enforceable right to payment for performance completed to date. The costs associated with development effort under an arrangement with contractually guaranteed reimbursement will also be deferred, up to the amount reimbursed, and recognized through cost of goods sold as products are delivered to the customer. The ongoing effect of deferring contractually guaranteed reimbursements and the related costs until products are delivered to the customer is not expected to be materially different than under the historical guidance. The new standard also significantly enhances required disclosures regarding revenue and related assets and liabilities. The Company is in the process of implementing changes to business processes, systems and internal controls required to adopt the new accounting standard. The updated standard becomes effective for the Company in the first quarter of fiscal 2019, with early adoption permitted. The Company expects to apply the standard using the cumulative effect transition basis, with a cumulative effect adjustment recognized at the beginning of fiscal year 2019.

Earnings Per Share and Shareh22

Earnings Per Share and Shareholders Equity (Tables)	6 Months Ended
	Mar. 30, 2018
Earnings Per Share [Abstract]
Shares Used for Calculating Earnings Per Share	Shares used for calculating earnings per share are disclosed in the following table: In Thousands Three Months Ended Six Months Ended March 30, March 31, March 30, March 31, 2018 2017 2018 2017 Shares used for basic earnings per share 29,614 29,719 29,758 29,633 Shares used for diluted earnings per share 29,726 29,959 29,758 29,895
Schedule of Changes in Issued and Outstanding Common Shares and Treasury Stock	Changes in issued and outstanding common shares are summarized as follows: Six Months Ended Year Ended March 30, September 29, 2018 2017 Shares Issued: Balance, beginning of year 33,117,473 32,564,252 Shares issued under share-based compensation plans 46,888 553,221 Balance, end of current period 33,164,361 33,117,473 Treasury Stock: Balance, beginning of year (3,135,927 ) (3,135,927 ) Shares purchased (601,400 ) - Balance, end of current period (3,737,327 ) (3,135,927 ) Shares outstanding, end of period 29,427,034 29,981,546
Schedule of Components of Accumulated Other Comprehensive Income (Loss)	The components of Accumulated Other Comprehensive Income (Loss): In Thousands March 30, September 29, 2018 2017 Unrealized gain on derivative contracts $ 6,096 $ 13,469 Tax effect (1,958 ) (3,892 ) 4,138 9,577 Pension and post-retirement obligations (79,921 ) (81,782 ) Tax effect 27,482 27,956 (52,439 ) (53,826 ) Foreign currency translation adjustment (204,442 ) (222,621 ) Accumulated other comprehensive income (loss) $ (252,743 ) $ (266,870 )

Retirement Benefits (Tables)

Retirement Benefits (Tables)	6 Months Ended
	Mar. 30, 2018
Compensation And Retirement Disclosure [Abstract]
Schedule of Net Periodic Pension Cost	The Company’s pension plans principally include a U.S. pension plan maintained by Esterline and a non-U.S. plan maintained by CMC Electronics, Inc. (CMC). The Company also sponsors a number of other non-U.S. defined benefit pension plans, primarily in Belgium, France and Germany. Components of periodic pension cost consisted of the following: In Thousands Three Months Ended Six Months Ended March 30, March 31, March 30, March 31, 2018 2017 2018 2017 Components of Net Periodic Cost Service cost $ 3,396 $ 3,368 $ 6,769 $ 6,725 Interest cost 4,120 3,734 8,227 7,455 Expected return on plan assets (6,826 ) (6,290 ) (13,634 ) (12,555 ) Amortization of prior service cost 127 115 253 229 Amortization of actuarial (gain) loss 799 1,638 1,596 3,401 Net periodic cost (benefit) $ 1,616 $ 2,565 $ 3,211 $ 5,255

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Mar. 30, 2018
Fair Value Disclosures [Abstract]
Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis	The following table sets forth the Company’s financial assets and liabilities that were measured at fair value on a recurring basis by level within the fair value hierarchy at March 30, 2018, and September 29, 2017. In Thousands Level 2 March 30, September 29, 2018 2017 Assets: Derivative contracts designated as hedging instruments $ 8,473 $ 13,932 Derivative contracts not designated as hedging instruments 745 284 Embedded derivatives 1,118 746 Liabilities: Derivative contracts designated as hedging instruments $ 2,378 $ 464 Derivative contracts not designated as hedging instruments 874 2,440 Embedded derivatives 1,191 2,239 In Thousands Level 3 March 30, September 29, 2018 2017 Assets: Estimated value of assets held for sale $ 18,418 $ 19,835 Liabilities: Estimated value of liabilities held for sale $ 7,636 $ 8,908

Derivative Financial Instrume25

Derivative Financial Instruments (Tables)	6 Months Ended
	Mar. 30, 2018
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Fair Value of Derivative Instruments In Consolidated Balance Sheet	Fair value of derivative instruments in the Consolidated Balance Sheet at March 30, 2018, and September 29, 2017, consisted of: In Thousands Fair Value March 30, September 29, Classification 2018 2017 Foreign Currency Forward Exchange Contracts: Other current assets $ 8,413 $ 11,433 Other assets 805 2,783 Accrued liabilities 1,928 2,506 Other liabilities 1,324 398 Embedded Derivative Instruments: Other current assets $ 792 $ 604 Other assets 326 142 Accrued liabilities 872 1,657 Other liabilities 319 582
Effect of Derivative Instruments on Consolidated Statement of Operations and Comprehensive Income (Loss)	The effect of derivative instruments on the Consolidated Statement of Operations and Comprehensive Income (Loss) for the three month and six month periods ended March 30, 2018, and March 31, 2017, consisted of: Fair Value Hedges and Embedded Derivatives The Company recognized the following gains (losses) on contracts designated as fair value hedges and embedded derivatives: In Thousands Three Months Ended Six Months Ended Gain (Loss) March 30, March 31, March 30, March 31, 2018 2017 2018 2017 Fair Value Hedges: Recognized in cost of sales $ (893 ) $ 692 $ (1,271 ) $ (241 ) Recognized in selling, general & administrative (691 ) 561 (1,014 ) (207 ) Embedded derivatives: Recognized in sales $ 386 $ (518 ) $ 706 $ (265 ) Cash Flow Hedges The Company recognized the following gains (losses) on contracts designated as cash flow hedges: In Thousands Three Months Ended Six Months Ended Gain (Loss) March 30, March 31, March 30, March 31, 2018 2017 2018 2017 Foreign currency forward exchange contracts: Recognized in AOCI (effective portion) $ (11,797 ) $ 9,355 $ (14,291 ) $ 6,939 Reclassified from AOCI into sales 4,984 (3,446 ) 6,918 (7,871 ) Net Investment Hedges The Company recognized the following gains (losses) on contracts designated as net investment hedges: In Thousands Three Months Ended Six Months Ended Gain (Loss) March 30, March 31, March 30, March 31, 2018 2017 2018 2017 2023 Notes and Accrued Interest: Recognized in AOCI $ (10,682 ) $ (4,534 ) $ (16,979 ) $ 19,379

Debt (Tables)

Debt (Tables)	6 Months Ended
	Mar. 30, 2018
Debt Disclosure [Abstract]
Long-Term Debt	Long-term debt at March 30, 2018 and September 29, 2017, consisted of the following: In Thousands March 30, September 29, 2018 2017 U.S. credit facility $ 45,000 $ 50,000 U.S. Term Loan, due April 2020 218,750 225,000 3.625% Senior Notes, due April 2023 406,692 389,862 Government refundable advances 44,590 45,549 Obligation under capital leases 70,378 71,091 Debt issuance costs (4,158 ) (4,654 ) 781,252 776,848 Less current maturities 15,170 17,424 Carrying amount of long-term debt $ 766,082 $ 759,424

Employee Stock Plans (Tables)

Employee Stock Plans (Tables)	6 Months Ended
	Mar. 30, 2018
Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Fair Value of Option Granted using Black-Scholes Pricing Model	The fair value of each option granted by the Company was estimated using a Black-Scholes pricing model, which uses the assumptions noted in the following table. Six Months Ended March 30, March 31, 2018 2017 Volatility 34.32% 34.97 - 35.42% Risk-free interest rate 2.15 - 2.47% 1.98 - 2.51% Expected life (years) 5 - 9 5 - 9 Dividends 0 0

Discontinued Operations (Tables

Discontinued Operations (Tables)	6 Months Ended
	Mar. 30, 2018
Discontinued Operations And Disposal Groups [Abstract]
Schedule of Discontinued Operations	The operating results of the discontinued operations for the three-month period ended March 30, 2018, consisted of the following: In Thousands Avionics & Sensors & Advanced Controls Systems Materials Other Total Net Sales $ - $ - $ - $ - $ - Operating earnings (loss) 869 - (1,207 ) (50 ) (388 ) Tax expense (benefit) 10 - (308 ) (13 ) (311 ) Income (loss) from discontinued operations $ 859 $ - $ (899 ) $ (37 ) $ (77 ) Included in Operating Earnings (Loss): Gain (loss) on net assets held for sale $ 801 $ - $ 505 $ - $ 1,306 The operating results of the discontinued operations for the three-month period ended March 31, 2017, consisted of the following: In Thousands Avionics & Sensors & Advanced Controls Systems Materials Other Total Net Sales $ 2,268 $ - $ - $ - $ 2,268 Operating earnings (loss) 752 (2 ) (1,269 ) (289 ) (808 ) Tax expense (benefit) (191 ) - (482 ) (101 ) (774 ) Income (loss) from discontinued operations $ 943 $ (2 ) $ (787 ) $ (188 ) $ (34 ) Included in Operating Earnings (Loss): Gain (loss) on net assets held for sale $ 54 $ - $ 265 $ - $ 319 Gain on sale of discontinued operations 1,188 - - - 1,188 The operating results of the discontinued operations for the six-month period ended March 30, 2018, consisted of the following: In Thousands Avionics & Sensors & Advanced Controls Systems Materials Other Total Net Sales $ - $ - $ - $ - $ - Operating earnings (loss) 883 - (1,490 ) (50 ) (657 ) Tax expense (benefit) 33 - (434 ) (13 ) (414 ) Income (loss) from discontinued operations $ 850 $ - $ (1,056 ) $ (37 ) $ (243 ) Included in Operating Earnings (Loss): Gain (loss) on net assets held for sale $ 750 $ - $ 645 $ - $ 1,395 The operating results of the discontinued operations for the six-month period ended March 31, 2017, consisted of the following: In Thousands Avionics & Sensors & Advanced Controls Systems Materials Other Total Net Sales $ 4,964 $ - $ - $ - $ 4,964 Operating earnings (loss) (119 ) 893 (6,616 ) (893 ) (6,735 ) Tax expense (benefit) (430 ) - (623 ) (312 ) (1,365 ) Income (loss) from discontinued operations $ 311 $ 893 $ (5,993 ) $ (581 ) $ (5,370 ) Included in Operating Earnings (Loss): Gain (loss) on net assets held for sale $ (86 ) $ - $ (4,323 ) $ - $ (4,409 ) Gain on sale of discontinued operations 1,188 - - - 1,188 Assets and Liabilities Held for Sale within the Consolidated Balance Sheet at March 30, 2018, are comprised of the following: In Thousands Avionics & Sensors & Advanced Controls Systems Materials Total Other current assets $ - $ - $ 4,300 $ 4,300 Current Assets of Businesses Held for Sale - - 4,300 4,300 Net property, plant and equipment 5,262 - - 5,262 Other assets - - 8,856 8,856 Non-Current Assets of Businesses Held for Sale 5,262 - 8,856 14,118 Accounts payable - - 30 30 Accrued liabilities - - 4,499 4,499 Current Liabilities of Businesses Held for Sale - - 4,529 4,529 Deferred income tax liabilities - - 2,787 2,787 Other liabilities - - 320 320 Non-Current Liabilities of Businesses Held for Sale - - 3,107 3,107 Net Assets of Businesses Held for Sale $ 5,262 $ - $ 5,520 $ 10,782 Assets and Liabilities Held for Sale within the Consolidated Balance Sheet at September 29, 2017, were comprised of the following: In Thousands Avionics & Sensors & Advanced Controls Systems Materials Total Other current assets $ - $ - $ 6,501 $ 6,501 Current Assets of Businesses Held for Sale - - 6,501 6,501 Net property, plant and equipment 5,262 - - 5,262 Other assets - - 8,072 8,072 Non-Current Assets of Businesses Held for Sale 5,262 - 8,072 13,334 Accounts payable - - 138 138 Accrued liabilities - - 7,046 7,046 Current Liabilities of Businesses Held for Sale - - 7,184 7,184 Deferred income tax liabilities - - 1,404 1,404 Other liabilities - - 320 320 Non-Current Liabilities of Businesses Held for Sale - - 1,724 1,724 Net Assets of Businesses Held for Sale $ 5,262 $ - $ 5,665 $ 10,927

Business Segment Information (T

Business Segment Information (Tables)	6 Months Ended
	Mar. 30, 2018
Segment Reporting [Abstract]
Business Segment Information for Continuing Operations	Business segment information for continuing operations includes the segments of Avionics & Controls, Sensors & Systems and Advanced Materials. In Thousands Three Months Ended Six Months Ended March 30, March 31, March 30, March 31, 2018 2017 2018 2017 Sales Avionics & Controls $ 212,814 $ 213,293 $ 415,517 $ 405,975 Sensors & Systems 198,153 182,727 373,621 350,483 Advanced Materials 106,662 113,111 210,536 211,089 $ 517,629 $ 509,131 $ 999,674 $ 967,547 Earnings from Continuing Operations Before Income Taxes Avionics & Controls $ 23,673 $ 20,772 $ 44,058 $ 38,689 Sensors & Systems 19,271 26,357 30,984 44,500 Advanced Materials 9,553 28,322 24,136 38,202 Segment Earnings 52,497 75,451 99,178 121,391 Corporate expense (18,573 ) (20,021 ) (38,621 ) (37,265 ) Interest income 449 100 747 196 Interest expense (8,167 ) (7,458 ) (15,771 ) (15,346 ) $ 26,206 $ 48,072 $ 45,533 $ 68,976

Earnings Per Share and Shareh30

Earnings Per Share and Shareholders Equity - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended	45 Months Ended
	May 04, 2018	Mar. 30, 2018	Mar. 31, 2017	Mar. 30, 2018	Mar. 31, 2017	Sep. 29, 2017	Mar. 30, 2018	Mar. 31, 2015	Jun. 30, 2014
Earnings Per Share And Shareholders Equity [Line Items]
Anti-dilutive shares excluded from computation of earnings per share		970,625	740,575		775,225
Preferred stock shares authorized		25,000		25,000			25,000
Preferred stock, par value		$ 100		$ 100			$ 100
Common stock, shares authorized		60,000,000		60,000,000		60,000,000	60,000,000
Common stock, par value		$ 0.20		$ 0.20		$ 0.20	$ 0.20
Preferred stock shares outstanding		0		0		0	0
Approved and authorized amount under the stock repurchase program								$ 400,000,000	$ 200,000,000
Additional approved and authorized amount under the stock repurchase program								$ 200,000,000
Stock repurchased during period, shares		313,900	0	601,400	0	0	3,737,327
Average price paid per share of repurchased stock		$ 73.29		$ 72.25
Aggregate value of repurchased stock		$ 23,000,000		$ 43,400,000			$ 352,000,000
Stock repurchase program, remaining authorized amount available for repurchase in future			$ 48,000,000		$ 48,000,000
Subsequent Event
Earnings Per Share And Shareholders Equity [Line Items]
Stock repurchased during period, shares	0
Series B Preferred Stock
Earnings Per Share And Shareholders Equity [Line Items]
Preferred stock shares authorized		475,000		475,000			475,000
Preferred stock, par value		$ 1		$ 1			$ 1
Preferred stock shares outstanding		0		0		0	0

Shares Used for Calculating Ear

Shares Used for Calculating Earnings Per Share (Detail) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2018	Mar. 31, 2017	Mar. 30, 2018	Mar. 31, 2017
Earnings Per Share [Abstract]
Shares used for basic earnings per share	29,614	29,719	29,758	29,633
Shares used for diluted earnings per share	29,726	29,959	29,758	29,895

Schedule of Changes in Issued a

Schedule of Changes in Issued and Outstanding Common Shares and Treasury Stock (Detail) - shares	3 Months Ended		6 Months Ended		12 Months Ended	45 Months Ended
	Mar. 30, 2018	Mar. 31, 2017	Mar. 30, 2018	Mar. 31, 2017	Sep. 29, 2017	Mar. 30, 2018
Equity [Abstract]
Balance, beginning of year			33,117,473	32,564,252	32,564,252
Shares issued under share-based compensation plans			46,888		553,221
Balance, end of current period	33,164,361		33,164,361		33,117,473	33,164,361
Balance, beginning of year			(3,135,927)	(3,135,927)	(3,135,927)
Shares purchased	(313,900)	0	(601,400)	0	0	(3,737,327)
Balance, end of current period	(3,737,327)		(3,737,327)		(3,135,927)	(3,737,327)
Shares outstanding, end of period	29,427,034		29,427,034		29,981,546	29,427,034

Schedule of Components of Accum

Schedule of Components of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	Mar. 30, 2018	Sep. 29, 2017
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Unrealized gain on derivative contracts	$ 6,096	$ 13,469
Tax effect	(1,958)	(3,892)
Unrealized gain on derivative contracts, Total	4,138	9,577
Pension and post-retirement obligations	(79,921)	(81,782)
Tax effect	27,482	27,956
Pension and post-retirement obligations, Total	(52,439)	(53,826)
Foreign currency translation adjustment	(204,442)	(222,621)
Accumulated other comprehensive income (loss)	$ (252,743)	$ (266,870)

Schedule of Net Periodic Pensio

Schedule of Net Periodic Pension Cost (Detail) - Pension Plans, Defined Benefit - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2018	Mar. 31, 2017	Mar. 30, 2018	Mar. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 3,396	$ 3,368	$ 6,769	$ 6,725
Interest cost	4,120	3,734	8,227	7,455
Expected return on plan assets	(6,826)	(6,290)	(13,634)	(12,555)
Amortization of prior service cost	127	115	253	229
Amortization of actuarial (gain) loss	799	1,638	1,596	3,401
Net periodic cost (benefit)	$ 1,616	$ 2,565	$ 3,211	$ 5,255

Schedule of Financial Assets an

Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Mar. 30, 2018	Sep. 29, 2017
Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative contracts designated as hedging instruments, Assets	$ 8,473	$ 13,932
Derivative contracts not designated as hedging instruments, Assets	745	284
Embedded derivatives, Assets	1,118	746
Derivative contracts designated as hedging instruments, Liabilities	2,378	464
Derivative contracts not designated as hedging instruments, Liabilities	874	2,440
Embedded derivatives, Liabilities	1,191	2,239
Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Estimated value of assets held for sale	18,418	19,835
Estimated value of liabilities held for sale	$ 7,636	$ 8,908

Derivative Financial Instrume36

Derivative Financial Instruments - Additional Information (Detail) € in Millions, $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 30, 2015EUR (€)	Mar. 30, 2018USD ($)	Mar. 31, 2017USD ($)	Mar. 30, 2018USD ($)	Mar. 31, 2017USD ($)	Sep. 29, 2017USD ($)
Derivative [Line Items]
Gains (Losses) on foreign currency forward exchange contracts not designated as an accounting hedge		$ 2.3	$ 1.1	$ 2.4	$ 0.2
Net Gain (Loss) expected to be reclassified into earnings over next 12 months		$ 7		$ 7
Maturities of forecasted transactions using forward exchange contracts				24 months
3.625% Senior Notes, Due April 2023
Derivative [Line Items]
Debt instrument, interest rate	3.625%	3.625%		3.625%		3.625%
Debt instruments maturity date	Apr. 30, 2023
Net Investment Hedges | 3.625% Senior Notes, Due April 2023
Derivative [Line Items]
Derivative notional amount | €	€ 330
Foreign Exchange Forward
Derivative [Line Items]
Derivative notional amount		$ 476.8		$ 476.8		$ 406.9
Foreign Exchange Forward Contracts Related to Net Monetary Assets | Cash Flow Hedging
Derivative [Line Items]
Derivative notional amount		$ 100		$ 100

Fair Value of Derivative Instru

Fair Value of Derivative Instruments in Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands	Mar. 30, 2018	Sep. 29, 2017
Foreign Exchange Forward | Other Current Assets
Derivatives Fair Value [Line Items]
Derivative Instruments, Assets	$ 8,413	$ 11,433
Foreign Exchange Forward | Other Assets
Derivatives Fair Value [Line Items]
Derivative Instruments, Assets	805	2,783
Foreign Exchange Forward | Other Liabilities
Derivatives Fair Value [Line Items]
Derivative Instruments, Liabilities	1,324	398
Foreign Exchange Forward | Accrued Liabilities
Derivatives Fair Value [Line Items]
Derivative Instruments, Liabilities	1,928	2,506
Embedded Derivative Financial Instruments | Other Current Assets
Derivatives Fair Value [Line Items]
Derivative Instruments, Assets	792	604
Embedded Derivative Financial Instruments | Other Assets
Derivatives Fair Value [Line Items]
Derivative Instruments, Assets	326	142
Embedded Derivative Financial Instruments | Other Liabilities
Derivatives Fair Value [Line Items]
Derivative Instruments, Liabilities	319	582
Embedded Derivative Financial Instruments | Accrued Liabilities
Derivatives Fair Value [Line Items]
Derivative Instruments, Liabilities	$ 872	$ 1,657

Effect of Derivative Instrument

Effect of Derivative Instruments on Consolidated Statement of Operations and Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2018	Mar. 31, 2017	Mar. 30, 2018	Mar. 31, 2017
Fair Value Hedges | Cost of Sales
Derivative Instruments Gain Loss [Line Items]
Gains (losses) on contracts designated as fair value hedges and embedded derivatives	$ (893)	$ 692	$ (1,271)	$ (241)
Fair Value Hedges | Selling, General & Administrative
Derivative Instruments Gain Loss [Line Items]
Gains (losses) on contracts designated as fair value hedges and embedded derivatives	(691)	561	(1,014)	(207)
Net Investment Hedges | 2023 Notes and Accrued Interest
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in AOCI	(10,682)	(4,534)	(16,979)	19,379
Embedded Derivatives | Sales
Derivative Instruments Gain Loss [Line Items]
Gains (losses) on contracts designated as fair value hedges and embedded derivatives	386	(518)	706	(265)
Foreign Exchange Forward | Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in AOCI (effective portion)	(11,797)	9,355	(14,291)	6,939
Gain (Loss) Reclassified from AOCI into sales	$ 4,984	$ (3,446)	$ 6,918	$ (7,871)

Insurance Recovery - Additional

Insurance Recovery - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2018	Mar. 31, 2017	Mar. 30, 2018	Mar. 31, 2017
Insurance [Abstract]
Insurance recovery received	$ 0	$ 5,189	$ 0	$ 7,789

License Fee Income - Additional

License Fee Income - Additional Information (Detail) - USD ($) $ in Thousands	Jan. 04, 2018	Dec. 22, 2017	Mar. 30, 2018	Mar. 31, 2017	Mar. 30, 2018	Mar. 31, 2017
Revenues [Abstract]
License income from third party	$ 4,500	$ 3,000	$ 2,268	$ 0	$ 5,293	$ 0
Inventory sold	400
License fee income net of intangible assets write-off	2,300
Write-off intangible assets, net	$ 2,200
Inventory and manufacturing equipment sold		$ 1,000
Royalty percentage on sale of licensed product					15.00%

Sale of Business - Additional I

Sale of Business - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 15, 2018	Mar. 30, 2018	Mar. 31, 2017	Mar. 30, 2018	Mar. 31, 2017
Sale Of Business [Line Items]
Sale of business	$ 50,000			$ 47,814	$ 600
Gain (loss) on sale of business	(5,300)	$ (5,310)	$ 0	$ (5,310)	$ 0
Valuation Allowance
Sale Of Business [Line Items]
Gain (loss) on sale of business	$ 700

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	Dec. 22, 2017	Dec. 21, 2017	Mar. 30, 2018	Dec. 29, 2017	Mar. 31, 2017	Mar. 30, 2018	Mar. 31, 2017	Sep. 28, 2018
Income Taxes [Line Items]
U.S. federal corporate tax rate	21.00%	35.00%		35.00%
Recognized provisional amount as component of income tax expense from continuing operations due to change in tax rate						$ 48.6
Remeasurement of deferred tax assets and liabilities based on rate at which expected to reverse in future						21.00%
Provisional amount recorded related to remeasurement of deferred tax balance						$ 6.6
Provisional amount for one-time transition tax liability resulting in increase in income tax expense due to foreign tax effects						$ 42
Blended U.S. tax rate			24.50%
Unrecognized tax benefit reasonably possible to be recognized by the end of fiscal 2018				$ 1
Scenario, Forecast
Income Taxes [Line Items]
U.S. federal corporate tax rate								21.00%
Adjustments for New Accounting Pronouncement | Adjustments for New Accounting Principle, Early Adoption
Income Taxes [Line Items]
Income tax rate			7.90%		27.20%		18.30%
Adjustments for New Accounting Pronouncement | Adjustments for New Accounting Principle, Early Adoption | France
Income Taxes [Line Items]
Discrete tax benefits related to valuation allowance release							$ 5.4
Adjustments for New Accounting Pronouncement | Adjustments for New Accounting Principle, Early Adoption | After Effect of Tax Cuts and Jobs Act
Income Taxes [Line Items]
Income tax rate						122.70%
Adjustments for New Accounting Pronouncement | Adjustments for New Accounting Principle, Early Adoption | Elastomer Business
Income Taxes [Line Items]
Tax benefit from reduction of a capital loss valuation reserve			$ 4.7			$ 4.7

Long-Term Debt (Detail)

Long-Term Debt (Detail) - USD ($) $ in Thousands	Mar. 30, 2018	Sep. 29, 2017
Debt Instrument [Line Items]
Credit facility	$ 45,000	$ 50,000
Government refundable advances	44,590	45,549
Obligation under capital leases	70,378	71,091
Debt issuance costs	(4,158)	(4,654)
Total long-term debt	781,252	776,848
Less current maturities	15,170	17,424
Carrying amount of long-term debt	766,082	759,424
U.S. Credit Facility
Debt Instrument [Line Items]
Credit facility	45,000	50,000
U.S. Term Loan, due April 2020
Debt Instrument [Line Items]
Term Loan	218,750	225,000
3.625% Senior Notes, due April 2023
Debt Instrument [Line Items]
Senior Notes	$ 406,692	$ 389,862

Long-Term Debt (Parenthetical)

Long-Term Debt (Parenthetical) (Detail)	6 Months Ended	12 Months Ended
	Mar. 30, 2018	Sep. 29, 2017	Apr. 30, 2015
3.625% Senior Notes, due April 2023
Debt Instrument [Line Items]
Long-term debt interest rate	3.625%	3.625%	3.625%
Debt instruments maturity period	2023-04	2023-04
U.S. Term Loan, due April 2020
Debt Instrument [Line Items]
Debt instruments maturity period	2020-04	2020-04

Debt - Additional Information (

Debt - Additional Information (Detail) € in Millions	Aug. 03, 2015USD ($)	Apr. 09, 2015USD ($)	Apr. 30, 2015USD ($)	Mar. 30, 2018USD ($)	Sep. 29, 2017USD ($)	Apr. 30, 2015EUR (€)
Debt Instrument [Line Items]
Credit facilities				$ 45,000,000	$ 50,000,000
Imputed interest on advance				2.52%
Government refundable advances				$ 44,590,000	45,549,000
Present value of minimum lease payment				$ 68,300,000	$ 69,000,000
U.S. Term Loan, due April 2020
Debt Instrument [Line Items]
Loan amortization rate				1.25%
Debt instrument original principal balance maturity period				2020-03
Debt instruments maturity period				2020-04	2020-04
3.625% Senior Notes, Due April 2023
Debt Instrument [Line Items]
Debt instruments maturity period				2023-04	2023-04
Debt instrument, interest rate				3.625%	3.625%	3.625%
Fair market value of long-term debt and short-term borrowings				$ 414,300,000	$ 403,200,000
3.625% Senior Notes, Due April 2023 | TA Mfg Limited
Debt Instrument [Line Items]
Debt issuance costs			$ 5,900,000
Debt instrument, face amount | €						€ 330
Debt instrument, interest rate						3.625%
Net proceeds from issuance of debt			$ 350,800,000
3.625% Senior Notes, Due April 2023 | Debt Redemption After April 15, 2018 | TA Mfg Limited
Debt Instrument [Line Items]
Debt instrument redemption price percentage plus accrued interest			102.719%
3.625% Senior Notes, Due April 2023 | Debt Redemption After April 15, 2021 | TA Mfg Limited
Debt Instrument [Line Items]
Debt instrument redemption price percentage plus accrued interest			100.00%
London Interbank Offered Rate (LIBOR) | U.S. Term Loan, due April 2020
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate				1.50%
Interest rate				3.38%
London Interbank Offered Rate (LIBOR) | Minimum | U.S. Term Loan, due April 2020
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate	1.25%
London Interbank Offered Rate (LIBOR) | Maximum | U.S. Term Loan, due April 2020
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate	2.00%
Delayed-Draw Term Loan Facility | U.S. Term Loan, due April 2020
Debt Instrument [Line Items]
Funds borrowed under the delayed-draw term Loan	$ 250,000,000
Secured Debt
Debt Instrument [Line Items]
Credit facility maturity date		Apr. 9, 2020
Debt issuance costs		$ 2,300,000
Credit facilities				$ 45,000,000
Secured Debt | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate				1.50%
Interest rate				3.38%
Secured Debt | London Interbank Offered Rate (LIBOR) | Minimum
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate		1.25%
Secured Debt | London Interbank Offered Rate (LIBOR) | Maximum
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate		2.00%
Secured Debt | Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		$ 500,000,000
Secured Debt | Delayed-Draw Term Loan Facility
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		$ 250,000,000

Employee Stock Plans - Addition

Employee Stock Plans - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Mar. 30, 2018	Mar. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation	$ 6,715	$ 7,352
Shares issued under share-based compensation plans	46,888	345,484
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted	42,050	37,100
Weighted Average Grant Date Fair Value	$ 87.34	$ 76.83
Performance Share Plan Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted	33,700	42,600
Performance period	3 years
Performance Share Plan Shares | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of the target number of shares paid out	0.00%
Performance Share Plan Shares | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of the target number of shares paid out	300.00%
Employee Share-save Scheme
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Discount rate of market value on purchase date	5.00%
The term of options, years	3 years
Number of options granted	0	0
Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of options granted	218,800	234,700
Weighted-average grant date fair value of options granted	$ 30.85	$ 32.60
Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Discount rate of market value on purchase date	5.00%

Schedule of Fair Value of Optio

Schedule of Fair Value of Option Granted using Black-Scholes Pricing Model (Detail) - Equity Incentive Plan - USD ($)	6 Months Ended
	Mar. 30, 2018	Mar. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Volatility	34.32%
Volatility, minimum		34.97%
Volatility, maximum		35.42%
Risk-free interest rate, minimum	2.15%	1.98%
Risk-free interest rate, maximum	2.47%	2.51%
Dividends	$ 0	$ 0
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected life (years)	5 years	5 years
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected life (years)	9 years	9 years

Discontinued Operations - Addit

Discontinued Operations - Additional Information (Detail) $ in Thousands, £ in Millions

Mar. 30, 2018USD ($)

Mar. 30, 2018GBP (£)

Mar. 15, 2018USD ($)

Mar. 28, 2017USD ($)

May 04, 2016GBP (£)

Dec. 29, 2017USD ($)

Dec. 29, 2017GBP (£)

Mar. 30, 2018USD ($)

Mar. 31, 2017USD ($)

Mar. 31, 2017USD ($)

Mar. 30, 2018USD ($)

Mar. 31, 2017USD ($)

Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]

Sale of discontinued operation

$ 50,000

$ 47,814

$ 600

Gain on sale of discontinued operation

$ 1,188

0

1,188

Loss from Discontinued Operations Attributable to Esterline, Net of Tax

$ (77)

$ (34)

(34)

(243)

(5,370)

Loss on net assets held for sale

$ 1,306

$ 319

$ 1,395

(4,409)

Wallop

Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]

Sale of discontinued operation | £

£ 2.5

Deferred consideration payments term

3 years

Deferred consideration payment date

May 3, 2019

Payments for earn out

$ 6,700

£ 4.8

Deferred consideration earned

$ 1,800

£ 1.3

Loss on net assets held for sale

$ 4,300

Wallop | Maximum

Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]

Deferred consideration payments | £

£ 9

Indemnity obligations losses for buyer | £

£ 5

Deferred consideration payable acceptable orders percentage

31.00%

Wallop | Minimum

Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]

Deferred consideration payable acceptable orders percentage

26.50%

Small Manufacturing Business

Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]

Sale of discontinued operation

$ 600

Discontinued operation, note receivable

2,400

Gain on sale of discontinued operation

$ 800

Discontinued operation, note receivable due date

Mar. 28, 2021

Discontinued operation ,note receivable interest rate

2.05%

Discontinued Operations Income

Discontinued Operations Income (Loss) Net of Tax (Detail) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Mar. 30, 2018	Mar. 31, 2017	Mar. 31, 2017	Mar. 30, 2018	Mar. 31, 2017
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net Sales	$ 0		$ 2,268	$ 0	$ 4,964
Operating earnings (loss)	(388)		(808)	(657)	(6,735)
Tax expense (benefit)	(311)		(774)	(414)	(1,365)
Income (loss) from discontinued operations	(77)	$ (34)	(34)	(243)	(5,370)
Included in Operating Earnings (Loss):
Gain (loss) on net assets held for sale	1,306		319	1,395	(4,409)
Gain on sale of discontinued operations			1,188	0	1,188
Avionics & Controls
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net Sales	0		2,268	0	4,964
Operating earnings (loss)	869		752	883	(119)
Tax expense (benefit)	10		(191)	33	(430)
Income (loss) from discontinued operations	859		943	850	311
Included in Operating Earnings (Loss):
Gain (loss) on net assets held for sale	801		54	750	(86)
Gain on sale of discontinued operations			1,188		1,188
Sensors & Systems
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net Sales	0		0	0	0
Operating earnings (loss)	0		(2)	0	893
Tax expense (benefit)	0		0	0	0
Income (loss) from discontinued operations	0		(2)	0	893
Included in Operating Earnings (Loss):
Gain (loss) on net assets held for sale	0		0	0	0
Gain on sale of discontinued operations			0		0
Advanced Materials
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net Sales	0		0	0	0
Operating earnings (loss)	(1,207)		(1,269)	(1,490)	(6,616)
Tax expense (benefit)	(308)		(482)	(434)	(623)
Income (loss) from discontinued operations	(899)		(787)	(1,056)	(5,993)
Included in Operating Earnings (Loss):
Gain (loss) on net assets held for sale	505		265	645	(4,323)
Gain on sale of discontinued operations			0		0
Other
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net Sales	0		0	0	0
Operating earnings (loss)	(50)		(289)	(50)	(893)
Tax expense (benefit)	(13)		(101)	(13)	(312)
Income (loss) from discontinued operations	(37)		(188)	(37)	(581)
Included in Operating Earnings (Loss):
Gain (loss) on net assets held for sale	$ 0		0	$ 0	0
Gain on sale of discontinued operations			$ 0		$ 0

Discontinued Operations Assets

Discontinued Operations Assets and Liabilities Held for Sale (Detail) - USD ($) $ in Thousands	Mar. 30, 2018	Sep. 29, 2017
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Other current assets	$ 4,300	$ 6,501
Current Assets of Businesses Held for Sale	4,300	6,501
Net property, plant and equipment	5,262	5,262
Other assets	8,856	8,072
Non-Current Assets of Businesses Held for Sale	14,118	13,334
Accounts payable	30	138
Accrued liabilities	4,499	7,046
Current Liabilities of Businesses Held for Sale	4,529	7,184
Deferred income tax liabilities	2,787	1,404
Other liabilities	320	320
Non-Current Liabilities of Businesses Held for Sale	3,107	1,724
Net Assets of Businesses Held for Sale	10,782	10,927
Avionics & Controls
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Other current assets	0	0
Current Assets of Businesses Held for Sale	0	0
Net property, plant and equipment	5,262	5,262
Other assets	0	0
Non-Current Assets of Businesses Held for Sale	5,262	5,262
Accounts payable	0	0
Accrued liabilities	0	0
Current Liabilities of Businesses Held for Sale	0	0
Deferred income tax liabilities	0	0
Other liabilities	0	0
Non-Current Liabilities of Businesses Held for Sale	0	0
Net Assets of Businesses Held for Sale	5,262	5,262
Sensors & Systems
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Other current assets	0	0
Current Assets of Businesses Held for Sale	0	0
Net property, plant and equipment	0	0
Other assets	0	0
Non-Current Assets of Businesses Held for Sale	0	0
Accounts payable	0	0
Accrued liabilities	0	0
Current Liabilities of Businesses Held for Sale	0	0
Deferred income tax liabilities	0	0
Other liabilities	0	0
Non-Current Liabilities of Businesses Held for Sale	0	0
Net Assets of Businesses Held for Sale	0	0
Advanced Materials
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Other current assets	4,300	6,501
Current Assets of Businesses Held for Sale	4,300	6,501
Net property, plant and equipment	0	0
Other assets	8,856	8,072
Non-Current Assets of Businesses Held for Sale	8,856	8,072
Accounts payable	30	138
Accrued liabilities	4,499	7,046
Current Liabilities of Businesses Held for Sale	4,529	7,184
Deferred income tax liabilities	2,787	1,404
Other liabilities	320	320
Non-Current Liabilities of Businesses Held for Sale	3,107	1,724
Net Assets of Businesses Held for Sale	$ 5,520	$ 5,665

Business Segment Information fo

Business Segment Information for Continuing Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2018	Mar. 31, 2017	Mar. 30, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Sales	$ 517,629	$ 509,131	$ 999,674	$ 967,547
Interest income	449	100	747	196
Interest expense	(8,167)	(7,458)	(15,771)	(15,346)
Earnings from Continuing Operations Before Income Taxes	26,206	48,072	45,533	68,976
Avionics & Controls
Segment Reporting Information [Line Items]
Sales	212,814	213,293	415,517	405,975
Sensors & Systems
Segment Reporting Information [Line Items]
Sales	198,153	182,727	373,621	350,483
Advanced Materials
Segment Reporting Information [Line Items]
Sales	106,662	113,111	210,536	211,089
Operating Segments
Segment Reporting Information [Line Items]
Segment Earnings	52,497	75,451	99,178	121,391
Operating Segments | Avionics & Controls
Segment Reporting Information [Line Items]
Segment Earnings	23,673	20,772	44,058	38,689
Operating Segments | Sensors & Systems
Segment Reporting Information [Line Items]
Segment Earnings	19,271	26,357	30,984	44,500
Operating Segments | Advanced Materials
Segment Reporting Information [Line Items]
Segment Earnings	9,553	28,322	24,136	38,202
Corporate Non Segment
Segment Reporting Information [Line Items]
Corporate expense	$ (18,573)	$ (20,021)	$ (38,621)	$ (37,265)