TransDigm (TDG) 10-Q 8 May 19 2019 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information Document - shares	6 Months Ended
	Mar. 30, 2019	Apr. 30, 2019
Document Information [Line Items]
Document Type	10-Q
Document Period End Date	Mar. 30, 2019
Entity Registrant Name	TransDigm Group Incorporated
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Trading Symbol	TDG
Entity Central Index Key	0001260221
Current Fiscal Year End Date	--09-30
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		53,179,914

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 30, 2019	Sep. 30, 2018
CURRENT ASSETS:
Cash and cash equivalents	$ 2,441,336	$ 2,073,017
Restricted cash	387,566	0
Trade accounts receivable - Net	1,141,249	704,310
Inventories - Net	1,453,044	805,292
Prepaid expenses and other	172,334	74,668
Total current assets	5,595,529	3,657,287
PROPERTY, PLANT AND EQUIPMENT - NET	737,599	388,333
GOODWILL	8,614,316	6,223,290
OTHER INTANGIBLE ASSETS - NET	2,724,452	1,788,404
DEFERRED INCOME TAXES	38,972	0
OTHER	86,288	140,153
TOTAL ASSETS	17,797,156	12,197,467
CURRENT LIABILITIES:
Current portion of long-term debt	448,163	75,817
Short-term borrowings - trade receivable securitization facility	299,806	299,519
Accounts payable	318,586	173,603
Accrued liabilities	659,638	351,443
Total current liabilities	1,726,193	900,382
LONG-TERM DEBT	16,509,181	12,501,946
DEFERRED INCOME TAXES	658,175	399,496
OTHER NON-CURRENT LIABILITIES	385,854	204,114
Total liabilities	19,279,403	14,005,938
TD GROUP STOCKHOLDERS’ DEFICIT:
Common stock - $.01 par value; authorized 224,400,000 shares; issued 57,304,097 and 56,895,686 at March 30, 2019 and September 30, 2018, respectively	573	569
Additional paid-in capital	1,291,103	1,208,742
Accumulated deficit	(1,851,113)	(2,246,578)
Accumulated other comprehensive (loss) income	(157,037)	4,100
Treasury stock, at cost; 4,161,326 shares at March 30, 2019 and September 30, 2018, respectively	(775,304)	(775,304)
Total TD Group stockholders’ deficit	(1,491,778)	(1,808,471)
NONCONTROLLING INTEREST	9,531	0
Total stockholders' deficit	(1,482,247)	(1,808,471)
TOTAL LIABILITIES AND STOCKHOLDERS’ DEFICIT	$ 17,797,156	$ 12,197,467

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets Parenthetical - $ / shares	Mar. 30, 2019	Sep. 30, 2018
Statement of Financial Position [Abstract]
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	224,400,000	224,400,000
Common Stock, Shares, Issued	57,304,097	56,895,686
Treasury Stock, Shares	4,161,326	4,161,326

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018
NET SALES	$ 1,195,938	$ 933,070	$ 2,189,240	$ 1,781,030
COST OF SALES	536,618	398,996	965,803	770,306
GROSS PROFIT	659,320	534,074	1,223,437	1,010,724
SELLING AND ADMINISTRATIVE EXPENSES	164,366	107,526	286,549	214,054
AMORTIZATION OF INTANGIBLE ASSETS	23,063	17,457	43,097	34,569
INCOME FROM OPERATIONS	471,891	409,091	893,791	762,101
INTEREST EXPENSE - NET	201,409	161,266	373,409	322,199
REFINANCING COSTS	3,298	638	3,434	1,751
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	267,184	247,187	516,948	438,151
INCOME TAX PROVISION	64,552	45,347	118,274	(75,700)
INCOME FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS	202,632	201,840	398,674	513,851
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(224)	0	(224)	0
NET INCOME FROM CONTINUING OPERATIONS ATTRIBUTABLE TO TD GROUP	202,408	201,840	398,450	513,851
LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX	0	(5,562)	0	(2,798)
NET INCOME ATTRIBUTABLE TO TD GROUP	202,408	196,278	398,450	511,053
NET INCOME APPLICABLE TO TD GROUP COMMON STOCK	$ 202,408	$ 196,278	$ 374,141	$ 454,905
Net earnings per share attributable to TD Group stockholders:
Net earnings per share from continuing operations - basic and diluted	$ 3.60	$ 3.63	$ 6.65	$ 8.23
Net loss per share from discontinued operations - basic and diluted	0	(0.10)	0	(0.05)
Net earnings per share	$ 3.60	$ 3.53	$ 6.65	$ 8.18
Weighted-average shares outstanding:
Basic and diluted (in shares)	56,265	55,605	56,265	55,599

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Mar. 30, 2019	Dec. 29, 2018	Mar. 31, 2018	Dec. 30, 2017	Mar. 30, 2019	Mar. 31, 2018
Net income including noncontrolling interests	$ 202,632	$ 196,042	$ 196,278	$ 314,775	$ 398,674	$ 511,053
Less net income for noncontrolling interests	(224)		0		(224)	0
Net income attributable to TD Group	202,408		196,278		398,450	511,053
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	(12,921)	(11,228)	23,036	5,152	(24,149)	28,188
Unrealized (loss) gain on derivatives	(63,254)	$ (73,865)	45,226	$ 18,248	(137,119)	63,474
Pensions and other postretirement benefits adjustments	131		0		131	0
Other comprehensive (loss) income, net of tax, attributable to TD Group	(76,044)		68,262		(161,137)	91,662
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO TD GROUP	$ 126,364		$ 264,540		$ 237,313	$ 602,715

Condensed Consolidated Statem_3

Condensed Consolidated Statement of Changes in Stockholders' Deficit - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive (Loss) Income	Treasury Stock	Noncontrolling Interest
BALANCE (in shares) at Sep. 30, 2017		56,093,659
BALANCE (in shares) at Sep. 30, 2017						(4,159,207)
BALANCE at Sep. 30, 2017	$ (2,951,204)	$ 561	$ 1,095,319	$ (3,187,220)	$ (85,143)	$ (774,721)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accrued unvested dividend equivalents and other	(4,509)			(4,509)
Compensation expense recognized for employee stock options	10,533		10,533
Exercise of employee stock options, restricted stock activity and other, net (in shares)		189,082
Exercise of employee stock options	7,292	$ 2	7,290
Net income				314,775
Net income including noncontrolling interests	314,775
Foreign currency translation adjustments, net of tax	5,152				5,152
Unrealized (loss) gain on derivatives, net of tax	18,248				18,248
BALANCE (in shares) at Dec. 30, 2017		56,282,741
BALANCE (in shares) at Dec. 30, 2017						(4,159,207)
BALANCE at Dec. 30, 2017	(2,599,713)	$ 563	1,113,142	(2,876,954)	(61,743)	$ (774,721)
BALANCE (in shares) at Sep. 30, 2017		56,093,659
BALANCE (in shares) at Sep. 30, 2017						(4,159,207)
BALANCE at Sep. 30, 2017	(2,951,204)	$ 561	1,095,319	(3,187,220)	(85,143)	$ (774,721)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	511,053
Net income including noncontrolling interests	511,053
Foreign currency translation adjustments, net of tax	28,188
Unrealized (loss) gain on derivatives, net of tax	63,474
Pensions and other postretirement benefit adjustments, net of tax	0
BALANCE (in shares) at Mar. 31, 2018		56,513,989
BALANCE (in shares) at Mar. 31, 2018						(4,161,326)
BALANCE at Mar. 31, 2018	(2,309,337)	$ 565	1,143,715	(2,684,832)	6,519	$ (775,304)
BALANCE (in shares) at Dec. 30, 2017		56,282,741
BALANCE (in shares) at Dec. 30, 2017						(4,159,207)
BALANCE at Dec. 30, 2017	(2,599,713)	$ 563	1,113,142	(2,876,954)	(61,743)	$ (774,721)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accrued unvested dividend equivalents and other	(4,156)			(4,156)
Compensation expense recognized for employee stock options	11,409		11,409
Exercise of employee stock options, restricted stock activity and other, net (in shares)		230,743				(2,119)
Exercise of employee stock options	18,434	$ 2	19,015			$ (583)
Stock Issued During Period, Shares, New Issues		505
Stock Issued During Period, Value, New Issues	149		149
Net income	196,278			196,278
Net income including noncontrolling interests	196,278
Foreign currency translation adjustments, net of tax	23,036				23,036
Unrealized (loss) gain on derivatives, net of tax	45,226				45,226
Pensions and other postretirement benefit adjustments, net of tax	0
BALANCE (in shares) at Mar. 31, 2018		56,513,989
BALANCE (in shares) at Mar. 31, 2018						(4,161,326)
BALANCE at Mar. 31, 2018	(2,309,337)	$ 565	1,143,715	(2,684,832)	6,519	$ (775,304)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
NONCONTROLLING INTEREST	0						$ 0
Total stockholders' deficit	$ (1,808,471)
BALANCE (in shares) at Sep. 30, 2018	56,895,686	56,895,686
BALANCE (in shares) at Sep. 30, 2018	(4,161,326)					(4,161,326)
BALANCE at Sep. 30, 2018	$ (1,808,471)	$ 569	1,208,742	(2,246,578)	4,100	$ (775,304)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect on Retained Earnings, Net of Tax | Accounting Standards Update 2014-09	3,284			3,284
Cumulative Effect on Retained Earnings, Net of Tax | Accounting Standards Update 2016-16	(353)			(353)
Accrued unvested dividend equivalents and other	(3,122)			(3,122)
Compensation expense recognized for employee stock options	16,645		16,645
Exercise of employee stock options, restricted stock activity and other, net (in shares)		109,695
Exercise of employee stock options	14,175	$ 1	14,174
Net income				196,042
Net income including noncontrolling interests	196,042
Foreign currency translation adjustments, net of tax	(11,228)				(11,228)
Unrealized (loss) gain on derivatives, net of tax	(73,865)				(73,865)
BALANCE (in shares) at Dec. 29, 2018		57,005,381
BALANCE (in shares) at Dec. 29, 2018						(4,161,326)
BALANCE at Dec. 29, 2018	$ (1,666,893)	$ 570	1,239,561	(2,050,727)	(80,993)	$ (775,304)
BALANCE (in shares) at Sep. 30, 2018	56,895,686	56,895,686
BALANCE (in shares) at Sep. 30, 2018	(4,161,326)					(4,161,326)
BALANCE at Sep. 30, 2018	$ (1,808,471)	$ 569	1,208,742	(2,246,578)	4,100	$ (775,304)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect on Retained Earnings, Net of Tax | Accounting Standards Update 2014-09				3,284
Exercise of employee stock options, restricted stock activity and other, net (in shares)						0
Exercise of employee stock options						$ 0
Net income	398,450
Net income including noncontrolling interests	398,674
Foreign currency translation adjustments, net of tax	(24,149)
Unrealized (loss) gain on derivatives, net of tax	(137,119)
Pensions and other postretirement benefit adjustments, net of tax	$ 131
BALANCE (in shares) at Mar. 30, 2019	57,304,097	57,304,097
BALANCE (in shares) at Mar. 30, 2019	(4,161,326)					(4,161,326)
BALANCE at Mar. 30, 2019	$ (1,491,778)	$ 573	1,291,103	(1,851,113)	(157,037)	$ (775,304)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
NONCONTROLLING INTEREST							0
BALANCE (in shares) at Dec. 29, 2018		57,005,381
BALANCE (in shares) at Dec. 29, 2018						(4,161,326)
BALANCE at Dec. 29, 2018	(1,666,893)	$ 570	1,239,561	(2,050,727)	(80,993)	$ (775,304)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Acquisition of business	9,307						9,307
Accrued unvested dividend equivalents and other	(2,794)			(2,794)
Compensation expense recognized for employee stock options	18,381		18,381
Exercise of employee stock options, restricted stock activity and other, net (in shares)		298,240
Exercise of employee stock options	32,955	$ 3	32,952
Stock Issued During Period, Shares, New Issues		476
Stock Issued During Period, Value, New Issues	209		209
Net income	202,408			202,408
Net income including noncontrolling interests	202,632
Net Income (Loss) from Noncontrolling Interest							224
Foreign currency translation adjustments, net of tax	(12,921)				(12,921)
Unrealized (loss) gain on derivatives, net of tax	(63,254)				(63,254)
Pensions and other postretirement benefit adjustments, net of tax	$ 131				131
BALANCE (in shares) at Mar. 30, 2019	57,304,097	57,304,097
BALANCE (in shares) at Mar. 30, 2019	(4,161,326)					(4,161,326)
BALANCE at Mar. 30, 2019	$ (1,491,778)	$ 573	$ 1,291,103	$ (1,851,113)	$ (157,037)	$ (775,304)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
NONCONTROLLING INTEREST	9,531						$ 9,531
Total stockholders' deficit	$ (1,482,247)

Condensed Consolidated Statem_4

Condensed Consolidated Statement of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
OPERATING ACTIVITIES:
Net income from continuing operations including noncontrolling interests	$ 398,674	$ 511,053
Net loss from discontinued operations	0	2,798
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	32,627	26,727
Amortization of intangible assets	43,599	34,882
Amortization of debt issuance costs, original issue discount and premium	13,286	10,594
Refinancing costs	3,434	1,751
Non-cash equity compensation	38,273	22,703
Deferred income taxes	(7,519)	(166,592)
Changes in assets/liabilities, net of effects from acquisitions of businesses:
Trade accounts receivable	(7,226)	5,864
Inventories	(45,151)	(16,337)
Income taxes receivable/payable	15,765	26,648
Other assets	(53,826)	(8,803)
Accounts payable	1,147	(624)
Accrued interest	27,554	883
Accrued and other liabilities	(7,640)	2,137
Net cash provided by operating activities	452,997	453,684
INVESTING ACTIVITIES:
Capital expenditures	(43,404)	(30,884)
Payments made in connection with acquisitions, net of cash acquired	(3,569,378)	(50,320)
Proceeds in connection with the sale of discontinued operations	0	57,686
Net cash used in investing activities	(3,612,782)	(23,518)
FINANCING ACTIVITIES:
Proceeds from exercise of stock options	47,126	26,305
Dividend equivalent payments	(24,309)	(56,148)
Proceeds from term loans, net	0	793,042
Repayments on term loans	(38,214)	(833,052)
Cash tender and redemption of senior subordinated notes due 2020	550,000	0
Proceeds from senior subordinated notes due 2027, net	544,578	0
Proceeds from senior secured notes due 2026, net	3,937,398	0
Financing fees and other	(1,753)	(2,155)
Net cash provided by (used in) financing activities	3,914,826	(72,008)
EFFECT OF EXCHANGE RATE CHANGES ON CASH, CASH EQUIVALENTS AND RESTRICTED CASH	844	2,288
NET INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	755,885	360,446
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	2,073,017	650,561
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD	2,828,902	1,011,007
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid during the period for interest	364,511	310,949
Cash paid during the period for income taxes	$ 120,715	$ 56,606

DESCRIPTION OF THE BUSINESS

DESCRIPTION OF THE BUSINESS	6 Months Ended
	Mar. 30, 2019
Accounting Policies [Abstract]
DESCRIPTION OF THE BUSINESS	DESCRIPTION OF THE BUSINESS Description of the Business – TransDigm Group Incorporated (“TD Group”), through its wholly-owned subsidiary, TransDigm Inc., is a leading global designer, producer and supplier of highly engineered aircraft components for use on nearly every commercial and military aircraft in service today. TransDigm Inc., along with TransDigm Inc.’s direct and indirect wholly-owned operating subsidiaries (collectively, with TD Group, the “Company” or “TransDigm”), offers a broad range of proprietary aerospace components. TD Group has no significant assets or operations other than its 100% ownership of TransDigm Inc. TD Group’s common stock is listed on the New York Stock Exchange, or the NYSE, under the trading symbol “TDG.” TransDigm's major product offerings, substantially all of which are ultimately provided to end-users in the aerospace industry, include mechanical/electro-mechanical actuators and controls, ignition systems and engine technology, specialized pumps and valves, power conditioning devices, specialized AC/DC electric motors and generators, NiCad batteries and chargers, engineered latching and locking devices, rods and locking devices, engineered connectors and elastomers, databus and power controls, cockpit security components and systems, specialized cockpit displays, aircraft audio systems, specialized lavatory components, seat belts and safety restraints, engineered interior surfaces and related components, lighting and control technology, military personnel parachutes, high performance hoists, winches and lifting devices, and cargo loading, handling and delivery systems.

UNAUDITED INTERIM FINANCIAL INF

UNAUDITED INTERIM FINANCIAL INFORMATION	6 Months Ended
	Mar. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
UNAUDITED INTERIM FINANCIAL INFOMRATION	UNAUDITED INTERIM FINANCIAL INFORMATION The financial information included herein is unaudited; however, the information reflects all adjustments (consisting of normal recurring adjustments) that are, in the opinion of management, necessary for a fair presentation of the Company’s financial position and results of operations and cash flows for the interim periods presented. These financial statements and notes should be read in conjunction with the financial statements and related notes for the year ended September 30, 2018 included in TD Group’s Form 10-K filed on November 9, 2018. As disclosed therein, the Company’s annual consolidated financial statements were prepared in conformity with generally accepted accounting principles in the United States (“GAAP”). The September 30, 2018 condensed consolidated balance sheet was derived from TD Group’s audited financial statements. The results of operations for the twenty-six week period ended March 30, 2019

ACQUISITIONS AND DIVESTITURES

ACQUISITIONS AND DIVESTITURES	6 Months Ended
	Mar. 30, 2019
Business Combinations [Abstract]
ACQUISITIONS	ACQUISITIONS AND DIVESTITURES During the twenty-six week period ended March 30, 2019 , the Company completed the acquisitions of Esterline and substantially all of the assets and technical data rights of NavCom Defense Electronics ("NavCom"). During the fiscal year ended September 30, 2018 , the Company completed the acquisitions of Skandia Inc. ("Skandia"), Extant, and the Kirkhill elastomers business ("Kirkhill"). The Company accounted for the acquisitions using the acquisition method and included the results of operations of the acquisitions in its condensed consolidated financial statements from the effective date of each acquisition. As of March 30, 2019 , the one-year measurement period is open for Esterline, NavCom, Skandia and Extant; therefore, the assets acquired and liabilities assumed related to these acquisitions are subject to adjustment until the end of their respective one-year measurement periods. The Company is in the process of obtaining a third-party valuation of certain intangible assets and tangible assets of Esterline and Skandia. Pro forma net sales and results of operations for the Esterline acquisition are provided in the Esterline section below. The pro forma information presents consolidated financial information as if Esterline had been acquired at the beginning of fiscal year 2018 on October 1, 2017 . Pro forma net sales and results of operations for the acquisitions, other than Esterline, had they occurred at the beginning of the applicable twenty-six week period ended March 30, 2019 or March 31, 2018 are not material and, accordingly, are not provided. The acquisitions strengthen and expand the Company’s position to design, produce and supply highly engineered proprietary aerospace components in niche markets with significant aftermarket content and provide opportunities to create value through the application of our three core value-driven operating strategies (obtaining profitable new business, improving our cost structure, and providing highly engineered value-added products to customers). The purchase price paid for each acquisition reflects the current earnings before interest, taxes, depreciation and amortization (EBITDA) and cash flows, as well as the future EBITDA and cash flows expected to be generated by the business, which are driven in most cases by the recurring aftermarket consumption over the life of a particular aircraft, estimated to be approximately 25 to 30 years . Esterline – On March 14, 2019, TransDigm completed the acquisition of all the outstanding stock of Esterline for $122.50 per share in cash, plus the payoff of Esterline debt. The purchase price, net of cash acquired of approximately $398.2 million , totaled approximately $3,923.9 million . Of the $3,923.9 million purchase price, $3,536.3 million was paid at closing and the remaining $387.6 million was classified as restricted cash at March 30, 2019 for the redemption of the outstanding senior notes due 2023 (herein the "2023 Notes"). The 2023 Notes were redeemed on April 15, 2019. Refer to Note 9, "Debt," for additional information. Esterline, through its subsidiaries, is an industry leader in specialized manufacturing for the aerospace and defense industry, including significant aftermarket exposure, primarily within three core disciplines - advanced materials, avionics and controls and sensors and systems. The acquisition of Esterline expands TransDigm's platform of proprietary and sole source content for the aerospace and defense industry. Esterline has been identified as a separate segment at March 30, 2019 . Refer to Note 13, "Segments," for additional information about Esterline's products and the Company's segments. The total purchase price of Esterline was allocated to the underlying assets acquired and liabilities assumed based upon management’s estimated fair values at the date of acquisition. To the extent the purchase price exceeded the estimated fair value of the net identifiable tangible and intangible assets acquired, such excess was allocated to goodwill. The preliminary allocation of the fair value of the Esterline acquisition is summarized in the table below (presented in thousands). Allocations are based on the acquisition method of accounting and in-process third-party valuation appraisals. Given the timing and complexity of the Esterline acquisition, the allocation of the purchase price is preliminary and will likely change in future periods, perhaps materially, as fair value estimates of the assets acquired and liabilities assumed are refined and finalized during the allowable one year measurement period. Except where otherwise noted in the Notes to Condensed Consolidated Financial Statements, changes in balances and activity where comparable periods are presented in the condensed consolidated financial statements were generally driven by the Esterline acquisition. Assets acquired: Current assets, excluding cash acquired $ 1,482,442 Property, plant, and equipment 338,990 Other intangible assets 992,000 Goodwill 2,431,180 Other 49,710 Total assets acquired 5,294,322 Liabilities assumed: Current liabilities 843,653 Other noncurrent liabilities 526,819 Total liabilities assumed 1,370,472 Net assets acquired $ 3,923,850 The Company currently expects that the approximately $2.4 billion of goodwill and $1.0 billion of other intangible assets recognized for the acquisition will not be deductible for tax purposes. The Company's net sales and income from continuing operations for the thirteen and twenty-six week periods ended March 30, 2019 include net sales of $122.0 million and income from continuing operations before tax of $7.5 million related to the Esterline acquisition. Net income from continuing operations for the thirteen and twenty-six week periods ended March 30, 2019 includes approximately $3.5 million of other intangible asset amortization expense and $14.9 million of inventory step-up amortization expense in cost of sales, respectively. Acquisition costs were expensed as incurred. In fiscal 2019, approximately $22.0 million of acquisition-related costs have been incurred. These costs were recorded in selling and administrative expenses within the condensed consolidated statements of income. In connection with the financing of the Esterline acquisition, approximately $24.5 million of net interest expense (comprised of gross interest expense of $32.7 million and interest income of $8.2 million ) has been recorded in fiscal 2019. The following pro forma information presents consolidated financial information as if Esterline had been acquired at the beginning of fiscal year 2018 on October 1, 2017 . Interest expense has been adjusted as though the debt incurred to finance the Esterline acquisition had been outstanding at October 1, 2017 . Each quarter presented includes other intangible asset amortization expense of approximately $21.2 million resulting from the preliminary purchase accounting. The full $118.7 million of inventory step-up amortization resulting from the preliminary purchase accounting asset step-up has been included in the fiscal year 2018 pro forma results to reflect the pro forma transaction date of October 1, 2017 , and thus the inventory step-up amortization expense of $14.9 million recorded in the thirteen and twenty-six week periods ended March 30, 2019 has been excluded. The unaudited pro forma consolidated financial information does not necessarily reflect the actual results that would have occurred had the acquisition taken place on October 1, 2017 , nor is it meant to be indicative of future results of operations of the combined companies under the ownership and operation of the Company. (Amounts in thousands, except per share amounts) Thirteen Week Periods Ended Twenty-Six Week Periods Ended March 30, 2019 March 31, 2018 March 30, 2019 March 31, 2018 Net sales $ 1,589,314 $ 1,448,515 $ 3,065,341 $ 2,776,082 Income from continuing operations including noncontrolling interests $ 201,754 $ 156,350 $ 387,338 $ 214,189 Net earnings per share attributable to TD Group stockholders from continuing operations - basic and diluted $ 3.59 $ 2.81 $ 6.45 $ 2.84 NavCom – On October 1, 2018, the Company's Extant subsidiary completed the acquisition of substantially all of the assets and technical data rights from the Corona, California operations of NavCom for approximately $27 million in cash. NavCom develops, manufactures, and supports high-reliability, mission-critical electronics, avionics and sub-assemblies. NavCom is included as a product line of Extant, which is included in TransDigm's Power and Control segment. The Company expects that approximately $9 million of goodwill recognized for the acquisition will be deductible for tax purposes over 15 years. Skandia – On July 13, 2018, the Company acquired all of the outstanding stock of Skandia for a total purchase price of approximately $84.3 million , which includes a $0.2 million working capital settlement paid in the fourth quarter of fiscal 2018. Skandia provides highly engineered seating foam, foam fabrication, flammability testing and acoustic solutions for the business jet market. Skandia is included as a product line within an existing reporting unit in TransDigm's Airframe segment. The Company expects that no goodwill recognized for the acquisition will be deductible for tax purposes. Extant – On April 24, 2018, the Company acquired all of the outstanding stock of Extant for a total purchase price of approximately $534.6 million in cash, which is net of a $0.2 million working capital settlement received in the third quarter of fiscal 2018. Extant provides a broad range of proprietary aftermarket products and repair and overhaul services to the aerospace and defense end markets. Extant is included in TransDigm's Power and Control segment. Prior to the Company's acquisition of Extant, Extant was owned by an equity fund sponsored by Warburg Pincus LLC. Michael Graff, a director of TransDigm, is a managing director of Warburg Pincus LLC and was chairman of the board of Extant. Robert Henderson, Vice Chairman of TransDigm, was also on the board of Extant and owned less than 2% of Extant on a fully diluted basis. In addition, Mr. Graff, Mr. W. Nicholas Howley, TransDigm's Executive Chairman, and Messrs. Douglas Peacock and David Barr, directors of TransDigm, each had minority interests of less than 1% in the Warburg Pincus LLC fund that owned Extant. The total purchase price of Extant was allocated to the underlying assets acquired and liabilities assumed based upon management’s estimated fair values at the date of acquisition. To the extent the purchase price exceeded the estimated fair value of the net identifiable tangible and intangible assets acquired, such excess was allocated to goodwill. The following table summarizes the purchase price allocation of the estimated fair values of the assets acquired and liabilities assumed at the transaction date (presented in thousands). Assets acquired: Current assets, excluding cash acquired $ 53,698 Property, plant, and equipment 4,103 Other intangible assets 105,000 Goodwill 406,673 Total assets acquired 569,474 Liabilities assumed: Current liabilities 9,876 Other noncurrent liabilities 25,028 Total liabilities assumed 34,904 Net assets acquired $ 534,570 Approximately $44 million of the $105 million other intangible assets recognized for the acquisition is deductible for tax purposes over 15 years. Of the $407 million of goodwill recognized for the acquisition, none is deductible for tax purposes. Kirkhill – On March 15, 2018, the Company acquired the assets and certain liabilities of the Kirkhill elastomers business from Esterline for a total purchase price of approximately $49.3 million , which is net of a $0.6 million working capital settlement received in the third quarter of fiscal 2018. Kirkhill's products are primarily proprietary, sole source with significant aftermarket content and used in a broad variety of most major commercial transport and military platforms. Kirkhill is included in TransDigm's Airframe segment. No goodwill recognized for the acquisition is deductible for tax purposes. Schroth – On February 22, 2017, the Company acquired all of the outstanding stock of Schroth Safety Products GmbH and certain aviation and defense assets and liabilities from subsidiaries of Takata Corporation (collectively, "Schroth"), for a total purchase price of approximately $89.7 million , which consisted primarily of $79.7 million paid in cash during fiscal 2017 and an approximately $9.0 million indemnity holdback, of which $8.5 million was paid in April 2018 and $0.5 million remains a reserve as of March 30, 2019 . In connection with the settlement of a Department of Justice investigation into the competitive effects of the acquisition, during the fourth quarter of fiscal 2017, the Company committed to dispose of the Schroth business. Therefore, Schroth was classified as held-for-sale beginning in the fourth quarter of fiscal 2017 and the results of operations of were reflected as discontinued operations in the consolidated financial statements. On January 26, 2018, the Company completed the sale of Schroth in a management buyout to a private equity fund and certain members of Schroth management for approximately $61.4 million , which included a working capital adjustment of $0.3 million that was paid in July 2018. There was no activity from discontinued operations in the thirteen and twenty-six week period ended March 30, 2019 . Loss from discontinued operations was $5.6 million and $2.8 million in the condensed consolidated statements of income for the thirteen and twenty-six week periods ended March 31, 2018 , respectively, which is summarized as follows (amounts in thousands): Thirteen Week Period Ended Twenty-Six Week Period Ended March 31, 2018 March 31, 2018 Net sales $ 2,679 $ 11,808 (Loss) Income from discontinued operations before income taxes (456 ) 354 Income tax benefit 62 2,016 (Loss) Income from discontinued operations, net of tax (394 ) 2,370 Net loss on sale of discontinued operations, net of tax (5,168 ) (5,168 ) Loss from discontinued operations $ (5,562 ) $ (2,798 )

RECENT ACCOUNTING PRONOUNCEMENT

RECENT ACCOUNTING PRONOUNCEMENTS	6 Months Ended
	Mar. 30, 2019
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
RECENT ACCOUNTING PRONOUNCEMENTS	RECENT ACCOUNTING PRONOUNCEMENTS In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-09, which created a new topic in the Accounting Standards Codification (“ASC”) 606, “Revenue from Contracts with Customers.” In addition to superseding and replacing nearly all existing U.S. GAAP revenue recognition guidance, including industry-specific guidance, ASC 606 requires an entity to recognize revenue in a manner that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard also specifies the accounting of some costs to obtain or fulfill a contract with a customer and expands the disclosure requirements around contracts with customers. The Company adopted this standard in the first quarter of 2019 using the modified retrospective method. The adoption of this standard did not have a material impact on our consolidated results of operations, financial position or cash flows. Refer to Note 5, "Revenue Recognition," for additional disclosures relating to ASC 606. In February 2016, the FASB issued ASU 2016-02, “Leases (ASC 842),” which will require that a lessee recognize assets and liabilities on the balance sheet for all leases with a lease term of more than twelve months, with the result being the recognition of a right of use asset and a lease liability. Additionally, in July 2018, the FASB issued ASU 2018-10, "Codification Improvements to ASC 842, Leases" which provides narrow amendments to clarify how to apply certain aspects of the new leases standard. The new leases standard guidance is effective for the Company for annual reporting periods, including interim periods therein, beginning October 1, 2019, with early adoption permitted. The Company is currently evaluating the impact of adopting this standard on our consolidated financial statements and disclosures. We are planning to adopt ASC 842 on October 1, 2019 using the modified retrospective optional transition method, in which case prior periods presented will not be restated. Also, we intend to elect the package of practical expedients, which among other things, permits us to not reassess the identification, classification and initial direct costs of leases commencing before the October 1, 2019 effective date. In June 2016, the FASB issued ASU 2016-13, "Financial Instruments—Credit Losses: Measurement of Credit Losses on Financial Instruments (ASU 2016-13)," which changes the impairment model for most financial assets. The new model uses a forward-looking expected loss method, which will generally result in earlier recognition of allowances for losses. ASU 2016-13 is effective for annual and interim periods beginning after December 15, 2019 and early adoption is permitted for annual and interim periods beginning after December 15, 2018. The Company is currently evaluating the impact of adopting this standard on our consolidated financial statements and disclosures. In October 2016, the FASB issued ASU 2016-16, “Intra-Entity Transfers of Assets Other Than Inventory” (ASU 2016-16). This accounting standard requires companies to recognize the income tax effects of intercompany sales and transfers of assets, other than inventory, in the period in which the transfer occurs. Under previous guidance companies were required to defer the income tax effects of intercompany transfers of assets by recording prepaid taxes, until such assets were sold to an outside party or otherwise recognized. Current guidance requires companies to write off any income tax amounts previously deferred as prepaid taxes from past intercompany transactions, and to record deferred tax balances for amounts not previously recognized, through a cumulative-effect adjustment to retained earnings. ASU 2016-16 is effective for public business entities for fiscal years beginning after December 15, 2017, including interim periods within those years. The Company adopted this standard in the first quarter of fiscal 2019. The adoption of this standard did not have a material impact on our consolidated financial statements. Refer to the condensed consolidated statements of stockholders' deficit for the impact of the adoption of ASU 2016-16 on retained earnings. In January 2017, the FASB issued ASU 2017-04, “Simplifying the Test for Goodwill Impairment,” to eliminate Step 2 from the goodwill impairment test in order to simplify the subsequent measurement of goodwill. The guidance is effective for fiscal years beginning after December 15, 2019, with early adoption permitted. The adoption of this standard is not expected to have a material impact on our consolidated financial statements and disclosures. In March 2017, the FASB issued ASU 2017-07, "Compensation—Retirement Benefits (ASC 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost," that changes how employers that sponsor defined benefit and/or other postretirement benefit plans present the net periodic benefit cost in the income statement. Under previous guidance, companies included all components of the net periodic benefit costs in the same lines as the service cost component. Current guidance requires employers to present the other components of the net periodic benefit costs separately from the line items that include the service cost and outside of any subtotal of operating income. In addition, only the service cost component will be eligible for capitalization in assets. Employers will have to disclose the lines used to present the other components of net periodic benefit cost, if the components are not presented separately in the income statement. The standard is effective for public business entities for fiscal years beginning after December 15, 2017, and interim periods within the fiscal year. The Company adopted this standard in the first quarter of fiscal 2019. The adoption of this standard did not have a material impact on our consolidated financial statements. In May 2017, the FASB issued ASU 2017-09, "Compensation—Stock Compensation (ASC 718): Scope of Modification Accounting," which provides clarity on which changes to the terms or conditions of share-based payment awards require an entity to apply the modification accounting provisions required in ASC 718. The standard is effective for all entities for annual periods beginning after December 15, 2017, with early adoption permitted, including adoption in any interim period for which financial statements have not yet been issued. The Company adopted this standard in the first quarter of fiscal 2019. The adoption of this standard did not have a material impact on our consolidated financial statements. In February 2018, the FASB issued ASU 2018-02, "Income Statement - Reporting Comprehensive Income (ASC 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income," which gives entities the option to reclassify tax effects stranded in accumulated other comprehensive income as a result of the Tax Cuts and Jobs Act (the "Act") into retained earnings. The guidance allows entities to reclassify from accumulated other comprehensive income to retained earnings stranded tax effects resulting from the Act's new federal corporate income tax rate. The guidance also allows entities to elect to reclassify other stranded tax effects that relate to the Act but do not directly relate to the change in the federal tax rate (e.g., state taxes, changing from a worldwide tax system to a territorial system). Tax effects that are stranded in accumulated other comprehensive income for other reasons (e.g., prior changes in tax law, a change in valuation allowance) may not be reclassified. The standard is effective for all entities for fiscal years beginning after December 15, 2018, and interim periods within the fiscal year. Early adoption is permitted, including adoption in any interim period for which financial statements have not yet been issued. Entities have the option to apply the guidance retrospectively or in the period of adoption. The adoption of this standard is not expected to have a material impact on our consolidated financial statements. In March 2018, the FASB issued ASU 2018-05, “Income Taxes (ASC 740), Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118.” The ASU adds various SEC paragraphs pursuant to the issuance of the December 2017 SEC Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act (“SAB 118”), which was effective immediately. The SEC issued SAB 118 to address concerns about reporting entities’ ability to timely comply with the accounting requirements to recognize all of the effects of the Tax Cuts and Jobs Act in the period of enactment. SAB 118 allowed disclosure that timely determination of some or all of the income tax effects from the Tax Cuts and Jobs Act were incomplete by the due date of the financial statements and if possible to provide a reasonable estimate. We have finalized our accounting for the tax effects of the Tax Cuts and Jobs Act under the guidance of SAB 118. Such finalization did not result in a material impact to the provisional tax effects previously recorded in our consolidated financial statements. In accordance with SEC Final Rule Release No. 33-10532, we have adopted Rule 3-04 of Regulation S-X during the first quarter of fiscal 2019 and have disclosed changes in the Condensed Consolidated Statements of Stockholders' Deficit for all periods presented.

REVENUE

REVENUE	6 Months Ended
	Mar. 30, 2019
Revenue Recognition [Abstract]
Revenue from Contract with Customer [Text Block]	REVENUE RECOGNITION The Company adopted ASC 606, “Revenue from Contracts with Customers,” beginning October 1, 2018 using the modified retrospective method. The new standard primarily impacted the Company's timing of revenue recognition for certain contracts and subcontracts with the U.S. government that contain termination for convenience clauses and resulted in an increase to retained earnings of $3.3 million . The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods. The cumulative effect of the changes made to our condensed consolidated balance sheet as of October 1, 2018 for the adoption of ASC 606 were as follows (in thousands): September 30, 2018 Adjustments due to ASC 606 October 1, 2018 Assets Unbilled receivables (1) $ 10,056 $ 8,272 $ 18,328 Inventories - Net 805,292 (3,977 ) 801,315 Liabilities and Stockholders' Deficit Deferred income taxes $ 399,496 $ 1,011 $ 400,507 Accumulated deficit (2,246,578 ) 3,284 (2,243,294 ) (1) Included in prepaid expenses and other on the condensed consolidated balance sheet. The impact of the adoption of ASC 606 on the condensed consolidated statements of income and condensed consolidated balance sheet was immaterial for the thirteen and twenty-six week period s ended March 30, 2019 . Accounting Policy —Revenue is recognized from the sale of products when control transfers to the customer, which is demonstrated by our right to payment, a transfer of title, a transfer of the risk and rewards of ownership, or the customer acceptance, but most frequently upon shipment where the customer obtains physical possession of the goods. The majority of the Company's revenue is recorded at a point in time. In some contracts the Company found that under ASC 606, control transferred to the customer over time primarily in contracts where the customer is required to pay for the cost of both the finished and unfinished goods at the time of cancellation plus a reasonable profit relative to the work performed for products that were customized for the customer. Upon adoption of ASC 606, we recognize revenue over time for those agreements that have a right to margin and where the products being produced have no alternative use. Prior to the adoption date, revenue related to these agreements was recognized when the goods were shipped; as a result of the adoption of ASC 606, a portion of our revenue may be earned in periods earlier than it would have been in prior years. The cumulative adjustment to retained earnings upon adoption, which is presented in the table above, represents those earnings that would have been recognized in the previous year had ASC 606 been in effect during that time. Based on our production cycle, it is generally expected that goods related to the revenue represented in that adjustment will be shipped and billed within the current year. For revenue recognized over time, we estimate the amount of revenue attributable to a contract earned at a given point during the production cycle based on certain costs, such as materials and labor incurred to date, plus the expected profit, which is a cost-to-cost input method. The Company’s payment terms vary by the type and location of the customer and the products or services offered. The Company does not offer any payment terms that would meet the requirements for consideration as a significant financing component under ASC 606. Shipping and handling fees and costs incurred in connection with products sold are recorded in cost of sales in the consolidated statements of income, and are not considered a performance obligation to our customers. The Company pays sales commissions that relate to contracts for products or services that are satisfied at a point in time or over a period of one year or less and so are recorded per the practical expedient expensed as incurred. These costs are reported as a component of selling and administrative expenses in the unaudited condensed consolidated statement of operations. We offer assurance type warranties on our products as well as separately sold warranty contracts. Revenue related to warranty contracts that are sold separately is recognized over the life of the warranty term. Variable consideration is estimated at the expected value (sum of the probability of weighted amounts) or most likely amount, whichever method is found to be most appropriate to estimate the consideration to which the Company will be entitled, and only to the extent it is probable that a subsequent change in estimate will not result in a significant revenue reversal when estimating the amount of revenue to recognize. Variable consideration is treated as a change to the sales transaction price and based largely on an assessment of all information (i.e., historical, current and forecasted) that is reasonably available to the Company. Variable consideration is estimated at contract inception and updated at the end of each reporting period as additional information becomes available. Contract Assets and Liabilities - Contract assets reflect revenue recognized and performance obligations satisfied in advance of customer billing or reimbursable costs related to a specific contract. Contract liabilities relate to payments received in advance of the satisfaction of performance under the contract. We receive payments from customers based on the terms established in our contracts. The following table summarizes our contract assets and liabilities balances (in thousands): March 30, 2019 October 1, 2018 Change Contract assets, current (1) $ 66,675 18,328 $ 48,347 Contract assets, non-current (2) 118 118 — Total contract assets 66,793 18,446 48,347 Contract liabilities, current (3) 6,920 2,742 4,178 Contract liabilities, non-current (4) — — — Total contract liabilities 6,920 2,742 4,178 Net contract assets $ 59,873 $ 15,704 $ 44,169 (1) Included in prepaid expenses and other on the condensed consolidated balance sheet. (2) Included in other non-current assets on the condensed consolidated balance sheet. (3) Included in accrued liabilities on the condensed consolidated balance sheet. (4) Included in other non-current liabilities on the condensed consolidated balance sheet. Changes in the contract asset and liability balances during the twenty-six week period ended March 30, 2019 were not materially impacted by any factors other than the Esterline acquisition. For the thirteen and twenty-six week period s ended March 30, 2019 , the revenue recognized that was previously included in the beginning balance of contract liabilities was immaterial.

EARNINGS PER SHARE (TWO-CLASS M

EARNINGS PER SHARE (TWO-CLASS METHOD)	6 Months Ended
	Mar. 30, 2019
Earnings Per Share [Abstract]
EARNINGS PER SHARE (TWO-CLASS METHOD)	EARNINGS PER SHARE The following table sets forth the computation of basic and diluted earnings per share (in thousands, except per share data) using the two-class method: Thirteen Week Periods Ended Twenty-Six Week Periods Ended March 30, 2019 March 31, 2018 March 30, 2019 March 31, 2018 Numerator for earnings per share: Income from continuing operations including noncontrolling interests $ 202,632 $ 201,840 $ 398,674 $ 513,851 Net income attributable to noncontrolling interests (224 ) — (224 ) — Net income from continuing operating attributable to TD Group 202,408 201,840 398,450 513,851 Less dividends paid on participating securities — — (24,309 ) (56,148 ) 202,408 201,840 374,141 457,703 Loss from discontinued operations, net of tax — (5,562 ) — (2,798 ) Net income applicable to TD Group common stock - basic and diluted $ 202,408 $ 196,278 $ 374,141 $ 454,905 Denominator for basic and diluted earnings per share under the two-class method: Weighted-average common shares outstanding 52,979 52,229 52,886 52,127 Vested options deemed participating securities 3,286 3,376 3,379 3,472 Total shares for basic and diluted earnings per share 56,265 55,605 56,265 55,599 Net earnings per share from continuing operations - basic and diluted $ 3.60 $ 3.63 $ 6.65 $ 8.23 Net loss per share from discontinued operations - basic and diluted — (0.10 ) — (0.05 ) Net earnings per share $ 3.60 $ 3.53 $ 6.65 $ 8.18

INVENTORIES

INVENTORIES	6 Months Ended
	Mar. 30, 2019
Inventory Disclosure [Abstract]
INVENTORIES	INVENTORIES Inventories are stated at the lower of cost or net realizable value. Cost of inventories is generally determined by the average cost and the first-in, first-out (FIFO) methods and includes material, labor and overhead related to the manufacturing process. Inventories consist of the following (in thousands): March 30, 2019 September 30, 2018 Raw materials and purchased component parts $ 811,829 $ 540,290 Work-in-progress 483,198 237,335 Finished goods 263,460 127,018 Total 1,558,487 904,643 Reserves for excess and obsolete inventory (105,443 ) (99,351 ) Inventories - Net $ 1,453,044 $ 805,292

INTANGIBLE ASSETS

INTANGIBLE ASSETS	6 Months Ended
	Mar. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
INTANGIBLE ASSETS	INTANGIBLE ASSETS Other intangible assets - net in the condensed consolidated balance sheets consist of the following (in thousands): March 30, 2019 September 30, 2018 Gross Carrying Amount Accumulated Amortization Net Gross Carrying Amount Accumulated Amortization Net Trademarks and trade names $ 1,037,533 $ — $ 1,037,533 $ 799,749 $ — $ 799,749 Technology 1,853,900 451,267 1,402,633 1,347,314 416,579 930,735 Order backlog 88,113 10,561 77,552 12,200 5,409 6,791 Customer relationships 215,986 17,013 198,973 62,561 14,277 48,284 Other 16,335 8,574 7,761 10,873 8,028 2,845 Total $ 3,211,867 $ 487,415 $ 2,724,452 $ 2,232,697 $ 444,293 $ 1,788,404 Intangible assets acquired during the twenty-six week period ended March 30, 2019 are summarized in the table below (in thousands). As disclosed in Note 3, "Acquisitions and Divestitures," the estimated fair value of the net identifiable tangible and intangible assets acquired are based on the acquisition method of accounting and are subject to adjustment upon completion of the third-party valuation appraisals. Material adjustments may occur. The fair value of the net identifiable tangible and intangible assets acquired will be finalized within the allowable one year measurement period. Gross Amount Amortization Period Intangible assets not subject to amortization: Goodwill $ 2,439,436 Trademarks and trade names 251,700 2,691,136 Intangible assets subject to amortization: Technology 509,500 20 years Order backlog 78,000 1.5 years Customer relationships 156,000 20 years 743,500 18 years Total $ 3,434,636 The aggregate amortization expense on identifiable intangible assets for the twenty-six week period s ended March 30, 2019 and March 31, 2018 was approximately $43.1 million and $34.6 million , respectively. The estimated amortization expense is $122.2 million for fiscal year 2019 , $154.2 million for fiscal year 2020 , and $104.2 million for each of the four succeeding fiscal years 2021 through 2024 . The following is a summary of changes in the carrying value of goodwill by segment from September 30, 2018 through March 30, 2019 (in thousands): Power & Control Airframe Non- aviation Esterline Total Balance - September 30, 2018 $ 3,677,683 $ 2,452,332 $ 93,275 $ — $ 6,223,290 Goodwill acquired during the year 8,256 — — 2,431,180 2,439,436 Purchase price allocation adjustments 2,967 — — — 2,967 Currency translation adjustment — (1,631 ) — (49,746 ) (51,377 ) Balance - March 30, 2019 $ 3,688,906 $ 2,450,701 $ 93,275 $ 2,381,434 $ 8,614,316

DEBT

DEBT	6 Months Ended
	Mar. 30, 2019
Debt Disclosure [Abstract]
DEBT	DEBT The Company’s debt consists of the following (in thousands): March 30, 2019 Gross Amount Debt Issuance Costs Original Issue Discount or Premium Net Amount Short-term borrowings—trade receivable securitization facility $ 300,000 $ (194 ) $ — $ 299,806 Term loans $ 7,561,718 $ (63,852 ) $ (19,122 ) $ 7,478,744 5.50% senior subordinated notes due 2020 (2020 Notes) — — — — 6.00% senior subordinated notes due 2022 (2022 Notes) 1,150,000 (4,781 ) — 1,145,219 3.625% senior notes due 2023 (2023 Notes) 370,425 (2,996 ) — 367,429 6.50% senior subordinated notes due 2024 (2024 Notes) 1,200,000 (6,278 ) — 1,193,722 6.50% senior subordinated notes due 2025 (2025 Notes) 750,000 (3,241 ) 3,363 750,122 6.375% senior subordinated notes due 2026 (6.375% 2026 Notes) 950,000 (7,294 ) — 942,706 6.875% senior subordinated notes due 2026 (6.875% 2026 Notes) 500,000 (5,511 ) (3,371 ) 491,118 6.25% secured notes due 2026 (2026 Secured Notes) 4,000,000 (62,479 ) 1,953 3,939,474 7.50% senior subordinated notes due 2027 (2027 Notes) 550,000 (5,312 ) — 544,688 Government refundable advances 38,663 — — 38,663 Capital lease obligations 65,458 — — 65,458 17,136,264 (161,744 ) (17,177 ) 16,957,343 Less current portion 451,738 (3,576 ) — 448,162 Long-term debt $ 16,684,526 $ (158,168 ) $ (17,177 ) $ 16,509,181 September 30, 2018 Gross Amount Debt Issuance Costs Original Issue Discount or Premium Net Amount Short-term borrowings—trade receivable securitization facility $ 300,000 $ (481 ) $ — $ 299,519 Term loans $ 7,599,932 $ (69,697 ) $ (21,030 ) $ 7,509,205 5.50% 2020 Notes 550,000 (2,187 ) — 547,813 6.00% 2022 Notes 1,150,000 (5,501 ) — 1,144,499 6.50% 2024 Notes 1,200,000 (6,866 ) — 1,193,134 6.50% 2025 Notes 750,000 (3,505 ) 3,636 750,131 6.375% 2026 Notes 950,000 (7,798 ) — 942,202 6.875% 2026 Notes 500,000 (5,616 ) (3,605 ) 490,779 12,699,932 (101,170 ) (20,999 ) 12,577,763 Less current portion 76,427 (610 ) — 75,817 Long-term debt $ 12,623,505 $ (100,560 ) $ (20,999 ) $ 12,501,946 Accrued interest, which is classified as a component of accrued liabilities, was $124.2 million and $96.6 million as of March 30, 2019 and September 30, 2018 , respectively. Issuance of Senior Secured Notes due 2026 – On January 30, 2019, the Company entered into a purchase agreement in connection with a private offering of $3.8 billion aggregate principal amount of 6.25% senior secured notes due 2026. In addition, on February 1, 2019, the Company entered into a purchase agreement in connection with a private offering of $200 million aggregate principal amount of 6.25% senior secured notes due 2026 (herein the "2026 Secured Notes"). All $4.0 billion aggregate principal amount of the 2026 Secured Notes constituted a single class and were issued under a single indenture. The notes in the $3.8 billion secured notes offering were issued at a price of 100% of their principal amount and the notes in the $200 million secured notes offering were issued at a price of 101% of their principal amount. The 2026 Secured Notes are guaranteed, with certain exceptions, by TransDigm Group, TransDigm UK and all of TransDigm Inc.’s existing U.S. subsidiaries on a senior secured basis. The 2026 Secured Notes bear interest at a rate of 6.25% per annum, which accrues from February 13, 2019 and is payable semiannually in arrears on March 15th and September 15th of each year, commencing on September 15, 2019. The 2026 Secured Notes mature on March 15, 2026, unless earlier redeemed or repurchased, and are subject to the terms and conditions set forth in the Secured Notes Indenture. In addition to the premium of $2.0 million capitalized upon the issuance of the $200 million issuance of the 2026 Senior Notes, the Company capitalized $63.9 million and expensed $0.7 million of debt issuance costs associated with the issuance of the 2026 Senior Secured Notes during the twenty-six week period ended March 30, 2019 . Issuance of Senior Subordinated Notes due 2027 – On February 1, 2019, the Company entered into a purchase agreement in connection with a private offering of $550 million in new 7.50% senior subordinated notes due 2027 (herein the "2027 Notes"). The 2027 Notes were issued pursuant to an indenture, dated as of February 13, 2019, among TransDigm, as issuer, TD Group, TD UK and the other subsidiaries of TransDigm named therein, as guarantors, and The Bank of New York Mellon Trust Company, N.A., as trustee. The 2027 Notes bear interest at the rate of 7.50% per annum, which accrues from February 13, 2019 and is payable in arrears on March 15th and September 15th of each year, commencing on September 15, 2019. The 2027 Notes mature on March 15, 2027, unless earlier redeemed or repurchased, and are subject to the terms and conditions set forth in the indenture. The Company capitalized $5.4 million of debt issuance costs associated with the 2027 Notes during the twenty-six week period ended March 30, 2019 . Repurchase of Senior Subordinated Notes due 2020 - On February 13, 2019, the Company announced a cash tender offer for any and all of its 2020 Notes outstanding. On March 15, 2019, the Company redeemed the principal amount of $550 million , plus accrued interest of approximately $12.6 million . The Company wrote off $1.7 million in unamortized debt issuance costs during the twenty-six week period ended March 30, 2019 in conjunction with the redemption of the 2020 Notes. Amendment No. 6 to the Second Amended and Restated Credit Agreement - On March 14, 2019, the Company entered into Amendment No. 6 to the Second Amended and Restated Credit Agreement (herein "Amendment No. 6"). Under the terms of Amendment No. 6, certain existing lenders increased the revolving commitments, including $52.1 million in multicurrency revolving commitments, in an aggregate principal amount of $160 million , to a total revolving commitments capacity of $760 million . The revolving commitments consist of two tranches which include up to $151.5 million of multicurrency revolving commitments. The terms and conditions that apply to the revolving credit facility, other than the additional revolving credit commitments, are substantially the same as the terms and conditions that applied to the revolving credit facility immediately prior to Amendment No. 6. At March 30, 2019 , the Company had $33.7 million in letters of credit outstanding, and $726.3 million of borrowings available under the revolving commitments, subject to restrictions under existing debt covenants. 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, which is a subsidiary of TransDigm (acquired via the Esterline acquisition). This obligation was assumed in connection with the Esterline acquisition and the balance was $38.7 million at March 30, 2019 . Obligations under Capital Leases - The Company leases certain buildings and equipment under capital leases. This obligation was assumed in connection with the Esterline acquisition and the present value of the minimum capital lease payments, net of the current portion, represents a balance of $65.5 million at March 30, 2019 . Repurchase of Senior Notes due 2023 - On March 14, 2019, in connection with the closing of the Esterline acquisition, the Company announced a cash tender offer for any and all of the outstanding senior notes due 2023 (herein the "2023 Notes"). The 2023 Notes were issued by Esterline in April 2015 and remained outstanding as of the acquisition date of Esterline by TransDigm. A notice of redemption with respect to the notes was given to each holder of the 2023 Notes, providing for the redemption of all outstanding notes on April 15, 2019 at the redemption price set forth in the related indenture. At March 30, 2019, the funds for the redemption of the 2023 Notes of approximately $387.6 million were held in trust and were committed to be used to redeem any and all of the 2023 Notes. The funds were restricted to the redemption of the 2023 Notes, and as such, are presented as restricted cash in the condensed consolidated balance sheet at March 30, 2019. On April 15, 2019, the Company redeemed the principal amount of approximately $373.8 million ( €330.0 million as the 2023 Notes were denominated in Euros), plus accrued interest of approximately $6.8 million , early redemption premium of $6.8 million and fees of approximately $0.2 million

INCOME TAXES

INCOME TAXES	6 Months Ended
	Mar. 30, 2019
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES At the end of each reporting period, TD Group makes an estimate of its annual effective income tax rate. The estimate used in the year-to-date period may change in subsequent periods. During the thirteen week periods ended March 30, 2019 and March 31, 2018 , the effective income tax rate was 24.2% and 18.3% , respectively. During the twenty-six week periods ended March 30, 2019 and March 31, 2018 , the effective income tax rate was 22.9% and (17.3)% , respectively. The Company's higher effective tax rate for the thirteen week period ended March 30, 2019 was primarily due to a net interest expense limitation under IRC Section 163(j) resulting from the provisions of The Tax Cuts and Jobs Act enacted on December 22, 2017 (the "Act"). The Company's higher effective tax rate for the twenty-six week period ended March 30, 2019 was primarily due to the discrete benefit recognized in the twenty-six week period ended March 31, 2018 related to the remeasurement of deferred tax balances resulting from certain provisions of the Act. The Company’s effective tax rate for the thirteen and twenty-six week periods ended March 30, 2019 was higher than the Federal statutory rate of 21% primarily resulting from a net interest expense limitation under IRC Section 163(j) offset by the benefit associated with the deduction for foreign-derived intangible income (FDII) and excess tax benefits for share-based payments. The Company’s effective tax rate for the thirteen and twenty-six week periods ended March 31, 2018 was less than the Federal statutory tax rate primarily due to the discrete adjustment related to the enactment of the Act described above. FDII was introduced, and interest deductibility under IRC Section 163(j) was modified by the Act and were both effective for TD Group beginning October 1, 2018. The Act subjects a U.S. corporation to a tax on its Global Intangible Low-Taxed Income (GILTI). The FASB Staff Q&A, Topic 740, No. 5, Accounting for Global Intangible Low-Taxed Income, states that a Company can make an accounting policy election to either treat such inclusion as a current period expense or to factor such amounts into the measurement of deferred taxes. The Company has elected to recognize the resulting tax on GILTI as a period expense in the period the tax is incurred and has not reflected any corresponding deferred taxes associated with GILTI in the condensed consolidated financial statements. The Company and its subsidiaries file income tax returns in the U.S. federal jurisdiction and various state, local and foreign jurisdictions. The Company is currently under audit in Belgium for fiscal years 2016 through 2018, in France for fiscal years 2015 through 2017, and in Germany for fiscal years 2012 through 2015. The Company is no longer subject to U.S. federal examinations for years before fiscal year 2014. The fiscal year 2014 U.S. federal income tax return is currently under review by the Appeals Office of the Internal Revenue Service. In addition, the Company is subject to state income tax examinations for fiscal years 2011 and later. At March 30, 2019 and September 30, 2018 , TD Group had $20.4 million and $14.1 million in unrecognized tax benefits, the recognition of which would have an effect of approximately $18.6 million and $13.1 million on the effective tax rate at March 30, 2019 and September 30, 2018 , respectively. The Company believes the tax positions that comprise the unrecognized tax benefits will be reduced by approximately $2.3 million

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	6 Months Ended
	Mar. 30, 2019
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS The following table presents our assets and liabilities that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy. The fair value hierarchy has three levels based on the reliability of the inputs used to determine fair value. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs are quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, and inputs (other than quoted prices) that are observable for the asset or liability, either directly or indirectly. Level 3 inputs are unobservable inputs for the asset or liability. A financial asset or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The following summarizes the carrying amounts and fair values of financial instruments (in thousands): March 30, 2019 September 30, 2018 Level Carrying Amount Fair Value Carrying Amount Fair Value Assets: Cash and cash equivalents 1 $ 2,441,336 $ 2,441,336 $ 2,073,017 $ 2,073,017 Restricted cash 1 387,566 387,566 — — Interest rate cap agreements (1) 2 9,353 9,353 36,160 36,160 Interest rate swap agreements (2) 2 6,569 6,569 11,634 11,634 Interest rate swap agreements (1) 2 597 597 61,126 61,126 Foreign currency forward exchange contracts and other (2) 2 2,352 2,352 — — Foreign currency forward exchange contracts and other (1) 2 2,433 2,433 — — Liabilities: Interest rate swap agreements (3) 2 1,160 1,160 528 528 Interest rate swap agreements (4) 2 86,128 86,128 142 142 Foreign currency forward exchange contracts and other (3) 2 12,129 12,129 — — Foreign currency forward exchange contracts and other (4) 2 1,754 1,754 — — Short-term borrowings - trade receivable securitization facility (5) 1 299,806 299,806 299,519 299,519 Long-term debt, including current portion: Term loans (5) 2 7,478,744 7,344,009 7,509,205 7,607,323 5.50% 2020 Notes (5) 1 — — 547,813 548,625 6.00% 2022 Notes (5) 1 1,145,219 1,165,813 1,144,499 1,155,750 3.625% 2023 Notes (5) 1 367,429 370,425 — — 6.50% 2024 Notes (5) 1 1,193,722 1,230,000 1,193,134 1,215,000 6.50% 2025 Notes (5) 1 750,122 757,500 750,131 757,500 6.375% 2026 Notes (5) 1 942,706 938,125 942,202 942,875 6.875% 2026 Notes (5) 1 491,118 496,250 490,779 507,500 6.25% 2026 Notes (5) 1 3,939,474 4,130,000 — — 7.50% 2027 Notes (5) 1 544,688 562,375 — — Government Refundable Advances 2 38,663 38,663 — — Capital Lease Obligations 2 65,458 65,458 — — (1) Included in other non-current assets on the condensed consolidated balance sheets. (2) Included in prepaid expenses and other on the condensed consolidated balance sheets. (3) Included in accrued liabilities on the condensed consolidated balance sheets. (4) Included in other non-current liabilities on the condensed consolidated balance sheets. (5) The carrying amount of the debt instrument is presented net of debt issuance costs, premium and discount. Refer to Note 9, "Debt," for gross carrying amounts. The Company values its financial instruments using an industry standard market approach, in which prices and other relevant information are generated by market transactions involving identical or comparable assets or liabilities. No financial instruments were recognized using unobservable inputs. Interest rate swaps were measured at fair value using quoted market prices for the swap interest rate indexes over the term of the swap discounted to present value versus the fixed rate of the contract. The interest rate caps were measured at fair value using implied volatility rates of each individual caplet and the yield curve for the related periods. 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 estimated fair value of the Company’s term loans was based on information provided by the agent under the Company’s senior secured credit facility. The estimated fair values of the Company’s notes were based upon quoted market prices. There has not been any impact to the fair value of derivative liabilities due to the Company's own credit risk. Similarly, there has not been any impact to the fair value of derivative assets based on the Company's evaluation of counterparties' credit risks. The fair value of cash and cash equivalents, restricted cash, trade accounts receivable-net and accounts payable approximated book value due to the short-term nature of these instruments at March 30, 2019 and September 30, 2018

DERIVATIVES AND HEDGING ACTIVIT

DERIVATIVES AND HEDGING ACTIVITIES	6 Months Ended
	Mar. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVES AND HEDGING ACTIVITIES	DERIVATIVES AND HEDGING ACTIVITIES The Company is exposed to, among other things, the impact of changes in foreign currency exchange rates and interest rates in the normal course of business. The Company’s risk management program is designed to manage the exposure and volatility arising from these risks, and utilizes derivative financial instruments to offset a portion of these risks. The Company uses derivative financial instruments only to the extent necessary to hedge identified business risks and does not enter into such transactions for trading purposes. The Company generally does not require collateral or other security with counterparties to these financial instruments and is therefore subject to credit risk in the event of nonperformance; however, the Company monitors credit risk and currently does not anticipate nonperformance by other parties. 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. The Company has agreements with each of its swap and cap counterparties that contain a provision whereby if the Company defaults on the credit facility the Company could also be declared in default on its swaps and caps, resulting in an acceleration of payment under the swaps and caps. All derivative financial instruments are recorded at fair value in the condensed consolidated balance sheets. 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 condensed consolidated balance sheet in accumulated other comprehensive income 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 accumulated other comprehensive income is reclassified into earnings in the same period during which the underlying hedged transaction affects earnings. Interest Rate Swap and Cap Agreements – Interest rate swap and cap agreements are used to manage interest rate risk associated with floating-rate borrowings under our credit facility. The interest rate swap and cap agreements utilized by the Company effectively modify the Company’s exposure to interest rate risk by converting a portion of the Company’s floating-rate debt to a fixed rate basis through the expiration date of the interest rate swap and cap agreements, thereby reducing the impact of interest rate changes on future interest expense. These agreements involve the receipt of floating rate amounts in exchange for fixed rate interest payments over the term of the agreements without an exchange of the underlying principal amount. These derivative instruments qualify as effective cash flow hedges under GAAP. For these cash flow hedges, the effective portion of the gain or loss from the financial instruments was initially reported as a component of accumulated other comprehensive (loss) income in stockholders’ deficit and subsequently reclassified into earnings in the same line as the hedged item in the same period or periods during which the hedged item affected earnings. As the interest rate swap and cap agreements are used to manage interest rate risk, any gains or losses from the derivative instruments that are reclassified into earnings are recognized in interest expense - net in the condensed consolidated statements of income. The following table summarizes the Company's interest rate swap agreements: Aggregate Notional Amount (in millions) Start Date End Date Related Term Loans Conversion of Related Variable Rate Debt to Fixed Rate of: $750 3/31/2016 6/30/2020 Tranche E 5.3% (2.8% plus the 2.5% margin percentage) $500 6/29/2018 3/31/2025 Tranche E 5.5% (3.0% plus the 2.5% margin percentage) $750 6/30/2020 6/30/2022 Tranche E 5.0% (2.5% plus the 2.5% margin percentage) $1,500 6/30/2022 3/31/2025 Tranche E 5.6% (3.1% plus the 2.5% margin percentage) $1,000 9/30/2014 6/28/2019 Tranche F 4.9% (2.4% plus the 2.5% margin percentage) $1,000 6/28/2019 6/30/2021 Tranche F 4.3% (1.8% plus the 2.5% margin percentage) $1,400 6/30/2021 3/31/2023 Tranche F 5.5% (3.0% plus the 2.5% margin percentage) $500 12/30/2016 12/31/2021 Tranche G 4.4% (1.9% plus the 2.5% margin percentage) $400 9/30/2017 9/30/2022 Tranche G 4.4% (1.9% plus the 2.5% margin percentage) $900 12/31/2021 6/28/2024 Tranche G 5.6% (3.1% plus the 2.5% margin percentage) $400 9/30/2022 6/28/2024 Tranche G 5.5% (3.0% plus the 2.5% margin percentage) The following table summarizes the Company's interest rate cap agreements: Aggregate Notional Amount Start Date End Date Related Term Loans Offsets Variable Rate Debt Attributable to Fluctuations Above: $750 9/30/2015 6/30/2020 Tranche E Three month LIBO rate of 2.5% $750 6/30/2020 6/30/2022 Tranche E Three month LIBO rate of 2.5% $400 6/30/2016 6/30/2021 Tranche F Three month LIBO rate of 2.0% $400 12/30/2016 12/31/2021 Tranche G Three month LIBO rate of 2.5% Certain derivative asset and liability balances are offset where master netting agreements provide for the legal right of setoff. For classification purposes, we record the net fair value of each type of derivative position that is expected to settle in less than one year with each counterparty as a net current asset or liability and each type of long-term position as a net non-current asset or liability. The amounts shown in the table below represent the gross amounts of recognized assets and liabilities, the amounts offset in the condensed consolidated balance sheet and the net amounts of assets and liabilities presented therein. March 30, 2019 September 30, 2018 Asset Liability Asset Liability Interest rate cap agreements $ 9,353 $ — $ 36,160 $ — Interest rate swap agreements 18,803 (98,925 ) 72,090 — Total 28,156 (98,925 ) 108,250 — Effect of counterparty netting (11,637 ) 11,637 670 (670 ) Net derivatives as classified in the balance sheet (1) $ 16,519 $ (87,288 ) $ 108,920 $ (670 ) (1) Refer to Note 11, "Fair Value Measurements," for the condensed consolidated balance sheet classification of our interest rate swap and cap agreements. Based on the fair value amounts of the interest rate swap and cap agreements determined as of March 30, 2019 , the estimated net amount of existing gains and losses and caplet amortization expected to be reclassified into interest income within the next twelve months is approximately $0.8 million . Effective September 30, 2016, the Company redesignated the interest rate cap agreements related to the $400 million and the $750 million aggregate notional amount with cap rates of 2.0% and 2.5% , respectively, based on the expected probable cash flows associated with the 2016 term loans and 2015 term loans in consideration of the Company’s ability to select one-month, two-month, three-month, or six-month LIBO rate set forth in the Second Amended and Restated Credit Agreement. Accordingly, amounts previously recorded as a component of accumulated other comprehensive (loss) income in stockholder’s deficit amortized into interest expense was $2.3 million and $2.0 million for the twenty-six week period s ended March 30, 2019 and March 31, 2018 , respectively. The accumulated other comprehensive loss to be reclassified into interest expense over the remaining term of the cap agreements is $8.7 million with a related tax benefit of $2.0 million as of March 30, 2019 . Effective December 30, 2017, the Company redesignated the existing interest rate swap agreements related to the $750 million , $500 million , $1,000 million and $750 million aggregate notional amounts with swap rates of 5.0% , 4.4% , 4.3% and 5.3% , respectively, based on the expected probable cash flows associated with certain term loans in consideration of the Company’s removal of the LIBO rate floor on the certain term loans as set forth in Amendment No. 4 to the Second Amended and Restated Credit Agreement. Accordingly, the amount recorded as a component of accumulated other comprehensive (loss) income in stockholders’ deficit related to these redesignated interest rate swap hedges will be amortized into earnings based on the original maturity date of the related interest rate swap agreements. Amounts previously recorded as a component of accumulated other comprehensive (loss) income in stockholders' deficit amortized into interest expense was $0.5 million and $0.3 million for the twenty-six week period s ended March 30, 2019 and March 31, 2018 . The accumulated other comprehensive income to be reclassified into interest income over the remaining term of the swaps agreements is $1.2 million with a related tax expense of $0.3 million as of March 30, 2019 . Effective March 31, 2018, the Company redesignated the existing interest rate swap agreements related to the $1,000 million and the $400 million aggregate notional amount with swap rates of 4.9% and 4.4% , respectively, based on the expected probable cash flows associated with certain term loans in consideration of the Company’s removal of the LIBO rate floor on the certain term loans as set forth in the refinancing facility agreement dated February 22, 2018 related to the Second Amended and Restated Credit Agreement. Accordingly, the amount recorded as a component of accumulated other comprehensive (loss) income in stockholders’ deficit related to these redesignated interest rate swap hedges will be amortized into earnings based on the original maturity date of the related interest rate swap agreements. Amounts previously recorded as a component of accumulated other comprehensive (loss) income in stockholders' deficit amortized into interest income was $1.4 million for the twenty-six week period ended March 30, 2019 . The accumulated other comprehensive income to be reclassified into interest income over the remaining term of the swaps agreements is $10.0 million with a related tax expense of $2.4 million as of March 30, 2019 . 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, 2019 , the Company had outstanding foreign currency forward exchange contracts principally to sell U.S. dollars with notional amounts of $415.7 million . 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. During the twenty-six week period ended March 30, 2019 , the Company recognized gains on foreign currency forward exchange contracts designated as fair value hedges of $0.8 million in cost of sales and $1.0 million in selling and administrative expenses, respectively, in the condensed consolidated statement of income. During the twenty-six week period ended March 30, 2019 , the Company reclassified losses on foreign currency forward exchange contracts designated as cash flow hedges of $1.0 million to net sales in the condensed consolidated income statement. The losses were previously recorded as a component of accumulated other comprehensive (loss) income in stockholders' deficit. During the twenty-six week period ended March 30, 2019 , the Company recorded a gain of $1.8 million on foreign currency forward exchange contracts that have not been designated as accounting hedges. These foreign currency exchange gains are included in selling and administrative expenses. There was no significant impact to the Company’s earnings related to the ineffective portion of any hedging instruments during the twenty-six week period ended March 30, 2019 . 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 twenty-six week period ended March 30, 2019 . Amounts related to foreign currency forward exchange contracts included in accumulated other comprehensive (loss) income in stockholders' deficit are reclassified into earnings when the hedged transaction settles. The Company expects to reclassify approximately $10.8 million of net losses into earnings over the next 12 months. The maximum duration of the Company’s foreign currency cash flow hedge contracts at March 30, 2019

SEGMENTS

SEGMENTS	6 Months Ended
	Mar. 30, 2019
Segment Reporting [Abstract]
SEGMENTS	SEGMENTS The Company’s businesses are organized and managed in four reporting segments: Power & Control, Airframe, Non-aviation and Esterline. The Power & Control segment includes operations that primarily develop, produce and market systems and components that predominately provide power to or control power of the aircraft utilizing electronic, fluid, power and mechanical motion control technologies. Major product offerings include mechanical/electro-mechanical actuators and controls, ignition systems and engine technology, specialized pumps and valves, power conditioning devices, specialized AC/DC electric motors and generators, databus and power controls, high performance hoists, winches and lifting devices and cargo loading and handling systems. Primary customers of this segment are engine and power system and subsystem suppliers, airlines, third party maintenance suppliers, military buying agencies and repair depots. Products are sold in the original equipment and aftermarket market channels. The Airframe segment includes operations that primarily develop, produce and market systems and components that are used in non-power airframe applications utilizing airframe and cabin structure technologies. Major product offerings include engineered latching and locking devices, rods and locking devices, engineered connectors and elastomers, cockpit security components and systems, aircraft audio systems, specialized lavatory components, seat belts and safety restraints, engineered interior surfaces and related components, lighting and control technology, military personnel parachutes and cargo delivery systems. Primary customers of this segment are airframe manufacturers and cabin system suppliers and subsystem suppliers, airlines, third party maintenance suppliers, military buying agencies and repair depots. Products are sold in the original equipment and aftermarket market channels. The Non-aviation segment includes operations that primarily develop, produce and market products for non-aviation markets. Major product offerings include seat belts and safety restraints for ground transportation applications, mechanical/electro-mechanical actuators and controls for space applications, hydraulic/electromechanical actuators and fuel valves for land based gas turbines, and refueling systems for heavy equipment used in mining, construction and other industries and turbine controls for the energy and oil and gas markets. Primary customers of this segment are off-road vehicle suppliers and subsystem suppliers, child restraint system suppliers, satellite and space system suppliers, manufacturers of heavy equipment used in mining, construction and other industries and turbine original equipment manufacturers, gas pipeline builders and electric utilities. The Esterline segment includes recently acquired Esterline operations that primarily develop, produce and market products for the aerospace and defense industry specializing in three core business sectors - advanced materials, avionics and controls and sensors and systems. Major product offerings within the advanced materials sector include high-temperature-resistant materials and components used for a wide range of military and commercial aerospace purposes, and combustible ordinance and electronic warfare countermeasure products. Major product offerings within the avionics and controls sector include technology interface systems for commercial and military aircraft and similar devices for land- and sea-based military vehicles, integrated cockpit systems, display technologies for avionics, training and simulation markets, secure communications systems, specialized medical equipment, and other high-end industrial applications. Major product offerings within the sensors and systems sector include high-precision temperature and pressure sensors, specialized harsh-environment connectors, electrical power distribution equipment, and other related systems principally for aerospace and defense customers. Products are primarily sold in the original equipment and aftermarket channels. The assessment of this segment is preliminary as Esterline was acquired during the second quarter of fiscal 2019. Refer to Note 3, "Acquisitions and Divestitures," for further information on the Esterline acquisition. The Esterline segment will be reassessed during the third quarter of fiscal 2019 as the acquisition is expected to be integrated into TransDigm's existing Power & Control, Airframe and Non-aviation segments. The primary measurement used by management to review and assess the operating performance of each segment is EBITDA As Defined. The Company defines EBITDA As Defined as earnings before interest, taxes, depreciation and amortization plus certain non-operating items recorded as corporate expenses including refinancing costs, acquisition-related costs, transaction-related costs, foreign currency gains and losses, and non-cash compensation charges incurred in connection with the Company’s stock option plans. Acquisition-related costs represent accounting adjustments to inventory associated with acquisitions of businesses and product lines that were charged to cost of sales when the inventory was sold; costs incurred to integrate acquired businesses and product lines into the Company’s operations, facility relocation costs and other acquisition-related costs; transaction related costs comprising deal fees; legal, financial and tax diligence expenses and valuation costs that are required to be expensed as incurred and other acquisition accounting adjustments. EBITDA As Defined is not a measurement of financial performance under GAAP. Although the Company uses EBITDA As Defined to assess the performance of its business and for various other purposes, the use of this non-GAAP financial measure as an analytical tool has limitations, and it should not be considered in isolation or as a substitute for analysis of the Company’s results of operations as reported in accordance with GAAP. The Company’s segments are reported on the same basis used internally for evaluating performance and for allocating resources. The accounting policies for each segment are the same as those described in the summary of significant accounting policies in the Company’s consolidated financial statements. Intersegment sales and transfers are recorded at values based on market prices, which creates intercompany profit on intersegment sales or transfers that is eliminated in consolidation. Intersegment sales were insignificant for the periods presented below. Certain corporate-level expenses are allocated to the operating segments. The following table presents net sales by reportable segment (in thousands): Thirteen Week Periods Ended Twenty-Six Week Periods Ended March 30, 2019 March 31, 2018 March 30, 2019 March 31, 2018 Net sales to external customers Power & Control Commercial OEM 129,067 121,290 261,668 236,883 Commercial Aftermarket 181,397 169,687 338,904 319,203 Defense 290,263 237,483 560,464 455,092 Total Power & Control $ 600,727 $ 528,460 $ 1,161,036 $ 1,011,178 Airframe Commercial OEM 151,203 124,641 284,349 231,142 Commercial Aftermarket 192,424 173,582 369,458 331,819 Defense 92,862 71,560 181,502 140,214 Total Airframe 436,489 369,783 835,309 703,175 Total Non-aviation 36,736 34,827 70,909 66,677 Total Esterline 121,986 — 121,986 — $ 1,195,938 $ 933,070 $ 2,189,240 $ 1,781,030 The following table reconciles EBITDA As Defined by segment to consolidated income from continuing operations before income taxes (in thousands): Thirteen Week Periods Ended Twenty-Six Week Periods Ended March 30, 2019 March 31, 2018 March 30, 2019 March 31, 2018 EBITDA As Defined Power & Control $ 320,783 $ 275,562 $ 620,716 $ 520,337 Airframe 224,019 186,006 415,499 344,425 Non-aviation 11,895 10,321 22,614 19,317 Esterline 26,656 — 26,656 — Total segment EBITDA As Defined 583,353 471,889 1,085,485 884,079 Unallocated corporate expenses 11,595 8,766 27,039 19,423 Total Company EBITDA As Defined 571,758 463,123 1,058,446 864,656 Depreciation and amortization expense 40,808 30,970 76,226 61,609 Interest expense - net 201,409 161,266 373,409 322,199 Acquisition-related costs 38,327 4,485 50,066 6,559 Stock compensation expense 20,543 11,590 38,273 22,703 Refinancing costs 3,298 638 3,434 1,751 Other, net 189 6,987 90 11,684 Income from continuing operations before income taxes $ 267,184 $ 247,187 $ 516,948 $ 438,151 The following table presents total assets by segment (in thousands): March 30, 2019 September 30, 2018 Total assets Power & Control $ 5,838,066 $ 5,698,524 Airframe 4,132,468 4,091,011 Non-aviation 190,305 234,770 Esterline 5,801,611 — Corporate 1,834,706 2,173,162 $ 17,797,156 $ 12,197,467

ACCUMULATED OTHER COMPREHENSIVE

ACCUMULATED OTHER COMPREHENSIVE LOSS	6 Months Ended
	Mar. 30, 2019
Equity [Abstract]
ACCUMULATED OTHER COMPREHENSIVE LOSS	ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME The following table presents the components of accumulated other comprehensive (loss) income, net of taxes, for the twenty-six week period ended March 30, 2019 (in thousands): Unrealized (loss) gain on derivatives designated and qualifying as cash flow hedges (1) Defined benefit pension plan activity (2) Currency translation adjustment Total Balance at September 30, 2018 $ 67,191 $ (10,729 ) $ (52,362 ) $ 4,100 Current-period other comprehensive (loss) gain (139,006 ) 131 (24,149 ) (163,024 ) Amounts reclassified from AOCI related to derivative instruments 1,887 — — 1,887 Balance at March 30, 2019 $ (69,928 ) $ (10,598 ) $ (76,511 ) $ (157,037 ) (1) Unrealized (loss) gain represents derivative instruments, net of taxes of $19,210 and $(14,290) for the thirteen week periods ended March 30, 2019 and March 31, 2018 , respectively and $41,480 and $(24,725) for the twenty-six week period s ended March 30, 2019 and March 31, 2018 , respectively. (2) Defined benefit pension plan and other postretirement plan activity represents pension liability adjustments, net of taxes of $(51) for the thirteen and twenty-six week periods ended March 30, 2019 . A summary of reclassifications out of accumulated other comprehensive (loss) income for the twenty-six week period s ended March 30, 2019 and March 31, 2018 is provided below (in thousands): Amount reclassified Twenty-Six Week Periods Ended Description of reclassifications out of accumulated other comprehensive (loss) income March 30, 2019 March 31, 2018 Amortization from redesignated interest rate swap and cap agreements (1) $ 1,461 $ 2,213 Losses from settlement of foreign currency forward exchange contracts (2) 1,005 — Deferred tax benefit on reclassifications out of accumulated other comprehensive (loss) income (579 ) (566 ) Losses reclassified into earnings, net of tax $ 1,887 $ 1,647 (1) This component of accumulated other comprehensive (loss) income is included in interest expense (see Note 12, “Derivatives and Hedging Activities,” for additional information). (2)

SUPPLEMENTAL GUARANTOR INFORMAT

SUPPLEMENTAL GUARANTOR INFORMATION	6 Months Ended
	Mar. 30, 2019
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
SUPPLEMENTAL GUARANTOR INFORMATION	SUPPLEMENTAL GUARANTOR INFORMATION TransDigm Inc.’s 2022 Notes, 2024 Notes, 2025 Notes, 6.375% 2026 Notes, 2026 Secured Notes and 2027 Notes are jointly and severally guaranteed, on a senior subordinated basis, by TD Group, TransDigm UK Holdings plc ("TransDigm UK") and TransDigm Inc.’s Domestic Restricted Subsidiaries, as defined in the applicable Indentures. TransDigm UK's 6.875% 2026 Notes are jointly and severally guaranteed, on a senior subordinated basis, by TD Group, TransDigm Inc. and TransDigm Inc.'s Domestic Restricted Subsidiaries as defined in the applicable indenture. The following supplemental condensed consolidating financial information presents, in separate columns, the balance sheets of the Company as of March 30, 2019 and September 30, 2018 and its statements of income and comprehensive income and cash flows for the twenty-six week period s ended March 30, 2019 and March 31, 2018 for (i) TransDigm Group on a parent only basis with its investment in subsidiaries recorded under the equity method, (ii) TransDigm Inc. including its directly owned operations and non-operating entities, excluding TransDigm UK, (iii) TransDigm UK (iv) the Subsidiary Guarantors (other than TransDigm UK) on a combined basis, (v) Non-Guarantor Subsidiaries and (vi) the Company on a consolidated basis. Separate financial statements of TransDigm Inc. are not presented because TransDigm Inc.’s 2022 Notes, 2024 Notes, 2025 Notes, 6.375% 2026 Notes, 2026 Secured Notes and 2027 Notes are fully and unconditionally guaranteed on a senior subordinated basis by TD Group, TransDigm UK and all of TransDigm Inc's Domestic Restricted Subsidiaries and because TD Group has no significant operations or assets separate from its investment in TransDigm Inc. Separate financial statements of TransDigm UK are not presented because TransDigm UK's 6.875% 2026 Notes, issued in May 2018, are fully and unconditionally guaranteed on a senior subordinated basis by TD Group, TransDigm Inc. and all of TransDigm Inc.'s Domestic Restricted Subsidiaries. TRANSDIGM GROUP INCORPORATED CONDENSED CONSOLIDATING BALANCE SHEET AS OF MARCH 30, 2019 (Amounts in thousands) TransDigm Group TransDigm Inc. TransDigm UK Subsidiary Guarantors Non- Guarantor Subsidiaries Eliminations Total Consolidated ASSETS CURRENT ASSETS: Cash and cash equivalents $ 143 $ 1,412,477 $ 268 $ (9,432 ) $ 1,037,880 $ — $ 2,441,336 Restricted cash — — — — 387,566 — 387,566 Trade accounts receivable - Net — — — 226,948 914,507 (206 ) 1,141,249 Inventories - Net — 48,057 — 935,060 483,481 (13,554 ) 1,453,044 Prepaid expenses and other — 60,143 — 62,136 50,055 — 172,334 Total current assets 143 1,520,677 268 1,214,712 2,873,489 (13,760 ) 5,595,529 INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES (1,491,921 ) 20,091,568 1,108,369 9,532,453 3,872,214 (33,112,683 ) — PROPERTY, PLANT AND EQUIPMENT - NET — 47,827 — 464,012 225,760 — 737,599 GOODWILL — 82,924 — 5,984,217 2,547,175 — 8,614,316 OTHER INTANGIBLE ASSETS - NET — 25,908 — 1,692,863 1,005,681 — 2,724,452 DEFERRED INCOME TAXES — — — 7 38,965 — 38,972 OTHER — 34,347 — 28,757 23,184 — 86,288 TOTAL ASSETS $ (1,491,778 ) $ 21,803,251 $ 1,108,637 $ 18,917,021 $ 10,586,468 $ (33,126,443 ) $ 17,797,156 LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY CURRENT LIABILITIES: Current portion of long-term debt $ — $ 75,847 $ — $ 1,712 $ 370,604 $ — $ 448,163 Short-term borrowings - trade receivable securitization facility — — — 299,806 — 299,806 Accounts payable — 22,416 — 168,195 127,975 — 318,586 Accrued liabilities — 219,766 12,891 205,790 221,191 — 659,638 Total current liabilities — 318,029 12,891 375,697 1,019,576 — 1,726,193 LONG-TERM DEBT — 15,918,829 491,118 58,242 40,992 — 16,509,181 DEFERRED INCOME TAXES — 577,615 — 19 80,541 — 658,175 OTHER NON-CURRENT LIABILITIES — 218,538 — 100,104 67,212 — 385,854 Total liabilities — 17,033,011 504,009 534,062 1,208,321 — 19,279,403 TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY (1,491,778 ) 4,770,240 604,628 18,380,603 9,370,972 (33,126,443 ) (1,491,778 ) NONCONTROLLING INTEREST — — — 2,356 7,175 — 9,531 TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY $ (1,491,778 ) $ 21,803,251 $ 1,108,637 $ 18,917,021 $ 10,586,468 $ (33,126,443 ) $ 17,797,156 TRANSDIGM GROUP INCORPORATED CONDENSED CONSOLIDATING BALANCE SHEET AS OF SEPTEMBER 30, 2018 (Amounts in thousands) TransDigm Group TransDigm Inc. TransDigm UK Subsidiary Guarantors Non- Guarantor Subsidiaries Eliminations Total Consolidated ASSETS CURRENT ASSETS: Cash and cash equivalents $ 389 $ 1,821,437 $ 125 $ (1,763 ) $ 252,829 $ — $ 2,073,017 Restricted cash — — — — — — — Trade accounts receivable - Net — — — 40,916 663,394 — 704,310 Inventories - Net — 45,262 — 648,574 115,913 (4,457 ) 805,292 Prepaid expenses and other — 16,231 — 47,020 11,417 — 74,668 Total current assets 389 1,882,930 125 734,747 1,043,553 (4,457 ) 3,657,287 INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES (1,808,860 ) 10,459,497 1,099,886 8,928,726 2,160,236 (20,839,485 ) — PROPERTY, PLANT AND EQUIPMENT - NET — 15,562 — 319,567 53,204 — 388,333 GOODWILL — 97,002 — 5,466,148 660,140 — 6,223,290 OTHER INTANGIBLE ASSETS - NET — 31,362 — 1,514,983 242,059 — 1,788,404 DEFERRED INCOME TAXES — — — — — — — OTHER — 104,633 — 29,805 5,715 — 140,153 TOTAL ASSETS $ (1,808,471 ) $ 12,590,986 $ 1,100,011 $ 16,993,976 $ 4,164,907 $ (20,843,942 ) $ 12,197,467 LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY CURRENT LIABILITIES: Current portion of long-term debt $ — $ 75,817 $ — $ — $ — $ — $ 75,817 Short-term borrowings - trade receivable securitization facility — — — — 299,519 — 299,519 Accounts payable — 18,470 — 115,735 39,398 — 173,603 Accrued liabilities — 118,600 13,274 162,618 56,951 — 351,443 Total current liabilities — 212,887 13,274 278,353 395,868 — 900,382 LONG-TERM DEBT — 12,011,166 490,780 — — — 12,501,946 DEFERRED INCOME TAXES — 345,357 — (2,329 ) 56,468 — 399,496 OTHER NON-CURRENT LIABILITIES — 77,573 — 104,829 21,712 — 204,114 Total liabilities — 12,646,983 504,054 380,853 474,048 — 14,005,938 TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY (1,808,471 ) (55,997 ) 595,957 16,613,123 3,690,859 (20,843,942 ) (1,808,471 ) NONCONTROLLING INTEREST — — — — — — — TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY $ (1,808,471 ) $ 12,590,986 $ 1,100,011 $ 16,993,976 $ 4,164,907 $ (20,843,942 ) $ 12,197,467 TRANSDIGM GROUP INCORPORATED CONDENSED CONSOLIDATING STATEMENT OF INCOME AND COMPREHENSIVE INCOME FOR THE TWENTY-SIX WEEK PERIOD ENDED MARCH 30, 2019 (Amounts in thousands) TransDigm Group TransDigm Inc. TransDigm UK Subsidiary Guarantors Non- Guarantor Subsidiaries Eliminations Total Consolidated NET SALES $ — $ 87,851 $ — $ 1,763,478 $ 398,233 $ (60,322 ) $ 2,189,240 COST OF SALES — 65,713 — 730,086 230,326 (60,322 ) 965,803 GROSS PROFIT — 22,138 — 1,033,392 167,907 — 1,223,437 SELLING AND ADMINISTRATIVE EXPENSES — 100,789 — 148,575 37,185 — 286,549 AMORTIZATION OF INTANGIBLE ASSETS — 2,043 — 35,462 5,592 — 43,097 (LOSS) INCOME FROM OPERATIONS — (80,694 ) — 849,355 125,130 — 893,791 INTEREST EXPENSE (INCOME) - NET — 377,799 9,070 (2,701 ) (10,759 ) — 373,409 REFINANCING COSTS — 3,173 261 — — — 3,434 EQUITY IN INCOME OF SUBSIDIARIES (398,450 ) (726,217 ) — — — 1,124,667 — INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES 398,450 264,551 (9,331 ) 852,056 135,889 (1,124,667 ) 516,948 INCOME TAX PROVISION — (133,899 ) — 233,647 18,526 — 118,274 INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST 398,450 398,450 (9,331 ) 618,409 117,363 (1,124,667 ) 398,674 NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS — — — — (224 ) — (224 ) NET INCOME (LOSS) FROM CONTINUING OPERATIONS ATTRIBUTABLE TO TD GROUP 398,450 398,450 (9,331 ) 618,409 117,139 (1,124,667 ) 398,450 (LOSS) INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX — — — — — — — NET INCOME (LOSS) ATTRIBUTABLE TO TD GROUP $ 398,450 $ 398,450 $ (9,331 ) $ 618,409 $ 117,139 $ (1,124,667 ) $ 398,450 OTHER COMPREHENSIVE (LOSS) INCOME, NET OF TAX (161,137 ) (122,925 ) — 11,599 (98,634 ) 209,960 (161,137 ) TOTAL COMPREHENSIVE INCOME (LOSS) $ 237,313 $ 275,525 $ (9,331 ) $ 630,008 $ 18,505 $ (914,707 ) $ 237,313 TRANSDIGM GROUP INCORPORATED CONDENSED CONSOLIDATING STATEMENT OF INCOME AND COMPREHENSIVE INCOME FOR THE TWENTY-SIX WEEK PERIOD ENDED MARCH 31, 2018 (Amounts in thousands) TransDigm Group TransDigm Inc. TransDigm UK Subsidiary Guarantors Non- Guarantor Subsidiaries Eliminations Total Consolidated NET SALES $ — $ 77,215 $ — $ 1,441,477 $ 301,750 $ (39,412 ) $ 1,781,030 COST OF SALES — 43,858 — 577,494 188,366 (39,412 ) 770,306 GROSS PROFIT — 33,357 — 863,983 113,384 — 1,010,724 SELLING AND ADMINISTRATIVE EXPENSES — 48,893 — 103,779 61,382 — 214,054 AMORTIZATION OF INTANGIBLE ASSETS — 714 — 29,709 4,146 — 34,569 (LOSS) INCOME FROM OPERATIONS — (16,250 ) — 730,495 47,856 — 762,101 INTEREST EXPENSE (INCOME) - NET — 318,138 — (2 ) 4,063 — 322,199 REFINANCING COSTS — 1,751 — — — — 1,751 EQUITY IN INCOME OF SUBSIDIARIES (511,053 ) (562,544 ) — — — 1,073,597 — INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES 511,053 226,405 — 730,497 43,793 (1,073,597 ) 438,151 INCOME TAX PROVISION — (284,648 ) — 202,265 6,683 — (75,700 ) INCOME FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST 511,053 511,053 — 528,232 37,110 (1,073,597 ) 513,851 NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS — — — — — — — NET INCOME FROM CONTINUING OPERATIONS ATTRIBUTABLE TO TD GROUP 511,053 511,053 — 528,232 37,110 (1,073,597 ) 513,851 (LOSS) INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX — — — (17,869 ) 15,071 — (2,798 ) NET INCOME ATTRIBUTABLE TO TD GROUP $ 511,053 $ 511,053 $ — $ 510,363 $ 52,181 $ (1,073,597 ) $ 511,053 OTHER COMPREHENSIVE INCOME, NET OF TAX 91,662 64,166 — 9,719 55,674 (129,559 ) 91,662 TOTAL COMPREHENSIVE INCOME $ 602,715 $ 575,219 $ — $ 520,082 $ 107,855 $ (1,203,156 ) $ 602,715 TRANSDIGM GROUP INCORPORATED CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS FOR THE TWENTY-SIX WEEK PERIOD ENDED MARCH 30, 2019 (Amounts in thousands) TransDigm Group TransDigm Inc. TransDigm UK Subsidiary Guarantors Non- Guarantor Subsidiaries Eliminations Total Consolidated NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES $ — $ (64,040 ) $ 4,424 $ 468,801 $ 34,900 $ 8,912 $ 452,997 INVESTING ACTIVITIES: Capital expenditures — (1,827 ) — (36,175 ) (5,402 ) — (43,404 ) Payments made in connection with acquisitions, net of cash acquired — (3,538,128 ) — (31,250 ) — — (3,569,378 ) Net cash used in investing activities — (3,539,955 ) — (67,425 ) (5,402 ) — (3,612,782 ) FINANCING ACTIVITIES: Intercompany activities (23,013 ) (701,197 ) (4,281 ) (407,292 ) 1,144,695 (8,912 ) — Proceeds from exercise of stock options 47,126 — — — — — 47,126 Dividend equivalent payments (24,309 ) — — — — — (24,309 ) Repayment on term loans — (38,214 ) — — — — (38,214 ) Cash tender and redemption of 2020 Notes — (550,000 ) — — — — (550,000 ) Proceeds from 2027 Notes, net — 544,578 — — — — 544,578 Proceeds from 2026 Secured Notes, net — 3,937,398 — — — — 3,937,398 Financing Fees and Other — 2,470 — (1,753 ) (2,470 ) — (1,753 ) Net cash (used in) provided by financing activities (196 ) 3,195,035 (4,281 ) (409,045 ) 1,142,225 (8,912 ) 3,914,826 EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS (50 ) — — — 894 — 844 (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH (246 ) (408,960 ) 143 (7,669 ) 1,172,617 — 755,885 CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD 389 1,821,437 125 (1,763 ) 252,829 — 2,073,017 CASH, CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD $ 143 $ 1,412,477 $ 268 $ (9,432 ) $ 1,425,446 $ — $ 2,828,902 TRANSDIGM GROUP INCORPORATED CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS FOR THE TWENTY-SIX WEEK PERIOD ENDED MARCH 31, 2018 (Amounts in thousands) TransDigm Group TransDigm Inc. TransDigm UK Subsidiary Guarantors Non- Guarantor Subsidiaries Eliminations Total Consolidated NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES $ — $ (157,892 ) $ — $ 578,789 $ 29,807 $ 2,980 $ 453,684 INVESTING ACTIVITIES: Capital expenditures — (826 ) — (27,370 ) (2,688 ) — (30,884 ) Payments made in connection with acquisitions, net of cash acquired — (50,320 ) — — — — (50,320 ) Proceeds in connection with sale of discontinued operations — 57,686 — — — — 57,686 Net cash provided by (used in) investing activities — 6,540 — (27,370 ) (2,688 ) — (23,518 ) FINANCING ACTIVITIES: Intercompany activities 42,048 571,729 — (547,932 ) (62,865 ) (2,980 ) — Proceeds from exercise of stock options 26,305 — — — — — 26,305 Special dividend and dividend equivalent payments (56,148 ) — — — — — (56,148 ) Proceeds from term loans, net — 793,042 — — — — 793,042 Repayment on term loans — (833,052 ) — — — — (833,052 ) Financing fees and other — (2,155 ) — — — — (2,155 ) Net cash provided by (used in) financing activities 12,205 529,564 — (547,932 ) (62,865 ) (2,980 ) (72,008 ) EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS — — — — 2,288 — 2,288 INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS 12,205 378,212 — 3,487 (33,458 ) — 360,446 CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD 2,416 439,473 — (203 ) 208,875 — 650,561 CASH AND CASH EQUIVALENTS, END OF PERIOD $ 14,621 $ 817,685 $ — $ 3,284 $ 175,417 $ — $ 1,011,007

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	6 Months Ended
	Mar. 30, 2019
Subsequent Event [Line Items]
Subsequent Events [Text Block]	SUBSEQUENT EVENTS On April 15, 2019, the Company redeemed the principal amount of approximately $373.8 million in 2023 Notes ( €330.0 million as the 2023 Notes were denominated in Euros), plus accrued interest of approximately $6.8 million , the early redemption premium of $6.8 million and fees of approximately $0.2 million . The 2023 Notes were issued by Esterline in April 2015 and remained outstanding as of the acquisition date of Esterline by TransDigm. A notice of redemption with respect to the notes was given to each holder of the 2023 Notes, providing for the redemption of all outstanding notes on April 15, 2019 at the redemption price set forth in the related indenture. At March 30, 2019, the funds for the redemption of the 2023 Notes of approximately $387.6 million were held in trust and were committed to be used to redeem any and all of the 2023 Notes. The funds were restricted to the redemption of the 2023 Notes, and as such, are presented as restricted cash in the condensed consolidated balance sheet at March 30, 2019

RECENT ACCOUNTING PRONOUNCEME_2

RECENT ACCOUNTING PRONOUNCEMENTS (Policies)	6 Months Ended
	Mar. 30, 2019
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
RECENT ACCOUNTING PRONOUNCEMENTS	RECENT ACCOUNTING PRONOUNCEMENTS In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-09, which created a new topic in the Accounting Standards Codification (“ASC”) 606, “Revenue from Contracts with Customers.” In addition to superseding and replacing nearly all existing U.S. GAAP revenue recognition guidance, including industry-specific guidance, ASC 606 requires an entity to recognize revenue in a manner that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard also specifies the accounting of some costs to obtain or fulfill a contract with a customer and expands the disclosure requirements around contracts with customers. The Company adopted this standard in the first quarter of 2019 using the modified retrospective method. The adoption of this standard did not have a material impact on our consolidated results of operations, financial position or cash flows. Refer to Note 5, "Revenue Recognition," for additional disclosures relating to ASC 606. In February 2016, the FASB issued ASU 2016-02, “Leases (ASC 842),” which will require that a lessee recognize assets and liabilities on the balance sheet for all leases with a lease term of more than twelve months, with the result being the recognition of a right of use asset and a lease liability. Additionally, in July 2018, the FASB issued ASU 2018-10, "Codification Improvements to ASC 842, Leases" which provides narrow amendments to clarify how to apply certain aspects of the new leases standard. The new leases standard guidance is effective for the Company for annual reporting periods, including interim periods therein, beginning October 1, 2019, with early adoption permitted. The Company is currently evaluating the impact of adopting this standard on our consolidated financial statements and disclosures. We are planning to adopt ASC 842 on October 1, 2019 using the modified retrospective optional transition method, in which case prior periods presented will not be restated. Also, we intend to elect the package of practical expedients, which among other things, permits us to not reassess the identification, classification and initial direct costs of leases commencing before the October 1, 2019 effective date. In June 2016, the FASB issued ASU 2016-13, "Financial Instruments—Credit Losses: Measurement of Credit Losses on Financial Instruments (ASU 2016-13)," which changes the impairment model for most financial assets. The new model uses a forward-looking expected loss method, which will generally result in earlier recognition of allowances for losses. ASU 2016-13 is effective for annual and interim periods beginning after December 15, 2019 and early adoption is permitted for annual and interim periods beginning after December 15, 2018. The Company is currently evaluating the impact of adopting this standard on our consolidated financial statements and disclosures. In October 2016, the FASB issued ASU 2016-16, “Intra-Entity Transfers of Assets Other Than Inventory” (ASU 2016-16). This accounting standard requires companies to recognize the income tax effects of intercompany sales and transfers of assets, other than inventory, in the period in which the transfer occurs. Under previous guidance companies were required to defer the income tax effects of intercompany transfers of assets by recording prepaid taxes, until such assets were sold to an outside party or otherwise recognized. Current guidance requires companies to write off any income tax amounts previously deferred as prepaid taxes from past intercompany transactions, and to record deferred tax balances for amounts not previously recognized, through a cumulative-effect adjustment to retained earnings. ASU 2016-16 is effective for public business entities for fiscal years beginning after December 15, 2017, including interim periods within those years. The Company adopted this standard in the first quarter of fiscal 2019. The adoption of this standard did not have a material impact on our consolidated financial statements. Refer to the condensed consolidated statements of stockholders' deficit for the impact of the adoption of ASU 2016-16 on retained earnings. In January 2017, the FASB issued ASU 2017-04, “Simplifying the Test for Goodwill Impairment,” to eliminate Step 2 from the goodwill impairment test in order to simplify the subsequent measurement of goodwill. The guidance is effective for fiscal years beginning after December 15, 2019, with early adoption permitted. The adoption of this standard is not expected to have a material impact on our consolidated financial statements and disclosures. In March 2017, the FASB issued ASU 2017-07, "Compensation—Retirement Benefits (ASC 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost," that changes how employers that sponsor defined benefit and/or other postretirement benefit plans present the net periodic benefit cost in the income statement. Under previous guidance, companies included all components of the net periodic benefit costs in the same lines as the service cost component. Current guidance requires employers to present the other components of the net periodic benefit costs separately from the line items that include the service cost and outside of any subtotal of operating income. In addition, only the service cost component will be eligible for capitalization in assets. Employers will have to disclose the lines used to present the other components of net periodic benefit cost, if the components are not presented separately in the income statement. The standard is effective for public business entities for fiscal years beginning after December 15, 2017, and interim periods within the fiscal year. The Company adopted this standard in the first quarter of fiscal 2019. The adoption of this standard did not have a material impact on our consolidated financial statements. In May 2017, the FASB issued ASU 2017-09, "Compensation—Stock Compensation (ASC 718): Scope of Modification Accounting," which provides clarity on which changes to the terms or conditions of share-based payment awards require an entity to apply the modification accounting provisions required in ASC 718. The standard is effective for all entities for annual periods beginning after December 15, 2017, with early adoption permitted, including adoption in any interim period for which financial statements have not yet been issued. The Company adopted this standard in the first quarter of fiscal 2019. The adoption of this standard did not have a material impact on our consolidated financial statements. In February 2018, the FASB issued ASU 2018-02, "Income Statement - Reporting Comprehensive Income (ASC 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income," which gives entities the option to reclassify tax effects stranded in accumulated other comprehensive income as a result of the Tax Cuts and Jobs Act (the "Act") into retained earnings. The guidance allows entities to reclassify from accumulated other comprehensive income to retained earnings stranded tax effects resulting from the Act's new federal corporate income tax rate. The guidance also allows entities to elect to reclassify other stranded tax effects that relate to the Act but do not directly relate to the change in the federal tax rate (e.g., state taxes, changing from a worldwide tax system to a territorial system). Tax effects that are stranded in accumulated other comprehensive income for other reasons (e.g., prior changes in tax law, a change in valuation allowance) may not be reclassified. The standard is effective for all entities for fiscal years beginning after December 15, 2018, and interim periods within the fiscal year. Early adoption is permitted, including adoption in any interim period for which financial statements have not yet been issued. Entities have the option to apply the guidance retrospectively or in the period of adoption. The adoption of this standard is not expected to have a material impact on our consolidated financial statements. In March 2018, the FASB issued ASU 2018-05, “Income Taxes (ASC 740), Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118.” The ASU adds various SEC paragraphs pursuant to the issuance of the December 2017 SEC Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act (“SAB 118”), which was effective immediately. The SEC issued SAB 118 to address concerns about reporting entities’ ability to timely comply with the accounting requirements to recognize all of the effects of the Tax Cuts and Jobs Act in the period of enactment. SAB 118 allowed disclosure that timely determination of some or all of the income tax effects from the Tax Cuts and Jobs Act were incomplete by the due date of the financial statements and if possible to provide a reasonable estimate. We have finalized our accounting for the tax effects of the Tax Cuts and Jobs Act under the guidance of SAB 118. Such finalization did not result in a material impact to the provisional tax effects previously recorded in our consolidated financial statements. In accordance with SEC Final Rule Release No. 33-10532, we have adopted Rule 3-04 of Regulation S-X during the first quarter of fiscal 2019 and have disclosed changes in the Condensed Consolidated Statements of Stockholders' Deficit for all periods presented.

REVENUE Narrative (Policies)

REVENUE Narrative (Policies)	6 Months Ended
	Mar. 30, 2019
Revenue Recognition [Abstract]
Revenue Recognition, Policy [Policy Text Block]	Accounting Policy —Revenue is recognized from the sale of products when control transfers to the customer, which is demonstrated by our right to payment, a transfer of title, a transfer of the risk and rewards of ownership, or the customer acceptance, but most frequently upon shipment where the customer obtains physical possession of the goods. The majority of the Company's revenue is recorded at a point in time. In some contracts the Company found that under ASC 606, control transferred to the customer over time primarily in contracts where the customer is required to pay for the cost of both the finished and unfinished goods at the time of cancellation plus a reasonable profit relative to the work performed for products that were customized for the customer. Upon adoption of ASC 606, we recognize revenue over time for those agreements that have a right to margin and where the products being produced have no alternative use. Prior to the adoption date, revenue related to these agreements was recognized when the goods were shipped; as a result of the adoption of ASC 606, a portion of our revenue may be earned in periods earlier than it would have been in prior years. The cumulative adjustment to retained earnings upon adoption, which is presented in the table above, represents those earnings that would have been recognized in the previous year had ASC 606 been in effect during that time. Based on our production cycle, it is generally expected that goods related to the revenue represented in that adjustment will be shipped and billed within the current year. For revenue recognized over time, we estimate the amount of revenue attributable to a contract earned at a given point during the production cycle based on certain costs, such as materials and labor incurred to date, plus the expected profit, which is a cost-to-cost input method. The Company’s payment terms vary by the type and location of the customer and the products or services offered. The Company does not offer any payment terms that would meet the requirements for consideration as a significant financing component under ASC 606. Shipping and handling fees and costs incurred in connection with products sold are recorded in cost of sales in the consolidated statements of income, and are not considered a performance obligation to our customers. The Company pays sales commissions that relate to contracts for products or services that are satisfied at a point in time or over a period of one year or less and so are recorded per the practical expedient expensed as incurred. These costs are reported as a component of selling and administrative expenses in the unaudited condensed consolidated statement of operations. We offer assurance type warranties on our products as well as separately sold warranty contracts. Revenue related to warranty contracts that are sold separately is recognized over the life of the warranty term.

ACQUISITIONS AND DIVESTITURES (

ACQUISITIONS AND DIVESTITURES (Tables)	6 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Business Acquisition [Line Items]
Disposal Groups, Including Discontinued Operations [Table Text Block]	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:6px;text-align:justify;padding-left:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The following is the summarized operating results for Schroth for the </font><font style="font-family:inherit;font-size:10pt;">thirteen and twenty-six</font><font style="font-family:inherit;font-size:10pt;"> week periods ended </font><font style="font-family:inherit;font-size:10pt;">March 30, 2019</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">March 31, 2018</font><font style="font-family:inherit;font-size:10pt;"> (in thousands):</font></div><div style="line-height:120%;padding-bottom:8px;text-align:left;padding-left:48px;text-indent:0px;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="16" rowspan="1"></td></tr><tr><td style="width:42%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:12%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:13%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:11%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:11%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="7" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Thirteen Week Period Ended</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="7" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Twenty-six Week Period Ended</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">March 30, 2019</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">March 31, 2018</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">March 30, 2019</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">March 31, 2018</font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Net sales</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">2,679</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">11,808</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(Loss) Income from discontinued operations before income taxes</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(456</font></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">354</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Income tax benefit</font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">62</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">2,016</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(Loss) Income from discontinued operations, net of tax</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(394</font></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">2,370</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Net loss on sale of discontinued operations, net of tax</font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(5,168</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(5,168</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Loss from discontinued operations</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(5,562</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(2,798</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td></tr></table></div></div></div>		from discontinued operations was $5.6 million and $2.8 million in the condensed consolidated statements of income for the thirteen and twenty-six week periods ended March 31, 2018 , respectively, which is summarized as follows (amounts in thousands): Thirteen Week Period Ended Twenty-Six Week Period Ended March 31, 2018 March 31, 2018 Net sales $ 2,679 $ 11,808 (Loss) Income from discontinued operations before income taxes (456 ) 354 Income tax benefit 62 2,016 (Loss) Income from discontinued operations, net of tax (394 ) 2,370 Net loss on sale of discontinued operations, net of tax (5,168 ) (5,168 ) Loss from discontinued operations $ (5,562 ) $ (2,798 )
Esterline [Member]
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Information [Table Text Block]	(Amounts in thousands, except per share amounts) Thirteen Week Periods Ended Twenty-Six Week Periods Ended March 30, 2019 March 31, 2018 March 30, 2019 March 31, 2018 Net sales $ 1,589,314 $ 1,448,515 $ 3,065,341 $ 2,776,082 Income from continuing operations including noncontrolling interests $ 201,754 $ 156,350 $ 387,338 $ 214,189 Net earnings per share attributable to TD Group stockholders from continuing operations - basic and diluted $ 3.59 $ 2.81 $ 6.45 $ 2.84
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	Assets acquired: Current assets, excluding cash acquired $ 1,482,442 Property, plant, and equipment 338,990 Other intangible assets 992,000 Goodwill 2,431,180 Other 49,710 Total assets acquired 5,294,322 Liabilities assumed: Current liabilities 843,653 Other noncurrent liabilities 526,819 Total liabilities assumed 1,370,472 Net assets acquired $ 3,923,850
Extant [Member]
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	The following table summarizes the purchase price allocation of the estimated fair values of the assets acquired and liabilities assumed at the transaction date (presented in thousands). Assets acquired: Current assets, excluding cash acquired $ 53,698 Property, plant, and equipment 4,103 Other intangible assets 105,000 Goodwill 406,673 Total assets acquired 569,474 Liabilities assumed: Current liabilities 9,876 Other noncurrent liabilities 25,028 Total liabilities assumed 34,904 Net assets acquired $ 534,570

ACQUISITIONS AND DIVESTITURES D

ACQUISITIONS AND DIVESTITURES Discontinued Operations (Tables)	6 Months Ended
	Mar. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">DISCONTINUED OPERATIONS</font></div><div style="line-height:120%;padding-top:6px;text-align:justify;padding-left:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In connection with the settlement of a Department of Justice investigation into the competitive effects of the acquisition, during the fourth quarter of 2017, the Company committed to dispose of the Schroth business.  Therefore, Schroth was classified as held-for-sale in the fourth quarter of 2017. The results of operations of Schroth are reflected as discontinued operations in the accompanying consolidated financial statements for all periods presented. On January 26, 2018, the Company completed the sale of Schroth in a management buyout to a private equity fund and certain members of Schroth management for approximately </font><font style="font-family:inherit;font-size:10pt;">$61.4 million</font><font style="font-family:inherit;font-size:10pt;">, which includes a working capital adjustment of </font><font style="font-family:inherit;font-size:10pt;">$0.3 million</font><font style="font-family:inherit;font-size:10pt;"> that was settled on July 6, 2018. The Company previously acquired Schroth in February 2017 (refer to Note 3, “Acquisitions and Divestitures”).</font></div><div style="line-height:120%;padding-top:6px;text-align:justify;padding-left:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The income from discontinued operations was </font><font style="font-family:inherit;font-size:10pt;">$5.6 million</font><font style="font-family:inherit;font-size:10pt;"> in the condensed consolidated statements of income for the </font><font style="font-family:inherit;font-size:10pt;">thirteen and twenty-six</font><font style="font-family:inherit;font-size:10pt;"> week periods ended </font><font style="font-family:inherit;font-size:10pt;">March 31, 2018</font><font style="font-family:inherit;font-size:10pt;">. The following is the summarized operating results for Schroth for the </font><font style="font-family:inherit;font-size:10pt;">thirteen and twenty-six</font><font style="font-family:inherit;font-size:10pt;"> week periods ended </font><font style="font-family:inherit;font-size:10pt;">March 30, 2019</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">March 31, 2018</font><font style="font-family:inherit;font-size:10pt;"> (in thousands):</font></div><div style="line-height:120%;padding-bottom:8px;text-align:left;padding-left:48px;text-indent:0px;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="16" rowspan="1"></td></tr><tr><td style="width:42%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:12%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:13%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:11%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:11%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="7" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Thirteen Week Period Ended</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="7" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Twenty-six Week Period Ended</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">March 30, 2019</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">March 31, 2018</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">March 30, 2019</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">March 31, 2018</font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Net sales</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">2,679</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">11,808</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(Loss) Income from discontinued operations before income taxes</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(456</font></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">354</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Income tax benefit</font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">62</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">2,016</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(Loss) Income from discontinued operations, net of tax</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(394</font></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">2,370</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Net loss on sale of discontinued operations, net of tax</font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(5,168</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(5,168</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Loss from discontinued operations</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(5,562</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(2,798</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td></tr></table></div></div></div>

REVENUE (Tables)

REVENUE (Tables)	6 Months Ended
	Mar. 30, 2019
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Initial Application Period Cumulative Effect Transition, Explanation of Change [Table Text Block]	The cumulative effect of the changes made to our condensed consolidated balance sheet as of October 1, 2018 for the adoption of ASC 606 were as follows (in thousands): September 30, 2018 Adjustments due to ASC 606 October 1, 2018 Assets Unbilled receivables (1) $ 10,056 $ 8,272 $ 18,328 Inventories - Net 805,292 (3,977 ) 801,315 Liabilities and Stockholders' Deficit Deferred income taxes $ 399,496 $ 1,011 $ 400,507 Accumulated deficit (2,246,578 ) 3,284 (2,243,294 ) (1)

REVENUE Contract Assets and Lia

REVENUE Contract Assets and Liabilities (Tables)	6 Months Ended
	Mar. 30, 2019
Schedule of Contract Assets and Liabilities [Line Items]
Contract with Customer, Asset and Liability [Table Text Block]	The following table summarizes our contract assets and liabilities balances (in thousands): March 30, 2019 October 1, 2018 Change Contract assets, current (1) $ 66,675 18,328 $ 48,347 Contract assets, non-current (2) 118 118 — Total contract assets 66,793 18,446 48,347 Contract liabilities, current (3) 6,920 2,742 4,178 Contract liabilities, non-current (4) — — — Total contract liabilities 6,920 2,742 4,178 Net contract assets $ 59,873 $ 15,704 $ 44,169 (1) Included in prepaid expenses and other on the condensed consolidated balance sheet. (2) Included in other non-current assets on the condensed consolidated balance sheet. (3) Included in accrued liabilities on the condensed consolidated balance sheet. (4)

EARNINGS PER SHARE (TWO-CLASS_2

EARNINGS PER SHARE (TWO-CLASS METHOD) (Tables)	6 Months Ended
	Mar. 30, 2019
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Share	The following table sets forth the computation of basic and diluted earnings per share (in thousands, except per share data) using the two-class method: Thirteen Week Periods Ended Twenty-Six Week Periods Ended March 30, 2019 March 31, 2018 March 30, 2019 March 31, 2018 Numerator for earnings per share: Income from continuing operations including noncontrolling interests $ 202,632 $ 201,840 $ 398,674 $ 513,851 Net income attributable to noncontrolling interests (224 ) — (224 ) — Net income from continuing operating attributable to TD Group 202,408 201,840 398,450 513,851 Less dividends paid on participating securities — — (24,309 ) (56,148 ) 202,408 201,840 374,141 457,703 Loss from discontinued operations, net of tax — (5,562 ) — (2,798 ) Net income applicable to TD Group common stock - basic and diluted $ 202,408 $ 196,278 $ 374,141 $ 454,905 Denominator for basic and diluted earnings per share under the two-class method: Weighted-average common shares outstanding 52,979 52,229 52,886 52,127 Vested options deemed participating securities 3,286 3,376 3,379 3,472 Total shares for basic and diluted earnings per share 56,265 55,605 56,265 55,599 Net earnings per share from continuing operations - basic and diluted $ 3.60 $ 3.63 $ 6.65 $ 8.23 Net loss per share from discontinued operations - basic and diluted — (0.10 ) — (0.05 ) Net earnings per share $ 3.60 $ 3.53 $ 6.65 $ 8.18

INVENTORIES (Tables)

INVENTORIES (Tables)	6 Months Ended
	Mar. 30, 2019
Inventory Disclosure [Abstract]
Inventories	Inventories consist of the following (in thousands): March 30, 2019 September 30, 2018 Raw materials and purchased component parts $ 811,829 $ 540,290 Work-in-progress 483,198 237,335 Finished goods 263,460 127,018 Total 1,558,487 904,643 Reserves for excess and obsolete inventory (105,443 ) (99,351 ) Inventories - Net $ 1,453,044 $ 805,292

INTANGIBLE ASSETS (Tables)

INTANGIBLE ASSETS (Tables)	6 Months Ended
	Mar. 30, 2019
Acquired Finite-Lived Intangible Assets [Line Items]
Schedule of Acquired Intangible Assets by Major Class [Table Text Block]	Intangible assets acquired during the twenty-six week period ended March 30, 2019 are summarized in the table below (in thousands). As disclosed in Note 3, "Acquisitions and Divestitures," the estimated fair value of the net identifiable tangible and intangible assets acquired are based on the acquisition method of accounting and are subject to adjustment upon completion of the third-party valuation appraisals. Material adjustments may occur. The fair value of the net identifiable tangible and intangible assets acquired will be finalized within the allowable one year measurement period. Gross Amount Amortization Period Intangible assets not subject to amortization: Goodwill $ 2,439,436 Trademarks and trade names 251,700 2,691,136 Intangible assets subject to amortization: Technology 509,500 20 years Order backlog 78,000 1.5 years Customer relationships 156,000 20 years 743,500 18 years Total $ 3,434,636
Intangible Assets Subject to Amortization	Other intangible assets - net in the condensed consolidated balance sheets consist of the following (in thousands): March 30, 2019 September 30, 2018 Gross Carrying Amount Accumulated Amortization Net Gross Carrying Amount Accumulated Amortization Net Trademarks and trade names $ 1,037,533 $ — $ 1,037,533 $ 799,749 $ — $ 799,749 Technology 1,853,900 451,267 1,402,633 1,347,314 416,579 930,735 Order backlog 88,113 10,561 77,552 12,200 5,409 6,791 Customer relationships 215,986 17,013 198,973 62,561 14,277 48,284 Other 16,335 8,574 7,761 10,873 8,028 2,845 Total $ 3,211,867 $ 487,415 $ 2,724,452 $ 2,232,697 $ 444,293 $ 1,788,404
Summary of Changes in Carrying Value of Goodwill	The following is a summary of changes in the carrying value of goodwill by segment from September 30, 2018 through March 30, 2019 (in thousands): Power & Control Airframe Non- aviation Esterline Total Balance - September 30, 2018 $ 3,677,683 $ 2,452,332 $ 93,275 $ — $ 6,223,290 Goodwill acquired during the year 8,256 — — 2,431,180 2,439,436 Purchase price allocation adjustments 2,967 — — — 2,967 Currency translation adjustment — (1,631 ) — (49,746 ) (51,377 ) Balance - March 30, 2019 $ 3,688,906 $ 2,450,701 $ 93,275 $ 2,381,434 $ 8,614,316

DEBT (Tables)

DEBT (Tables)	6 Months Ended
	Mar. 30, 2019
Debt Disclosure [Abstract]
Schedule of Debt	The Company’s debt consists of the following (in thousands): March 30, 2019 Gross Amount Debt Issuance Costs Original Issue Discount or Premium Net Amount Short-term borrowings—trade receivable securitization facility $ 300,000 $ (194 ) $ — $ 299,806 Term loans $ 7,561,718 $ (63,852 ) $ (19,122 ) $ 7,478,744 5.50% senior subordinated notes due 2020 (2020 Notes) — — — — 6.00% senior subordinated notes due 2022 (2022 Notes) 1,150,000 (4,781 ) — 1,145,219 3.625% senior notes due 2023 (2023 Notes) 370,425 (2,996 ) — 367,429 6.50% senior subordinated notes due 2024 (2024 Notes) 1,200,000 (6,278 ) — 1,193,722 6.50% senior subordinated notes due 2025 (2025 Notes) 750,000 (3,241 ) 3,363 750,122 6.375% senior subordinated notes due 2026 (6.375% 2026 Notes) 950,000 (7,294 ) — 942,706 6.875% senior subordinated notes due 2026 (6.875% 2026 Notes) 500,000 (5,511 ) (3,371 ) 491,118 6.25% secured notes due 2026 (2026 Secured Notes) 4,000,000 (62,479 ) 1,953 3,939,474 7.50% senior subordinated notes due 2027 (2027 Notes) 550,000 (5,312 ) — 544,688 Government refundable advances 38,663 — — 38,663 Capital lease obligations 65,458 — — 65,458 17,136,264 (161,744 ) (17,177 ) 16,957,343 Less current portion 451,738 (3,576 ) — 448,162 Long-term debt $ 16,684,526 $ (158,168 ) $ (17,177 ) $ 16,509,181 September 30, 2018 Gross Amount Debt Issuance Costs Original Issue Discount or Premium Net Amount Short-term borrowings—trade receivable securitization facility $ 300,000 $ (481 ) $ — $ 299,519 Term loans $ 7,599,932 $ (69,697 ) $ (21,030 ) $ 7,509,205 5.50% 2020 Notes 550,000 (2,187 ) — 547,813 6.00% 2022 Notes 1,150,000 (5,501 ) — 1,144,499 6.50% 2024 Notes 1,200,000 (6,866 ) — 1,193,134 6.50% 2025 Notes 750,000 (3,505 ) 3,636 750,131 6.375% 2026 Notes 950,000 (7,798 ) — 942,202 6.875% 2026 Notes 500,000 (5,616 ) (3,605 ) 490,779 12,699,932 (101,170 ) (20,999 ) 12,577,763 Less current portion 76,427 (610 ) — 75,817 Long-term debt $ 12,623,505 $ (100,560 ) $ (20,999 ) $ 12,501,946

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	6 Months Ended
	Mar. 30, 2019
Fair Value Disclosures [Abstract]
Carrying Amounts and Fair Values of Financial Instruments	The following summarizes the carrying amounts and fair values of financial instruments (in thousands): March 30, 2019 September 30, 2018 Level Carrying Amount Fair Value Carrying Amount Fair Value Assets: Cash and cash equivalents 1 $ 2,441,336 $ 2,441,336 $ 2,073,017 $ 2,073,017 Restricted cash 1 387,566 387,566 — — Interest rate cap agreements (1) 2 9,353 9,353 36,160 36,160 Interest rate swap agreements (2) 2 6,569 6,569 11,634 11,634 Interest rate swap agreements (1) 2 597 597 61,126 61,126 Foreign currency forward exchange contracts and other (2) 2 2,352 2,352 — — Foreign currency forward exchange contracts and other (1) 2 2,433 2,433 — — Liabilities: Interest rate swap agreements (3) 2 1,160 1,160 528 528 Interest rate swap agreements (4) 2 86,128 86,128 142 142 Foreign currency forward exchange contracts and other (3) 2 12,129 12,129 — — Foreign currency forward exchange contracts and other (4) 2 1,754 1,754 — — Short-term borrowings - trade receivable securitization facility (5) 1 299,806 299,806 299,519 299,519 Long-term debt, including current portion: Term loans (5) 2 7,478,744 7,344,009 7,509,205 7,607,323 5.50% 2020 Notes (5) 1 — — 547,813 548,625 6.00% 2022 Notes (5) 1 1,145,219 1,165,813 1,144,499 1,155,750 3.625% 2023 Notes (5) 1 367,429 370,425 — — 6.50% 2024 Notes (5) 1 1,193,722 1,230,000 1,193,134 1,215,000 6.50% 2025 Notes (5) 1 750,122 757,500 750,131 757,500 6.375% 2026 Notes (5) 1 942,706 938,125 942,202 942,875 6.875% 2026 Notes (5) 1 491,118 496,250 490,779 507,500 6.25% 2026 Notes (5) 1 3,939,474 4,130,000 — — 7.50% 2027 Notes (5) 1 544,688 562,375 — — Government Refundable Advances 2 38,663 38,663 — — Capital Lease Obligations 2 65,458 65,458 — — (1) Included in other non-current assets on the condensed consolidated balance sheets. (2) Included in prepaid expenses and other on the condensed consolidated balance sheets. (3) Included in accrued liabilities on the condensed consolidated balance sheets. (4) Included in other non-current liabilities on the condensed consolidated balance sheets. (5)

DERIVATIVES AND HEDGING ACTIV_2

DERIVATIVES AND HEDGING ACTIVITIES (Tables)	6 Months Ended
	Mar. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]	The following table summarizes the Company's interest rate swap agreements: Aggregate Notional Amount (in millions) Start Date End Date Related Term Loans Conversion of Related Variable Rate Debt to Fixed Rate of: $750 3/31/2016 6/30/2020 Tranche E 5.3% (2.8% plus the 2.5% margin percentage) $500 6/29/2018 3/31/2025 Tranche E 5.5% (3.0% plus the 2.5% margin percentage) $750 6/30/2020 6/30/2022 Tranche E 5.0% (2.5% plus the 2.5% margin percentage) $1,500 6/30/2022 3/31/2025 Tranche E 5.6% (3.1% plus the 2.5% margin percentage) $1,000 9/30/2014 6/28/2019 Tranche F 4.9% (2.4% plus the 2.5% margin percentage) $1,000 6/28/2019 6/30/2021 Tranche F 4.3% (1.8% plus the 2.5% margin percentage) $1,400 6/30/2021 3/31/2023 Tranche F 5.5% (3.0% plus the 2.5% margin percentage) $500 12/30/2016 12/31/2021 Tranche G 4.4% (1.9% plus the 2.5% margin percentage) $400 9/30/2017 9/30/2022 Tranche G 4.4% (1.9% plus the 2.5% margin percentage) $900 12/31/2021 6/28/2024 Tranche G 5.6% (3.1% plus the 2.5% margin percentage) $400 9/30/2022 6/28/2024 Tranche G 5.5% (3.0% plus the 2.5% margin percentage) The following table summarizes the Company's interest rate cap agreements: Aggregate Notional Amount Start Date End Date Related Term Loans Offsets Variable Rate Debt Attributable to Fluctuations Above: $750 9/30/2015 6/30/2020 Tranche E Three month LIBO rate of 2.5% $750 6/30/2020 6/30/2022 Tranche E Three month LIBO rate of 2.5% $400 6/30/2016 6/30/2021 Tranche F Three month LIBO rate of 2.0% $400 12/30/2016 12/31/2021 Tranche G Three month LIBO rate of 2.5%
Schedule of Interest Rate Derivatives	March 30, 2019 September 30, 2018 Asset Liability Asset Liability Interest rate cap agreements $ 9,353 $ — $ 36,160 $ — Interest rate swap agreements 18,803 (98,925 ) 72,090 — Total 28,156 (98,925 ) 108,250 — Effect of counterparty netting (11,637 ) 11,637 670 (670 ) Net derivatives as classified in the balance sheet (1) $ 16,519 $ (87,288 ) $ 108,920 $ (670 ) (1)

SEGMENTS (Tables)

SEGMENTS (Tables)	6 Months Ended
	Mar. 30, 2019
Segment Reporting [Abstract]
Net Sales by Reportable Segments	The following table presents net sales by reportable segment (in thousands): Thirteen Week Periods Ended Twenty-Six Week Periods Ended March 30, 2019 March 31, 2018 March 30, 2019 March 31, 2018 Net sales to external customers Power & Control Commercial OEM 129,067 121,290 261,668 236,883 Commercial Aftermarket 181,397 169,687 338,904 319,203 Defense 290,263 237,483 560,464 455,092 Total Power & Control $ 600,727 $ 528,460 $ 1,161,036 $ 1,011,178 Airframe Commercial OEM 151,203 124,641 284,349 231,142 Commercial Aftermarket 192,424 173,582 369,458 331,819 Defense 92,862 71,560 181,502 140,214 Total Airframe 436,489 369,783 835,309 703,175 Total Non-aviation 36,736 34,827 70,909 66,677 Total Esterline 121,986 — 121,986 — $ 1,195,938 $ 933,070 $ 2,189,240 $ 1,781,030
EBITDA Defined by Segment to Consolidated Income Before Taxes	The following table reconciles EBITDA As Defined by segment to consolidated income from continuing operations before income taxes (in thousands): Thirteen Week Periods Ended Twenty-Six Week Periods Ended March 30, 2019 March 31, 2018 March 30, 2019 March 31, 2018 EBITDA As Defined Power & Control $ 320,783 $ 275,562 $ 620,716 $ 520,337 Airframe 224,019 186,006 415,499 344,425 Non-aviation 11,895 10,321 22,614 19,317 Esterline 26,656 — 26,656 — Total segment EBITDA As Defined 583,353 471,889 1,085,485 884,079 Unallocated corporate expenses 11,595 8,766 27,039 19,423 Total Company EBITDA As Defined 571,758 463,123 1,058,446 864,656 Depreciation and amortization expense 40,808 30,970 76,226 61,609 Interest expense - net 201,409 161,266 373,409 322,199 Acquisition-related costs 38,327 4,485 50,066 6,559 Stock compensation expense 20,543 11,590 38,273 22,703 Refinancing costs 3,298 638 3,434 1,751 Other, net 189 6,987 90 11,684 Income from continuing operations before income taxes $ 267,184 $ 247,187 $ 516,948 $ 438,151
Total Assets by Segment	The following table presents total assets by segment (in thousands): March 30, 2019 September 30, 2018 Total assets Power & Control $ 5,838,066 $ 5,698,524 Airframe 4,132,468 4,091,011 Non-aviation 190,305 234,770 Esterline 5,801,611 — Corporate 1,834,706 2,173,162 $ 17,797,156 $ 12,197,467

ACCUMULATED OTHER COMPREHENSI_2

ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)	6 Months Ended
	Mar. 30, 2019
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Loss	The following table presents the components of accumulated other comprehensive (loss) income, net of taxes, for the twenty-six week period ended March 30, 2019 (in thousands): Unrealized (loss) gain on derivatives designated and qualifying as cash flow hedges (1) Defined benefit pension plan activity (2) Currency translation adjustment Total Balance at September 30, 2018 $ 67,191 $ (10,729 ) $ (52,362 ) $ 4,100 Current-period other comprehensive (loss) gain (139,006 ) 131 (24,149 ) (163,024 ) Amounts reclassified from AOCI related to derivative instruments 1,887 — — 1,887 Balance at March 30, 2019 $ (69,928 ) $ (10,598 ) $ (76,511 ) $ (157,037 ) (1) Unrealized (loss) gain represents derivative instruments, net of taxes of $19,210 and $(14,290) for the thirteen week periods ended March 30, 2019 and March 31, 2018 , respectively and $41,480 and $(24,725) for the twenty-six week period s ended March 30, 2019 and March 31, 2018 , respectively. (2) Defined benefit pension plan and other postretirement plan activity represents pension liability adjustments, net of taxes of $(51) for the thirteen and twenty-six week periods ended March 30, 2019
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]	A summary of reclassifications out of accumulated other comprehensive (loss) income for the twenty-six week period s ended March 30, 2019 and March 31, 2018 is provided below (in thousands): Amount reclassified Twenty-Six Week Periods Ended Description of reclassifications out of accumulated other comprehensive (loss) income March 30, 2019 March 31, 2018 Amortization from redesignated interest rate swap and cap agreements (1) $ 1,461 $ 2,213 Losses from settlement of foreign currency forward exchange contracts (2) 1,005 — Deferred tax benefit on reclassifications out of accumulated other comprehensive (loss) income (579 ) (566 ) Losses reclassified into earnings, net of tax $ 1,887 $ 1,647 (1) This component of accumulated other comprehensive (loss) income is included in interest expense (see Note 12, “Derivatives and Hedging Activities,” for additional information). (2)

SUPPLEMENTAL GUARANTOR INFORM_2

SUPPLEMENTAL GUARANTOR INFORMATION (Tables)	6 Months Ended
	Mar. 30, 2019
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Supplemental Condensed Consolidating Balance Sheet	TRANSDIGM GROUP INCORPORATED CONDENSED CONSOLIDATING BALANCE SHEET AS OF MARCH 30, 2019 (Amounts in thousands) TransDigm Group TransDigm Inc. TransDigm UK Subsidiary Guarantors Non- Guarantor Subsidiaries Eliminations Total Consolidated ASSETS CURRENT ASSETS: Cash and cash equivalents $ 143 $ 1,412,477 $ 268 $ (9,432 ) $ 1,037,880 $ — $ 2,441,336 Restricted cash — — — — 387,566 — 387,566 Trade accounts receivable - Net — — — 226,948 914,507 (206 ) 1,141,249 Inventories - Net — 48,057 — 935,060 483,481 (13,554 ) 1,453,044 Prepaid expenses and other — 60,143 — 62,136 50,055 — 172,334 Total current assets 143 1,520,677 268 1,214,712 2,873,489 (13,760 ) 5,595,529 INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES (1,491,921 ) 20,091,568 1,108,369 9,532,453 3,872,214 (33,112,683 ) — PROPERTY, PLANT AND EQUIPMENT - NET — 47,827 — 464,012 225,760 — 737,599 GOODWILL — 82,924 — 5,984,217 2,547,175 — 8,614,316 OTHER INTANGIBLE ASSETS - NET — 25,908 — 1,692,863 1,005,681 — 2,724,452 DEFERRED INCOME TAXES — — — 7 38,965 — 38,972 OTHER — 34,347 — 28,757 23,184 — 86,288 TOTAL ASSETS $ (1,491,778 ) $ 21,803,251 $ 1,108,637 $ 18,917,021 $ 10,586,468 $ (33,126,443 ) $ 17,797,156 LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY CURRENT LIABILITIES: Current portion of long-term debt $ — $ 75,847 $ — $ 1,712 $ 370,604 $ — $ 448,163 Short-term borrowings - trade receivable securitization facility — — — 299,806 — 299,806 Accounts payable — 22,416 — 168,195 127,975 — 318,586 Accrued liabilities — 219,766 12,891 205,790 221,191 — 659,638 Total current liabilities — 318,029 12,891 375,697 1,019,576 — 1,726,193 LONG-TERM DEBT — 15,918,829 491,118 58,242 40,992 — 16,509,181 DEFERRED INCOME TAXES — 577,615 — 19 80,541 — 658,175 OTHER NON-CURRENT LIABILITIES — 218,538 — 100,104 67,212 — 385,854 Total liabilities — 17,033,011 504,009 534,062 1,208,321 — 19,279,403 TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY (1,491,778 ) 4,770,240 604,628 18,380,603 9,370,972 (33,126,443 ) (1,491,778 ) NONCONTROLLING INTEREST — — — 2,356 7,175 — 9,531 TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY $ (1,491,778 ) $ 21,803,251 $ 1,108,637 $ 18,917,021 $ 10,586,468 $ (33,126,443 ) $ 17,797,156 TRANSDIGM GROUP INCORPORATED CONDENSED CONSOLIDATING BALANCE SHEET AS OF SEPTEMBER 30, 2018 (Amounts in thousands) TransDigm Group TransDigm Inc. TransDigm UK Subsidiary Guarantors Non- Guarantor Subsidiaries Eliminations Total Consolidated ASSETS CURRENT ASSETS: Cash and cash equivalents $ 389 $ 1,821,437 $ 125 $ (1,763 ) $ 252,829 $ — $ 2,073,017 Restricted cash — — — — — — — Trade accounts receivable - Net — — — 40,916 663,394 — 704,310 Inventories - Net — 45,262 — 648,574 115,913 (4,457 ) 805,292 Prepaid expenses and other — 16,231 — 47,020 11,417 — 74,668 Total current assets 389 1,882,930 125 734,747 1,043,553 (4,457 ) 3,657,287 INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES (1,808,860 ) 10,459,497 1,099,886 8,928,726 2,160,236 (20,839,485 ) — PROPERTY, PLANT AND EQUIPMENT - NET — 15,562 — 319,567 53,204 — 388,333 GOODWILL — 97,002 — 5,466,148 660,140 — 6,223,290 OTHER INTANGIBLE ASSETS - NET — 31,362 — 1,514,983 242,059 — 1,788,404 DEFERRED INCOME TAXES — — — — — — — OTHER — 104,633 — 29,805 5,715 — 140,153 TOTAL ASSETS $ (1,808,471 ) $ 12,590,986 $ 1,100,011 $ 16,993,976 $ 4,164,907 $ (20,843,942 ) $ 12,197,467 LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY CURRENT LIABILITIES: Current portion of long-term debt $ — $ 75,817 $ — $ — $ — $ — $ 75,817 Short-term borrowings - trade receivable securitization facility — — — — 299,519 — 299,519 Accounts payable — 18,470 — 115,735 39,398 — 173,603 Accrued liabilities — 118,600 13,274 162,618 56,951 — 351,443 Total current liabilities — 212,887 13,274 278,353 395,868 — 900,382 LONG-TERM DEBT — 12,011,166 490,780 — — — 12,501,946 DEFERRED INCOME TAXES — 345,357 — (2,329 ) 56,468 — 399,496 OTHER NON-CURRENT LIABILITIES — 77,573 — 104,829 21,712 — 204,114 Total liabilities — 12,646,983 504,054 380,853 474,048 — 14,005,938 TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY (1,808,471 ) (55,997 ) 595,957 16,613,123 3,690,859 (20,843,942 ) (1,808,471 ) NONCONTROLLING INTEREST — — — — — — — TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY $ (1,808,471 ) $ 12,590,986 $ 1,100,011 $ 16,993,976 $ 4,164,907 $ (20,843,942 ) $ 12,197,467
Supplemental Condensed Consolidating Income Statement	TRANSDIGM GROUP INCORPORATED CONDENSED CONSOLIDATING STATEMENT OF INCOME AND COMPREHENSIVE INCOME FOR THE TWENTY-SIX WEEK PERIOD ENDED MARCH 30, 2019 (Amounts in thousands) TransDigm Group TransDigm Inc. TransDigm UK Subsidiary Guarantors Non- Guarantor Subsidiaries Eliminations Total Consolidated NET SALES $ — $ 87,851 $ — $ 1,763,478 $ 398,233 $ (60,322 ) $ 2,189,240 COST OF SALES — 65,713 — 730,086 230,326 (60,322 ) 965,803 GROSS PROFIT — 22,138 — 1,033,392 167,907 — 1,223,437 SELLING AND ADMINISTRATIVE EXPENSES — 100,789 — 148,575 37,185 — 286,549 AMORTIZATION OF INTANGIBLE ASSETS — 2,043 — 35,462 5,592 — 43,097 (LOSS) INCOME FROM OPERATIONS — (80,694 ) — 849,355 125,130 — 893,791 INTEREST EXPENSE (INCOME) - NET — 377,799 9,070 (2,701 ) (10,759 ) — 373,409 REFINANCING COSTS — 3,173 261 — — — 3,434 EQUITY IN INCOME OF SUBSIDIARIES (398,450 ) (726,217 ) — — — 1,124,667 — INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES 398,450 264,551 (9,331 ) 852,056 135,889 (1,124,667 ) 516,948 INCOME TAX PROVISION — (133,899 ) — 233,647 18,526 — 118,274 INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST 398,450 398,450 (9,331 ) 618,409 117,363 (1,124,667 ) 398,674 NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS — — — — (224 ) — (224 ) NET INCOME (LOSS) FROM CONTINUING OPERATIONS ATTRIBUTABLE TO TD GROUP 398,450 398,450 (9,331 ) 618,409 117,139 (1,124,667 ) 398,450 (LOSS) INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX — — — — — — — NET INCOME (LOSS) ATTRIBUTABLE TO TD GROUP $ 398,450 $ 398,450 $ (9,331 ) $ 618,409 $ 117,139 $ (1,124,667 ) $ 398,450 OTHER COMPREHENSIVE (LOSS) INCOME, NET OF TAX (161,137 ) (122,925 ) — 11,599 (98,634 ) 209,960 (161,137 ) TOTAL COMPREHENSIVE INCOME (LOSS) $ 237,313 $ 275,525 $ (9,331 ) $ 630,008 $ 18,505 $ (914,707 ) $ 237,313 TRANSDIGM GROUP INCORPORATED CONDENSED CONSOLIDATING STATEMENT OF INCOME AND COMPREHENSIVE INCOME FOR THE TWENTY-SIX WEEK PERIOD ENDED MARCH 31, 2018 (Amounts in thousands) TransDigm Group TransDigm Inc. TransDigm UK Subsidiary Guarantors Non- Guarantor Subsidiaries Eliminations Total Consolidated NET SALES $ — $ 77,215 $ — $ 1,441,477 $ 301,750 $ (39,412 ) $ 1,781,030 COST OF SALES — 43,858 — 577,494 188,366 (39,412 ) 770,306 GROSS PROFIT — 33,357 — 863,983 113,384 — 1,010,724 SELLING AND ADMINISTRATIVE EXPENSES — 48,893 — 103,779 61,382 — 214,054 AMORTIZATION OF INTANGIBLE ASSETS — 714 — 29,709 4,146 — 34,569 (LOSS) INCOME FROM OPERATIONS — (16,250 ) — 730,495 47,856 — 762,101 INTEREST EXPENSE (INCOME) - NET — 318,138 — (2 ) 4,063 — 322,199 REFINANCING COSTS — 1,751 — — — — 1,751 EQUITY IN INCOME OF SUBSIDIARIES (511,053 ) (562,544 ) — — — 1,073,597 — INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES 511,053 226,405 — 730,497 43,793 (1,073,597 ) 438,151 INCOME TAX PROVISION — (284,648 ) — 202,265 6,683 — (75,700 ) INCOME FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST 511,053 511,053 — 528,232 37,110 (1,073,597 ) 513,851 NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS — — — — — — — NET INCOME FROM CONTINUING OPERATIONS ATTRIBUTABLE TO TD GROUP 511,053 511,053 — 528,232 37,110 (1,073,597 ) 513,851 (LOSS) INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX — — — (17,869 ) 15,071 — (2,798 ) NET INCOME ATTRIBUTABLE TO TD GROUP $ 511,053 $ 511,053 $ — $ 510,363 $ 52,181 $ (1,073,597 ) $ 511,053 OTHER COMPREHENSIVE INCOME, NET OF TAX 91,662 64,166 — 9,719 55,674 (129,559 ) 91,662 TOTAL COMPREHENSIVE INCOME $ 602,715 $ 575,219 $ — $ 520,082 $ 107,855 $ (1,203,156 ) $ 602,715
Supplemental Condensed Consolidating Cash Flow Statement	TRANSDIGM GROUP INCORPORATED CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS FOR THE TWENTY-SIX WEEK PERIOD ENDED MARCH 30, 2019 (Amounts in thousands) TransDigm Group TransDigm Inc. TransDigm UK Subsidiary Guarantors Non- Guarantor Subsidiaries Eliminations Total Consolidated NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES $ — $ (64,040 ) $ 4,424 $ 468,801 $ 34,900 $ 8,912 $ 452,997 INVESTING ACTIVITIES: Capital expenditures — (1,827 ) — (36,175 ) (5,402 ) — (43,404 ) Payments made in connection with acquisitions, net of cash acquired — (3,538,128 ) — (31,250 ) — — (3,569,378 ) Net cash used in investing activities — (3,539,955 ) — (67,425 ) (5,402 ) — (3,612,782 ) FINANCING ACTIVITIES: Intercompany activities (23,013 ) (701,197 ) (4,281 ) (407,292 ) 1,144,695 (8,912 ) — Proceeds from exercise of stock options 47,126 — — — — — 47,126 Dividend equivalent payments (24,309 ) — — — — — (24,309 ) Repayment on term loans — (38,214 ) — — — — (38,214 ) Cash tender and redemption of 2020 Notes — (550,000 ) — — — — (550,000 ) Proceeds from 2027 Notes, net — 544,578 — — — — 544,578 Proceeds from 2026 Secured Notes, net — 3,937,398 — — — — 3,937,398 Financing Fees and Other — 2,470 — (1,753 ) (2,470 ) — (1,753 ) Net cash (used in) provided by financing activities (196 ) 3,195,035 (4,281 ) (409,045 ) 1,142,225 (8,912 ) 3,914,826 EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS (50 ) — — — 894 — 844 (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH (246 ) (408,960 ) 143 (7,669 ) 1,172,617 — 755,885 CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD 389 1,821,437 125 (1,763 ) 252,829 — 2,073,017 CASH, CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD $ 143 $ 1,412,477 $ 268 $ (9,432 ) $ 1,425,446 $ — $ 2,828,902 TRANSDIGM GROUP INCORPORATED CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS FOR THE TWENTY-SIX WEEK PERIOD ENDED MARCH 31, 2018 (Amounts in thousands) TransDigm Group TransDigm Inc. TransDigm UK Subsidiary Guarantors Non- Guarantor Subsidiaries Eliminations Total Consolidated NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES $ — $ (157,892 ) $ — $ 578,789 $ 29,807 $ 2,980 $ 453,684 INVESTING ACTIVITIES: Capital expenditures — (826 ) — (27,370 ) (2,688 ) — (30,884 ) Payments made in connection with acquisitions, net of cash acquired — (50,320 ) — — — — (50,320 ) Proceeds in connection with sale of discontinued operations — 57,686 — — — — 57,686 Net cash provided by (used in) investing activities — 6,540 — (27,370 ) (2,688 ) — (23,518 ) FINANCING ACTIVITIES: Intercompany activities 42,048 571,729 — (547,932 ) (62,865 ) (2,980 ) — Proceeds from exercise of stock options 26,305 — — — — — 26,305 Special dividend and dividend equivalent payments (56,148 ) — — — — — (56,148 ) Proceeds from term loans, net — 793,042 — — — — 793,042 Repayment on term loans — (833,052 ) — — — — (833,052 ) Financing fees and other — (2,155 ) — — — — (2,155 ) Net cash provided by (used in) financing activities 12,205 529,564 — (547,932 ) (62,865 ) (2,980 ) (72,008 ) EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS — — — — 2,288 — 2,288 INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS 12,205 378,212 — 3,487 (33,458 ) — 360,446 CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD 2,416 439,473 — (203 ) 208,875 — 650,561 CASH AND CASH EQUIVALENTS, END OF PERIOD $ 14,621 $ 817,685 $ — $ 3,284 $ 175,417 $ — $ 1,011,007

DESCRIPTION OF THE BUSINESS - N

DESCRIPTION OF THE BUSINESS - Narratives (Details)	Mar. 30, 2019
Accounting Policies [Abstract]
Percentage of ownership in subsidiary	100.00%

ACQUISITIONS AND DIVESTITURES -

ACQUISITIONS AND DIVESTITURES - Narratives (Details) - USD ($)	Mar. 14, 2019	Oct. 01, 2018	Jul. 13, 2018	Apr. 24, 2018	Mar. 15, 2018	Jan. 26, 2018	Feb. 22, 2017	Mar. 30, 2019	Sep. 30, 2018	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018
Business Acquisition [Line Items]
Gross Amount								$ 17,136,264,000	$ 12,699,932,000		$ 17,136,264,000
GOODWILL								8,614,316,000	6,223,290,000		8,614,316,000
NET SALES								1,195,938,000		$ 933,070,000	2,189,240,000	$ 1,781,030,000
NET INCOME FROM CONTINUING OPERATIONS ATTRIBUTABLE TO TD GROUP								202,408,000		201,840,000	398,450,000	513,851,000
AMORTIZATION OF INTANGIBLE ASSETS								23,063,000		17,457,000	43,097,000	34,569,000
Interest Income (Expense), Net								(201,409,000)		(161,266,000)	(373,409,000)	(322,199,000)
Payments to Acquire Businesses, Net of Cash Acquired											3,569,378,000	50,320,000
Restricted cash								387,566,000	0		387,566,000
Loss from discontinued operations								0		(5,562,000)	$ 0	(2,798,000)
Minimum
Business Acquisition [Line Items]
Estimated useful life of aircraft (in years)											25 years
Maximum
Business Acquisition [Line Items]
Estimated useful life of aircraft (in years)											30 years
Esterline [Member]
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue								1,589,314,000		1,448,515,000	$ 3,065,341,000	2,776,082,000
Business Acquisition, Share Price	$ 122.50
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	$ 398,200,000
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	3,923,850,000
GOODWILL	2,431,180,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	992,000,000
NET SALES											122,000,000
NET INCOME FROM CONTINUING OPERATIONS ATTRIBUTABLE TO TD GROUP											7,500,000
AMORTIZATION OF INTANGIBLE ASSETS											3,500,000
Inventory Step-up Amortization											14,900,000
Business Acquisition, Transaction Costs								22,000,000			22,000,000
Interest Income (Expense), Net											24,500,000
Payments to Acquire Businesses, Net of Cash Acquired	3,536,300,000
Restricted cash	$ 387,600,000
Interest Expense											32,700,000
Interest income											8,200,000
Preliminary intangible asset amortization								21,200,000
Preliminary Inventory Step-up											118,700,000
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax								$ 201,754,000		$ 156,350,000	$ 387,338,000	$ 214,189,000
Business Acquisition, Pro Forma Earnings Per Share, Basic								$ 3,590		$ 2,810	$ 6,450	$ 2,840
Extant [Member]
Business Acquisition [Line Items]
Business acquisition, Intangibles, Tax Deductible Amount				$ 44,000,000
Business Acquisition Purchase Price Adjustment											$ 200,000
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net				$ 534,570,000
Tax benefit recognition period (in years)				15 years
GOODWILL				$ 406,673,000
Amount of goodwill expected to be tax deductible				0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill				$ 105,000,000
Kirkhill [Member]
Business Acquisition [Line Items]
Business Acquisition Purchase Price Adjustment											600,000
Amount of goodwill expected to be tax deductible					$ 0
Payments to Acquire Businesses, Net of Cash Acquired					$ 49,300,000
Schroth [Member]
Business Acquisition [Line Items]
Business acquisition cost							$ 89,700,000
Business Acquisition Purchase Price Adjustment											300,000
Payments to Acquire Businesses, Net of Cash Acquired							79,700,000
Business Combination, Consideration Transferred, Liabilities Incurred							$ 9,000,000				8,500,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities									500,000
NavCom [Member]
Business Acquisition [Line Items]
Tax benefit recognition period (in years)		15 years
Amount of goodwill expected to be tax deductible		$ 9,000,000
Payments to Acquire Businesses, Net of Cash Acquired		$ 27,000,000
Skandia [Member]
Business Acquisition [Line Items]
Business Acquisition Purchase Price Adjustment									$ 200,000
Amount of goodwill expected to be tax deductible			$ 0
Payments to Acquire Businesses, Net of Cash Acquired			$ 84,300,000
Discontinued Operations, Held-for-sale [Member]
Business Acquisition [Line Items]
NET SALES								$ 0		$ 2,679,000	0	$ 11,808,000
Loss from discontinued operations								$ 0		$ (5,562,000)	$ 0	$ (2,798,000)
Schroth [Member]
Business Acquisition [Line Items]
Divestiture, Sale Price						$ 61,400,000

ACQUISITIONS AND DIVESTITURES_2

ACQUISITIONS AND DIVESTITURES - Business Combinations Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Mar. 30, 2019	Mar. 14, 2019	Sep. 30, 2018	Apr. 24, 2018
Business Acquisition [Line Items]
Goodwill	$ 8,614,316		$ 6,223,290
Extant [Member]
Business Acquisition [Line Items]
Current assets, excluding cash acquired				$ 53,698
Property, plant, and equipment				4,103
Intangible assets				105,000
Goodwill				406,673
Total assets acquired				569,474
Current liabilities				9,876
Other noncurrent liabilities				25,028
Total liabilities assumed				34,904
Net assets acquired				$ 534,570
Extant [Member]
Business Acquisition [Line Items]
Current assets, excluding cash acquired		$ 1,482,442
Property, plant, and equipment		338,990
Intangible assets		992,000
Goodwill		2,431,180
Other		49,710
Total assets acquired		5,294,322
Current liabilities		843,653
Other noncurrent liabilities		526,819
Total liabilities assumed		1,370,472
Net assets acquired		$ 3,923,850

ACQUISITIONS AND DIVESTITURES_3

ACQUISITIONS AND DIVESTITURES Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
NET SALES	$ 1,195,938	$ 933,070	$ 2,189,240	$ 1,781,030
Loss from discontinued operations	0	(5,562)	0	(2,798)
Discontinued Operations, Held-for-sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
NET SALES	0	2,679	0	11,808
(Loss) Income from discontinued operations before income taxes	0	(456)	0	354
(Loss) Income from discontinued operations, net of tax	0	62	0	2,016
Loss from discontinued operations	0	(5,562)	0	(2,798)
Income (loss) from discontinued operations before gain or loss on disposal net of tax	0	(394)	0	2,370
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	$ 0	$ (5,168)	$ 0	$ (5,168)

REVENUE (Details)

REVENUE (Details) - Accounting Standards Update 2014-09 - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Dec. 29, 2018	Mar. 30, 2019
Cumulative Effect on Retained Earnings, Net of Tax	$ 3,284
Accumulated Deficit
Cumulative Effect on Retained Earnings, Net of Tax	$ 3,284	$ 3,284

REVENUE Tables (Details)

REVENUE Tables (Details) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
		Dec. 29, 2018	Mar. 30, 2019	Oct. 01, 2018		Sep. 30, 2018
Contract with Customer, Asset, Net, Current			$ 66,675	$ 18,328	[1]
Contract with Customer, Asset, Current, Increase or Decrease	[1]		48,347
Unbilled Receivables, Current	[2]			18,328		$ 10,056
Inventories - Net			1,453,044	801,315		805,292
DEFERRED INCOME TAXES			658,175	400,507		399,496
Accumulated deficit			(1,851,113)	(2,243,294)		(2,246,578)
Contract with Customer, Asset, Net, Noncurrent			118	118	[3]
Contract with customer, Asset, Non-current, Increase or Decrease	[3]		0
Contract with Customer, Asset, Net			66,793	18,446
Contract assets, Increase or Decrease			48,347
Contract with Customer, Liability, Current			6,920	2,742	[4]
Contract liabilities, Current, Increase or Decrease	[4]		4,178
Contract with Customer, Liability, Noncurrent	[5]		0
Contract liabilities, Non-current, Increase or Decrease	[5]		0
Contract with Customer, Liability			6,920	2,742
Contract Liabilities, Increase or Decrease			4,178
Net Contract Asset			59,873	$ 15,704
Net Contract Asset, Increase or Decrease			44,169
Accounting Standards Update 2014-09
Unbilled Receivables, Current	[2]					8,272
Inventories - Net						(3,977)
DEFERRED INCOME TAXES						$ 1,011
Cumulative Effect on Retained Earnings, Net of Tax		$ 3,284
Accounting Standards Update 2014-09 | Accumulated Deficit
Cumulative Effect on Retained Earnings, Net of Tax		$ 3,284	$ 3,284
[1]	Included in prepaid expenses and other on the condensed consolidated balance sheet.
[2]	Included in prepaid expenses and other on the condensed consolidated balance sheet
[3]	Included in other non-current assets on the condensed consolidated balance sheet.
[4]	Included in accrued liabilities on the condensed consolidated balance sheet.
[5]	Included in other non-current liabilities on the condensed consolidated balance sheet.

EARNINGS PER SHARE (TWO-CLASS_3

EARNINGS PER SHARE (TWO-CLASS METHOD) - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
INCOME FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS	$ 202,632	$ 201,840	$ 398,674	$ 513,851
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(224)	0	(224)	0
NET INCOME FROM CONTINUING OPERATIONS ATTRIBUTABLE TO TD GROUP	202,408	201,840	398,450	513,851
Numerator for earnings per share:
Less dividends paid on participating securities	0	0	(24,309)	(56,148)
Net Income Loss Attributable to Continuing Operations Available To Common Stockholders Basic And Vested Options Deemed Participating Securities	202,408	201,840	374,141	457,703
Loss from discontinued operations	0	(5,562)	0	(2,798)
Net income applicable to TD Group common stock - basic and diluted	$ 202,408	$ 196,278	$ 374,141	$ 454,905
Denominator for basic and diluted earnings per share under the two-class method, in shares:
Weighted-average common shares outstanding	52,979	52,229	52,886	52,127
Vested options deemed participating securities	3,286	3,376	3,379	3,472
Basic and diluted (in shares)	56,265	55,605	56,265	55,599
Net earnings per share from continuing operations - basic and diluted	$ 3.60	$ 3.63	$ 6.65	$ 8.23
Net loss per share from discontinued operations - basic and diluted	0	(0.10)	0	(0.05)
Basic and diluted earnings per share (in dollars per share)	$ 3.60	$ 3.53	$ 6.65	$ 8.18

INVENTORIES - Schedule of Inven

INVENTORIES - Schedule of Inventory (Details) - USD ($) $ in Thousands	Mar. 30, 2019	Oct. 01, 2018	Sep. 30, 2018
Inventory Disclosure [Abstract]
Raw materials and purchased component parts	$ 811,829		$ 540,290
Work-in-progress	483,198		237,335
Finished goods	263,460		127,018
Total	1,558,487		904,643
Reserves for excess and obsolete inventory	(105,443)		(99,351)
Inventories - Net	$ 1,453,044	$ 801,315	$ 805,292

INTANGIBLE ASSETS - Intangible

INTANGIBLE ASSETS - Intangible Assets Subject to Amortization (Details) - USD ($) $ in Thousands	Mar. 30, 2019	Sep. 30, 2018
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	$ 3,211,867	$ 2,232,697
Intangible Assets, Accumulated Amortization	487,415	444,293
Total	2,724,452	1,788,404
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,853,900	1,347,314
Accumulated Amortization	451,267	416,579
Net	1,402,633	930,735
Order backlog
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	88,113	12,200
Accumulated Amortization	10,561	5,409
Net	77,552	6,791
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	215,986	62,561
Accumulated Amortization	17,013	14,277
Net	198,973	48,284
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	16,335	10,873
Accumulated Amortization	8,574	8,028
Net	7,761	2,845
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill), Gross	1,037,533	799,749
Indefinite-Lived Intangible Assets, Accumulated Amortization	0	0
Intangible Assets (Excluding Goodwill), Net	$ 1,037,533	$ 799,749

INTANGIBLE ASSETS - Summary of

INTANGIBLE ASSETS - Summary of changes in carrying value of Goodwill (Details) $ in Thousands	6 Months Ended
	Mar. 30, 2019USD ($)
Goodwill [Line Items]
Goodwill, Acquired During Period	$ 2,439,436
Goodwill [Roll Forward]
Balance at beginning of period	6,223,290
Purchase price allocation adjustments	2,967
Currency translation adjustment	(51,377)
Balance at end of period	8,614,316
Power & Control
Goodwill [Line Items]
Goodwill, Acquired During Period	8,256
Goodwill [Roll Forward]
Balance at beginning of period	3,677,683
Purchase price allocation adjustments	2,967
Currency translation adjustment	0
Balance at end of period	3,688,906
Airframe
Goodwill [Line Items]
Goodwill, Acquired During Period	0
Goodwill [Roll Forward]
Balance at beginning of period	2,452,332
Purchase price allocation adjustments	0
Currency translation adjustment	(1,631)
Balance at end of period	2,450,701
Non- aviation
Goodwill [Line Items]
Goodwill, Acquired During Period	0
Goodwill [Roll Forward]
Balance at beginning of period	93,275
Purchase price allocation adjustments	0
Currency translation adjustment	0
Balance at end of period	93,275
Esterline [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	2,431,180
Goodwill [Roll Forward]
Balance at beginning of period	0
Purchase price allocation adjustments	0
Currency translation adjustment	(49,746)
Balance at end of period	$ 2,381,434

INTANGIBLE ASSETS - Narratives

INTANGIBLE ASSETS - Narratives (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 23,063	$ 17,457	$ 43,097	$ 34,569
Estimated Amortization Expense, 2019	122,200		122,200
Estimated Amortization Expense, 2020	154,200		154,200
Estimated Amortization Expense, 2021	104,200		104,200
Estimated Amortization Expense, 2022	104,200		104,200
Estimated Amortization Expense, 2023	104,200		104,200
Estimated Amortization Expense, 2024	$ 104,200		$ 104,200

INTANGIBLE ASSETS - Acquired In

INTANGIBLE ASSETS - Acquired Intangibles (Details) $ in Thousands	6 Months Ended
	Mar. 30, 2019USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill, Acquired During Period	$ 2,439,436
Indefinite-lived Intangible Assets Acquired	2,691,136
Finite-lived Intangible Assets Acquired	$ 743,500
Finite-Lived Intangible Asset, Useful Life	18 years
Intangible Assets, Acquired During the Period	$ 3,434,636
Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	$ 509,500
Finite-Lived Intangible Asset, Useful Life	20 years
Order backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	$ 78,000
Finite-Lived Intangible Asset, Useful Life	1 year 6 months
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	$ 156,000
Finite-Lived Intangible Asset, Useful Life	20 years
Goodwill [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill, Acquired During Period	$ 2,439,436
Trademarks and trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets Acquired	$ 251,700

DEBT - Schedule of Debt (Detail

DEBT - Schedule of Debt (Detail) - USD ($) $ in Thousands		Mar. 30, 2019	Feb. 01, 2019	Sep. 30, 2018
Debt Instrument [Line Items]
Gross Amount		$ 17,136,264		$ 12,699,932
Debt Issuance Costs		(161,744)		(101,170)
Debt Instrument, Unamortized Discount (Premium), Net		(17,177)		(20,999)
Short-term borrowings - trade receivable securitization facility		299,806		299,519
Total debt outstanding		16,957,343		12,577,763
Long-term Debt, Current Maturities, Net		448,163		75,817
Long-term Debt, Excluding Current Maturities, Gross		16,684,526		12,623,505
Deferred Finance Costs, Excluding Current Maturities		(158,168)		(100,560)
Debt Instrument, Unamortized Discount, Excluding Current Maturities		(17,177)		(20,999)
Long-term debt		16,509,181		12,501,946
Term loans
Debt Instrument [Line Items]
Gross Amount		7,561,718		7,599,932
Debt Issuance Costs		(63,852)		(69,697)
Debt Instrument, Unamortized Discount (Premium), Net		(19,122)		(21,030)
Total debt outstanding	[1]	$ 7,478,744		$ 7,509,205
Senior Subordinated Notes | 5.50% senior subordinated notes due 2020 (2020 Notes)
Debt Instrument [Line Items]
Interest rate		5.50%		5.50%
Gross Amount		$ 0		$ 550,000
Debt Issuance Costs		0		(2,187)
Debt Instrument, Unamortized Discount (Premium), Net		0		0
Total debt outstanding	[1]	$ 0		$ 547,813
Senior Subordinated Notes | 6.00% senior subordinated notes due 2022 (2022 Notes)
Debt Instrument [Line Items]
Interest rate		6.00%		6.00%
Gross Amount		$ 1,150,000		$ 1,150,000
Debt Issuance Costs		(4,781)		(5,501)
Debt Instrument, Unamortized Discount (Premium), Net		0		0
Total debt outstanding	[1]	$ 1,145,219		$ 1,144,499
Senior Subordinated Notes | 6.50% senior subordinated notes due 2024 (2024 Notes)
Debt Instrument [Line Items]
Interest rate		6.50%		6.50%
Gross Amount		$ 1,200,000		$ 1,200,000
Debt Issuance Costs		(6,278)		(6,866)
Debt Instrument, Unamortized Discount (Premium), Net		0		0
Total debt outstanding	[1]	$ 1,193,722		$ 1,193,134
Senior Subordinated Notes | 6.50% senior subordinated notes due 2025 (2025 Notes)
Debt Instrument [Line Items]
Interest rate		6.50%		6.50%
Gross Amount		$ 750,000		$ 750,000
Debt Issuance Costs		(3,241)		(3,505)
Debt Instrument, Unamortized Discount (Premium), Net		3,363		3,636
Total debt outstanding	[1]	$ 750,122		$ 750,131
Senior Subordinated Notes | 6.375% senior subordinated notes due 2026 (6.375% 2026 Notes)
Debt Instrument [Line Items]
Interest rate		6.375%		6.375%
Gross Amount		$ 950,000		$ 950,000
Debt Issuance Costs		(7,294)		(7,798)
Debt Instrument, Unamortized Discount (Premium), Net		0		0
Total debt outstanding	[1]	$ 942,706		$ 942,202
Senior Subordinated Notes | 6.875% senior subordinated noted due 2026 [Member]
Debt Instrument [Line Items]
Interest rate		6.875%		6.875%
Gross Amount		$ 500,000		$ 500,000
Debt Issuance Costs		(5,511)		(5,616)
Debt Instrument, Unamortized Discount (Premium), Net		(3,371)		(3,605)
Total debt outstanding	[1]	491,118		490,779
Senior Subordinated Notes | Senior Subordinated Notes $550M Due 2027 7.50% [Member]
Debt Instrument [Line Items]
Interest rate			7.50%
Gross Amount		550,000	$ 550,000
Debt Issuance Costs		(5,312)
Debt Instrument, Unamortized Discount (Premium), Net		0
Total debt outstanding	[1]	544,688		0
Senior Notes | 3.625% Senior Notes Due 2023 [Member]
Debt Instrument [Line Items]
Gross Amount		370,425
Debt Issuance Costs		(2,996)
Debt Instrument, Unamortized Discount (Premium), Net		0
Total debt outstanding	[1]	367,429		0
Senior Notes | Senior Secured Notes $4B Due 2026 6.25% [Member]
Debt Instrument [Line Items]
Gross Amount		4,000,000
Debt Issuance Costs		(62,479)
Debt Instrument, Unamortized Discount (Premium), Net		1,953
Total debt outstanding		3,939,474
Government Refundable Advances [Member]
Debt Instrument [Line Items]
Debt Issuance Costs		0
Debt Instrument, Unamortized Discount (Premium), Net		0
Government refundable advances		38,663		0
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Debt Issuance Costs		0
Debt Instrument, Unamortized Discount (Premium), Net		0
Capital Lease Obligations		65,458		0
Asset-backed Securities
Debt Instrument [Line Items]
Short-term borrowings—trade receivable securitization facility, Gross		300,000		300,000
Debt Issuance Costs		(194)		(481)
Debt Instrument, Unamortized Discount (Premium), Net		0		0
Short-term borrowings - trade receivable securitization facility	[1]	299,806		299,519
Less current portion
Debt Instrument [Line Items]
Debt Issuance Costs		(3,576)		(610)
Debt Instrument, Unamortized Discount (Premium), Net				0
Original Issue Discount or Premium		0
Long-term Debt, Current Maturities, Gross		451,738		76,427
Long-term Debt, Current Maturities, Net		$ 448,162		$ 75,817
[1]	The carrying amount of the debt instrument is presented net of debt issuance costs, premium and discount. Refer to Note 9, "Debt," for gross carrying amounts.

DEBT - Narratives (Details)

DEBT - Narratives (Details) - USD ($)	Apr. 15, 2019	Feb. 01, 2019	Jan. 30, 2019	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018	Mar. 15, 2019	Mar. 14, 2019	Sep. 30, 2018
Debt Instrument [Line Items]
Interest Payable, Current				$ 124,200,000		$ 124,200,000				$ 96,600,000
Gross Amount				17,136,264,000		17,136,264,000				12,699,932,000
Refinancing Costs				3,298,000	$ 638,000	3,434,000	$ 1,751,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Remaining Borrowing Capacity				726,300,000		726,300,000
Debt Instrument, Increase in Face Amount									$ 160,000,000
Line of Credit Facility, Maximum Borrowing Capacity				760,000,000		760,000,000
Letters of Credit Outstanding, Amount				33,700,000		33,700,000
Multi-currency Revolving Commitment [Member]
Debt Instrument [Line Items]
Debt Instrument, Increase in Face Amount									$ 52,100,000
Line of Credit Facility, Maximum Borrowing Capacity				151,500,000		151,500,000
Secured Debt [Member] | Senior Secured Notes $3.8B Due 2026 6.25% [Member]
Debt Instrument [Line Items]
Gross Amount			$ 3,800,000,000
Debt Instrument, Redemption Price, Percentage			100.00%
Interest rate			6.25%
Secured Debt [Member] | Senior Secured Notes $200M Due 2026 6.25% [Member]
Debt Instrument [Line Items]
Gross Amount		$ 200,000,000		200,000,000		200,000,000
Debt Instrument, Redemption Price, Percentage		101.00%
Interest rate		6.25%
Debt Instrument, Unamortized Premium				2,000,000		2,000,000
Secured Debt [Member] | Senior Secured Notes $4B Due 2026 6.25% [Member]
Debt Instrument [Line Items]
Gross Amount		$ 4,000,000,000
Interest rate		6.25%
Refinancing Costs						700,000
Debt Issuance Costs, Gross				63,900,000		63,900,000
Senior Subordinated Notes | 6.875% senior subordinated noted due 2026 [Member]
Debt Instrument [Line Items]
Gross Amount				$ 500,000,000		$ 500,000,000				$ 500,000,000
Interest rate				6.875%		6.875%				6.875%
Senior Subordinated Notes | Senior Subordinated Notes $550M Due 2027 7.50% [Member]
Debt Instrument [Line Items]
Gross Amount		$ 550,000,000		$ 550,000,000		$ 550,000,000
Interest rate		7.50%
Debt Instrument, Unamortized Premium				5,400,000		5,400,000
Senior Subordinated Notes | 5.50% senior subordinated notes due 2020 (2020 Notes)
Debt Instrument [Line Items]
Gross Amount				$ 0		$ 0				$ 550,000,000
Interest rate				5.50%		5.50%				5.50%
Debt Instrument, Repurchased Face Amount								$ 550,000,000
Debt Instrument, Repurchase Amount								$ 12,600,000
Write off of Deferred Debt Issuance Cost						$ 1,700,000
Term loans
Debt Instrument [Line Items]
Gross Amount				$ 7,561,718,000		7,561,718,000				$ 7,599,932,000
Government Refundable Advances [Member]
Debt Instrument [Line Items]
Government refundable advances				38,663,000		38,663,000				0
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Capital Lease Obligations				$ 65,458,000		$ 65,458,000				$ 0
Subsequent Event [Member] | 3.625% Senior Notes Due 2023 [Member]
Debt Instrument [Line Items]
Interest Payable, Current	$ 6,800,000
Restricted Cash and Investments, Current	387,600,000
Senior Notes, Current	373,800,000
Early Redemption Premium	6,800,000
Fees and Commissions	200,000
Euro Member Countries, Euro | Subsequent Event [Member] | 3.625% Senior Notes Due 2023 [Member]
Debt Instrument [Line Items]
Senior Notes, Current	$ 330,000,000

INCOME TAXES - Narratives (Deta

INCOME TAXES - Narratives (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018	Sep. 30, 2018
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%
Effective income tax rate	24.20%	18.30%	22.90%	(17.30%)
Unrecognized tax benefits	$ 20.4		$ 20.4		$ 14.1
Tax rate effect	18.6		18.6		$ 13.1
Reduction in tax position in next 12 months	$ 2.3		$ 2.3

FAIR VALUE MEASUREMENTS - Carry

FAIR VALUE MEASUREMENTS - Carrying Amounts and Fair Values of Financial Instruments (Detail) - USD ($)		Mar. 30, 2019	Sep. 30, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents		$ 2,441,336,000	$ 2,073,017,000
Restricted Cash		387,566,000	0
Short-term borrowings - trade receivable securitization facility		299,806,000	299,519,000
Long-term Debt		16,957,343,000	12,577,763,000
Other Noncurrent Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest Rate Cash Flow Hedge Asset at Carrying Value	[1]	9,353,000	36,160,000
Interest rate cap agreements	[1]	597,000	61,126,000
Foreign Currency Contract, Asset		2,433,000	0
Prepaid Expenses and Other Current Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate cap agreements	[2]	6,569,000	11,634,000
Foreign Currency Contract, Asset		2,352,000	0
Accrued Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap agreements	[3]	1,160,000	528,000
Foreign Currency Contracts, Liability		12,129,000	0
Other Noncurrent Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap agreements	[4]	86,128,000	142,000
Foreign Currency Contracts, Liability		1,754,000	0
Term loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	7,478,744,000	7,509,205,000
Government Refundable Advances [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Government refundable advances		38,663,000	0
Capital Lease Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Capital Lease Obligations		65,458,000	0
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, Fair Value		2,441,336,000	2,073,017,000
Restricted Cash, Fair Value		387,566,000	0
Level 2 | Other Noncurrent Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate cap agreements, Fair Value	[1]	9,353,000	36,160,000
Interest Rate Swap Asset at Fair Value	[1]	597,000	61,126,000
Foreign Currency Contract, Asset, Fair Value Disclosure		2,433,000	0
Level 2 | Prepaid Expenses and Other Current Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest Rate Swap Asset at Fair Value	[2]	6,569,000	11,634,000
Foreign Currency Contract, Asset, Fair Value Disclosure		2,352,000	0
Level 2 | Accrued Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap agreements, Fair Value	[3]	1,160,000	528,000
Foreign Currency Contracts, Liability, Fair Value Disclosure		12,129,000	0
Level 2 | Other Noncurrent Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap agreements, Fair Value	[4]	86,128,000	142,000
Foreign Currency Contracts, Liability, Fair Value Disclosure		1,754,000	0
Level 2 | Term loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value		7,344,009,000	7,607,323,000
Level 2 | Capital Lease Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Government Refundable Advances, Fair Value		38,663,000	0
Capital Lease Obligations, Fair Value		65,458,000	0
5.50% senior subordinated notes due 2020 (2020 Notes) | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	0	547,813,000
5.50% senior subordinated notes due 2020 (2020 Notes) | Level 1 | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value		0	548,625,000
6.00% senior subordinated notes due 2022 (2022 Notes) | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	1,145,219,000	1,144,499,000
6.00% senior subordinated notes due 2022 (2022 Notes) | Level 1 | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value		1,165,813,000	1,155,750,000
3.625% Senior Notes Due 2023 [Member] | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	367,429,000	0
3.625% Senior Notes Due 2023 [Member] | Level 1 | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value		370,425,000	0
6.50% senior subordinated notes due 2024 (2024 Notes) | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	1,193,722,000	1,193,134,000
6.50% senior subordinated notes due 2024 (2024 Notes) | Level 1 | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value		1,230,000,000	1,215,000,000
6.50% senior subordinated notes due 2025 (2025 Notes) | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	750,122,000	750,131,000
6.50% senior subordinated notes due 2025 (2025 Notes) | Level 1 | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value		757,500,000	757,500,000
6.375% senior subordinated notes due 2026 (6.375% 2026 Notes) | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	942,706,000	942,202,000
6.375% senior subordinated notes due 2026 (6.375% 2026 Notes) | Level 1 | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value		938,125,000	942,875,000
6.875% senior subordinated noted due 2026 [Member] | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	491,118,000	490,779,000
6.875% senior subordinated noted due 2026 [Member] | Level 1 | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value		496,250,000	507,500,000
Senior Secured Notes $4B Due 2026 6.25% [Member] | Secured Debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	3,939,474,000	0
Senior Secured Notes $4B Due 2026 6.25% [Member] | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt		3,939,474,000
Senior Secured Notes $4B Due 2026 6.25% [Member] | Level 1 | Secured Debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value		4,130,000,000	0
Senior Subordinated Notes $550M Due 2027 7.50% [Member] | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	544,688,000	0
Senior Subordinated Notes $550M Due 2027 7.50% [Member] | Level 1 | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value		562,375,000	0
Asset-backed Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings - trade receivable securitization facility	[5]	299,806,000	299,519,000
Asset-backed Securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings - trade receivable securitization facility, Fair Value		$ 299,806,000	$ 299,519,000	[5]
[1]	Included in other non-current assets on the condensed consolidated balance sheets.
[2]	Included in prepaid expenses and other on the condensed consolidated balance sheets.
[3]	Included in accrued liabilities on the condensed consolidated balance sheets.
[4]	Included in other non-current liabilities on the condensed consolidated balance sheets.
[5]	The carrying amount of the debt instrument is presented net of debt issuance costs, premium and discount. Refer to Note 9, "Debt," for gross carrying amounts.

DERIVATIVES AND HEDGING ACTIV_3

DERIVATIVES AND HEDGING ACTIVITIES - Schedule of Notional Amounts of Outstanding Derivatives (Details) - USD ($) $ in Thousands		6 Months Ended
		Mar. 30, 2019	Mar. 31, 2018
Tranche F | Interest Rate Swap
Derivative [Line Items]
Derivative, Notional Amount		$ 1,000,000
Derivative, Fixed Interest Rate		4.90%
Derivative, Variable Interest Rate		2.40%
Derivative, Basis Spread on Variable Rate		2.50%
Tranche F | Interest rate swap June 28, 2016 [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 1,000,000
Tranche F | Interest rate swap beginning June 30, 2021 [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 1,400,000
Derivative, Fixed Interest Rate		5.50%
Derivative, Variable Interest Rate		3.00%
Derivative, Basis Spread on Variable Rate		2.50%
Tranche F | Interest Rate Cap
Derivative [Line Items]
Derivative, Cap Interest Rate		2.50%
Tranche F | Interest rate cap agreements beginning June 30, 2016 [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 400,000
Derivative, Cap Interest Rate		2.00%
Tranche E | Interest rate cap beginning September 30, 2015 [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 750,000
Derivative, Cap Interest Rate		2.50%
Tranche E | Interest rate cap beginning June 30, 2020 [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 750,000
Tranche E | Interest rate swap beginning March 31, 2016 [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 750,000
Derivative, Fixed Interest Rate		5.30%
Derivative, Variable Interest Rate		2.80%
Derivative, Basis Spread on Variable Rate		2.50%
Tranche E | Interest rate swap beginning June 29, 2018 [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 500,000
Derivative, Fixed Interest Rate		5.50%
Derivative, Variable Interest Rate		3.00%
Derivative, Basis Spread on Variable Rate		2.50%
Tranche E | Interest rate swap beginning June 30, 2020 [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 750,000
Derivative, Fixed Interest Rate		5.00%
Derivative, Variable Interest Rate		2.50%
Derivative, Basis Spread on Variable Rate		2.50%
Tranche E | Interest rate swap beginning June 30, 2022 [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 1,500,000
Derivative, Fixed Interest Rate		5.60%
Derivative, Variable Interest Rate		3.10%
Derivative, Basis Spread on Variable Rate		2.50%
Tranche G [Member] | Interest Rate Swap
Derivative [Line Items]
Derivative, Notional Amount		$ 500,000
Derivative, Fixed Interest Rate		4.40%
Derivative, Variable Interest Rate		1.90%
Derivative, Basis Spread on Variable Rate		2.50%
Tranche G [Member] | Interest Rate Cap
Derivative [Line Items]
Derivative, Notional Amount		$ 400,000
Tranche G [Member] | Interest rate swap beginning September 30, 2017 [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 400,000
Derivative, Fixed Interest Rate		4.40%
Derivative, Variable Interest Rate		1.90%
Derivative, Basis Spread on Variable Rate		2.50%
Tranche G [Member] | Interest rate swap beginning December 31, 2021 [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 900,000
Derivative, Fixed Interest Rate		5.60%
Derivative, Variable Interest Rate		3.10%
Derivative, Basis Spread on Variable Rate		2.50%
Tranche G [Member] | Interest rate swap beginning September 30, 2022 [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 400,000
Derivative, Fixed Interest Rate		5.50%
Derivative, Variable Interest Rate		3.00%
Derivative, Basis Spread on Variable Rate		2.50%
Unrealized (loss) gain on derivatives designated and qualifying as cash flow hedges (1) | Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative [Line Items]
Interest Expense	[1]	$ (1,461)	$ (2,213)
[1]	This component of accumulated other comprehensive (loss) income is included in interest expense (see Note 12, “Derivatives and Hedging Activities,” for additional information).

DERIVATIVES AND HEDGING ACTIV_4

DERIVATIVES AND HEDGING ACTIVITIES - Schedule of Interest Rate Derivatives (Details) - USD ($) $ in Thousands		Mar. 30, 2019	Sep. 30, 2018
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset		$ 28,156	$ 108,250
Derivative Asset, Fair Value, Gross Liability		(98,925)	0
Derivative Asset, Collateral, Obligation to Return Cash, Offset		11,637	670
Derivative Liability, Collateral, Right to Reclaim Cash, Offset		11,637	(670)
Derivative Asset	[1]	16,519	108,920
Derivative Liability	[1]	87,288	670
Interest Rate Cap
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset		9,353	36,160
Derivative Asset, Fair Value, Gross Liability		0	0
Interest Rate Swap
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset		18,803	72,090
Derivative Asset, Fair Value, Gross Liability		$ (98,925)	$ 0
[1]	Refer to Note 11, "Fair Value Measurements," for the condensed consolidated balance sheet classification of our interest rate swap and cap agreements.

DERIVATIVES AND HEDGING ACTIV_5

DERIVATIVES AND HEDGING ACTIVITIES - Narratives (Details) - USD ($) $ in Thousands		6 Months Ended
		Mar. 30, 2019	Mar. 31, 2018
Unrealized (loss) gain on derivatives designated and qualifying as cash flow hedges (1) | Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative [Line Items]
Interest Expense	[1]	$ (1,461)	$ (2,213)
December 30, 2017 Redesignation [Member] | Unrealized (loss) gain on derivatives designated and qualifying as cash flow hedges (1) | Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative [Line Items]
Interest Expense		500	300
September 30, 2016 Redesignation [Member] | Unrealized (loss) gain on derivatives designated and qualifying as cash flow hedges (1) | Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative [Line Items]
Interest Expense		2,300	$ 2,000
March 31, 2018 Redesignation [Member] | Unrealized (loss) gain on derivatives designated and qualifying as cash flow hedges (1) | Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative [Line Items]
Interest Income, Other		$ 1,400
Interest Rate Swap and Cap
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimate of Time to Transfer		12 months
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred		$ (800)
Interest Rate Cap
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Gross Amount to be Transferred		8,700
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Tax to be Transferred		$ 2,000
Interest Rate Cap | Tranche F
Derivative [Line Items]
Derivative, Cap Interest Rate		2.50%
Interest Rate Cap | Tranche G [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 400,000
Interest rate swap beginning June 30, 2020 [Member] | Tranche E
Derivative [Line Items]
Derivative, Notional Amount		$ 750,000
Derivative, Fixed Interest Rate		5.00%
Derivative, Variable Interest Rate		2.50%
Derivative, Basis Spread on Variable Rate		2.50%
Interest rate cap beginning September 30, 2015 [Member] | Tranche E
Derivative [Line Items]
Derivative, Notional Amount		$ 750,000
Derivative, Cap Interest Rate		2.50%
Interest rate cap agreements beginning June 30, 2016 [Member] | Tranche F
Derivative [Line Items]
Derivative, Notional Amount		$ 400,000
Derivative, Cap Interest Rate		2.00%
Interest Rate Swap | Tranche F
Derivative [Line Items]
Derivative, Notional Amount		$ 1,000,000
Derivative, Fixed Interest Rate		4.90%
Derivative, Variable Interest Rate		2.40%
Derivative, Basis Spread on Variable Rate		2.50%
Interest Rate Swap | Tranche G [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 500,000
Derivative, Fixed Interest Rate		4.40%
Derivative, Variable Interest Rate		1.90%
Derivative, Basis Spread on Variable Rate		2.50%
Interest Rate Swap | December 30, 2017 Redesignation [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Gross Amount to be Transferred		$ 1,200
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Tax to be Transferred		300
Interest Rate Swap | March 31, 2018 Redesignation [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Gross Amount to be Transferred		10,000
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Tax to be Transferred		2,400
Interest rate swap beginning September 30, 2017 [Member] | Tranche G [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 400,000
Derivative, Fixed Interest Rate		4.40%
Derivative, Variable Interest Rate		1.90%
Derivative, Basis Spread on Variable Rate		2.50%
Interest rate swap June 28, 2016 [Member] | Tranche F
Derivative [Line Items]
Derivative, Fixed Interest Rate		4.30%
Derivative, Variable Interest Rate		1.80%
Derivative, Basis Spread on Variable Rate		2.50%
Interest rate swap beginning March 31, 2016 [Member] | Tranche E
Derivative [Line Items]
Derivative, Notional Amount		$ 750,000
Derivative, Fixed Interest Rate		5.30%
Derivative, Variable Interest Rate		2.80%
Derivative, Basis Spread on Variable Rate		2.50%
Foreign Exchange Forward [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 415,700
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Gross Amount to be Transferred		10,800
Cost of Sales [Member]
Derivative [Line Items]
Gain (Loss) on Fair Value Hedges Recognized in Earnings		800
Selling, General and Administrative Expenses [Member]
Derivative [Line Items]
Gain (Loss) on Fair Value Hedges Recognized in Earnings		1,000
Gain (Loss) on foreign currency contracts not designated as accounting hedges		1,800
Sales [Member]
Derivative [Line Items]
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net		$ 1,000
[1]	This component of accumulated other comprehensive (loss) income is included in interest expense (see Note 12, “Derivatives and Hedging Activities,” for additional information).

SEGMENTS - Narratives (Details)

SEGMENTS - Narratives (Details)	6 Months Ended
	Mar. 30, 2019Segment
Segment Reporting [Abstract]
Number of reporting segments	4

SEGMENTS - Net Sales by Reporta

SEGMENTS - Net Sales by Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018
Segment Reporting Information [Line Items]
Net Sales	$ 1,195,938	$ 933,070	$ 2,189,240	$ 1,781,030
Operating Segments | Power & Control
Segment Reporting Information [Line Items]
Net Sales	600,727	528,460	1,161,036	1,011,178
Operating Segments | Airframe
Segment Reporting Information [Line Items]
Net Sales	436,489	369,783	835,309	703,175
Operating Segments | Non- aviation
Segment Reporting Information [Line Items]
Net Sales	36,736	34,827	70,909	66,677
Operating Segments | Esterline [Member]
Segment Reporting Information [Line Items]
Net Sales	121,986	0	121,986	0
Commercial OEM [Member] | Operating Segments | Power & Control
Segment Reporting Information [Line Items]
Net Sales	129,067	121,290	261,668	236,883
Commercial OEM [Member] | Operating Segments | Airframe
Segment Reporting Information [Line Items]
Net Sales	151,203	124,641	284,349	231,142
Commercial Aftermarket [Member] | Operating Segments | Power & Control
Segment Reporting Information [Line Items]
Net Sales	181,397	169,687	338,904	319,203
Commercial Aftermarket [Member] | Operating Segments | Airframe
Segment Reporting Information [Line Items]
Net Sales	192,424	173,582	369,458	331,819
Defense [Member] | Operating Segments | Power & Control
Segment Reporting Information [Line Items]
Net Sales	290,263	237,483	560,464	455,092
Defense [Member] | Operating Segments | Airframe
Segment Reporting Information [Line Items]
Net Sales	$ 92,862	$ 71,560	$ 181,502	$ 140,214

SEGMENTS - EBITDA Defined by Se

SEGMENTS - EBITDA Defined by Segment to Consolidated Income Before Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	$ 571,758	$ 463,123	$ 1,058,446	$ 864,656
Interest expense - net	201,409	161,266	373,409	322,199
Stock compensation expense			38,273	22,703
Refinancing Costs	3,298	638	3,434	1,751
Income from continuing operations before income taxes	267,184	247,187	516,948	438,151
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	583,353	471,889	1,085,485	884,079
Operating Segments | Power & Control
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	320,783	275,562	620,716	520,337
Operating Segments | Airframe
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	224,019	186,006	415,499	344,425
Operating Segments | Non- aviation
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	11,895	10,321	22,614	19,317
Operating Segments | Esterline [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	26,656	0	26,656	0
Corporate, Non-Segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	11,595	8,766	27,039	19,423
Segment Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Depreciation and amortization expense	40,808	30,970	76,226	61,609
Interest expense - net	201,409	161,266	373,409	322,199
Acquisition-related costs	38,327	4,485	50,066	6,559
Stock compensation expense	20,543	11,590	38,273	22,703
Refinancing Costs	3,298	638	3,434	1,751
Other, net	$ 189	$ 6,987	$ 90	$ 11,684

SEGMENTS - Total Assets by Segm

SEGMENTS - Total Assets by Segment (Details) - USD ($) $ in Thousands	Mar. 30, 2019	Sep. 30, 2018
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 17,797,156	$ 12,197,467
Operating Segments | Power & Control
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	5,838,066	5,698,524
Operating Segments | Airframe
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	4,132,468	4,091,011
Operating Segments | Non- aviation
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	190,305	234,770
Operating Segments | Esterline [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	5,801,611	0
Corporate, Non-Segment
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,834,706	$ 2,173,162

ACCUMULATED OTHER COMPREHENSI_3

ACCUMULATED OTHER COMPREHENSIVE LOSS - Narratives (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax			$ (51)
Other Comprehensive Loss, Derivatives Qualifying as Hedges, Tax	$ 19,210	$ (14,290)	$ 41,480	$ (24,725)

ACCUMULATED OTHER COMPREHENSI_4

ACCUMULATED OTHER COMPREHENSIVE LOSS - Schedule of Accumulated Other Comprehensive Loss (Details) $ in Thousands	6 Months Ended
	Mar. 30, 2019USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	$ 4,100
Current-period other comprehensive (loss) gain	(163,024)
Amounts reclassified from AOCI related to derivative instruments	1,887
Balance at end of period	(157,037)
Unrealized (loss) gain on derivatives designated and qualifying as cash flow hedges (1)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	67,191	[1]
Current-period other comprehensive (loss) gain	(139,006)	[1]
Amounts reclassified from AOCI related to derivative instruments	(1,887)	[1]
Balance at end of period	(69,928)	[1]
Defined benefit pension plan activity (2)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(10,729)	[2]
Current-period other comprehensive (loss) gain	131	[2]
Amounts reclassified from AOCI related to derivative instruments	0	[2]
Balance at end of period	(10,598)	[2]
Currency translation adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(52,362)
Current-period other comprehensive (loss) gain	(24,149)
Amounts reclassified from AOCI related to derivative instruments	0
Balance at end of period	$ (76,511)
[1]	Unrealized (loss) gain represents derivative instruments, net of taxes of $19,210 and $(14,290) for the thirteen week periods ended March 30, 2019 and March 31, 2018 , respectively and $41,480 and $(24,725) for the twenty-six week period s ended March 30, 2019 and March 31, 2018
[2]	Defined benefit pension plan and other postretirement plan activity represents pension liability adjustments, net of taxes of $(51) for the thirteen and twenty-six week periods ended March 30, 2019

ACCUMULATED OTHER COMPREHENSI_5

ACCUMULATED OTHER COMPREHENSIVE LOSS - Schedule of Amounts Recognized in Other Comprehensive Loss (Details) - USD ($) $ in Thousands		3 Months Ended				6 Months Ended
		Mar. 30, 2019	Dec. 29, 2018	Mar. 31, 2018	Dec. 30, 2017	Mar. 30, 2019	Mar. 31, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Deferred tax benefit on reclassifications out of accumulated other comprehensive (loss) income		$ (64,552)		$ (45,347)		$ (118,274)	$ 75,700
Losses reclassified into earnings, net of tax		$ 202,632	$ 196,042	$ 196,278	$ 314,775	398,674	511,053
Unrealized (loss) gain on derivatives designated and qualifying as cash flow hedges (1) | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization from redesignated interest rate swap and cap agreements (1)	[1]					1,461	2,213
Losses from settlement of foreign currency forward contracts	[2]					1,005	0
Deferred tax benefit on reclassifications out of accumulated other comprehensive (loss) income						(579)	(566)
Losses reclassified into earnings, net of tax						$ 1,887	$ 1,647
[1]	This component of accumulated other comprehensive (loss) income is included in interest expense (see Note 12, “Derivatives and Hedging Activities,” for additional information).
[2]	This component of accumulated other comprehensive (loss) income is included in net sales (see Note 12, “Derivatives and Hedging Activities,” for additional information).

SUPPLEMENTAL GUARANTOR INFORM_3

SUPPLEMENTAL GUARANTOR INFORMATION - Supplemental Condensed Consolidating Balance Sheet (Details) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 29, 2018	Oct. 01, 2018	Sep. 30, 2018	Mar. 31, 2018	Dec. 30, 2017	Sep. 30, 2017
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	$ 2,441,336			$ 2,073,017
Restricted Cash	387,566			0
Trade accounts receivable - Net	1,141,249			704,310
Inventories - Net	1,453,044		$ 801,315	805,292
Prepaid expenses and other	172,334			74,668
Total current assets	5,595,529			3,657,287
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	0			0
PROPERTY, PLANT AND EQUIPMENT - NET	737,599			388,333
GOODWILL	8,614,316			6,223,290
OTHER INTANGIBLE ASSETS - NET	2,724,452			1,788,404
DEFERRED INCOME TAXES	38,972			0
OTHER	86,288			140,153
TOTAL ASSETS	17,797,156			12,197,467
Current portion of long-term debt	448,163			75,817
Short-term borrowings - trade receivable securitization facility	299,806			299,519
Accounts payable	318,586			173,603
Accrued liabilities	659,638			351,443
Total current liabilities	1,726,193			900,382
LONG-TERM DEBT	16,509,181			12,501,946
DEFERRED INCOME TAXES	658,175		$ 400,507	399,496
OTHER NON-CURRENT LIABILITIES	385,854			204,114
Total liabilities	19,279,403			14,005,938
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	(1,491,778)	$ (1,666,893)		(1,808,471)	$ (2,309,337)	$ (2,599,713)	$ (2,951,204)
NONCONTROLLING INTEREST	9,531			0
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	17,797,156			12,197,467
Eliminations
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	0			0
Restricted Cash	0			0
Trade accounts receivable - Net	(206)			0
Inventories - Net	(13,554)			(4,457)
Prepaid expenses and other	0			0
Total current assets	(13,760)			(4,457)
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	(33,112,683)			(20,839,485)
PROPERTY, PLANT AND EQUIPMENT - NET	0			0
GOODWILL	0			0
OTHER INTANGIBLE ASSETS - NET	0			0
DEFERRED INCOME TAXES	0			0
OTHER	0			0
TOTAL ASSETS	(33,126,443)			(20,843,942)
Current portion of long-term debt	0			0
Short-term borrowings - trade receivable securitization facility	0			0
Accounts payable	0			0
Accrued liabilities	0			0
Total current liabilities	0			0
LONG-TERM DEBT	0			0
DEFERRED INCOME TAXES	0			0
OTHER NON-CURRENT LIABILITIES	0			0
Total liabilities	0			0
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	(33,126,443)			(20,843,942)
NONCONTROLLING INTEREST	0			0
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	(33,126,443)			(20,843,942)
TransDigm Group
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	143			389
Restricted Cash	0			0
Trade accounts receivable - Net	0			0
Inventories - Net	0			0
Prepaid expenses and other	0			0
Total current assets	143			389
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	(1,491,921)			(1,808,860)
PROPERTY, PLANT AND EQUIPMENT - NET	0			0
GOODWILL	0			0
OTHER INTANGIBLE ASSETS - NET	0			0
DEFERRED INCOME TAXES	0			0
OTHER	0			0
TOTAL ASSETS	(1,491,778)			(1,808,471)
Current portion of long-term debt	0			0
Short-term borrowings - trade receivable securitization facility				0
Accounts payable	0			0
Accrued liabilities	0			0
Total current liabilities	0			0
LONG-TERM DEBT	0			0
DEFERRED INCOME TAXES	0			0
OTHER NON-CURRENT LIABILITIES	0			0
Total liabilities	0			0
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	(1,491,778)			(1,808,471)
NONCONTROLLING INTEREST	0			0
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	(1,491,778)			(1,808,471)
TransDigm Inc.
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	1,412,477			1,821,437
Restricted Cash	0			0
Trade accounts receivable - Net	0			0
Inventories - Net	48,057			45,262
Prepaid expenses and other	60,143			16,231
Total current assets	1,520,677			1,882,930
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	20,091,568			10,459,497
PROPERTY, PLANT AND EQUIPMENT - NET	47,827			15,562
GOODWILL	82,924			97,002
OTHER INTANGIBLE ASSETS - NET	25,908			31,362
DEFERRED INCOME TAXES	0			0
OTHER	34,347			104,633
TOTAL ASSETS	21,803,251			12,590,986
Current portion of long-term debt	75,847			75,817
Short-term borrowings - trade receivable securitization facility	0			0
Accounts payable	22,416			18,470
Accrued liabilities	219,766			118,600
Total current liabilities	318,029			212,887
LONG-TERM DEBT	15,918,829			12,011,166
DEFERRED INCOME TAXES	577,615			345,357
OTHER NON-CURRENT LIABILITIES	218,538			77,573
Total liabilities	17,033,011			12,646,983
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	4,770,240			(55,997)
NONCONTROLLING INTEREST	0			0
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	21,803,251			12,590,986
TransDigm UK [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	268			125
Restricted Cash	0			0
Trade accounts receivable - Net	0			0
Inventories - Net	0			0
Prepaid expenses and other	0			0
Total current assets	268			125
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	1,108,369			1,099,886
PROPERTY, PLANT AND EQUIPMENT - NET	0			0
GOODWILL	0			0
OTHER INTANGIBLE ASSETS - NET	0			0
DEFERRED INCOME TAXES	0			0
OTHER	0			0
TOTAL ASSETS	1,108,637			1,100,011
Current portion of long-term debt	0			0
Short-term borrowings - trade receivable securitization facility	0			0
Accounts payable	0			0
Accrued liabilities	12,891			13,274
Total current liabilities	12,891			13,274
LONG-TERM DEBT	491,118			490,780
DEFERRED INCOME TAXES	0			0
OTHER NON-CURRENT LIABILITIES	0			0
Total liabilities	504,009			504,054
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	604,628			595,957
NONCONTROLLING INTEREST	0			0
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	1,108,637			1,100,011
Subsidiary Guarantors
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	(9,432)			(1,763)
Restricted Cash	0			0
Trade accounts receivable - Net	226,948			40,916
Inventories - Net	935,060			648,574
Prepaid expenses and other	62,136			47,020
Total current assets	1,214,712			734,747
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	9,532,453			8,928,726
PROPERTY, PLANT AND EQUIPMENT - NET	464,012			319,567
GOODWILL	5,984,217			5,466,148
OTHER INTANGIBLE ASSETS - NET	1,692,863			1,514,983
DEFERRED INCOME TAXES	7			0
OTHER	28,757			29,805
TOTAL ASSETS	18,917,021			16,993,976
Current portion of long-term debt	1,712			0
Short-term borrowings - trade receivable securitization facility	0			0
Accounts payable	168,195			115,735
Accrued liabilities	205,790			162,618
Total current liabilities	375,697			278,353
LONG-TERM DEBT	58,242			0
DEFERRED INCOME TAXES	19			(2,329)
OTHER NON-CURRENT LIABILITIES	100,104			104,829
Total liabilities	534,062			380,853
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	18,380,603			16,613,123
NONCONTROLLING INTEREST	2,356			0
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	18,917,021			16,993,976
Non- Guarantor Subsidiaries
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	1,037,880			252,829
Restricted Cash	387,566			0
Trade accounts receivable - Net	914,507			663,394
Inventories - Net	483,481			115,913
Prepaid expenses and other	50,055			11,417
Total current assets	2,873,489			1,043,553
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	3,872,214			2,160,236
PROPERTY, PLANT AND EQUIPMENT - NET	225,760			53,204
GOODWILL	2,547,175			660,140
OTHER INTANGIBLE ASSETS - NET	1,005,681			242,059
DEFERRED INCOME TAXES	38,965			0
OTHER	23,184			5,715
TOTAL ASSETS	10,586,468			4,164,907
Current portion of long-term debt	370,604			0
Short-term borrowings - trade receivable securitization facility	299,806			299,519
Accounts payable	127,975			39,398
Accrued liabilities	221,191			56,951
Total current liabilities	1,019,576			395,868
LONG-TERM DEBT	40,992			0
DEFERRED INCOME TAXES	80,541			56,468
OTHER NON-CURRENT LIABILITIES	67,212			21,712
Total liabilities	1,208,321			474,048
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	9,370,972			3,690,859
NONCONTROLLING INTEREST	7,175			0
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	$ 10,586,468			$ 4,164,907

SUPPLEMENTAL GUARANTOR INFORM_4

SUPPLEMENTAL GUARANTOR INFORMATION - Supplemental Condensed Consolidating Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018
Condensed Income Statements, Captions [Line Items]
NET SALES	$ 1,195,938	$ 933,070	$ 2,189,240	$ 1,781,030
COST OF SALES	536,618	398,996	965,803	770,306
GROSS PROFIT	659,320	534,074	1,223,437	1,010,724
SELLING AND ADMINISTRATIVE EXPENSES	164,366	107,526	286,549	214,054
AMORTIZATION OF INTANGIBLE ASSETS	23,063	17,457	43,097	34,569
(LOSS) INCOME FROM OPERATIONS	471,891	409,091	893,791	762,101
INTEREST EXPENSE - NET	201,409	161,266	373,409	322,199
REFINANCING COSTS	3,298	638	3,434	1,751
EQUITY IN INCOME OF SUBSIDIARIES			0	0
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	267,184	247,187	516,948	438,151
INCOME TAX PROVISION	64,552	45,347	118,274	(75,700)
INCOME FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS	202,632	201,840	398,674	513,851
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(224)	0	(224)	0
NET INCOME FROM CONTINUING OPERATIONS ATTRIBUTABLE TO TD GROUP	202,408	201,840	398,450	513,851
Loss from discontinued operations	0	(5,562)	0	(2,798)
NET INCOME ATTRIBUTABLE TO TD GROUP	202,408	196,278	398,450	511,053
OTHER COMPREHENSIVE (LOSS) INCOME, NET OF TAX	(76,044)	68,262	(161,137)	91,662
TOTAL COMPREHENSIVE INCOME (LOSS)	126,364	$ 264,540	237,313	602,715
Eliminations
Condensed Income Statements, Captions [Line Items]
NET SALES			(60,322)	(39,412)
COST OF SALES			(60,322)	(39,412)
GROSS PROFIT			0	0
SELLING AND ADMINISTRATIVE EXPENSES			0	0
AMORTIZATION OF INTANGIBLE ASSETS			0	0
(LOSS) INCOME FROM OPERATIONS			0	0
INTEREST EXPENSE - NET			0	0
REFINANCING COSTS			0	0
EQUITY IN INCOME OF SUBSIDIARIES			1,124,667	1,073,597
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES			(1,124,667)	(1,073,597)
INCOME TAX PROVISION			0	0
INCOME FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS			(1,124,667)	(1,073,597)
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS			0	0
NET INCOME FROM CONTINUING OPERATIONS ATTRIBUTABLE TO TD GROUP			(1,124,667)	(1,073,597)
Loss from discontinued operations			0	0
NET INCOME ATTRIBUTABLE TO TD GROUP			(1,124,667)	(1,073,597)
OTHER COMPREHENSIVE (LOSS) INCOME, NET OF TAX			209,960	(129,559)
TOTAL COMPREHENSIVE INCOME (LOSS)			(914,707)	(1,203,156)
TransDigm Group
Condensed Income Statements, Captions [Line Items]
NET SALES			0	0
COST OF SALES			0	0
GROSS PROFIT			0	0
SELLING AND ADMINISTRATIVE EXPENSES			0	0
AMORTIZATION OF INTANGIBLE ASSETS			0	0
(LOSS) INCOME FROM OPERATIONS			0	0
INTEREST EXPENSE - NET			0	0
REFINANCING COSTS			0	0
EQUITY IN INCOME OF SUBSIDIARIES			(398,450)	(511,053)
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES			398,450	511,053
INCOME TAX PROVISION			0	0
INCOME FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS	$ 202,632		398,450	511,053
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS			0	0
NET INCOME FROM CONTINUING OPERATIONS ATTRIBUTABLE TO TD GROUP			398,450	511,053
Loss from discontinued operations			0	0
NET INCOME ATTRIBUTABLE TO TD GROUP			398,450	511,053
OTHER COMPREHENSIVE (LOSS) INCOME, NET OF TAX			(161,137)	91,662
TOTAL COMPREHENSIVE INCOME (LOSS)			237,313	602,715
TransDigm Inc.
Condensed Income Statements, Captions [Line Items]
NET SALES			87,851	77,215
COST OF SALES			65,713	43,858
GROSS PROFIT			22,138	33,357
SELLING AND ADMINISTRATIVE EXPENSES			100,789	48,893
AMORTIZATION OF INTANGIBLE ASSETS			2,043	714
(LOSS) INCOME FROM OPERATIONS			(80,694)	(16,250)
INTEREST EXPENSE - NET			377,799	318,138
REFINANCING COSTS			3,173	1,751
EQUITY IN INCOME OF SUBSIDIARIES			(726,217)	(562,544)
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES			264,551	226,405
INCOME TAX PROVISION			(133,899)	(284,648)
INCOME FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS			398,450	511,053
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS			0	0
NET INCOME FROM CONTINUING OPERATIONS ATTRIBUTABLE TO TD GROUP			398,450	511,053
Loss from discontinued operations			0	0
NET INCOME ATTRIBUTABLE TO TD GROUP			398,450	511,053
OTHER COMPREHENSIVE (LOSS) INCOME, NET OF TAX			(122,925)	64,166
TOTAL COMPREHENSIVE INCOME (LOSS)			275,525	575,219
TransDigm UK [Member]
Condensed Income Statements, Captions [Line Items]
NET SALES			0	0
COST OF SALES			0	0
GROSS PROFIT			0	0
SELLING AND ADMINISTRATIVE EXPENSES			0	0
AMORTIZATION OF INTANGIBLE ASSETS			0	0
(LOSS) INCOME FROM OPERATIONS			0	0
INTEREST EXPENSE - NET			9,070	0
REFINANCING COSTS			261	0
EQUITY IN INCOME OF SUBSIDIARIES			0	0
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES			(9,331)	0
INCOME TAX PROVISION			0	0
INCOME FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS			(9,331)	0
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS			0	0
NET INCOME FROM CONTINUING OPERATIONS ATTRIBUTABLE TO TD GROUP			(9,331)	0
Loss from discontinued operations			0	0
NET INCOME ATTRIBUTABLE TO TD GROUP			(9,331)	0
OTHER COMPREHENSIVE (LOSS) INCOME, NET OF TAX			0	0
TOTAL COMPREHENSIVE INCOME (LOSS)			(9,331)	0
Subsidiary Guarantors
Condensed Income Statements, Captions [Line Items]
NET SALES			1,763,478	1,441,477
COST OF SALES			730,086	577,494
GROSS PROFIT			1,033,392	863,983
SELLING AND ADMINISTRATIVE EXPENSES			148,575	103,779
AMORTIZATION OF INTANGIBLE ASSETS			35,462	29,709
(LOSS) INCOME FROM OPERATIONS			849,355	730,495
INTEREST EXPENSE - NET			(2,701)	(2)
REFINANCING COSTS			0	0
EQUITY IN INCOME OF SUBSIDIARIES			0	0
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES			852,056	730,497
INCOME TAX PROVISION			233,647	202,265
INCOME FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS			618,409	528,232
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS			0	0
NET INCOME FROM CONTINUING OPERATIONS ATTRIBUTABLE TO TD GROUP			618,409	528,232
Loss from discontinued operations			0	(17,869)
NET INCOME ATTRIBUTABLE TO TD GROUP			618,409	510,363
OTHER COMPREHENSIVE (LOSS) INCOME, NET OF TAX			11,599	9,719
TOTAL COMPREHENSIVE INCOME (LOSS)			630,008	520,082
Non- Guarantor Subsidiaries
Condensed Income Statements, Captions [Line Items]
NET SALES			398,233	301,750
COST OF SALES			230,326	188,366
GROSS PROFIT			167,907	113,384
SELLING AND ADMINISTRATIVE EXPENSES			37,185	61,382
AMORTIZATION OF INTANGIBLE ASSETS			5,592	4,146
(LOSS) INCOME FROM OPERATIONS			125,130	47,856
INTEREST EXPENSE - NET			(10,759)	4,063
REFINANCING COSTS			0	0
EQUITY IN INCOME OF SUBSIDIARIES			0	0
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES			135,889	43,793
INCOME TAX PROVISION			18,526	6,683
INCOME FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS			117,363	37,110
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS			(224)	0
NET INCOME FROM CONTINUING OPERATIONS ATTRIBUTABLE TO TD GROUP			117,139	37,110
Loss from discontinued operations			0	15,071
NET INCOME ATTRIBUTABLE TO TD GROUP			117,139	52,181
OTHER COMPREHENSIVE (LOSS) INCOME, NET OF TAX			(98,634)	55,674
TOTAL COMPREHENSIVE INCOME (LOSS)			$ 18,505	$ 107,855

SUPPLEMENTAL GUARANTOR INFORM_5

SUPPLEMENTAL GUARANTOR INFORMATION - Supplemental Condensed Consolidating Cash Flow Statement (Details) - USD ($)	6 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Condensed Cash Flow Statements, Captions [Line Items]
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	$ 452,997,000	$ 453,684,000
Capital expenditures	(43,404,000)	(30,884,000)
Payments made in connection with acquisitions, net of cash acquired	(3,569,378,000)	(50,320,000)
Proceeds in connection with the sale of discontinued operations	0	57,686,000
Net cash used in investing activities	(3,612,782,000)	(23,518,000)
Intercompany activities	0	0
Proceeds from exercise of stock options	47,126,000	26,305,000
Dividend equivalent payments	(24,309,000)	(56,148,000)
Proceeds from term loans, net	0	793,042,000
Repayments on term loans	(38,214,000)	(833,052,000)
Cash tender and redemption of 2020 Notes	(550,000,000)	0
Proceeds from senior subordinated notes due 2027, net	544,578,000	0
Proceeds from senior secured notes due 2026, net	3,937,398,000	0
Financing fees and other	(1,753,000)	(2,155,000)
Net cash (used in) provided by financing activities	3,914,826,000	(72,008,000)
EFFECT OF EXCHANGE RATE CHANGES ON CASH, CASH EQUIVALENTS AND RESTRICTED CASH	844,000	2,288,000
(DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	755,885,000	360,446,000
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	2,073,017,000	650,561,000
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD	2,828,902,000	1,011,007,000
Cash and Cash Equivalents, Period Increase (Decrease)		360,446,000
Eliminations
Condensed Cash Flow Statements, Captions [Line Items]
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	8,912,000	2,980,000
Capital expenditures	0	0
Payments made in connection with acquisitions, net of cash acquired	0	0
Proceeds in connection with the sale of discontinued operations		0
Net cash used in investing activities	0	0
Intercompany activities	(8,912,000)	(2,980,000)
Proceeds from exercise of stock options	0	0
Dividend equivalent payments	0	0
Proceeds from term loans, net		0
Repayments on term loans	0	0
Cash tender and redemption of 2020 Notes	0
Proceeds from senior subordinated notes due 2027, net	0
Proceeds from senior secured notes due 2026, net	0
Financing fees and other	0	0
Net cash (used in) provided by financing activities	(8,912,000)	(2,980,000)
EFFECT OF EXCHANGE RATE CHANGES ON CASH, CASH EQUIVALENTS AND RESTRICTED CASH	0	0
(DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	0
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	0	0
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD	0	0
Cash and Cash Equivalents, Period Increase (Decrease)		0
TransDigm Group
Condensed Cash Flow Statements, Captions [Line Items]
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	0	0
Capital expenditures	0	0
Payments made in connection with acquisitions, net of cash acquired	0	0
Proceeds in connection with the sale of discontinued operations		0
Net cash used in investing activities	0	0
Intercompany activities	(23,013,000)	42,048,000
Proceeds from exercise of stock options	47,126,000	26,305,000
Dividend equivalent payments	(24,309,000)	(56,148,000)
Proceeds from term loans, net		0
Repayments on term loans	0	0
Cash tender and redemption of 2020 Notes	0
Proceeds from senior subordinated notes due 2027, net	0
Proceeds from senior secured notes due 2026, net	0
Financing fees and other	0	0
Net cash (used in) provided by financing activities	(196,000)	12,205,000
EFFECT OF EXCHANGE RATE CHANGES ON CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(50,000)	0
(DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(246,000)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	389,000	2,416,000
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD	143,000	14,621,000
Cash and Cash Equivalents, Period Increase (Decrease)		12,205,000
TransDigm Inc.
Condensed Cash Flow Statements, Captions [Line Items]
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	(64,040,000)	(157,892,000)
Capital expenditures	(1,827,000)	(826,000)
Payments made in connection with acquisitions, net of cash acquired	(3,538,128,000)	(50,320,000)
Proceeds in connection with the sale of discontinued operations		57,686,000
Net cash used in investing activities	(3,539,955,000)	6,540,000
Intercompany activities	(701,197,000)	571,729,000
Proceeds from exercise of stock options	0	0
Dividend equivalent payments	0	0
Proceeds from term loans, net		793,042,000
Repayments on term loans	38,214,000	(833,052,000)
Cash tender and redemption of 2020 Notes	(550,000,000)
Proceeds from senior subordinated notes due 2027, net	544,578,000
Proceeds from senior secured notes due 2026, net	3,937,398,000
Financing fees and other	2,470,000	(2,155,000)
Net cash (used in) provided by financing activities	3,195,035,000	529,564,000
EFFECT OF EXCHANGE RATE CHANGES ON CASH, CASH EQUIVALENTS AND RESTRICTED CASH	0	0
(DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(408,960,000)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	1,821,437,000	439,473,000
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD	1,412,477,000	817,685,000
Cash and Cash Equivalents, Period Increase (Decrease)		378,212,000
TransDigm UK [Member]
Condensed Cash Flow Statements, Captions [Line Items]
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	4,424,000	0
Capital expenditures	0	0
Payments made in connection with acquisitions, net of cash acquired	0	0
Proceeds in connection with the sale of discontinued operations		0
Net cash used in investing activities	0	0
Intercompany activities	(4,281,000)	0
Proceeds from exercise of stock options	0	0
Dividend equivalent payments	0	0
Proceeds from term loans, net		0
Repayments on term loans	0	0
Cash tender and redemption of 2020 Notes	0
Proceeds from senior subordinated notes due 2027, net	0
Proceeds from senior secured notes due 2026, net	0
Financing fees and other	0	0
Net cash (used in) provided by financing activities	(4,281,000)	0
EFFECT OF EXCHANGE RATE CHANGES ON CASH, CASH EQUIVALENTS AND RESTRICTED CASH	0	0
(DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	143,000
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	125,000	0
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD	268,000	0
Cash and Cash Equivalents, Period Increase (Decrease)		0
Subsidiary Guarantors
Condensed Cash Flow Statements, Captions [Line Items]
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	468,801,000	578,789,000
Capital expenditures	(36,175,000)	(27,370,000)
Payments made in connection with acquisitions, net of cash acquired	(31,250,000)	0
Proceeds in connection with the sale of discontinued operations		0
Net cash used in investing activities	(67,425,000)	(27,370,000)
Intercompany activities	(407,292,000)	(547,932,000)
Proceeds from exercise of stock options	0	0
Dividend equivalent payments	0	0
Proceeds from term loans, net		0
Repayments on term loans	0	0
Cash tender and redemption of 2020 Notes	0
Proceeds from senior subordinated notes due 2027, net	0
Proceeds from senior secured notes due 2026, net	0
Financing fees and other	(1,753,000)	0
Net cash (used in) provided by financing activities	(409,045,000)	(547,932,000)
EFFECT OF EXCHANGE RATE CHANGES ON CASH, CASH EQUIVALENTS AND RESTRICTED CASH	0	0
(DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(7,669,000)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	(1,763,000)	(203,000)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD	(9,432,000)	3,284,000
Cash and Cash Equivalents, Period Increase (Decrease)		3,487,000
Non- Guarantor Subsidiaries
Condensed Cash Flow Statements, Captions [Line Items]
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	34,900,000	29,807,000
Capital expenditures	(5,402,000)	(2,688,000)
Payments made in connection with acquisitions, net of cash acquired	0	0
Proceeds in connection with the sale of discontinued operations		0
Net cash used in investing activities	(5,402,000)	(2,688,000)
Intercompany activities	1,144,695,000	(62,865,000)
Proceeds from exercise of stock options	0	0
Dividend equivalent payments	0	0
Proceeds from term loans, net		0
Repayments on term loans	0	0
Cash tender and redemption of 2020 Notes	0
Proceeds from senior subordinated notes due 2027, net	0
Proceeds from senior secured notes due 2026, net	0
Financing fees and other	(2,470,000)	0
Net cash (used in) provided by financing activities	1,142,225,000	(62,865,000)
EFFECT OF EXCHANGE RATE CHANGES ON CASH, CASH EQUIVALENTS AND RESTRICTED CASH	894,000	2,288,000
(DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	1,172,617,000
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	252,829,000	208,875,000
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD	$ 1,425,446,000	175,417,000
Cash and Cash Equivalents, Period Increase (Decrease)		$ (33,458,000)

SUPPLEMENTAL GUARANTOR INFORM_6

SUPPLEMENTAL GUARANTOR INFORMATION Narrative (Details)	Mar. 30, 2019
Condensed Financial Statements, Captions [Line Items]
Percentage of ownership in subsidiary	100.00%

SUBSEQUENT EVENTS (Details)

SUBSEQUENT EVENTS (Details) - USD ($) $ in Thousands	Apr. 15, 2019	Mar. 30, 2019	Sep. 30, 2018
Subsequent Event [Line Items]
Interest Payable, Current		$ 124,200	$ 96,600
3.625% Senior Notes Due 2023 [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Interest Payable, Current	$ 6,800
Early Redemption Premium	6,800
Fees and Commissions	200
Senior Notes, Current	373,800
Restricted Cash and Investments, Current	387,600
Euro Member Countries, Euro | 3.625% Senior Notes Due 2023 [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Senior Notes, Current	$ 330,000