TransDigm (TDG) 10-Q 7 Aug 19 2019 Q3 Quarterly report Financial data

Cover Page Cover Page

Cover Page Cover Page - shares	9 Months Ended
	Jun. 29, 2019	Jul. 29, 2019
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 29, 2019
Document Transition Report	false
Entity File Number	001-32833
Entity Registrant Name	TransDigm Group Incorporated
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	41-2101738
Entity Address, Address Line One	1301 East 9th Street,
Entity Address, Address Line Two	Suite 3000,
Entity Address, City or Town	Cleveland,
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	44114
City Area Code	216
Local Phone Number	706-2960
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	TDG
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		53,329,410
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001260221
Document Fiscal Year Focus	2019
Amendment Flag	false
Current Fiscal Year End Date	--09-30

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 29, 2019	Sep. 30, 2018
CURRENT ASSETS:
Cash and cash equivalents	$ 2,716,812	$ 2,073,017
Trade accounts receivable - Net	1,162,345	704,310
Inventories - Net	1,413,934	805,292
Prepaid expenses and other	118,104	74,668
Total current assets	5,411,195	3,657,287
PROPERTY, PLANT AND EQUIPMENT - NET	745,538	388,333
GOODWILL	8,684,663	6,223,290
OTHER INTANGIBLE ASSETS - NET	2,734,014	1,788,404
DEFERRED INCOME TAXES	62,775	0
OTHER	64,413	140,153
TOTAL ASSETS	17,702,598	12,197,467
CURRENT LIABILITIES:
Current portion of long-term debt	80,863	75,817
Short-term borrowings - trade receivable securitization facility	299,951	299,519
Accounts payable	310,448	173,603
Accrued liabilities	689,378	351,443
Total current liabilities	1,380,640	900,382
LONG-TERM DEBT	16,495,885	12,501,946
DEFERRED INCOME TAXES	641,002	399,496
OTHER NON-CURRENT LIABILITIES	495,685	204,114
Total liabilities	19,013,212	14,005,938
TD GROUP STOCKHOLDERS’ DEFICIT:
Common stock - $.01 par value; authorized 224,400,000 shares; issued 57,450,206 and 56,895,686 at June 29, 2019 and September 30, 2018, respectively	575	569
Additional paid-in capital	1,339,050	1,208,742
Accumulated deficit	(1,709,790)	(2,246,578)
Accumulated other comprehensive (loss) income	(175,775)	4,100
Treasury stock, at cost; 4,161,326 shares at June 29, 2019 and September 30, 2018, respectively	(775,304)	(775,304)
Total TD Group stockholders’ deficit	(1,321,244)	(1,808,471)
NONCONTROLLING INTERESTS	10,630	0
Total stockholders' deficit	(1,310,614)	(1,808,471)
TOTAL LIABILITIES AND STOCKHOLDERS’ DEFICIT	$ 17,702,598	$ 12,197,467

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets Parenthetical - $ / shares	Jun. 29, 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	57,450,206	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						9 Months Ended
	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 30, 2017	Jun. 29, 2019	Jun. 30, 2018
NET SALES	$ 1,658,319			$ 980,662			$ 3,847,559	$ 2,761,692
COST OF SALES	896,845			411,142			1,862,648	1,181,448
GROSS PROFIT	761,474			569,520			1,984,911	1,580,244
SELLING AND ADMINISTRATIVE EXPENSES	274,557			112,816			561,307	326,208
AMORTIZATION OF INTANGIBLE ASSETS	41,889			19,224			84,986	53,793
INCOME FROM OPERATIONS	445,028			437,480			1,338,618	1,200,243
INTEREST EXPENSE - NET	241,292			167,577			614,701	489,776
REFINANCING COSTS	106			4,159			3,540	5,910
OTHER (INCOME) EXPENSE	(1,889)			203			(2,090)	865
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	205,519			265,541			722,467	703,692
INCOME TAX PROVISION	60,909			48,150			179,183	(27,550)
INCOME FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS	144,610			217,391			543,284	731,242
LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX	0			(145)			0	(2,943)
NET INCOME INCLUDING NONCONTROLLING INTERESTS	144,610	$ 202,632	$ 196,042	217,246	$ 196,278	$ 314,775	543,284	728,299
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(160)			0			(384)	0
NET INCOME ATTRIBUTABLE TO TD GROUP	144,450			217,246			542,900	728,299
NET INCOME APPLICABLE TO TD GROUP COMMON STOCK	$ 144,450			$ 217,246			$ 518,591	$ 672,151
Net earnings per share attributable to TD Group stockholders:
Net earnings per share from continuing operations - basic and diluted	$ 2.57			$ 3.91			$ 9.22	$ 12.14
Net loss per share from discontinued operations - basic and diluted	0			0			0	(0.05)
Net earnings per share	$ 2.57			$ 3.91			$ 9.22	$ 12.09
Weighted-average shares outstanding:
Basic and diluted (in shares)	56,265			55,597			56,265	55,598

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 30, 2017	Jun. 29, 2019	Jun. 30, 2018
Net income including noncontrolling interests	$ 144,610	$ 202,632	$ 196,042	$ 217,246	$ 196,278	$ 314,775	$ 543,284	$ 728,299
Net income attributable to noncontrolling interests	(160)			0			(384)	0
NET INCOME ATTRIBUTABLE TO TD GROUP	144,450			217,246			542,900	728,299
Other comprehensive (loss) income, net of tax:
Foreign currency translation	51,752	(12,921)	(11,228)	(32,543)	23,036	5,152	27,603	(4,355)
Unrealized (loss) gain on derivatives	(70,144)	(63,254)	$ (73,865)	2,307	$ 45,226	$ 18,248	(207,263)	65,781
Pensions and other postretirement benefits	(346)	$ 131		0			(215)	0
Other comprehensive (loss) income, net of tax, attributable to TD Group	(18,738)			(30,236)			(179,875)	61,426
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO TD GROUP	$ 125,712			$ 187,010			$ 363,025	$ 789,725

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		189,082				0
Exercise of employee stock options	7,292	$ 2	7,290			$ 0
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	728,299
NET INCOME INCLUDING NONCONTROLLING INTERESTS	728,299
Foreign currency translation adjustments, net of tax	(4,355)
Unrealized (loss) gain on derivatives, net of tax	65,781
Pensions and other postretirement benefit adjustments, net of tax	0
BALANCE (in shares) at Jun. 30, 2018		56,717,525
BALANCE (in shares) at Jun. 30, 2018						(4,161,326)
BALANCE at Jun. 30, 2018	(2,098,480)	$ 567	1,171,549	(2,471,575)	(23,717)	$ (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		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
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
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]
Accrued unvested dividend equivalents and other	(3,989)			(3,989)
Compensation expense recognized for employee stock options	13,518		13,518
Exercise of employee stock options		203,536
Exercise of employee stock options	14,318	$ 2	14,316
Net income	217,246			217,246
NET INCOME INCLUDING NONCONTROLLING INTERESTS	217,246
Foreign currency translation adjustments, net of tax	(32,543)				(32,543)
Unrealized (loss) gain on derivatives, net of tax	2,307				2,307
Pensions and other postretirement benefit adjustments, net of tax	0
BALANCE (in shares) at Jun. 30, 2018		56,717,525
BALANCE (in shares) at Jun. 30, 2018						(4,161,326)
BALANCE at Jun. 30, 2018	(2,098,480)	$ 567	1,171,549	(2,471,575)	(23,717)	$ (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		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		$ 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				3,300
Net income	542,900
NET INCOME INCLUDING NONCONTROLLING INTERESTS	543,284
Foreign currency translation adjustments, net of tax	27,603
Unrealized (loss) gain on derivatives, net of tax	(207,263)
Pensions and other postretirement benefit adjustments, net of tax	$ (215)
BALANCE (in shares) at Jun. 29, 2019	57,450,206	57,450,206
BALANCE (in shares) at Jun. 29, 2019	(4,161,326)					(4,161,326)
BALANCE at Jun. 29, 2019	$ (1,321,244)	$ 575	1,339,050	(1,709,790)	(175,775)	$ (775,304)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
NONCONTROLLING INTEREST							0
Total stockholders' deficit	(1,666,893)
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		$ 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		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
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
BALANCE (in shares) at Mar. 30, 2019						(4,161,326)
BALANCE at Mar. 30, 2019		$ 573	1,291,103	(1,851,113)	(157,037)	$ (775,304)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
NONCONTROLLING INTEREST							9,531
Total stockholders' deficit	(1,482,247)
Acquisition of business	939						939
Accrued unvested dividend equivalents and other	(3,127)			(3,127)
Compensation expense recognized for employee stock options	30,794		30,794
Exercise of employee stock options		146,109
Exercise of employee stock options	17,155	$ 2	17,153
Net income	144,450			144,450
NET INCOME INCLUDING NONCONTROLLING INTERESTS	144,610
Net Income (Loss) from Noncontrolling Interest							160
Foreign currency translation adjustments, net of tax	51,752				51,752
Unrealized (loss) gain on derivatives, net of tax	(70,144)				(70,144)
Pensions and other postretirement benefit adjustments, net of tax	$ (346)				(346)
BALANCE (in shares) at Jun. 29, 2019	57,450,206	57,450,206
BALANCE (in shares) at Jun. 29, 2019	(4,161,326)					(4,161,326)
BALANCE at Jun. 29, 2019	$ (1,321,244)	$ 575	$ 1,339,050	$ (1,709,790)	$ (175,775)	$ (775,304)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
NONCONTROLLING INTEREST	10,630						$ 10,630
Total stockholders' deficit	$ (1,310,614)

Condensed Consolidated Statem_4

Condensed Consolidated Statement of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Jun. 29, 2019	Jun. 30, 2018
OPERATING ACTIVITIES:
Net income from continuing operations including noncontrolling interests	$ 543,284	$ 728,299
Net loss from discontinued operations	0	2,943
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	61,752	41,248
Amortization of intangible assets	85,792	54,286
Amortization of debt issuance costs, original issue discount and premium	20,198	16,179
Amortization of inventory step-up	109,348	3,165
Refinancing costs	3,540	5,910
Non-cash equity compensation	70,082	36,411
Deferred income taxes	5,150	(166,783)
Changes in assets/liabilities, net of effects from acquisitions of businesses:
Trade accounts receivable	(65,346)	(861)
Inventories	(100,042)	(25,157)
Income taxes receivable/payable	(9,400)	6,730
Other assets	(24,475)	(2,500)
Accounts payable	(7,436)	724
Accrued interest	95,012	6,670
Accrued and other liabilities	(19,103)	(16,354)
Net cash provided by operating activities	768,356	690,910
INVESTING ACTIVITIES:
Capital expenditures	(80,421)	(50,097)
Payments made in connection with acquisitions, net of cash acquired	(3,956,944)	(582,262)
Proceeds in connection with the sale of discontinued operations	0	57,686
Net cash used in investing activities	(4,037,365)	(574,673)
FINANCING ACTIVITIES:
Proceeds from exercise of stock options	64,279	40,621
Dividend equivalent payments	(24,309)	(56,148)
Proceeds from term loans, net	0	12,779,772
Repayments on term loans	(57,321)	(12,155,198)
Cash tender and redemption of senior subordinated notes due 2020	550,000	0
Proceeds from senior subordinated notes due 2027, net	544,462	0
Proceeds from senior secured notes due 2026, net	3,935,715	0
Proceeds from senior subordinated notes due 2026, net	0	490,411
Financing fees and other	(1,186)	(9,904)
Net cash provided by financing activities	3,911,640	1,089,554
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	1,164	(2,979)
NET INCREASE IN CASH AND CASH EQUIVALENTS	643,795	1,202,812
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	2,073,017	650,561
CASH AND CASH EQUIVALENTS, END OF PERIOD	2,716,812	1,853,373
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid during the period for interest	533,187	469,667
Cash paid during the period for income taxes	$ 183,480	$ 123,597

DESCRIPTION OF THE BUSINESS

DESCRIPTION OF THE BUSINESS	9 Months Ended
	Jun. 29, 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, advanced sensor products, switches and relay panels, advanced displays, thermal protection and insulation, 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	9 Months Ended
	Jun. 29, 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 thirty-nine week period ended June 29, 2019 are not necessarily indicative of the results to be expected for the full year. Certain reclassifications have been made to the prior year condensed consolidated financial statements to conform to current year classifications related to the adoption of ASU 2017-07, "Compensation—Retirement Benefits (ASC 715), impacting the presentation of the net periodic benefit cost in the income statement. The accounting pronouncement and impact of the fiscal year 2019 adoption of the pronouncement on the condensed consolidated financial statements is summarized in Note 4, "Recent Accounting Pronouncements." The Esterline businesses were acquired during the second quarter of fiscal 2019 and preliminarily assessed as a separate segment of the Company. During the third quarter of fiscal 2019, TransDigm evaluated the strategic fit and description of each Esterline reporting unit to determine the appropriate business segment and based on the assessment, the Esterline businesses were integrated into TransDigm's existing Power & Control, Airframe and Non-aviation segments. Previously reported operating results for the Esterline segment were reclassified to conform to the presentation for the thirteen and thirty-nine weeks ended June 29, 2019. The re-segmentation did not impact prior period results. See Note 13, "Segments," for additional information.

ACQUISITIONS AND DIVESTITURES

ACQUISITIONS AND DIVESTITURES	9 Months Ended
	Jun. 29, 2019
Business Combinations [Abstract]
ACQUISITIONS	ACQUISITIONS AND DIVESTITURES During the thirty-nine week period ended June 29, 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 June 29, 2019 , the one year measurement period is open for Esterline, NavCom, and Skandia; 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. 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. Pro forma net sales and results of operations for the acquisitions other than Esterline, had they occurred at the beginning of the applicable thirty-nine week periods ended June 29, 2019 or June 30, 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 for the redemption of the outstanding senior notes due 2023 (herein the "2023 Notes"). The 2023 Notes were redeemed on April 15, 2019. 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. TransDigm evaluated the strategic fit and description of each Esterline reporting unit to determine the appropriate business segment for the reporting unit. Each Esterline reporting unit is included in one of TransDigm's segments: Power and Control, Airframe, or Non-aviation. Refer to Note 13, "Segments," for additional information about 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. 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. The preliminary allocation of the fair value of the Esterline acquisition is summarized in the table below (presented in thousands). Assets acquired: Current assets, excluding cash acquired $ 1,417,467 Property, plant, and equipment 338,843 Other intangible assets 992,000 Goodwill 2,503,798 Other 71,130 Total assets acquired 5,323,238 Liabilities assumed: Current liabilities 918,649 Other noncurrent liabilities 480,739 Total liabilities assumed 1,399,388 Net assets acquired $ 3,923,850 The Company currently expects that the approximately $2.5 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 loss from continuing operations for the thirteen and thirty-nine week periods ended June 29, 2019 include net sales of $545.3 million and $670.3 million , respectively and loss from continuing operations before tax of $18.1 million and $12.8 million , respectively related to the Esterline acquisition. Net income from continuing operations for the thirteen and thirty-nine week periods ended June 29, 2019 includes approximately $21.2 million and $24.8 million of other intangible asset amortization expense and $88.9 million and $103.9 million of inventory step-up amortization expense in cost of sales. Acquisition costs were expensed as incurred and for the thirteen and thirty-nine week periods ended June 29, 2019 totaled approximately $46.2 million and $71.7 million , respectively. These costs were recorded in selling and administrative expenses and cost of sales within the condensed consolidated statements of income. In connection with the financing of the Esterline acquisition, approximately $64.7 million of net interest expense (comprised of gross interest expense of $64.7 million and no interest income) has been recorded for the thirteen week period ended June 29, 2019 and approximately $89.2 million of net interest expense (comprised of gross interest expense of $97.4 million and interest income of $8.2 million ) has been recorded for the thirty-nine week period ended June 29, 2019 . The following pro forma information presents consolidated financial information as if Esterline had been acquired at the beginning of fiscal year 2018. Interest expense has been adjusted as though the debt incurred to finance the Esterline acquisition had been outstanding at October 1, 2017 . In the pro forma information presented, each quarter of fiscal 2018 and the first two quarters of fiscal 2019 include other intangible asset amortization expense of approximately $21.2 million resulting from the preliminary acquisition accounting. The third quarter of fiscal 2019 presented includes other intangible asset amortization of approximately $8.3 million resulting from the preliminary acquisition accounting. The full $118.7 million of inventory step-up amortization resulting from the preliminary acquisition 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 $88.9 million and $103.9 million recorded for the thirteen and thirty-nine week periods ended June 29, 2019 , respectively 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 Thirty-Nine Week Periods Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 Net sales $ 1,658,319 $ 1,477,729 $ 4,723,660 $ 4,253,811 Income from continuing operations attributable to TD Group $ 252,159 $ 197,030 $ 611,750 $ 377,215 Net earnings per share attributable to TD Group stockholders from continuing operations - basic and diluted $ 4.48 $ 3.54 $ 10.44 $ 5.77 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. No goodwill recognized for the acquisition is 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 $533.1 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 the fair values at the date of acquisition. To the extent the purchase price exceeded the 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 fair values of the assets acquired and liabilities assumed at the transaction date (presented in thousands). Assets acquired: Current assets, excluding cash acquired $ 53,325 Property, plant, and equipment 4,103 Other intangible assets 105,000 Goodwill 407,046 Total assets acquired 569,474 Liabilities assumed: Current liabilities 9,876 Other noncurrent liabilities 26,453 Total liabilities assumed 36,329 Net assets acquired $ 533,145 Approximately $62.5 million of the $105.0 million other intangible assets recognized for the acquisition is deductible for tax purposes over 15 years. Of the $407.0 million of goodwill recognized for the acquisition, approximately $12.4 million 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 June 29, 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 thirty-nine week period ended June 29, 2019 . Loss from discontinued operations was $0.1 million and $2.9 million in the condensed consolidated statements of income for the thirteen and thirty-nine week periods ended June 30, 2018 , respectively, which is summarized as follows (amounts in thousands): Thirteen Week Period Ended Thirty-Nine Week Period Ended June 30, 2018 June 30, 2018 Net sales $ — $ 11,808 Income from discontinued operations before income taxes — 354 Income tax benefit — 2,016 Income from discontinued operations, net of tax — 2,370 Net loss on sale of discontinued operations, net of tax (145 ) (5,313 ) Loss from discontinued operations $ (145 ) $ (2,943 )

RECENT ACCOUNTING PRONOUNCEMENT

RECENT ACCOUNTING PRONOUNCEMENTS	9 Months Ended
	Jun. 29, 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. The Company is currently evaluating the impact of adopting this standard on our consolidated financial statements and disclosures. We are adopting 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 the Company for annual and interim periods beginning after October 1, 2020 and early adoption is permitted. 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 the Company for fiscal years beginning after October 1, 2020, 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 the Company for fiscal years beginning after October 1, 2019, 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 August 2018, the FASB issued ASU 2018-14, "Compensation - Retirement Benefits - Defined Benefit Plans - General (ASC 715-20)." ASU 2018-14 modifies disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. The ASU also requires an entity to disclose the weighted-average interest crediting rates for cash balance plans and to explain the reasons for significant gains and losses related to changes in the benefit obligation. The ASU is effective for the Company on October 1, 2020 and early adoption is permitted. The Company is currently evaluating the impact of adopting this standard on our consolidated financial statements and disclosures.

REVENUE

REVENUE	9 Months Ended
	Jun. 29, 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 thirty-nine week period s ended June 29, 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 are 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): June 29, 2019 October 1, 2018 Change Contract assets, current (1) $ 43,717 $ 18,328 $ 25,389 Contract assets, non-current (2) 9,596 118 9,478 Total contract assets 53,313 18,446 34,867 Contract liabilities, current (3) 7,765 2,742 5,023 Contract liabilities, non-current (4) 7,341 — 7,341 Total contract liabilities 15,106 2,742 12,364 Net contract assets $ 38,207 $ 15,704 $ 22,503 (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 thirty-nine week period ended June 29, 2019 were not materially impacted by any factors other than the Esterline acquisition. For the thirteen and thirty-nine week period s ended June 29, 2019 , the revenue recognized that was previously included in the beginning balance of contract liabilities was immaterial. Refer to Note 13, “Segments,” for disclosures related to the disaggregation of revenue.

EARNINGS PER SHARE (TWO-CLASS M

EARNINGS PER SHARE (TWO-CLASS METHOD)	9 Months Ended
	Jun. 29, 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 Thirty-Nine Week Periods Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 Numerator for earnings per share: Income from continuing operations including noncontrolling interests $ 144,610 $ 217,391 $ 543,284 $ 731,242 Net income attributable to noncontrolling interests (160 ) — (384 ) — Net income from continuing operations attributable to TD Group 144,450 217,391 542,900 731,242 Less dividends paid on participating securities — — (24,309 ) (56,148 ) 144,450 217,391 518,591 675,094 Loss from discontinued operations, net of tax — (145 ) — (2,943 ) Net income applicable to TD Group common stock - basic and diluted $ 144,450 $ 217,246 $ 518,591 $ 672,151 Denominator for basic and diluted earnings per share under the two-class method: Weighted-average common shares outstanding 53,208 52,470 52,994 52,241 Vested options deemed participating securities 3,057 3,127 3,271 3,357 Total shares for basic and diluted earnings per share 56,265 55,597 56,265 55,598 Net earnings per share from continuing operations - basic and diluted $ 2.57 $ 3.91 $ 9.22 $ 12.14 Net loss per share from discontinued operations - basic and diluted — — — (0.05 ) Net earnings per share $ 2.57 $ 3.91 $ 9.22 $ 12.09

INVENTORIES

INVENTORIES	9 Months Ended
	Jun. 29, 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): June 29, 2019 September 30, 2018 Raw materials and purchased component parts $ 839,458 $ 540,290 Work-in-progress 457,894 237,335 Finished goods 233,103 127,018 Total 1,530,455 904,643 Reserves for excess and obsolete inventory (116,521 ) (99,351 ) Inventories - Net $ 1,413,934 $ 805,292

INTANGIBLE ASSETS

INTANGIBLE ASSETS	9 Months Ended
	Jun. 29, 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): June 29, 2019 September 30, 2018 Gross Carrying Amount Accumulated Amortization Net Gross Carrying Amount Accumulated Amortization Net Trademarks and trade names $ 1,037,316 $ — $ 1,037,316 $ 799,749 $ — $ 799,749 Technology 1,867,800 474,621 1,393,179 1,347,314 416,579 930,735 Order backlog 89,628 24,352 65,276 12,200 5,409 6,791 Customer relationships 251,718 21,453 230,265 62,561 14,277 48,284 Other 16,848 8,870 7,978 10,873 8,028 2,845 Total $ 3,263,310 $ 529,296 $ 2,734,014 $ 2,232,697 $ 444,293 $ 1,788,404 As disclosed in Note 3, "Acquisitions and Divestitures," the estimated fair value of the net identifiable tangible and intangible assets acquired from Esterline 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. Intangible assets acquired during the thirty-nine week period ended June 29, 2019 are summarized in the table below (in thousands) Gross Amount Amortization Period Intangible assets not subject to amortization: Goodwill $ 2,446,686 Trademarks and trade names 251,700 2,698,386 Intangible assets subject to amortization: Technology 509,500 20 years Order backlog 78,000 1.5 years Customer relationships 156,035 20 years 743,535 18 years Total $ 3,441,921 The aggregate amortization expense on identifiable intangible assets for the thirty-nine week period s ended June 29, 2019 and June 30, 2018 was approximately $85.0 million and $53.8 million , respectively. The estimated amortization expense is $126.5 million for fiscal year 2019 , $164.4 million for fiscal year 2020 , and $112.3 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 June 29, 2019

DEBT

DEBT	9 Months Ended
	Jun. 29, 2019
Debt Disclosure [Abstract]
DEBT	DEBT The Company’s debt consists of the following (in thousands): June 29, 2019 Gross Amount Debt Issuance Costs Original Issue Discount or Premium Net Amount Short-term borrowings—trade receivable securitization facility $ 300,000 $ (49 ) $ — $ 299,951 Term loans $ 7,542,612 $ (60,847 ) $ (18,168 ) $ 7,463,597 6.00% senior subordinated notes due 2022 (2022 Notes) 1,150,000 (4,421 ) — 1,145,579 6.50% senior subordinated notes due 2024 (2024 Notes) 1,200,000 (5,984 ) — 1,194,016 6.50% senior subordinated notes due 2025 (2025 Notes) 750,000 (3,109 ) 3,226 750,117 6.375% senior subordinated notes due 2026 (6.375% 2026 Notes) 950,000 (7,042 ) — 942,958 6.875% senior subordinated notes due 2026 (6.875% 2026 Notes) 500,000 (5,723 ) (3,254 ) 491,023 6.25% secured notes due 2026 (2026 Secured Notes) 4,000,000 (61,799 ) 1,883 3,940,084 7.50% senior subordinated notes due 2027 (2027 Notes) 550,000 (5,259 ) — 544,741 Government refundable advances 39,641 — — 39,641 Capital lease obligations 64,992 — — 64,992 16,747,245 (154,184 ) (16,313 ) 16,576,748 Less current portion 81,634 (771 ) — 80,863 Long-term debt $ 16,665,611 $ (153,413 ) $ (16,313 ) $ 16,495,885 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 $191.7 million and $96.6 million as of June 29, 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 $65.5 million and expensed $0.8 million of debt issuance costs associated with the issuance of the 2026 Senior Secured Notes during the thirty-nine week period ended June 29, 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 $5.5 million of debt issuance costs associated with the 2027 Notes during the thirty-nine week period ended June 29, 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 thirty-nine week period ended June 29, 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 June 29, 2019 , the Company had $34.0 million in letters of credit outstanding, and $726.0 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). These obligations were assumed in connection with the Esterline acquisition and the balance was $39.6 million at June 29, 2019 . Obligations under Capital Leases - The Company leases certain buildings and equipment under capital leases. These obligations were 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 $65.0 million at June 29, 2019

INCOME TAXES

INCOME TAXES	9 Months Ended
	Jun. 29, 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 June 29, 2019 and June 30, 2018 , the effective income tax rate was 29.6% and 18.1% , respectively. During the thirty-nine week periods ended June 29, 2019 and June 30, 2018 , the effective income tax rate was 24.8% and (3.9)% , respectively. The Company's higher effective tax rate for the thirteen week period ended June 29, 2019 was primarily due to the detriment associated with our 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") along with taxes recognized as a result of the Company’s entity restructuring during the thirteen week period ended June 29, 2019 . The Company's higher effective tax rate for the thirty-nine week period ended June 29, 2019 was primarily due to the discrete benefit recognized in the thirty-nine week period ended June 30, 2018 related to the remeasurement of deferred tax balances resulting from certain provisions of the Act that did not recur in fiscal 2019, in addition to the detriment associated with the net interest expense limitation under IRC Section 163(j) along with taxes recognized as a result of the Company’s entity restructuring in anticipation of the Souriau-Sunbank Companies transaction described further in Note 17, "Subsequent Events," during the thirty-nine week period ended June 29, 2019 . The Company’s effective tax rate for the thirteen and thirty-nine week periods ended June 29, 2019 was higher than the Federal statutory rate of 21% primarily resulting from the net interest expense limitation under IRC Section 163(j), our foreign earnings taxed at rates higher than the U.S. statutory rate, the taxes associated with the entity restructuring (described above), 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 thirty-nine week periods ended June 30, 2018 was less than the Federal statutory tax rate primarily due to provisions of the Act described above, along with excess tax benefits for share-based payments and the domestic manufacturing deduction. 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 Company is subject to state income tax examinations for fiscal years 2011 and later. At June 29, 2019 and September 30, 2018 , TD Group had $18.6 million and $14.1 million , respectively, in unrecognized tax benefits, the recognition of which would have an effect of approximately $16.8 million and $13.1 million on the effective tax rate at June 29, 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 over the next 12 months. The Company recognizes accrued interest and penalties related to unrecognized tax benefits in income tax expense.

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	9 Months Ended
	Jun. 29, 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): June 29, 2019 September 30, 2018 Level Carrying Amount Fair Value Carrying Amount Fair Value Assets: Cash and cash equivalents 1 $ 2,716,812 $ 2,716,812 $ 2,073,017 $ 2,073,017 Interest rate cap agreements (1) 2 3,007 3,007 36,160 36,160 Interest rate swap agreements (2) 2 687 687 11,634 11,634 Interest rate swap agreements (1) 2 — — 61,126 61,126 Foreign currency forward exchange contracts and other (2) 2 548 548 — — Foreign currency forward exchange contracts and other (1) 2 242 242 — — Liabilities: Interest rate swap agreements (3) 2 8,914 8,914 528 528 Interest rate swap agreements (4) 2 165,065 165,065 142 142 Foreign currency forward exchange contracts and other (3) 2 7,497 7,497 — — Foreign currency forward exchange contracts and other (4) 2 337 337 — — Short-term borrowings - trade receivable securitization facility (5) 1 299,951 299,951 299,519 299,519 Long-term debt, including current portion: Term loans (5) 2 7,463,597 7,358,955 7,509,205 7,607,323 5.50% 2020 Notes (5) 1 — — 547,813 548,625 6.00% 2022 Notes (5) 1 1,145,579 1,161,500 1,144,499 1,155,750 6.50% 2024 Notes (5) 1 1,194,016 1,209,000 1,193,134 1,215,000 6.50% 2025 Notes (5) 1 750,117 753,750 750,131 757,500 6.375% 2026 Notes (5) 1 942,958 954,750 942,202 942,875 6.875% 2026 Notes (5) 1 491,023 502,500 490,779 507,500 6.25% 2026 Notes (5) 1 3,940,084 4,190,000 — — 7.50% 2027 Notes (5) 1 544,741 572,000 — — Government Refundable Advances 2 39,641 39,641 — — Capital Lease Obligations 2 64,992 64,992 — — (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 and cap 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 June 29, 2019 and September 30, 2018 .

DERIVATIVES AND HEDGING ACTIVIT

DERIVATIVES AND HEDGING ACTIVITIES	9 Months Ended
	Jun. 29, 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 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. June 29, 2019 September 30, 2018 Asset Liability Asset Liability Interest rate cap agreements $ 3,007 $ — $ 36,160 $ — Interest rate swap agreements (1) — (173,292 ) 72,090 — Total 3,007 (173,292 ) 108,250 — Effect of counterparty netting 687 (687 ) 670 (670 ) Net derivatives as classified in the balance sheet (2) $ 3,694 $ (173,979 ) $ 108,920 $ (670 ) (1) The increase in the interest rate swap liability is primarily attributable to a downward trend in the LIBO rate during fiscal 2019. (2) 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 June 29, 2019 , the estimated net amount of existing gains and losses and caplet amortization expected to be reclassified into interest expense within the next twelve months is approximately $13.4 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 $3.6 million and $3.0 million for the thirty-nine week period s ended June 29, 2019 and June 30, 2018 , respectively. The accumulated other comprehensive loss to be reclassified into interest expense over the remaining term of the cap agreements is $7.4 million with a related tax benefit of $1.7 million as of June 29, 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 $0.8 million and $0.5 million for the thirty-nine week period s ended June 29, 2019 and June 30, 2018 . The accumulated other comprehensive income to be reclassified into interest income over the remaining term of the swaps agreements is $1.4 million with a related tax expense of $0.3 million as of June 29, 2019 . Effective March 31, 2018, the Company redesignated the existing interest rate swap agreements related to the $1,000 million aggregate notional amount with a swap rate of 4.9% , which expired in June 2019, and the $400 million aggregate notional amount with a swap rate of 4.4% , 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 $2.1 million for the thirty-nine week period ended June 29, 2019 . The accumulated other comprehensive income to be reclassified into interest income over the remaining term of the swaps agreements is $9.3 million with a related tax expense of $2.2 million as of June 29, 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 June 29, 2019 , the Company had outstanding foreign currency forward exchange contracts principally to sell U.S. dollars with notional amounts of $327.5 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 thirty-nine week period ended June 29, 2019 , the losses the Company recognized on foreign currency forward exchange contracts designated as fair value hedges in the condensed consolidated statement of income is immaterial. During the thirty-nine week period ended June 29, 2019 , the Company reclassified losses on foreign currency forward exchange contracts designated as cash flow hedges of $0.4 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 thirty-nine week period ended June 29, 2019 , the Company recorded a gain of $0.2 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 an immaterial impact to the Company’s earnings related to the ineffective portion of any hedging instruments during the thirty-nine week period ended June 29, 2019 . In addition, there was an immaterial 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 thirty-nine week period ended June 29, 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 $6.2 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 June 29, 2019 was 24 months.

SEGMENTS

SEGMENTS	9 Months Ended
	Jun. 29, 2019
Segment Reporting [Abstract]
SEGMENTS	SEGMENTS The Company’s businesses are organized and managed in three reporting segments: Power & Control, Airframe and Non-aviation. 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, advanced sensor products, switches and relay panels, 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, advanced displays, thermal protection, 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 interconnect solutions for harsh environments serving customers primarily in aerospace, defense and space end markets, interface solutions serving leading OEMs in the medical, commercial, industrial, diagnostics and gaming end markets, 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 businesses were acquired during the second quarter of fiscal 2019 and preliminarily assessed as a separate segment of the Company. During the third quarter of fiscal 2019, the Esterline businesses were integrated into TransDigm's existing Power & Control, Airframe and Non-aviation segments. Previously reported operating results for the Esterline segment were reclassified to conform to the presentation for the thirteen and thirty-nine weeks ended June 29, 2019. The re-segmentation did not impact prior period results. 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 incentive 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 immaterial for the periods presented below. Certain corporate-level expenses are allocated to the operating segments.

RETIREMENT BENEFITS (Notes)

RETIREMENT BENEFITS (Notes)	9 Months Ended
	Jun. 29, 2019
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension and Other Postretirement Benefits Disclosure [Text Block]	RETIREMENT BENEFITS The components of total pension cost were as follows (in thousands): Thirteen Week Periods Ended Thirty-Nine Week Periods Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 U.S. Pension Plans Non-U.S. Pension Plans U.S. Pension Plans Non-U.S. Pension Plans U.S. Pension Plans Non-U.S. Pension Plans U.S. Pension Plans Non-U.S. Pension Plans Service cost $ 1,974 $ 1,516 $ 73 $ 54 $ 2,921 $ 2,054 $ 218 $ 162 Interest cost 3,251 1,467 189 46 4,914 2,014 519 136 Expected return on plan assets (4,574 ) (1,705 ) (131 ) — (6,654 ) (2,356 ) (390 ) 2 Amortization of actuarial loss 93 4 79 6 272 11 205 17 Amortization of transition obligation 90 — 50 — 258 — 149 — Total pension cost $ 834 $ 1,282 $ 260 $ 106 $ 1,711 $ 1,723 $ 701 $ 317 The defined benefit plan components of total pension cost, other than service cost, are included in other income (expense) in the Company's condensed consolidated statements of income. Pension costs related to the Esterline acquisition are based on the acquisition method of accounting and an in-process third-party valuation appraisal. The valuation is preliminary and may change in future periods as the valuation is refined and finalized during the allowable one year measurement period.

ACCUMULATED OTHER COMPREHENSIVE

ACCUMULATED OTHER COMPREHENSIVE LOSS	9 Months Ended
	Jun. 29, 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 thirty-nine week period ended June 29, 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 (210,585 ) (215 ) 27,603 (183,197 ) Amounts reclassified from AOCI related to derivative instruments 3,322 — — 3,322 Balance at June 29, 2019 $ (140,072 ) $ (10,944 ) $ (24,759 ) $ (175,775 ) (1) Unrealized (loss) gain represents derivative instruments, net of taxes of $22,281 and $(954) for the thirteen week periods ended June 29, 2019 and June 30, 2018 , respectively and $63,761 and $(25,679) for the thirty-nine week period s ended June 29, 2019 and June 30, 2018 , respectively. (2) Defined benefit pension plan and other postretirement plan activity represents pension liability adjustments, net of taxes of $130 and $79 for the thirteen and thirty-nine week period s ended June 29, 2019 , respectively. A summary of reclassifications out of accumulated other comprehensive (loss) income for the thirty-nine week period s ended June 29, 2019 and June 30, 2018 is provided below (in thousands): Amount reclassified Thirty-Nine Week Periods Ended Description of reclassifications out of accumulated other comprehensive (loss) income June 29, 2019 June 30, 2018 Amortization from redesignated interest rate swap and cap agreements (1) $ 2,277 $ 2,816 Losses from settlement of foreign currency forward exchange contracts (2) 413 — Deferred tax expense (benefit) on reclassifications out of accumulated other comprehensive (loss) income 632 (777 ) Losses reclassified into earnings, net of tax $ 3,322 $ 2,039 (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 INFORMAT

SUPPLEMENTAL GUARANTOR INFORMATION	9 Months Ended
	Jun. 29, 2019
Condensed Financial Information 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 June 29, 2019 and September 30, 2018 and its statements of income and comprehensive income and cash flows for the thirty-nine week period s ended June 29, 2019 and June 30, 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 JUNE 29, 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 $ 6,036 $ 2,295,239 $ 280 $ (12,394 ) $ 427,651 $ — $ 2,716,812 Trade accounts receivable - Net — — — 214,145 948,200 — 1,162,345 Inventories - Net — 52,727 — 922,218 453,696 (14,707 ) 1,413,934 Prepaid expenses and other — 29,572 — 44,549 43,983 — 118,104 Total current assets 6,036 2,377,538 280 1,168,518 1,873,530 (14,707 ) 5,411,195 INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES (1,327,280 ) 20,451,875 974,678 11,087,173 5,835,834 (37,022,280 ) — PROPERTY, PLANT AND EQUIPMENT - NET — 18,615 — 482,399 244,524 — 745,538 GOODWILL — 82,924 — 6,453,835 2,147,904 — 8,684,663 OTHER INTANGIBLE ASSETS - NET — 25,670 — 1,900,577 807,767 — 2,734,014 DEFERRED INCOME TAXES — 18,270 — 7 44,498 — 62,775 OTHER — 9,619 — 34,290 20,504 — 64,413 TOTAL ASSETS $ (1,321,244 ) $ 22,984,511 $ 974,958 $ 21,126,799 $ 10,974,561 $ (37,036,987 ) $ 17,702,598 LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY CURRENT LIABILITIES: Current portion of long-term debt $ — $ 75,656 $ — $ 1,745 $ 3,462 $ — $ 80,863 Short-term borrowings - trade receivable securitization facility — — — — 299,951 — 299,951 Accounts payable — 16,556 — 166,610 127,282 — 310,448 Accrued liabilities — 252,767 4,297 213,292 219,022 — 689,378 Total current liabilities — 344,979 4,297 381,647 649,717 — 1,380,640 LONG-TERM DEBT — 15,905,437 491,023 57,770 41,655 — 16,495,885 DEFERRED INCOME TAXES — 560,530 — 19 80,453 — 641,002 OTHER NON-CURRENT LIABILITIES — 265,776 — 152,382 77,527 — 495,685 Total liabilities — 17,076,722 495,320 591,818 849,352 — 19,013,212 TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY (1,321,244 ) 5,907,789 479,638 20,534,981 10,114,579 (37,036,987 ) (1,321,244 ) NONCONTROLLING INTEREST — — — — 10,630 — 10,630 TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY $ (1,321,244 ) $ 22,984,511 $ 974,958 $ 21,126,799 $ 10,974,561 $ (37,036,987 ) $ 17,702,598 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 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 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 THIRTY-NINE WEEK PERIOD ENDED JUNE 29, 2019 (Amounts in thousands) TransDigm Group TransDigm Inc. TransDigm UK Subsidiary Guarantors Non- Guarantor Subsidiaries Eliminations Total Consolidated NET SALES $ — $ 136,514 $ — $ 2,981,434 $ 872,715 $ (143,104 ) $ 3,847,559 COST OF SALES — 144,252 — 1,285,205 576,295 (143,104 ) 1,862,648 GROSS PROFIT — (7,738 ) — 1,696,229 296,420 — 1,984,911 SELLING AND ADMINISTRATIVE EXPENSES — 198,924 14 257,146 105,223 — 561,307 AMORTIZATION OF INTANGIBLE ASSETS — (7,047 ) — 66,588 25,445 — 84,986 (LOSS) INCOME FROM OPERATIONS — (199,615 ) (14 ) 1,372,495 165,752 — 1,338,618 INTEREST EXPENSE (INCOME) - NET — 604,886 26,501 (6,605 ) (10,081 ) — 614,701 REFINANCING COSTS — 3,272 268 — — — 3,540 OTHER (INCOME) EXPENSE — (69,698 ) 89,539 (593,642 ) 571,711 — (2,090 ) EQUITY IN INCOME OF SUBSIDIARIES (542,900 ) (1,280,975 ) — — — 1,823,875 — INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES 542,900 542,900 (116,322 ) 1,972,742 (395,878 ) (1,823,875 ) 722,467 INCOME TAX PROVISION — — — 112,108 67,075 — 179,183 INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS 542,900 542,900 (116,322 ) 1,860,634 (462,953 ) (1,823,875 ) 543,284 LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX — — — — — — — NET INCOME (LOSS) INCLUDING NONCONTROLLING INTERESTS 542,900 542,900 (116,322 ) 1,860,634 (462,953 ) (1,823,875 ) 543,284 NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS — — — — (384 ) — (384 ) NET INCOME (LOSS) ATTRIBUTABLE TO TD GROUP $ 542,900 $ 542,900 $ (116,322 ) $ 1,860,634 $ (463,337 ) $ (1,823,875 ) $ 542,900 OTHER COMPREHENSIVE (LOSS) INCOME, NET OF TAX (179,875 ) 57,853 — 12,290 (9,011 ) (61,132 ) (179,875 ) TOTAL COMPREHENSIVE INCOME (LOSS) $ 363,025 $ 600,753 $ (116,322 ) $ 1,872,924 $ (472,348 ) $ (1,885,007 ) $ 363,025 TRANSDIGM GROUP INCORPORATED CONDENSED CONSOLIDATING STATEMENT OF INCOME AND COMPREHENSIVE INCOME FOR THE THIRTY-NINE WEEK PERIOD ENDED JUNE 30, 2018 (Amounts in thousands) TransDigm Group TransDigm Inc. TransDigm UK Subsidiary Guarantors Non- Guarantor Subsidiaries Eliminations Total Consolidated NET SALES $ — $ 118,783 $ — $ 2,243,838 $ 459,571 $ (60,500 ) $ 2,761,692 COST OF SALES — 68,022 — 895,381 278,545 (60,500 ) 1,181,448 GROSS PROFIT — 50,761 — 1,348,457 181,026 — 1,580,244 SELLING AND ADMINISTRATIVE EXPENSES — 74,949 — 200,298 50,961 — 326,208 AMORTIZATION OF INTANGIBLE ASSETS — 1,038 — 46,533 6,222 — 53,793 (LOSS) INCOME FROM OPERATIONS — (25,226 ) — 1,101,626 123,843 — 1,200,243 INTEREST EXPENSE (INCOME) - NET — 478,341 2,569 (4 ) 8,870 — 489,776 REFINANCING COSTS — 5,839 71 — — — 5,910 OTHER (INCOME) EXPENSE — (241 ) — (1,646 ) 2,752 — 865 EQUITY IN INCOME OF SUBSIDIARIES (728,299 ) (913,523 ) — — — 1,641,822 — INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES 728,299 404,358 (2,640 ) 1,103,276 112,221 (1,641,822 ) 703,692 INCOME TAX PROVISION — (323,941 ) — 283,975 12,416 — (27,550 ) INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS 728,299 728,299 (2,640 ) 819,301 99,805 (1,641,822 ) 731,242 LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX — — — (2,310 ) (633 ) — (2,943 ) NET INCOME (LOSS) INCLUDING NONCONTROLLING INTERESTS 728,299 728,299 (2,640 ) 816,991 99,172 (1,641,822 ) 728,299 NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS — — — — — — — NET INCOME (LOSS) ATTRIBUTABLE TO TD GROUP $ 728,299 $ 728,299 $ (2,640 ) $ 816,991 $ 99,172 $ (1,641,822 ) $ 728,299 OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX 61,426 66,480 — 8,553 (15,123 ) (59,910 ) 61,426 TOTAL COMPREHENSIVE INCOME (LOSS) $ 789,725 $ 794,779 $ (2,640 ) $ 825,544 $ 84,049 $ (1,701,732 ) $ 789,725 TRANSDIGM GROUP INCORPORATED CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS FOR THE THIRTY-NINE WEEK PERIOD ENDED JUNE 29, 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 $ — $ (420,927 ) $ (110,835 ) $ 1,951,008 $ (660,749 ) $ 9,859 $ 768,356 INVESTING ACTIVITIES: Capital expenditures — (2,760 ) — (69,992 ) (7,669 ) — (80,421 ) Payments made in connection with acquisitions, net of cash acquired — (3,923,850 ) — (33,094 ) — — (3,956,944 ) Net cash used in investing activities — (3,926,610 ) — (103,086 ) (7,669 ) — (4,037,365 ) FINANCING ACTIVITIES: Intercompany activities (34,323 ) 946,145 112,012 (1,858,553 ) 844,578 (9,859 ) — Proceeds from exercise of stock options 64,279 — — — — — 64,279 Dividend equivalent payments (24,309 ) — — — — — (24,309 ) Repayment on term loans — (57,321 ) — — — — (57,321 ) Cash tender and redemption of 2020 Notes — (550,000 ) — — — — (550,000 ) Proceeds from 2027 Notes, net — 544,462 — — — — 544,462 Proceeds from 2026 Secured Notes, net — 3,935,715 — — — — 3,935,715 Financing fees and other — 2,338 (1,022 ) — (2,502 ) — (1,186 ) Net cash provided by (used in) financing activities 5,647 4,821,339 110,990 (1,858,553 ) 842,076 (9,859 ) 3,911,640 EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS — — — — 1,164 — 1,164 INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS 5,647 473,802 155 (10,631 ) 174,822 — 643,795 CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD 389 1,821,437 125 (1,763 ) 252,829 — 2,073,017 CASH AND CASH EQUIVALENTS, END OF PERIOD $ 6,036 $ 2,295,239 $ 280 $ (12,394 ) $ 427,651 $ — $ 2,716,812 TRANSDIGM GROUP INCORPORATED CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS FOR THE THIRTY-NINE WEEK PERIOD ENDED JUNE 30, 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 $ — $ (291,416 ) $ 2,110 $ 863,173 $ 117,043 $ — $ 690,910 INVESTING ACTIVITIES: Capital expenditures — (1,372 ) — (41,999 ) (6,726 ) — (50,097 ) Payments made in connection with acquisitions, net of cash acquired — (582,262 ) — — — — (582,262 ) Proceeds in connection with sale of discontinued operations — 57,686 — — — — 57,686 Net cash used in investing activities — (525,948 ) — (41,999 ) (6,726 ) — (574,673 ) FINANCING ACTIVITIES: Intercompany activities 14,035 1,392,169 (492,371 ) (820,946 ) (92,887 ) — — Proceeds from exercise of stock options 40,621 — — — — — 40,621 Dividend equivalent payments (56,148 ) — — — — — (56,148 ) Proceeds from term loans, net — 12,779,772 — — — — 12,779,772 Repayment on term loans — (12,155,198 ) — — — — (12,155,198 ) Proceeds from 6.875% 2026 Notes, net — — 490,411 — — — 490,411 Financing fees and other — (9,904 ) — — — — (9,904 ) Net cash (used in) provided by financing activities (1,492 ) 2,006,839 (1,960 ) (820,946 ) (92,887 ) — 1,089,554 EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS — — — — (2,979 ) — (2,979 ) (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS (1,492 ) 1,189,475 150 228 14,451 — 1,202,812 CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD 2,416 439,473 — (203 ) 208,875 — 650,561 CASH AND CASH EQUIVALENTS, END OF PERIOD $ 924 $ 1,628,948 $ 150 $ 25 $ 223,326 $ — $ 1,853,373

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	9 Months Ended
	Jun. 29, 2019
Subsequent Event [Line Items]
Subsequent Events [Text Block]	SUBSEQUENT EVENTS On July 21, 2019, TransDigm and certain of its subsidiaries entered into a binding offer (the “Put Agreement”) with Eaton Corporation plc (“Eaton”) for the acquisition by Eaton of the shares of Souriau SAS, Souriau USA Inc. and Sunbank Family of Companies LLC (collectively, the “Souriau-Sunbank Companies”). Pursuant to the terms of the Put Agreement, after completion of the consultation process with the French works council, TransDigm will have the right to require Eaton to enter into a securities purchase agreement (the “Purchase Agreement”) providing for the purchase by Eaton from the TransDigm of the shares of the Souriau-Sunbank Companies. Pursuant to the terms of the Purchase Agreement, Eaton will purchase the shares of the Souriau-Sunbank Companies for approximately $920 million . The Souriau-Sunbank Companies were acquired by TransDigm as part of its acquisition of Esterline in March 2019 and are included within TransDigm's Non-aviation segment. In addition to the consultation with the French works council, the transaction is subject to execution and delivery of the Purchase Agreement and other definitive agreements, the satisfaction or waiver of customary closing conditions and receipt of required regulatory approvals. The transaction is expected to be completed during the first quarter of fiscal 2020. On July 30, 2019, the Company amended its $350 million trade receivable securitization facility to extend the maturity date to July 28, 2020. As of June 29, 2019, the Company has borrowed $300 million under the trade receivable securitization facility and has an unused borrowing capacity of $50 million . The trade receivable securitization facility is collateralized by substantially all of the Company’s domestic operations’ trade accounts receivable. On August 6, 2019, the Company announced that TD Group's Board of Directors authorized and declared a special cash dividend of $30.00 on each outstanding share of common stock and cash dividend equivalent payments on options granted under its stock incentive plans. The record date for the special dividend is August 16, 2019, and the payment date for the dividend is August 23, 2019. The total cash payment related to the special dividend and dividend equivalent payments in the fourth quarter of fiscal 2019 will be approximately $1.7 billion . On August 6, 2019, TransDigm entered into a definitive agreement with an affiliate of KPS Capital Partners, LP pursuant to which TransDigm agreed to sell the Esterline Interface Technology group of businesses (the “EIT Companies”) for approximately $190 million . The EIT Companies were acquired by TransDigm as part of its acquisition of Esterline in March 2019 and are included within TransDigm's Non-aviation segment. Subject to regulatory approvals and customary closing conditions, the sale is expected to be completed during the first quarter of fiscal 2020.

RECENT ACCOUNTING PRONOUNCEME_2

RECENT ACCOUNTING PRONOUNCEMENTS (Policies)	9 Months Ended
	Jun. 29, 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. The Company is currently evaluating the impact of adopting this standard on our consolidated financial statements and disclosures. We are adopting 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 the Company for annual and interim periods beginning after October 1, 2020 and early adoption is permitted. 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 the Company for fiscal years beginning after October 1, 2020, 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 the Company for fiscal years beginning after October 1, 2019, 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 August 2018, the FASB issued ASU 2018-14, "Compensation - Retirement Benefits - Defined Benefit Plans - General (ASC 715-20)." ASU 2018-14 modifies disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. The ASU also requires an entity to disclose the weighted-average interest crediting rates for cash balance plans and to explain the reasons for significant gains and losses related to changes in the benefit obligation. The ASU is effective for the Company on October 1, 2020 and early adoption is permitted. The Company is currently evaluating the impact of adopting this standard on our consolidated financial statements and disclosures.

REVENUE Narrative (Policies)

REVENUE Narrative (Policies)	9 Months Ended
	Jun. 29, 2019
Revenue Recognition [Abstract]
Revenue [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 are 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.

ACQUISITIONS AND DIVESTITURES (

ACQUISITIONS AND DIVESTITURES (Tables)	9 Months Ended
	Jun. 29, 2019	Jun. 30, 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 thirty-nine</font><font style="font-family:inherit;font-size:10pt;"> week periods ended </font><font style="font-family:inherit;font-size:10pt;">June 29, 2019</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">June 30, 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;">June 29, 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;">June 30, 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;">June 29, 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;">June 30, 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;">—</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;">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;">—</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;">—</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;">—</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;">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;">—</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;">—</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;">(145</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;">(5,313</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;">(145</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;">(2,943</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 $0.1 million and $2.9 million in the condensed consolidated statements of income for the thirteen and thirty-nine week periods ended June 30, 2018 , respectively, which is summarized as follows (amounts in thousands): Thirteen Week Period Ended Thirty-Nine Week Period Ended June 30, 2018 June 30, 2018 Net sales $ — $ 11,808 Income from discontinued operations before income taxes — 354 Income tax benefit — 2,016 Income from discontinued operations, net of tax — 2,370 Net loss on sale of discontinued operations, net of tax (145 ) (5,313 ) Loss from discontinued operations $ (145 ) $ (2,943 )
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 Thirty-Nine Week Periods Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 Net sales $ 1,658,319 $ 1,477,729 $ 4,723,660 $ 4,253,811 Income from continuing operations attributable to TD Group $ 252,159 $ 197,030 $ 611,750 $ 377,215 Net earnings per share attributable to TD Group stockholders from continuing operations - basic and diluted $ 4.48 $ 3.54 $ 10.44 $ 5.77
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	Assets acquired: Current assets, excluding cash acquired $ 1,417,467 Property, plant, and equipment 338,843 Other intangible assets 992,000 Goodwill 2,503,798 Other 71,130 Total assets acquired 5,323,238 Liabilities assumed: Current liabilities 918,649 Other noncurrent liabilities 480,739 Total liabilities assumed 1,399,388 Net assets acquired $ 3,923,850
Extant [Member]
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	summarizes the purchase price allocation of the fair values of the assets acquired and liabilities assumed at the transaction date (presented in thousands). Assets acquired: Current assets, excluding cash acquired $ 53,325 Property, plant, and equipment 4,103 Other intangible assets 105,000 Goodwill 407,046 Total assets acquired 569,474 Liabilities assumed: Current liabilities 9,876 Other noncurrent liabilities 26,453 Total liabilities assumed 36,329 Net assets acquired $ 533,145 Approximately $62.5 million of the $105.0 million

ACQUISITIONS AND DIVESTITURES D

ACQUISITIONS AND DIVESTITURES Discontinued Operations (Tables)	9 Months Ended
	Jun. 29, 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;">$0.1 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 thirty-nine</font><font style="font-family:inherit;font-size:10pt;"> week periods ended </font><font style="font-family:inherit;font-size:10pt;">June 30, 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 thirty-nine</font><font style="font-family:inherit;font-size:10pt;"> week periods ended </font><font style="font-family:inherit;font-size:10pt;">June 29, 2019</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">June 30, 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;">June 29, 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;">June 30, 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;">June 29, 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;">June 30, 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;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</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;">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;">—</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;">—</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;">—</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;">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;">—</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;">—</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;">(145</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;">(5,313</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;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(145</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</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;">(2,943</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)	9 Months Ended
	Jun. 29, 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)	9 Months Ended
	Jun. 29, 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): June 29, 2019 October 1, 2018 Change Contract assets, current (1) $ 43,717 $ 18,328 $ 25,389 Contract assets, non-current (2) 9,596 118 9,478 Total contract assets 53,313 18,446 34,867 Contract liabilities, current (3) 7,765 2,742 5,023 Contract liabilities, non-current (4) 7,341 — 7,341 Total contract liabilities 15,106 2,742 12,364 Net contract assets $ 38,207 $ 15,704 $ 22,503 (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.

EARNINGS PER SHARE (TWO-CLASS_2

EARNINGS PER SHARE (TWO-CLASS METHOD) (Tables)	9 Months Ended
	Jun. 29, 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 Thirty-Nine Week Periods Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 Numerator for earnings per share: Income from continuing operations including noncontrolling interests $ 144,610 $ 217,391 $ 543,284 $ 731,242 Net income attributable to noncontrolling interests (160 ) — (384 ) — Net income from continuing operations attributable to TD Group 144,450 217,391 542,900 731,242 Less dividends paid on participating securities — — (24,309 ) (56,148 ) 144,450 217,391 518,591 675,094 Loss from discontinued operations, net of tax — (145 ) — (2,943 ) Net income applicable to TD Group common stock - basic and diluted $ 144,450 $ 217,246 $ 518,591 $ 672,151 Denominator for basic and diluted earnings per share under the two-class method: Weighted-average common shares outstanding 53,208 52,470 52,994 52,241 Vested options deemed participating securities 3,057 3,127 3,271 3,357 Total shares for basic and diluted earnings per share 56,265 55,597 56,265 55,598 Net earnings per share from continuing operations - basic and diluted $ 2.57 $ 3.91 $ 9.22 $ 12.14 Net loss per share from discontinued operations - basic and diluted — — — (0.05 ) Net earnings per share $ 2.57 $ 3.91 $ 9.22 $ 12.09

INVENTORIES (Tables)

INVENTORIES (Tables)	9 Months Ended
	Jun. 29, 2019
Inventory Disclosure [Abstract]
Inventories	Inventories consist of the following (in thousands): June 29, 2019 September 30, 2018 Raw materials and purchased component parts $ 839,458 $ 540,290 Work-in-progress 457,894 237,335 Finished goods 233,103 127,018 Total 1,530,455 904,643 Reserves for excess and obsolete inventory (116,521 ) (99,351 ) Inventories - Net $ 1,413,934 $ 805,292

INTANGIBLE ASSETS (Tables)

INTANGIBLE ASSETS (Tables)	9 Months Ended
	Jun. 29, 2019
Acquired Finite-Lived Intangible Assets [Line Items]
Schedule of Acquired Intangible Assets by Major Class [Table Text Block]	As disclosed in Note 3, "Acquisitions and Divestitures," the estimated fair value of the net identifiable tangible and intangible assets acquired from Esterline 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. Intangible assets acquired during the thirty-nine week period ended June 29, 2019
Intangible Assets Subject to Amortization	Other intangible assets - net in the condensed consolidated balance sheets consist of the following (in thousands): June 29, 2019 September 30, 2018 Gross Carrying Amount Accumulated Amortization Net Gross Carrying Amount Accumulated Amortization Net Trademarks and trade names $ 1,037,316 $ — $ 1,037,316 $ 799,749 $ — $ 799,749 Technology 1,867,800 474,621 1,393,179 1,347,314 416,579 930,735 Order backlog 89,628 24,352 65,276 12,200 5,409 6,791 Customer relationships 251,718 21,453 230,265 62,561 14,277 48,284 Other 16,848 8,870 7,978 10,873 8,028 2,845 Total $ 3,263,310 $ 529,296 $ 2,734,014 $ 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 June 29, 2019 (in thousands): Power & Control Airframe Non- aviation Total Balance - September 30, 2018 $ 3,677,683 $ 2,452,332 $ 93,275 $ 6,223,290 Goodwill acquired during the year 668,355 1,224,542 553,789 2,446,686 Purchase price allocation adjustments 13,111 13,979 (4,969 ) 22,121 Currency translation adjustment 268 (5,824 ) (1,878 ) (7,434 ) Balance - June 29, 2019 $ 4,359,417 $ 3,685,029 $ 640,217 $ 8,684,663

DEBT (Tables)

DEBT (Tables)	9 Months Ended
	Jun. 29, 2019
Debt Disclosure [Abstract]
Schedule of Debt	The Company’s debt consists of the following (in thousands): June 29, 2019 Gross Amount Debt Issuance Costs Original Issue Discount or Premium Net Amount Short-term borrowings—trade receivable securitization facility $ 300,000 $ (49 ) $ — $ 299,951 Term loans $ 7,542,612 $ (60,847 ) $ (18,168 ) $ 7,463,597 6.00% senior subordinated notes due 2022 (2022 Notes) 1,150,000 (4,421 ) — 1,145,579 6.50% senior subordinated notes due 2024 (2024 Notes) 1,200,000 (5,984 ) — 1,194,016 6.50% senior subordinated notes due 2025 (2025 Notes) 750,000 (3,109 ) 3,226 750,117 6.375% senior subordinated notes due 2026 (6.375% 2026 Notes) 950,000 (7,042 ) — 942,958 6.875% senior subordinated notes due 2026 (6.875% 2026 Notes) 500,000 (5,723 ) (3,254 ) 491,023 6.25% secured notes due 2026 (2026 Secured Notes) 4,000,000 (61,799 ) 1,883 3,940,084 7.50% senior subordinated notes due 2027 (2027 Notes) 550,000 (5,259 ) — 544,741 Government refundable advances 39,641 — — 39,641 Capital lease obligations 64,992 — — 64,992 16,747,245 (154,184 ) (16,313 ) 16,576,748 Less current portion 81,634 (771 ) — 80,863 Long-term debt $ 16,665,611 $ (153,413 ) $ (16,313 ) $ 16,495,885 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)	9 Months Ended
	Jun. 29, 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): June 29, 2019 September 30, 2018 Level Carrying Amount Fair Value Carrying Amount Fair Value Assets: Cash and cash equivalents 1 $ 2,716,812 $ 2,716,812 $ 2,073,017 $ 2,073,017 Interest rate cap agreements (1) 2 3,007 3,007 36,160 36,160 Interest rate swap agreements (2) 2 687 687 11,634 11,634 Interest rate swap agreements (1) 2 — — 61,126 61,126 Foreign currency forward exchange contracts and other (2) 2 548 548 — — Foreign currency forward exchange contracts and other (1) 2 242 242 — — Liabilities: Interest rate swap agreements (3) 2 8,914 8,914 528 528 Interest rate swap agreements (4) 2 165,065 165,065 142 142 Foreign currency forward exchange contracts and other (3) 2 7,497 7,497 — — Foreign currency forward exchange contracts and other (4) 2 337 337 — — Short-term borrowings - trade receivable securitization facility (5) 1 299,951 299,951 299,519 299,519 Long-term debt, including current portion: Term loans (5) 2 7,463,597 7,358,955 7,509,205 7,607,323 5.50% 2020 Notes (5) 1 — — 547,813 548,625 6.00% 2022 Notes (5) 1 1,145,579 1,161,500 1,144,499 1,155,750 6.50% 2024 Notes (5) 1 1,194,016 1,209,000 1,193,134 1,215,000 6.50% 2025 Notes (5) 1 750,117 753,750 750,131 757,500 6.375% 2026 Notes (5) 1 942,958 954,750 942,202 942,875 6.875% 2026 Notes (5) 1 491,023 502,500 490,779 507,500 6.25% 2026 Notes (5) 1 3,940,084 4,190,000 — — 7.50% 2027 Notes (5) 1 544,741 572,000 — — Government Refundable Advances 2 39,641 39,641 — — Capital Lease Obligations 2 64,992 64,992 — — (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_2

DERIVATIVES AND HEDGING ACTIVITIES (Tables)	9 Months Ended
	Jun. 29, 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 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	June 29, 2019 September 30, 2018 Asset Liability Asset Liability Interest rate cap agreements $ 3,007 $ — $ 36,160 $ — Interest rate swap agreements (1) — (173,292 ) 72,090 — Total 3,007 (173,292 ) 108,250 — Effect of counterparty netting 687 (687 ) 670 (670 ) Net derivatives as classified in the balance sheet (2) $ 3,694 $ (173,979 ) $ 108,920 $ (670 ) (1) The increase in the interest rate swap liability is primarily attributable to a downward trend in the LIBO rate during fiscal 2019. (2)

SEGMENTS (Tables)

SEGMENTS (Tables)	9 Months Ended
	Jun. 29, 2019
Segment Reporting [Abstract]
Net Sales by Reportable Segments	The following table presents net sales by reportable segment (in thousands): Thirteen Week Periods Ended Thirty-Nine Week Periods Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 Net sales to external customers Power & Control Commercial OEM $ 142,539 $ 130,935 $ 404,207 $ 367,818 Commercial Aftermarket 185,727 180,895 524,631 500,098 Defense 293,631 235,075 854,096 690,167 Esterline (1) 146,651 — 177,106 — Total Power & Control 768,548 546,905 1,960,040 1,558,083 Airframe Commercial OEM 153,218 137,030 437,567 368,172 Commercial Aftermarket 197,750 179,337 567,208 511,156 Defense 103,264 82,229 284,765 222,443 Esterline (1) 257,304 — 319,820 — Total Airframe 711,536 398,596 1,609,360 1,101,771 Total Non-aviation 178,235 35,161 278,159 101,838 $ 1,658,319 $ 980,662 $ 3,847,559 $ 2,761,692
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 Thirty-Nine Week Periods Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 EBITDA As Defined Power & Control $ 377,469 $ 288,202 $ 1,005,955 $ 808,539 Airframe 306,027 196,746 740,146 541,171 Non-aviation 45,172 11,075 73,207 30,392 Total segment EBITDA As Defined 728,668 496,023 1,819,308 1,380,102 Unallocated corporate expenses 37,671 8,882 69,865 28,305 Total Company EBITDA As Defined 690,997 487,141 1,749,443 1,351,797 Depreciation and amortization expense 71,318 33,925 147,544 95,534 Interest expense - net 241,292 167,577 614,701 489,776 Acquisition-related costs 136,385 10,381 186,451 16,940 Stock compensation expense 31,809 13,708 70,082 36,411 Refinancing costs 106 4,159 3,540 5,910 Other, net 4,568 (8,150 ) 4,658 3,534 Income from continuing operations before income taxes $ 205,519 $ 265,541 $ 722,467 $ 703,692
Total Assets by Segment	The following table presents total assets by segment (in thousands): June 29, 2019 September 30, 2018 Total assets Power & Control $ 7,587,184 $ 5,698,524 Airframe 7,371,933 4,091,011 Non-aviation 1,284,616 234,770 Corporate 1,458,865 2,173,162 $ 17,702,598 $ 12,197,467

RETIREMENT BENEFITS (Tables)

RETIREMENT BENEFITS (Tables)	9 Months Ended
	Jun. 29, 2019
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Schedule of Net Benefit Costs [Table Text Block]	The components of total pension cost were as follows (in thousands): Thirteen Week Periods Ended Thirty-Nine Week Periods Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 U.S. Pension Plans Non-U.S. Pension Plans U.S. Pension Plans Non-U.S. Pension Plans U.S. Pension Plans Non-U.S. Pension Plans U.S. Pension Plans Non-U.S. Pension Plans Service cost $ 1,974 $ 1,516 $ 73 $ 54 $ 2,921 $ 2,054 $ 218 $ 162 Interest cost 3,251 1,467 189 46 4,914 2,014 519 136 Expected return on plan assets (4,574 ) (1,705 ) (131 ) — (6,654 ) (2,356 ) (390 ) 2 Amortization of actuarial loss 93 4 79 6 272 11 205 17 Amortization of transition obligation 90 — 50 — 258 — 149 — Total pension cost $ 834 $ 1,282 $ 260 $ 106 $ 1,711 $ 1,723 $ 701 $ 317

ACCUMULATED OTHER COMPREHENSI_2

ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)	9 Months Ended
	Jun. 29, 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 thirty-nine week period ended June 29, 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 (210,585 ) (215 ) 27,603 (183,197 ) Amounts reclassified from AOCI related to derivative instruments 3,322 — — 3,322 Balance at June 29, 2019 $ (140,072 ) $ (10,944 ) $ (24,759 ) $ (175,775 ) (1) Unrealized (loss) gain represents derivative instruments, net of taxes of $22,281 and $(954) for the thirteen week periods ended June 29, 2019 and June 30, 2018 , respectively and $63,761 and $(25,679) for the thirty-nine week period s ended June 29, 2019 and June 30, 2018 , respectively. (2) Defined benefit pension plan and other postretirement plan activity represents pension liability adjustments, net of taxes of $130 and $79 for the thirteen and thirty-nine week period s ended June 29, 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 thirty-nine week period s ended June 29, 2019 and June 30, 2018 is provided below (in thousands): Amount reclassified Thirty-Nine Week Periods Ended Description of reclassifications out of accumulated other comprehensive (loss) income June 29, 2019 June 30, 2018 Amortization from redesignated interest rate swap and cap agreements (1) $ 2,277 $ 2,816 Losses from settlement of foreign currency forward exchange contracts (2) 413 — Deferred tax expense (benefit) on reclassifications out of accumulated other comprehensive (loss) income 632 (777 ) Losses reclassified into earnings, net of tax $ 3,322 $ 2,039 (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_2

SUPPLEMENTAL GUARANTOR INFORMATION (Tables)	9 Months Ended
	Jun. 29, 2019
Condensed Financial Information Disclosure [Abstract]
Supplemental Condensed Consolidating Balance Sheet	TRANSDIGM GROUP INCORPORATED CONDENSED CONSOLIDATING BALANCE SHEET AS OF JUNE 29, 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 $ 6,036 $ 2,295,239 $ 280 $ (12,394 ) $ 427,651 $ — $ 2,716,812 Trade accounts receivable - Net — — — 214,145 948,200 — 1,162,345 Inventories - Net — 52,727 — 922,218 453,696 (14,707 ) 1,413,934 Prepaid expenses and other — 29,572 — 44,549 43,983 — 118,104 Total current assets 6,036 2,377,538 280 1,168,518 1,873,530 (14,707 ) 5,411,195 INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES (1,327,280 ) 20,451,875 974,678 11,087,173 5,835,834 (37,022,280 ) — PROPERTY, PLANT AND EQUIPMENT - NET — 18,615 — 482,399 244,524 — 745,538 GOODWILL — 82,924 — 6,453,835 2,147,904 — 8,684,663 OTHER INTANGIBLE ASSETS - NET — 25,670 — 1,900,577 807,767 — 2,734,014 DEFERRED INCOME TAXES — 18,270 — 7 44,498 — 62,775 OTHER — 9,619 — 34,290 20,504 — 64,413 TOTAL ASSETS $ (1,321,244 ) $ 22,984,511 $ 974,958 $ 21,126,799 $ 10,974,561 $ (37,036,987 ) $ 17,702,598 LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY CURRENT LIABILITIES: Current portion of long-term debt $ — $ 75,656 $ — $ 1,745 $ 3,462 $ — $ 80,863 Short-term borrowings - trade receivable securitization facility — — — — 299,951 — 299,951 Accounts payable — 16,556 — 166,610 127,282 — 310,448 Accrued liabilities — 252,767 4,297 213,292 219,022 — 689,378 Total current liabilities — 344,979 4,297 381,647 649,717 — 1,380,640 LONG-TERM DEBT — 15,905,437 491,023 57,770 41,655 — 16,495,885 DEFERRED INCOME TAXES — 560,530 — 19 80,453 — 641,002 OTHER NON-CURRENT LIABILITIES — 265,776 — 152,382 77,527 — 495,685 Total liabilities — 17,076,722 495,320 591,818 849,352 — 19,013,212 TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY (1,321,244 ) 5,907,789 479,638 20,534,981 10,114,579 (37,036,987 ) (1,321,244 ) NONCONTROLLING INTEREST — — — — 10,630 — 10,630 TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY $ (1,321,244 ) $ 22,984,511 $ 974,958 $ 21,126,799 $ 10,974,561 $ (37,036,987 ) $ 17,702,598 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 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 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 THIRTY-NINE WEEK PERIOD ENDED JUNE 29, 2019 (Amounts in thousands) TransDigm Group TransDigm Inc. TransDigm UK Subsidiary Guarantors Non- Guarantor Subsidiaries Eliminations Total Consolidated NET SALES $ — $ 136,514 $ — $ 2,981,434 $ 872,715 $ (143,104 ) $ 3,847,559 COST OF SALES — 144,252 — 1,285,205 576,295 (143,104 ) 1,862,648 GROSS PROFIT — (7,738 ) — 1,696,229 296,420 — 1,984,911 SELLING AND ADMINISTRATIVE EXPENSES — 198,924 14 257,146 105,223 — 561,307 AMORTIZATION OF INTANGIBLE ASSETS — (7,047 ) — 66,588 25,445 — 84,986 (LOSS) INCOME FROM OPERATIONS — (199,615 ) (14 ) 1,372,495 165,752 — 1,338,618 INTEREST EXPENSE (INCOME) - NET — 604,886 26,501 (6,605 ) (10,081 ) — 614,701 REFINANCING COSTS — 3,272 268 — — — 3,540 OTHER (INCOME) EXPENSE — (69,698 ) 89,539 (593,642 ) 571,711 — (2,090 ) EQUITY IN INCOME OF SUBSIDIARIES (542,900 ) (1,280,975 ) — — — 1,823,875 — INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES 542,900 542,900 (116,322 ) 1,972,742 (395,878 ) (1,823,875 ) 722,467 INCOME TAX PROVISION — — — 112,108 67,075 — 179,183 INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS 542,900 542,900 (116,322 ) 1,860,634 (462,953 ) (1,823,875 ) 543,284 LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX — — — — — — — NET INCOME (LOSS) INCLUDING NONCONTROLLING INTERESTS 542,900 542,900 (116,322 ) 1,860,634 (462,953 ) (1,823,875 ) 543,284 NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS — — — — (384 ) — (384 ) NET INCOME (LOSS) ATTRIBUTABLE TO TD GROUP $ 542,900 $ 542,900 $ (116,322 ) $ 1,860,634 $ (463,337 ) $ (1,823,875 ) $ 542,900 OTHER COMPREHENSIVE (LOSS) INCOME, NET OF TAX (179,875 ) 57,853 — 12,290 (9,011 ) (61,132 ) (179,875 ) TOTAL COMPREHENSIVE INCOME (LOSS) $ 363,025 $ 600,753 $ (116,322 ) $ 1,872,924 $ (472,348 ) $ (1,885,007 ) $ 363,025 TRANSDIGM GROUP INCORPORATED CONDENSED CONSOLIDATING STATEMENT OF INCOME AND COMPREHENSIVE INCOME FOR THE THIRTY-NINE WEEK PERIOD ENDED JUNE 30, 2018 (Amounts in thousands) TransDigm Group TransDigm Inc. TransDigm UK Subsidiary Guarantors Non- Guarantor Subsidiaries Eliminations Total Consolidated NET SALES $ — $ 118,783 $ — $ 2,243,838 $ 459,571 $ (60,500 ) $ 2,761,692 COST OF SALES — 68,022 — 895,381 278,545 (60,500 ) 1,181,448 GROSS PROFIT — 50,761 — 1,348,457 181,026 — 1,580,244 SELLING AND ADMINISTRATIVE EXPENSES — 74,949 — 200,298 50,961 — 326,208 AMORTIZATION OF INTANGIBLE ASSETS — 1,038 — 46,533 6,222 — 53,793 (LOSS) INCOME FROM OPERATIONS — (25,226 ) — 1,101,626 123,843 — 1,200,243 INTEREST EXPENSE (INCOME) - NET — 478,341 2,569 (4 ) 8,870 — 489,776 REFINANCING COSTS — 5,839 71 — — — 5,910 OTHER (INCOME) EXPENSE — (241 ) — (1,646 ) 2,752 — 865 EQUITY IN INCOME OF SUBSIDIARIES (728,299 ) (913,523 ) — — — 1,641,822 — INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES 728,299 404,358 (2,640 ) 1,103,276 112,221 (1,641,822 ) 703,692 INCOME TAX PROVISION — (323,941 ) — 283,975 12,416 — (27,550 ) INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS 728,299 728,299 (2,640 ) 819,301 99,805 (1,641,822 ) 731,242 LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX — — — (2,310 ) (633 ) — (2,943 ) NET INCOME (LOSS) INCLUDING NONCONTROLLING INTERESTS 728,299 728,299 (2,640 ) 816,991 99,172 (1,641,822 ) 728,299 NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS — — — — — — — NET INCOME (LOSS) ATTRIBUTABLE TO TD GROUP $ 728,299 $ 728,299 $ (2,640 ) $ 816,991 $ 99,172 $ (1,641,822 ) $ 728,299 OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX 61,426 66,480 — 8,553 (15,123 ) (59,910 ) 61,426 TOTAL COMPREHENSIVE INCOME (LOSS) $ 789,725 $ 794,779 $ (2,640 ) $ 825,544 $ 84,049 $ (1,701,732 ) $ 789,725
Supplemental Condensed Consolidating Cash Flow Statement	TRANSDIGM GROUP INCORPORATED CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS FOR THE THIRTY-NINE WEEK PERIOD ENDED JUNE 29, 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 $ — $ (420,927 ) $ (110,835 ) $ 1,951,008 $ (660,749 ) $ 9,859 $ 768,356 INVESTING ACTIVITIES: Capital expenditures — (2,760 ) — (69,992 ) (7,669 ) — (80,421 ) Payments made in connection with acquisitions, net of cash acquired — (3,923,850 ) — (33,094 ) — — (3,956,944 ) Net cash used in investing activities — (3,926,610 ) — (103,086 ) (7,669 ) — (4,037,365 ) FINANCING ACTIVITIES: Intercompany activities (34,323 ) 946,145 112,012 (1,858,553 ) 844,578 (9,859 ) — Proceeds from exercise of stock options 64,279 — — — — — 64,279 Dividend equivalent payments (24,309 ) — — — — — (24,309 ) Repayment on term loans — (57,321 ) — — — — (57,321 ) Cash tender and redemption of 2020 Notes — (550,000 ) — — — — (550,000 ) Proceeds from 2027 Notes, net — 544,462 — — — — 544,462 Proceeds from 2026 Secured Notes, net — 3,935,715 — — — — 3,935,715 Financing fees and other — 2,338 (1,022 ) — (2,502 ) — (1,186 ) Net cash provided by (used in) financing activities 5,647 4,821,339 110,990 (1,858,553 ) 842,076 (9,859 ) 3,911,640 EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS — — — — 1,164 — 1,164 INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS 5,647 473,802 155 (10,631 ) 174,822 — 643,795 CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD 389 1,821,437 125 (1,763 ) 252,829 — 2,073,017 CASH AND CASH EQUIVALENTS, END OF PERIOD $ 6,036 $ 2,295,239 $ 280 $ (12,394 ) $ 427,651 $ — $ 2,716,812 TRANSDIGM GROUP INCORPORATED CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS FOR THE THIRTY-NINE WEEK PERIOD ENDED JUNE 30, 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 $ — $ (291,416 ) $ 2,110 $ 863,173 $ 117,043 $ — $ 690,910 INVESTING ACTIVITIES: Capital expenditures — (1,372 ) — (41,999 ) (6,726 ) — (50,097 ) Payments made in connection with acquisitions, net of cash acquired — (582,262 ) — — — — (582,262 ) Proceeds in connection with sale of discontinued operations — 57,686 — — — — 57,686 Net cash used in investing activities — (525,948 ) — (41,999 ) (6,726 ) — (574,673 ) FINANCING ACTIVITIES: Intercompany activities 14,035 1,392,169 (492,371 ) (820,946 ) (92,887 ) — — Proceeds from exercise of stock options 40,621 — — — — — 40,621 Dividend equivalent payments (56,148 ) — — — — — (56,148 ) Proceeds from term loans, net — 12,779,772 — — — — 12,779,772 Repayment on term loans — (12,155,198 ) — — — — (12,155,198 ) Proceeds from 6.875% 2026 Notes, net — — 490,411 — — — 490,411 Financing fees and other — (9,904 ) — — — — (9,904 ) Net cash (used in) provided by financing activities (1,492 ) 2,006,839 (1,960 ) (820,946 ) (92,887 ) — 1,089,554 EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS — — — — (2,979 ) — (2,979 ) (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS (1,492 ) 1,189,475 150 228 14,451 — 1,202,812 CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD 2,416 439,473 — (203 ) 208,875 — 650,561 CASH AND CASH EQUIVALENTS, END OF PERIOD $ 924 $ 1,628,948 $ 150 $ 25 $ 223,326 $ — $ 1,853,373

DESCRIPTION OF THE BUSINESS - N

DESCRIPTION OF THE BUSINESS - Narratives (Details)	Jun. 29, 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	Jun. 29, 2019	Sep. 30, 2018	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018	Sep. 30, 2018
Business Acquisition [Line Items]
Gross Amount								$ 16,747,245,000	$ 12,699,932,000		$ 16,747,245,000		$ 12,699,932,000
GOODWILL								8,684,663,000	6,223,290,000		8,684,663,000		6,223,290,000
NET SALES								1,658,319,000		$ 980,662,000	3,847,559,000	$ 2,761,692,000
INCOME FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS								144,610,000		217,391,000	543,284,000	731,242,000
NET INCOME INCLUDING NONCONTROLLING INTERESTS								144,450,000		217,391,000	542,900,000	731,242,000
AMORTIZATION OF INTANGIBLE ASSETS								41,889,000		19,224,000	84,986,000	53,793,000
Amortization of inventory step-up											109,348,000	3,165,000
Interest Income (Expense), Net								(241,292,000)		(167,577,000)	(614,701,000)	(489,776,000)
Payments to Acquire Businesses, Net of Cash Acquired											3,956,944,000	582,262,000
LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX								0		(145,000)	$ 0	(2,943,000)
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								1,658,319,000		1,477,729,000	$ 4,723,660,000	4,253,811,000
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	2,503,798,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	992,000,000
NET SALES								545,300,000			670,300,000
INCOME FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS								18,100,000			12,800,000
AMORTIZATION OF INTANGIBLE ASSETS								21,200,000			24,800,000
Amortization of inventory step-up								88,900,000			103,900,000
Business Acquisition, Transaction Costs								46,200,000			71,700,000
Interest Income (Expense), Net								64,700,000			89,200,000
Payments to Acquire Businesses, Net of Cash Acquired	3,536,300,000
Restricted cash	387,600,000
Interest Expense								64,700,000			97,400,000
Interest income								0			8,200,000
Preliminary intangible asset amortization								8,300,000			21,200,000
Preliminary Inventory Step-up	$ 118,700,000
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax								$ 252,159,000		$ 197,030,000	$ 611,750,000	$ 377,215,000
Business Acquisition, Pro Forma Earnings Per Share, Basic								$ 4,480		$ 3,540	$ 10,440	$ 5,770
Extant [Member]
Business Acquisition [Line Items]
Business acquisition, Intangibles, Tax Deductible Amount				$ 62,500,000
Business Acquisition Purchase Price Adjustment													200,000
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net				$ 533,145,000
Tax benefit recognition period (in years)				15 years
GOODWILL				$ 407,046,000
Amount of goodwill expected to be tax deductible				12,400,000
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			$ 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		$ 0	0	$ 11,808,000
LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX								$ 0		$ (145,000)	$ 0	$ (2,943,000)
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	Jun. 29, 2019	Mar. 14, 2019	Sep. 30, 2018	Apr. 24, 2018
Business Acquisition [Line Items]
Goodwill	$ 8,684,663		$ 6,223,290
Extant [Member]
Business Acquisition [Line Items]
Current assets, excluding cash acquired				$ 53,325
Property, plant, and equipment				4,103
Intangible assets				105,000
Goodwill				407,046
Total assets acquired				569,474
Current liabilities				9,876
Other noncurrent liabilities				26,453
Total liabilities assumed				36,329
Net assets acquired				$ 533,145
Extant [Member]
Business Acquisition [Line Items]
Current assets, excluding cash acquired		$ 1,417,467
Property, plant, and equipment		338,843
Intangible assets		992,000
Goodwill		2,503,798
Other		71,130
Total assets acquired		5,323,238
Current liabilities		918,649
Other noncurrent liabilities		480,739
Total liabilities assumed		1,399,388
Net assets acquired		$ 3,923,850

ACQUISITIONS AND DIVESTITURES_3

ACQUISITIONS AND DIVESTITURES Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
NET SALES	$ 1,658,319	$ 980,662	$ 3,847,559	$ 2,761,692
LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX	0	(145)	0	(2,943)
Discontinued Operations, Held-for-sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
NET SALES	0	0	0	11,808
Income from discontinued operations before income taxes	0	0	0	354
Income from discontinued operations, net of tax	0	0	0	2,016
LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX	0	(145)	0	(2,943)
Income (loss) from discontinued operations before gain or loss on disposal net of tax	0	0	0	2,370
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	$ 0	$ (145)	$ 0	$ (5,313)

REVENUE (Details)

REVENUE (Details) - Accounting Standards Update 2014-09 - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Dec. 29, 2018	Jun. 29, 2019
Cumulative Effect on Retained Earnings, Net of Tax	$ 3,284
Accumulated Deficit
Cumulative Effect on Retained Earnings, Net of Tax	$ 3,284	$ 3,300

REVENUE Tables (Details)

REVENUE Tables (Details) - USD ($) $ in Thousands		9 Months Ended
		Jun. 29, 2019	Oct. 01, 2018		Sep. 30, 2018
Contract with Customer, Asset, Net, Current		$ 43,717	$ 18,328	[1]
Contract with Customer, Asset, Current, Increase or Decrease	[1]	25,389
Unbilled Receivables, Current	[2]		18,328		$ 10,056
Inventories - Net		1,413,934	801,315		805,292
DEFERRED INCOME TAXES		641,002	400,507		399,496
Accumulated deficit		(1,709,790)	(2,243,294)		(2,246,578)
Contract with Customer, Asset, Net, Noncurrent		9,596	118	[3]
Contract with customer, Asset, Non-current, Increase or Decrease	[3]	9,478
Contract with Customer, Asset, after Allowance for Credit Loss		53,313	18,446
Contract assets, Increase or Decrease		34,867
Contract with Customer, Liability, Current		7,765	2,742	[4]
Contract liabilities, Current, Increase or Decrease	[4]	5,023
Contract with Customer, Liability, Noncurrent		7,341	0	[5]
Contract liabilities, Non-current, Increase or Decrease	[5]	7,341
Contract with Customer, Liability		15,106	2,742
Contract Liabilities, Increase or Decrease		12,364
Net Contract Asset		38,207	$ 15,704
Net Contract Asset, Increase or Decrease		$ 22,503
Accounting Standards Update 2014-09
Unbilled Receivables, Current	[2]				8,272
Inventories - Net					(3,977)
DEFERRED INCOME TAXES					1,011
Accounting Standards Update 2014-09 | Accumulated Deficit
Accumulated deficit					$ 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		9 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Income from continuing operations including noncontrolling interests	$ 144,610	$ 217,391	$ 543,284	$ 731,242
Net income attributable to noncontrolling interests	(160)	0	(384)	0
Net income from continuing operations attributable to TD Group	144,450	217,391	542,900	731,242
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	144,450	217,391	518,591	675,094
LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX	0	(145)	0	(2,943)
Net income applicable to TD Group common stock - basic and diluted	$ 144,450	$ 217,246	$ 518,591	$ 672,151
Denominator for basic and diluted earnings per share under the two-class method, in shares:
Weighted-average common shares outstanding	53,208	52,470	52,994	52,241
Vested options deemed participating securities	3,057	3,127	3,271	3,357
Basic and diluted (in shares)	56,265	55,597	56,265	55,598
Net earnings per share from continuing operations - basic and diluted	$ 2.57	$ 3.91	$ 9.22	$ 12.14
Net loss per share from discontinued operations - basic and diluted	0	0	0	(0.05)
Basic and diluted earnings per share (in dollars per share)	$ 2.57	$ 3.91	$ 9.22	$ 12.09

INVENTORIES - Schedule of Inven

INVENTORIES - Schedule of Inventory (Details) - USD ($) $ in Thousands	Jun. 29, 2019	Oct. 01, 2018	Sep. 30, 2018
Inventory Disclosure [Abstract]
Raw materials and purchased component parts	$ 839,458		$ 540,290
Work-in-progress	457,894		237,335
Finished goods	233,103		127,018
Total	1,530,455		904,643
Reserves for excess and obsolete inventory	(116,521)		(99,351)
Inventories - Net	$ 1,413,934	$ 801,315	$ 805,292

INTANGIBLE ASSETS - Intangible

INTANGIBLE ASSETS - Intangible Assets Subject to Amortization (Details) - USD ($) $ in Thousands	Jun. 29, 2019	Sep. 30, 2018
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	$ 3,263,310	$ 2,232,697
Intangible Assets, Accumulated Amortization	529,296	444,293
Total	2,734,014	1,788,404
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,867,800	1,347,314
Accumulated Amortization	474,621	416,579
Net	1,393,179	930,735
Order backlog
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	89,628	12,200
Accumulated Amortization	24,352	5,409
Net	65,276	6,791
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	251,718	62,561
Accumulated Amortization	21,453	14,277
Net	230,265	48,284
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	16,848	10,873
Accumulated Amortization	8,870	8,028
Net	7,978	2,845
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill), Gross	1,037,316	799,749
Indefinite-Lived Intangible Assets, Accumulated Amortization	0	0
Intangible Assets (Excluding Goodwill), Net	$ 1,037,316	$ 799,749

INTANGIBLE ASSETS - Summary of

INTANGIBLE ASSETS - Summary of changes in carrying value of Goodwill (Details) $ in Thousands	9 Months Ended
	Jun. 29, 2019USD ($)
Goodwill [Line Items]
Goodwill, Acquired During Period	$ 2,446,686
Goodwill [Roll Forward]
Balance at beginning of period	6,223,290
Purchase price allocation adjustments	22,121
Currency translation adjustment	(7,434)
Balance at end of period	8,684,663
Power & Control
Goodwill [Line Items]
Goodwill, Acquired During Period	668,355
Goodwill [Roll Forward]
Balance at beginning of period	3,677,683
Purchase price allocation adjustments	13,111
Currency translation adjustment	268
Balance at end of period	4,359,417
Airframe
Goodwill [Line Items]
Goodwill, Acquired During Period	1,224,542
Goodwill [Roll Forward]
Balance at beginning of period	2,452,332
Purchase price allocation adjustments	13,979
Currency translation adjustment	(5,824)
Balance at end of period	3,685,029
Non- aviation
Goodwill [Line Items]
Goodwill, Acquired During Period	553,789
Goodwill [Roll Forward]
Balance at beginning of period	93,275
Purchase price allocation adjustments	(4,969)
Currency translation adjustment	(1,878)
Balance at end of period	$ 640,217

INTANGIBLE ASSETS - Narratives

INTANGIBLE ASSETS - Narratives (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 41,889	$ 19,224	$ 84,986	$ 53,793
Estimated Amortization Expense, 2019	126,500		126,500
Estimated Amortization Expense, 2020	164,400		164,400
Estimated Amortization Expense, 2021	112,300		112,300
Estimated Amortization Expense, 2022	112,300		112,300
Estimated Amortization Expense, 2023	112,300		112,300
Estimated Amortization Expense, 2024	$ 112,300		$ 112,300

INTANGIBLE ASSETS - Acquired In

INTANGIBLE ASSETS - Acquired Intangibles (Details) $ in Thousands	9 Months Ended
	Jun. 29, 2019USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill, Acquired During Period	$ 2,446,686
Indefinite-lived Intangible Assets Acquired	2,698,386
Finite-lived Intangible Assets Acquired	$ 743,535
Finite-Lived Intangible Asset, Useful Life	18 years
Intangible Assets, Acquired During the Period	$ 3,441,921
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	$ 156,035
Finite-Lived Intangible Asset, Useful Life	20 years
Goodwill [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill, Acquired During Period	$ 2,446,686
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		Jun. 29, 2019	Feb. 01, 2019	Sep. 30, 2018
Debt Instrument [Line Items]
Gross Amount		$ 16,747,245		$ 12,699,932
Debt Issuance Costs		(154,184)		(101,170)
Debt Instrument, Unamortized Discount (Premium), Net		(16,313)		(20,999)
Short-term borrowings - trade receivable securitization facility		299,951		299,519
Total debt outstanding		16,576,748		12,577,763
Long-term Debt, Current Maturities, Net		80,863		75,817
Long-term Debt, Excluding Current Maturities, Gross		16,665,611		12,623,505
Deferred Finance Costs, Excluding Current Maturities		(153,413)		(100,560)
Debt Instrument, Unamortized Discount, Excluding Current Maturities		(16,313)		(20,999)
Long-term debt		16,495,885		12,501,946
Term loans
Debt Instrument [Line Items]
Gross Amount		7,542,612		7,599,932
Debt Issuance Costs		(60,847)		(69,697)
Debt Instrument, Unamortized Discount (Premium), Net		(18,168)		(21,030)
Total debt outstanding	[1]	7,463,597		$ 7,509,205
Senior Subordinated Notes | 5.50% senior subordinated notes due 2020 (2020 Notes)
Debt Instrument [Line Items]
Interest rate				5.50%
Gross Amount				$ 550,000
Debt Issuance Costs				(2,187)
Debt Instrument, Unamortized Discount (Premium), Net				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		(4,421)		(5,501)
Debt Instrument, Unamortized Discount (Premium), Net		0		0
Total debt outstanding	[1]	$ 1,145,579		$ 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		(5,984)		(6,866)
Debt Instrument, Unamortized Discount (Premium), Net		0		0
Total debt outstanding	[1]	$ 1,194,016		$ 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		(3,109)		(3,505)
Debt Instrument, Unamortized Discount (Premium), Net		3,226		3,636
Total debt outstanding	[1]	$ 750,117		$ 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		(7,042)		(7,798)
Debt Instrument, Unamortized Discount (Premium), Net		0		0
Total debt outstanding	[1]	$ 942,958		$ 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		(5,723)		(5,616)
Debt Instrument, Unamortized Discount (Premium), Net		(3,254)		(3,605)
Total debt outstanding	[1]	$ 491,023		490,779
Senior Subordinated Notes | Senior Subordinated Notes $550M Due 2027 7.50% [Member]
Debt Instrument [Line Items]
Interest rate		7.50%	7.50%
Gross Amount		$ 550,000	$ 550,000
Debt Issuance Costs		(5,259)
Debt Instrument, Unamortized Discount (Premium), Net		0
Total debt outstanding	[1]	$ 544,741		0
Senior Notes | Senior Secured Notes $4B Due 2026 6.25% [Member]
Debt Instrument [Line Items]
Interest rate		6.25%
Gross Amount		$ 4,000,000
Debt Issuance Costs		(61,799)
Debt Instrument, Unamortized Discount (Premium), Net		1,883
Total debt outstanding		3,940,084
Government Refundable Advances [Member]
Debt Instrument [Line Items]
Debt Issuance Costs		0
Debt Instrument, Unamortized Discount (Premium), Net		0
Government refundable advances		39,641		0
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Debt Issuance Costs		0
Debt Instrument, Unamortized Discount (Premium), Net		0
Capital Lease Obligations		64,992		0
Asset-backed Securities
Debt Instrument [Line Items]
Short-term borrowings—trade receivable securitization facility, Gross		300,000		300,000
Debt Issuance Costs		(49)		(481)
Debt Instrument, Unamortized Discount (Premium), Net		0		0
Short-term borrowings - trade receivable securitization facility	[1]	299,951		299,519
Less current portion
Debt Instrument [Line Items]
Debt Issuance Costs		(771)		(610)
Debt Instrument, Unamortized Discount (Premium), Net				0
Original Issue Discount or Premium		0
Long-term Debt, Current Maturities, Gross		81,634		76,427
Long-term Debt, Current Maturities, Net		$ 80,863		$ 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 ($)	Feb. 01, 2019	Jan. 30, 2019	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018	Mar. 15, 2019	Mar. 14, 2019	Sep. 30, 2018
Debt Instrument [Line Items]
Interest Payable, Current			$ 191,700,000		$ 191,700,000				$ 96,600,000
Gross Amount			16,747,245,000		16,747,245,000				12,699,932,000
Refinancing Costs			106,000	$ 4,159,000	3,540,000	$ 5,910,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Remaining Borrowing Capacity			726,000,000		726,000,000
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			34,000,000		34,000,000
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					800,000
Debt Issuance Costs, Gross			65,500,000		65,500,000
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%		7.50%		7.50%
Debt Instrument, Unamortized Premium			$ 5,500,000		$ 5,500,000
Senior Subordinated Notes | 5.50% senior subordinated notes due 2020 (2020 Notes)
Debt Instrument [Line Items]
Gross Amount									$ 550,000,000
Interest rate									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			7,542,612,000		7,542,612,000				$ 7,599,932,000
Government Refundable Advances [Member]
Debt Instrument [Line Items]
Government refundable advances			39,641,000		39,641,000				0
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Capital Lease Obligations			$ 64,992,000		$ 64,992,000				$ 0

INCOME TAXES - Narratives (Deta

INCOME TAXES - Narratives (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018	Sep. 30, 2018
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%
Effective income tax rate	29.60%	18.10%	24.80%	(3.90%)
Unrecognized tax benefits	$ 18.6		$ 18.6		$ 14.1
Tax rate effect	16.8		16.8		$ 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 ($)		Jun. 29, 2019	Sep. 30, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents		$ 2,716,812,000	$ 2,073,017,000
Short-term borrowings - trade receivable securitization facility		299,951,000	299,519,000
Long-term Debt		16,576,748,000	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]	3,007,000	36,160,000
Interest rate cap agreements	[1]	0	61,126,000
Foreign Currency Contract, Asset		242,000	0
Prepaid Expenses and Other Current Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate cap agreements	[2]	687,000	11,634,000
Foreign Currency Contract, Asset		548,000	0
Accrued Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap agreements	[3]	8,914,000	528,000
Foreign Currency Contracts, Liability	[3]	7,497,000	0
Other Noncurrent Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap agreements	[4]	165,065,000	142,000
Foreign Currency Contracts, Liability	[4]	337,000	0
Term loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	7,463,597,000	7,509,205,000
Government Refundable Advances [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Government refundable advances		39,641,000	0
Capital Lease Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Capital Lease Obligations		64,992,000	0
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, Fair Value		2,716,812,000	2,073,017,000
Level 2 | Other Noncurrent Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate cap agreements, Fair Value	[1]	3,007,000	36,160,000
Interest Rate Swap Asset at Fair Value	[1]	0	61,126,000
Foreign Currency Contract, Asset, Fair Value Disclosure		242,000	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]	687,000	11,634,000
Foreign Currency Contract, Asset, Fair Value Disclosure		548,000	0
Level 2 | Accrued Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap agreements, Fair Value	[3]	8,914,000	528,000
Foreign Currency Contracts, Liability, Fair Value Disclosure	[3]	7,497,000	0
Level 2 | Other Noncurrent Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap agreements, Fair Value	[4]	165,065,000	142,000
Foreign Currency Contracts, Liability, Fair Value Disclosure	[4]	337,000	0
Level 2 | Term loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value		7,358,955,000	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		39,641,000	0
Capital Lease Obligations, Fair Value		64,992,000	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]	1,145,579,000	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		1,161,500,000	1,155,750,000
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]	1,194,016,000	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		1,209,000,000	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]	750,117,000	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		753,750,000	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]	942,958,000	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		954,750,000	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]	491,023,000	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		502,500,000	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]	3,940,084,000	0
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		4,190,000,000	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]	544,741,000	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		572,000,000	0
Asset-backed Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings - trade receivable securitization facility	[5]	299,951,000	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		$ 299,951,000	$ 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		9 Months Ended
		Jun. 29, 2019	Jun. 30, 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]	$ (2,277)	$ (2,816)
[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		Jun. 29, 2019	Sep. 30, 2018
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset		$ 3,007	$ 108,250
Derivative Asset, Fair Value, Gross Liability		(173,292)	0
Derivative Asset, Collateral, Obligation to Return Cash, Offset		687	670
Derivative Liability, Collateral, Right to Reclaim Cash, Offset		(687)	(670)
Derivative Asset	[1]	3,694	108,920
Derivative Liability	[1]	173,979	670
Interest Rate Cap
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset		3,007	36,160
Derivative Asset, Fair Value, Gross Liability		0	0
Interest Rate Swap
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	[2]	0	72,090
Derivative Asset, Fair Value, Gross Liability	[2]	$ (173,292)	$ 0
[1]	Refer to Note 11, "Fair Value Measurements," for the condensed consolidated balance sheet classification of our interest rate swap and cap agreements.
[2]	The increase in the interest rate swap liability is primarily attributable to a downward trend in the LIBO rate during fiscal 2019.

DERIVATIVES AND HEDGING ACTIV_5

DERIVATIVES AND HEDGING ACTIVITIES - Narratives (Details) - USD ($) $ in Thousands		9 Months Ended
		Jun. 29, 2019	Jun. 30, 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]	$ (2,277)	$ (2,816)
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		800	500
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		3,600	$ 3,000
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		$ 2,100
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		$ 13,400
Interest Rate Cap
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Gross Amount to be Transferred		7,400
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Tax to be Transferred		$ 1,700
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		$ 1,400
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		9,300
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Tax to be Transferred		2,200
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		$ 327,500
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Gross Amount to be Transferred		6,200
Selling, General and Administrative Expenses [Member]
Derivative [Line Items]
Gain (Loss) on foreign currency contracts not designated as accounting hedges		200
Sales [Member]
Derivative [Line Items]
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net		$ 400
[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)	9 Months Ended
	Jun. 29, 2019Segment
Segment Reporting [Abstract]
Number of reporting segments	3

SEGMENTS - Net Sales by Reporta

SEGMENTS - Net Sales by Reportable Segments (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
NET SALES		$ 1,658,319	$ 980,662	$ 3,847,559	$ 2,761,692
Operating Segments | Power & Control
Segment Reporting Information [Line Items]
NET SALES		768,548	546,905	1,960,040	1,558,083
Operating Segments | Airframe
Segment Reporting Information [Line Items]
NET SALES		711,536	398,596	1,609,360	1,101,771
Operating Segments | Non- aviation
Segment Reporting Information [Line Items]
NET SALES		178,235	35,161	278,159	101,838
Commercial OEM [Member] | Operating Segments | Power & Control
Segment Reporting Information [Line Items]
NET SALES		142,539	130,935	404,207	367,818
Commercial OEM [Member] | Operating Segments | Airframe
Segment Reporting Information [Line Items]
NET SALES		153,218	137,030	437,567	368,172
Commercial Aftermarket [Member] | Operating Segments | Power & Control
Segment Reporting Information [Line Items]
NET SALES		185,727	180,895	524,631	500,098
Commercial Aftermarket [Member] | Operating Segments | Airframe
Segment Reporting Information [Line Items]
NET SALES		197,750	179,337	567,208	511,156
Defense [Member] | Operating Segments | Power & Control
Segment Reporting Information [Line Items]
NET SALES		293,631	235,075	854,096	690,167
Defense [Member] | Operating Segments | Airframe
Segment Reporting Information [Line Items]
NET SALES		103,264	82,229	284,765	222,443
Esterline [Member] | Operating Segments | Power & Control
Segment Reporting Information [Line Items]
NET SALES	[1]	146,651	0	177,106	0
Esterline [Member] | Operating Segments | Airframe
Segment Reporting Information [Line Items]
NET SALES	[1]	$ 257,304	$ 0	$ 319,820	$ 0
[1]	The sales market classifications associated with the acquired Esterline businesses are currently being assessed by TransDigm management to ensure the reported market classifications are in compliance with TransDigm policy and being computed consistently with that of the existing TransDigm legacy businesses. Therefore, the sales associated with the Esterline acquisition are excluded from the market classifications reported above as of June 29, 2019.

SEGMENTS - EBITDA Defined by Se

SEGMENTS - EBITDA Defined by Segment to Consolidated Income Before Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	$ 690,997	$ 487,141	$ 1,749,443	$ 1,351,797
Interest expense - net	241,292	167,577	614,701	489,776
Stock compensation expense			70,082	36,411
Refinancing Costs	106	4,159	3,540	5,910
Income from continuing operations before income taxes	205,519	265,541	722,467	703,692
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	728,668	496,023	1,819,308	1,380,102
Operating Segments | Power & Control
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	377,469	288,202	1,005,955	808,539
Operating Segments | Airframe
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	306,027	196,746	740,146	541,171
Operating Segments | Non- aviation
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	45,172	11,075	73,207	30,392
Corporate, Non-Segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	37,671	8,882	69,865	28,305
Segment Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Depreciation and amortization expense	71,318	33,925	147,544	95,534
Interest expense - net	241,292	167,577	614,701	489,776
Acquisition-related costs	136,385	10,381	186,451	16,940
Stock compensation expense	31,809	13,708	70,082	36,411
Refinancing Costs		4,159		5,910
Other, net	$ 4,568	$ (8,150)	$ 4,658	$ 3,534

SEGMENTS - Total Assets by Segm

SEGMENTS - Total Assets by Segment (Details) - USD ($) $ in Thousands	Jun. 29, 2019	Sep. 30, 2018
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 17,702,598	$ 12,197,467
Operating Segments | Power & Control
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	7,587,184	5,698,524
Operating Segments | Airframe
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	7,371,933	4,091,011
Operating Segments | Non- aviation
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	1,284,616	234,770
Corporate, Non-Segment
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,458,865	$ 2,173,162

RETIREMENT BENEFITS Tables (Det

RETIREMENT BENEFITS Tables (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
UNITED STATES
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Service Cost	$ 1,974	$ 73	$ 2,921	$ 218
Defined Benefit Plan, Interest Cost	3,251	189	4,914	519
Defined Benefit Plan, Expected Return (Loss) on Plan Assets	(4,574)	(131)	(6,654)	(390)
Defined Benefit Plan, Amortization of Gain (Loss)	93	79	272	205
Defined Benefit Plan, Amortization of Transition Asset (Obligation)	90	50	258	149
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	834	260	1,711	701
Non-US [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Service Cost	1,516	54	2,054	162
Defined Benefit Plan, Interest Cost	1,467	46	2,014	136
Defined Benefit Plan, Expected Return (Loss) on Plan Assets	(1,705)	0	(2,356)	2
Defined Benefit Plan, Amortization of Gain (Loss)	4	6	11	17
Defined Benefit Plan, Amortization of Transition Asset (Obligation)	0	0	0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	$ 1,282	$ 106	$ 1,723	$ 317

ACCUMULATED OTHER COMPREHENSI_3

ACCUMULATED OTHER COMPREHENSIVE LOSS - Narratives (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax	$ 130		$ 79
Other Comprehensive Loss, Derivatives Qualifying as Hedges, Tax	$ 22,281	$ (954)	$ 63,761	$ (25,679)

ACCUMULATED OTHER COMPREHENSI_4

ACCUMULATED OTHER COMPREHENSIVE LOSS - Schedule of Accumulated Other Comprehensive Loss (Details) $ in Thousands	9 Months Ended
	Jun. 29, 2019USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	$ 4,100
Current-period other comprehensive (loss) gain	(183,197)
Amounts reclassified from AOCI related to derivative instruments	3,322
Balance at end of period	(175,775)
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	(210,585)	[1]
Amounts reclassified from AOCI related to derivative instruments	(3,322)	[1]
Balance at end of period	(140,072)	[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	(215)	[2]
Amounts reclassified from AOCI related to derivative instruments	0	[2]
Balance at end of period	(10,944)	[2]
Currency translation adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(52,362)
Current-period other comprehensive (loss) gain	27,603
Amounts reclassified from AOCI related to derivative instruments	0
Balance at end of period	$ (24,759)
[1]	Unrealized (loss) gain represents derivative instruments, net of taxes of $22,281 and $(954) for the thirteen week periods ended June 29, 2019 and June 30, 2018 , respectively and $63,761 and $(25,679) for the thirty-nine week period s ended June 29, 2019 and June 30, 2018 , respectively.
[2]	Defined benefit pension plan and other postretirement plan activity represents pension liability adjustments, net of taxes of $130 and $79 for the thirteen and thirty-nine week period s ended June 29, 2019 , respectively.

ACCUMULATED OTHER COMPREHENSI_5

ACCUMULATED OTHER COMPREHENSIVE LOSS - Schedule of Amounts Recognized in Other Comprehensive Loss (Details) - USD ($) $ in Thousands		3 Months Ended						9 Months Ended
		Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 30, 2017	Jun. 29, 2019	Jun. 30, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Deferred tax expense (benefit) on reclassifications out of accumulated other comprehensive (loss) income		$ (60,909)			$ (48,150)			$ (179,183)	$ 27,550
Losses reclassified into earnings, net of tax		$ 144,610	$ 202,632	$ 196,042	$ 217,246	$ 196,278	$ 314,775	543,284	728,299
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]							2,277	2,816
Losses from settlement of foreign currency forward contracts	[2]							413	0
Deferred tax expense (benefit) on reclassifications out of accumulated other comprehensive (loss) income								632	(777)
Losses reclassified into earnings, net of tax								$ 3,322	$ 2,039
[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	Jun. 29, 2019	Oct. 01, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 30, 2017	Sep. 30, 2017
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	$ 2,716,812		$ 2,073,017
Trade accounts receivable - Net	1,162,345		704,310
Inventories - Net	1,413,934	$ 801,315	805,292
Prepaid expenses and other	118,104		74,668
Total current assets	5,411,195		3,657,287
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	0		0
PROPERTY, PLANT AND EQUIPMENT - NET	745,538		388,333
GOODWILL	8,684,663		6,223,290
OTHER INTANGIBLE ASSETS - NET	2,734,014		1,788,404
DEFERRED INCOME TAXES	62,775
OTHER	64,413		140,153
TOTAL ASSETS	17,702,598		12,197,467
Current portion of long-term debt	80,863		75,817
Short-term borrowings - trade receivable securitization facility	299,951		299,519
Accounts payable	310,448		173,603
Accrued liabilities	689,378		351,443
Total current liabilities	1,380,640		900,382
LONG-TERM DEBT	16,495,885		12,501,946
DEFERRED INCOME TAXES	641,002	$ 400,507	399,496
OTHER NON-CURRENT LIABILITIES	495,685		204,114
Total liabilities	19,013,212		14,005,938
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	(1,321,244)		(1,808,471)	$ (2,098,480)	$ (2,309,337)	$ (2,599,713)	$ (2,951,204)
NONCONTROLLING INTERESTS	10,630		0
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	17,702,598		12,197,467
Eliminations
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	0		0
Trade accounts receivable - Net	0		0
Inventories - Net	(14,707)		(4,457)
Prepaid expenses and other	0		0
Total current assets	(14,707)		(4,457)
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	(37,022,280)		(20,839,485)
PROPERTY, PLANT AND EQUIPMENT - NET	0		0
GOODWILL	0		0
OTHER INTANGIBLE ASSETS - NET	0		0
DEFERRED INCOME TAXES	0
OTHER	0		0
TOTAL ASSETS	(37,036,987)		(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	(37,036,987)		(20,843,942)
NONCONTROLLING INTERESTS	0		0
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	(37,036,987)		(20,843,942)
TransDigm Group
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	6,036		389
Trade accounts receivable - Net	0		0
Inventories - Net	0		0
Prepaid expenses and other	0		0
Total current assets	6,036		389
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	(1,327,280)		(1,808,860)
PROPERTY, PLANT AND EQUIPMENT - NET	0		0
GOODWILL	0		0
OTHER INTANGIBLE ASSETS - NET	0		0
DEFERRED INCOME TAXES	0
OTHER	0		0
TOTAL ASSETS	(1,321,244)		(1,808,471)
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	(1,321,244)		(1,808,471)
NONCONTROLLING INTERESTS	0		0
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	(1,321,244)		(1,808,471)
TransDigm Inc.
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	2,295,239		1,821,437
Trade accounts receivable - Net	0		0
Inventories - Net	52,727		45,262
Prepaid expenses and other	29,572		16,231
Total current assets	2,377,538		1,882,930
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	20,451,875		10,459,497
PROPERTY, PLANT AND EQUIPMENT - NET	18,615		15,562
GOODWILL	82,924		97,002
OTHER INTANGIBLE ASSETS - NET	25,670		31,362
DEFERRED INCOME TAXES	18,270
OTHER	9,619		104,633
TOTAL ASSETS	22,984,511		12,590,986
Current portion of long-term debt	75,656		75,817
Short-term borrowings - trade receivable securitization facility	0		0
Accounts payable	16,556		18,470
Accrued liabilities	252,767		118,600
Total current liabilities	344,979		212,887
LONG-TERM DEBT	15,905,437		12,011,166
DEFERRED INCOME TAXES	560,530		345,357
OTHER NON-CURRENT LIABILITIES	265,776		77,573
Total liabilities	17,076,722		12,646,983
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	5,907,789		(55,997)
NONCONTROLLING INTERESTS	0		0
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	22,984,511		12,590,986
TransDigm UK [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	280		125
Trade accounts receivable - Net	0		0
Inventories - Net	0		0
Prepaid expenses and other	0		0
Total current assets	280		125
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	974,678		1,099,886
PROPERTY, PLANT AND EQUIPMENT - NET	0		0
GOODWILL	0		0
OTHER INTANGIBLE ASSETS - NET	0		0
DEFERRED INCOME TAXES	0
OTHER	0		0
TOTAL ASSETS	974,958		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	4,297		13,274
Total current liabilities	4,297		13,274
LONG-TERM DEBT	491,023		490,780
DEFERRED INCOME TAXES	0		0
OTHER NON-CURRENT LIABILITIES	0		0
Total liabilities	495,320		504,054
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	479,638		595,957
NONCONTROLLING INTERESTS	0		0
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	974,958		1,100,011
Subsidiary Guarantors
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	(12,394)		(1,763)
Trade accounts receivable - Net	214,145		40,916
Inventories - Net	922,218		648,574
Prepaid expenses and other	44,549		47,020
Total current assets	1,168,518		734,747
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	11,087,173		8,928,726
PROPERTY, PLANT AND EQUIPMENT - NET	482,399		319,567
GOODWILL	6,453,835		5,466,148
OTHER INTANGIBLE ASSETS - NET	1,900,577		1,514,983
DEFERRED INCOME TAXES	7
OTHER	34,290		29,805
TOTAL ASSETS	21,126,799		16,993,976
Current portion of long-term debt	1,745		0
Short-term borrowings - trade receivable securitization facility	0		0
Accounts payable	166,610		115,735
Accrued liabilities	213,292		162,618
Total current liabilities	381,647		278,353
LONG-TERM DEBT	57,770		0
DEFERRED INCOME TAXES	19		(2,329)
OTHER NON-CURRENT LIABILITIES	152,382		104,829
Total liabilities	591,818		380,853
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	20,534,981		16,613,123
NONCONTROLLING INTERESTS	0		0
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	21,126,799		16,993,976
Non- Guarantor Subsidiaries
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	427,651		252,829
Trade accounts receivable - Net	948,200		663,394
Inventories - Net	453,696		115,913
Prepaid expenses and other	43,983		11,417
Total current assets	1,873,530		1,043,553
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	5,835,834		2,160,236
PROPERTY, PLANT AND EQUIPMENT - NET	244,524		53,204
GOODWILL	2,147,904		660,140
OTHER INTANGIBLE ASSETS - NET	807,767		242,059
DEFERRED INCOME TAXES	44,498
OTHER	20,504		5,715
TOTAL ASSETS	10,974,561		4,164,907
Current portion of long-term debt	3,462		0
Short-term borrowings - trade receivable securitization facility	299,951		299,519
Accounts payable	127,282		39,398
Accrued liabilities	219,022		56,951
Total current liabilities	649,717		395,868
LONG-TERM DEBT	41,655		0
DEFERRED INCOME TAXES	80,453		56,468
OTHER NON-CURRENT LIABILITIES	77,527		21,712
Total liabilities	849,352		474,048
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	10,114,579		3,690,859
NONCONTROLLING INTERESTS	10,630		0
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	$ 10,974,561		$ 4,164,907

SUPPLEMENTAL GUARANTOR INFORM_4

SUPPLEMENTAL GUARANTOR INFORMATION - Supplemental Condensed Consolidating Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Condensed Income Statements, Captions [Line Items]
NET SALES	$ 1,658,319	$ 980,662	$ 3,847,559	$ 2,761,692
COST OF SALES	896,845	411,142	1,862,648	1,181,448
GROSS PROFIT	761,474	569,520	1,984,911	1,580,244
SELLING AND ADMINISTRATIVE EXPENSES	274,557	112,816	561,307	326,208
AMORTIZATION OF INTANGIBLE ASSETS	41,889	19,224	84,986	53,793
(LOSS) INCOME FROM OPERATIONS	445,028	437,480	1,338,618	1,200,243
INTEREST EXPENSE - NET	241,292	167,577	614,701	489,776
REFINANCING COSTS	106	4,159	3,540	5,910
OTHER (INCOME) EXPENSE	(1,889)	203	(2,090)	865
EQUITY IN INCOME OF SUBSIDIARIES			0	0
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	205,519	265,541	722,467	703,692
INCOME TAX PROVISION	60,909	48,150	179,183	(27,550)
INCOME FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS	144,610	217,391	543,284	731,242
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(160)	0	(384)	0
NET INCOME INCLUDING NONCONTROLLING INTERESTS	144,450	217,391	542,900	731,242
LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX	0	(145)	0	(2,943)
NET INCOME ATTRIBUTABLE TO TD GROUP	144,450	217,246	542,900	728,299
OTHER COMPREHENSIVE (LOSS) INCOME, NET OF TAX	(18,738)	(30,236)	(179,875)	61,426
TOTAL COMPREHENSIVE INCOME (LOSS)	125,712	$ 187,010	363,025	789,725
Eliminations
Condensed Income Statements, Captions [Line Items]
NET SALES			(143,104)	(60,500)
COST OF SALES			(143,104)	(60,500)
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
OTHER (INCOME) EXPENSE			0	0
EQUITY IN INCOME OF SUBSIDIARIES			1,823,875	1,641,822
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES			(1,823,875)	(1,641,822)
INCOME TAX PROVISION			0	0
INCOME FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS			(1,823,875)	(1,641,822)
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS			0	0
LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX			0	0
NET INCOME ATTRIBUTABLE TO TD GROUP			(1,823,875)	(1,641,822)
OTHER COMPREHENSIVE (LOSS) INCOME, NET OF TAX			(61,132)	(59,910)
TOTAL COMPREHENSIVE INCOME (LOSS)			(1,885,007)	(1,701,732)
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
OTHER (INCOME) EXPENSE			0	0
EQUITY IN INCOME OF SUBSIDIARIES			(542,900)	(728,299)
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES			542,900	728,299
INCOME TAX PROVISION			0	0
INCOME FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS	$ 144,610		542,900	728,299
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS			0	0
LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX			0	0
NET INCOME ATTRIBUTABLE TO TD GROUP			542,900	728,299
OTHER COMPREHENSIVE (LOSS) INCOME, NET OF TAX			(179,875)	61,426
TOTAL COMPREHENSIVE INCOME (LOSS)			363,025	789,725
TransDigm Inc.
Condensed Income Statements, Captions [Line Items]
NET SALES			136,514	118,783
COST OF SALES			144,252	68,022
GROSS PROFIT			(7,738)	50,761
SELLING AND ADMINISTRATIVE EXPENSES			198,924	74,949
AMORTIZATION OF INTANGIBLE ASSETS			(7,047)	1,038
(LOSS) INCOME FROM OPERATIONS			(199,615)	(25,226)
INTEREST EXPENSE - NET			604,886	478,341
REFINANCING COSTS			3,272	5,839
OTHER (INCOME) EXPENSE			(69,698)	(241)
EQUITY IN INCOME OF SUBSIDIARIES			(1,280,975)	(913,523)
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES			542,900	404,358
INCOME TAX PROVISION			0	(323,941)
INCOME FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS			542,900	728,299
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS			0	0
LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX			0	0
NET INCOME ATTRIBUTABLE TO TD GROUP			542,900	728,299
OTHER COMPREHENSIVE (LOSS) INCOME, NET OF TAX			57,853	66,480
TOTAL COMPREHENSIVE INCOME (LOSS)			600,753	794,779
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			14	0
AMORTIZATION OF INTANGIBLE ASSETS			0	0
(LOSS) INCOME FROM OPERATIONS			(14)	0
INTEREST EXPENSE - NET			26,501	2,569
REFINANCING COSTS			268	71
OTHER (INCOME) EXPENSE			89,539	0
EQUITY IN INCOME OF SUBSIDIARIES			0	0
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES			(116,322)	(2,640)
INCOME TAX PROVISION			0	0
INCOME FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS			(116,322)	(2,640)
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS			0	0
LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX			0	0
NET INCOME ATTRIBUTABLE TO TD GROUP			(116,322)	(2,640)
OTHER COMPREHENSIVE (LOSS) INCOME, NET OF TAX			0	0
TOTAL COMPREHENSIVE INCOME (LOSS)			(116,322)	(2,640)
Subsidiary Guarantors
Condensed Income Statements, Captions [Line Items]
NET SALES			2,981,434	2,243,838
COST OF SALES			1,285,205	895,381
GROSS PROFIT			1,696,229	1,348,457
SELLING AND ADMINISTRATIVE EXPENSES			257,146	200,298
AMORTIZATION OF INTANGIBLE ASSETS			66,588	46,533
(LOSS) INCOME FROM OPERATIONS			1,372,495	1,101,626
INTEREST EXPENSE - NET			(6,605)	(4)
REFINANCING COSTS			0	0
OTHER (INCOME) EXPENSE			(593,642)	(1,646)
EQUITY IN INCOME OF SUBSIDIARIES			0	0
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES			1,972,742	1,103,276
INCOME TAX PROVISION			112,108	283,975
INCOME FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS			1,860,634	819,301
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS			0	0
LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX			0	(2,310)
NET INCOME ATTRIBUTABLE TO TD GROUP			1,860,634	816,991
OTHER COMPREHENSIVE (LOSS) INCOME, NET OF TAX			12,290	8,553
TOTAL COMPREHENSIVE INCOME (LOSS)			1,872,924	825,544
Non- Guarantor Subsidiaries
Condensed Income Statements, Captions [Line Items]
NET SALES			872,715	459,571
COST OF SALES			576,295	278,545
GROSS PROFIT			296,420	181,026
SELLING AND ADMINISTRATIVE EXPENSES			105,223	50,961
AMORTIZATION OF INTANGIBLE ASSETS			25,445	6,222
(LOSS) INCOME FROM OPERATIONS			165,752	123,843
INTEREST EXPENSE - NET			(10,081)	8,870
REFINANCING COSTS			0	0
OTHER (INCOME) EXPENSE			571,711	2,752
EQUITY IN INCOME OF SUBSIDIARIES			0	0
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES			(395,878)	112,221
INCOME TAX PROVISION			67,075	12,416
INCOME FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTERESTS			(462,953)	99,805
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS			(384)	0
LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX			0	(633)
NET INCOME ATTRIBUTABLE TO TD GROUP			(463,337)	99,172
OTHER COMPREHENSIVE (LOSS) INCOME, NET OF TAX			(9,011)	(15,123)
TOTAL COMPREHENSIVE INCOME (LOSS)			$ (472,348)	$ 84,049

SUPPLEMENTAL GUARANTOR INFORM_5

SUPPLEMENTAL GUARANTOR INFORMATION - Supplemental Condensed Consolidating Cash Flow Statement (Details) - USD ($)	9 Months Ended
	Jun. 29, 2019	Jun. 30, 2018
Condensed Cash Flow Statements, Captions [Line Items]
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	$ 768,356,000	$ 690,910,000
Capital expenditures	(80,421,000)	(50,097,000)
Payments made in connection with acquisitions, net of cash acquired	(3,956,944,000)	(582,262,000)
Proceeds in connection with the sale of discontinued operations	0	57,686,000
Net cash used in investing activities	(4,037,365,000)	(574,673,000)
Intercompany activities	0	0
Proceeds from exercise of stock options	64,279,000	40,621,000
Dividend equivalent payments	(24,309,000)	(56,148,000)
Proceeds from term loans, net	0	12,779,772,000
Repayments on term loans	(57,321,000)	(12,155,198,000)
Cash tender and redemption of 2020 Notes	(550,000,000)	0
Proceeds from senior subordinated notes due 2026, net	0	490,411,000
Proceeds from senior subordinated notes due 2027, net	544,462,000	0
Proceeds from senior secured notes due 2026, net	3,935,715,000	0
Financing fees and other	(1,186,000)	(9,904,000)
Net cash provided by (used in) financing activities	3,911,640,000	1,089,554,000
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	1,164,000	(2,979,000)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	643,795,000	1,202,812,000
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	2,073,017,000	650,561,000
CASH AND CASH EQUIVALENTS, END OF PERIOD	2,716,812,000	1,853,373,000
Cash and Cash Equivalents, Period Increase (Decrease)		1,202,812,000
Eliminations
Condensed Cash Flow Statements, Captions [Line Items]
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	9,859,000	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	(9,859,000)	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 2026, net		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 provided by (used in) financing activities	(9,859,000)	0
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	0	0
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	0
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	0	0
CASH AND CASH EQUIVALENTS, 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	(34,323,000)	14,035,000
Proceeds from exercise of stock options	64,279,000	40,621,000
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 2026, net		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 provided by (used in) financing activities	5,647,000	(1,492,000)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	0	0
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	5,647,000
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	389,000	2,416,000
CASH AND CASH EQUIVALENTS, END OF PERIOD	6,036,000	924,000
Cash and Cash Equivalents, Period Increase (Decrease)		(1,492,000)
TransDigm Inc.
Condensed Cash Flow Statements, Captions [Line Items]
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	(420,927,000)	(291,416,000)
Capital expenditures	(2,760,000)	(1,372,000)
Payments made in connection with acquisitions, net of cash acquired	(3,923,850,000)	(582,262,000)
Proceeds in connection with the sale of discontinued operations		57,686,000
Net cash used in investing activities	(3,926,610,000)	(525,948,000)
Intercompany activities	946,145,000	1,392,169,000
Proceeds from exercise of stock options	0	0
Dividend equivalent payments	0	0
Proceeds from term loans, net		12,779,772,000
Repayments on term loans	57,321,000	(12,155,198,000)
Cash tender and redemption of 2020 Notes	(550,000,000)
Proceeds from senior subordinated notes due 2026, net		0
Proceeds from senior subordinated notes due 2027, net	544,462,000
Proceeds from senior secured notes due 2026, net	3,935,715,000
Financing fees and other	2,338,000	(9,904,000)
Net cash provided by (used in) financing activities	4,821,339,000	2,006,839,000
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	0	0
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	473,802,000
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	1,821,437,000	439,473,000
CASH AND CASH EQUIVALENTS, END OF PERIOD	2,295,239,000	1,628,948,000
Cash and Cash Equivalents, Period Increase (Decrease)		1,189,475,000
TransDigm UK [Member]
Condensed Cash Flow Statements, Captions [Line Items]
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	(110,835,000)	2,110,000
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	112,012,000	(492,371,000)
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 2026, net		490,411,000
Proceeds from senior subordinated notes due 2027, net	0
Proceeds from senior secured notes due 2026, net	0
Financing fees and other	(1,022,000)	0
Net cash provided by (used in) financing activities	110,990,000	(1,960,000)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	0	0
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	155,000
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	125,000	0
CASH AND CASH EQUIVALENTS, END OF PERIOD	280,000	150,000
Cash and Cash Equivalents, Period Increase (Decrease)		150,000
Subsidiary Guarantors
Condensed Cash Flow Statements, Captions [Line Items]
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	1,951,008,000	863,173,000
Capital expenditures	(69,992,000)	(41,999,000)
Payments made in connection with acquisitions, net of cash acquired	(33,094,000)	0
Proceeds in connection with the sale of discontinued operations		0
Net cash used in investing activities	(103,086,000)	(41,999,000)
Intercompany activities	(1,858,553,000)	(820,946,000)
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 2026, net		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 provided by (used in) financing activities	(1,858,553,000)	(820,946,000)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	0	0
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(10,631,000)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	(1,763,000)	(203,000)
CASH AND CASH EQUIVALENTS, END OF PERIOD	(12,394,000)	25,000
Cash and Cash Equivalents, Period Increase (Decrease)		228,000
Non- Guarantor Subsidiaries
Condensed Cash Flow Statements, Captions [Line Items]
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	(660,749,000)	117,043,000
Capital expenditures	(7,669,000)	(6,726,000)
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	(7,669,000)	(6,726,000)
Intercompany activities	844,578,000	(92,887,000)
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 2026, net		0
Proceeds from senior subordinated notes due 2027, net	0
Proceeds from senior secured notes due 2026, net	0
Financing fees and other	(2,502,000)	0
Net cash provided by (used in) financing activities	842,076,000	(92,887,000)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	1,164,000	(2,979,000)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	174,822,000
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	252,829,000	208,875,000
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 427,651,000	223,326,000
Cash and Cash Equivalents, Period Increase (Decrease)		$ 14,451,000

SUPPLEMENTAL GUARANTOR INFORM_6

SUPPLEMENTAL GUARANTOR INFORMATION Narrative (Details)	Jun. 29, 2019
Condensed Financial Statements, Captions [Line Items]
Percentage of ownership in subsidiary	100.00%

SUBSEQUENT EVENTS (Details)

SUBSEQUENT EVENTS (Details) - USD ($) $ / shares in Units, $ in Thousands	Aug. 07, 2019	Jul. 21, 2019	Aug. 06, 2019	Jul. 30, 2019	Jun. 29, 2019	Sep. 30, 2018
Subsequent Event [Line Items]
Interest Payable, Current					$ 191,700	$ 96,600
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends Payable, Amount Per Share			$ 30
Dividends Payable, Current			$ 1,700,000
Asset-backed Securities | Subsequent Event [Member]
Subsequent Event [Line Items]
Short-term borrowings—trade receivable securitization facility, Gross				$ 350,000
Souriau Sunbank [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Divestiture, Sale Price		$ 920,000
Esterline Interface Technology Group [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Divestiture, Sale Price	$ 190,000
Asset-backed Securities
Subsequent Event [Line Items]
Short-term borrowings—trade receivable securitization facility, Gross					300,000	$ 300,000
Unused capacity [Member] | Asset-backed Securities
Subsequent Event [Line Items]
Short-term borrowings—trade receivable securitization facility, Gross					$ 50,000