10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

for the quarterly period ended December 28, 2019

☐ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from             to            

Commission File Number 001-32833

TransDigm Group Incorporated

(Exact name of registrant as specified in its charter)

Delaware

(State or other jurisdiction of incorporation or organization)

41-2101738

(I.R.S. Employer Identification No.)

1301 East 9th Street,	Suite 3000,	Cleveland,	Ohio	44114
(Address of principal executive offices)				(Zip Code)

(216) 706-2960

(Registrant’s telephone number, including area code)

(Former name, former address and former fiscal year, if changed since last report.)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ☒    No  ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  ☒    No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, accelerated filer, non-accelerated filer, smaller reporting company or emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large Accelerated Filer	☒	Accelerated Filer	☐
Non-Accelerated Filer	☐	Smaller Reporting Company	☐
Emerging Growth Company	☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.			☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ☐    No  ☒

Securities registered pursuant to Section 12(b) of the Act:
Title of each class:	Trading Symbol:	Name of each exchange on which registered:
Common Stock, $0.01 par value	TDG	New York Stock Exchange

The number of shares outstanding of TransDigm Group Incorporated’s common stock, par value $.01 per share, was 53,667,940 as of January 26, 2020.

INDEX

			Page
Part I		FINANCIAL INFORMATION
	Item 1	Financial Statements
		Condensed Consolidated Balance Sheets – December 28, 2019 and September 30, 2019	1
		Condensed Consolidated Statements of Income – Thirteen Week Periods Ended December 28, 2019 and December 29, 2018	2
		Condensed Consolidated Statements of Comprehensive Income – Thirteen Week Periods Ended December 28, 2019 and December 29, 2018	3
		Condensed Consolidated Statements of Changes in Stockholders’ Deficit – Thirteen Week Periods Ended December 28, 2019 and December 29, 2018	4
		Condensed Consolidated Statements of Cash Flows – Thirteen Week Periods Ended December 28, 2019 and December 29, 2018	5
		Notes to Condensed Consolidated Financial Statements	6
	Item 2	Management’s Discussion and Analysis of Financial Condition and Results of Operations	31
	Item 3	Quantitative and Qualitative Disclosure About Market Risk	44
	Item 4	Controls and Procedures	44
Part II		OTHER INFORMATION	45
	Item 1	Legal Proceedings	45
	Item 1A	Risk Factors	45
	Item 2	Unregistered Sales of Equity Securities and Use of Proceeds	45
	Item 6	Exhibits	46
SIGNATURES			47

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATED BALANCE SHEETS

(Amounts in millions, except share amounts)

(Unaudited)

	December 28, 2019			September 30, 2019
ASSETS
CURRENT ASSETS:
Cash and cash equivalents	$	4,194		$	1,467
Trade accounts receivable—Net	1,025			1,068
Inventories—Net	1,294			1,233
Assets held-for-sale	—			962
Prepaid expenses and other	139			135
Total current assets	6,652			4,865
PROPERTY, PLANT AND EQUIPMENT—NET	753			757
GOODWILL	7,846			7,820
OTHER INTANGIBLE ASSETS—NET	2,737			2,744
DEFERRED INCOME TAXES	13			—
OTHER	155			69
TOTAL ASSETS	$	18,156		$	16,255
LIABILITIES AND STOCKHOLDERS’ DEFICIT
CURRENT LIABILITIES:
Current portion of long-term debt	$	80		$	80
Short-term borrowings—trade receivable securitization facility	350			350
Accounts payable	265			276
Accrued liabilities	2,655			675
Liabilities held-for-sale	—			157
Total current liabilities	3,350			1,538
LONG-TERM DEBT	17,952			16,469
DEFERRED INCOME TAXES	448			441
OTHER NON-CURRENT LIABILITIES	705			691
Total liabilities	22,455			19,139
TD GROUP STOCKHOLDERS’ DEFICIT:
Common stock - $.01 par value; authorized 224,400,000 shares; issued 57,792,781 and 57,623,311 at December 28, 2019 and September 30, 2019, respectively	1			1
Additional paid-in capital	1,422			1,379
Accumulated deficit	(4,699		)	(3,120		)
Accumulated other comprehensive loss	(252		)	(379		)
Treasury stock, at cost; 4,161,326 shares at December 28, 2019 and September 30, 2019, respectively	(775		)	(775		)
Total TD Group stockholders’ deficit	(4,303		)	(2,894		)
NONCONTROLLING INTERESTS	4			10
Total stockholders' deficit	(4,299		)	(2,884		)
TOTAL LIABILITIES AND STOCKHOLDERS’ DEFICIT	$	18,156		$	16,255

See Notes to Condensed Consolidated Financial Statements.

1

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

(Amounts in millions, except per share amounts)

(Unaudited) 

	Thirteen Week Periods Ended
	December 28, 2019			December 29, 2018
NET SALES	$	1,465		$	993
COST OF SALES	664			429
GROSS PROFIT	801			564
SELLING AND ADMINISTRATIVE EXPENSES	201			122
AMORTIZATION OF INTANGIBLE ASSETS	40			20
INCOME FROM OPERATIONS	560			422
INTEREST EXPENSE - NET	248			172
REFINANCING COSTS	22			—
OTHER INCOME	(3		)	—
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	293			250
INCOME TAX PROVISION	59			54
INCOME FROM CONTINUING OPERATIONS	234			196
INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX	71			—
NET INCOME	305			196
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(1		)	—
NET INCOME ATTRIBUTABLE TO TD GROUP	$	304		$	196
NET INCOME APPLICABLE TO TD GROUP COMMON STOCKHOLDERS	$	119		$	172
Earnings per share attributable to TD Group common stockholders:
Earnings per share from continuing operations - basic and diluted	$	0.83		$	3.05
Earnings per share from discontinued operations - basic and diluted	1.24			—
Earnings per share	$	2.07		$	3.05
Cash dividends declared per common share	$	32.50		$	—
Weighted-average shares outstanding:
Basic and diluted	57.4			56.3

See Notes to Condensed Consolidated Financial Statements.

2

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Amounts in millions)

(Unaudited)

	Thirteen Week Periods Ended
	December 28, 2019			December 29, 2018
Net income	$	305		$	196
Less: Net income attributable to noncontrolling interests	(1		)	—
Net income attributable to TD Group	$	304		$	196
Other comprehensive income (loss), net of tax:
Foreign currency translation	98			(11		)
Unrealized gain (loss) on derivatives	23			(74		)
Pensions and other postretirement benefits	6			—
Other comprehensive income (loss), net of tax, attributable to TD Group	127			(85		)
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO TD GROUP	$	431		$	111

See Notes to Condensed Consolidated Financial Statements.

3

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ DEFICIT

(Amounts in millions, except share amounts)

(Unaudited)

	TD Group Stockholders
	Common Stock			Additional Paid-In Capital					Accumulated Other Comprehensive Income (Loss)			Treasury Stock
	Number of Shares	Par Value				Accumulated Deficit						Number of Shares		Value			Non-controlling Interests		Total
BALANCE, SEPTEMBER 30, 2018	56,895,686	$	1	$	1,209	$	(2,247	)	$	4		(4,161,326	)	$	(775	)	$	—	$	(1,808	)
Cumulative effect of ASC 606 and ASU 2016-16, adopted October 1, 2018	—	—		—		3			—			—		—			—		3
Accrued unvested dividend equivalents and other	—	—		—		(3		)	—			—		—			—		(3		)
Compensation expense recognized for employee stock options	—	—		16		—			—			—		—			—		16
Exercise of employee stock options	109,695	—		14		—			—			—		—			—		14
Net income attributable to TD Group	—	—		—		196			—			—		—			—		196
Foreign currency translation adjustments, net of tax	—	—		—		—			(11		)	—		—			—		(11		)
Unrealized (loss) gain on derivatives, net of tax	—	—		—		—			(74		)	—		—			—		(74		)
BALANCE, DECEMBER 29, 2018	57,005,381	$	1	$	1,239	$	(2,051	)	$	(81	)	(4,161,326	)	$	(775	)	$	—	$	(1,667	)

	TD Group Stockholders
	Common Stock			Additional Paid-In Capital					Accumulated Other Comprehensive (Loss) Income			Treasury Stock
	Number of Shares	Par Value				Accumulated Deficit						Number of Shares		Value			Non-controlling Interests			Total
BALANCE, SEPTEMBER 30, 2019	57,623,311	$	1	$	1,379	$	(3,120	)	$	(379	)	(4,161,326	)	$	(775	)	$	10		$	(2,884	)
Noncontrolling interests attributable to divestiture	—	—		—		—			—			—		—			(6		)	(6		)
Special dividends and vested dividend equivalents declared	—	—		—		(1,864		)	—			—		—			—			(1,864		)
Accrued unvested dividend equivalents and other	—	—		—		(19		)	—			—		—			—			(19		)
Compensation expense recognized for employee stock options	—	—		23		—			—			—		—			—			23
Exercise of employee stock options	169,470	—		20		—			—			—		—			—			20
Net income attributable to TD Group	—	—		—		304			—			—		—			—			304
Foreign currency translation adjustments, net of tax	—	—		—		—			98			—		—			—			98
Unrealized (loss) gain on derivatives, net of tax	—	—		—		—			23			—		—			—			23
Pensions and other postretirement benefits adjustments, net of tax	—	—		—		—			6			—		—			—			6
BALANCE, DECEMBER 28, 2019	57,792,781	$	1	$	1,422	$	(4,699	)	$	(252	)	(4,161,326	)	$	(775	)	$	4		$	(4,299	)

See Notes to Condensed Consolidated Financial Statements.

4

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Amounts in millions)

(Unaudited)

	Thirteen Week Periods Ended
	December 28, 2019			December 29, 2018
OPERATING ACTIVITIES:
Net income	$	305		$	196
Net income from discontinued operations	(71		)	—
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	29			15
Amortization of intangible assets	40			20
Amortization of debt issuance costs, original issue discount and premium	8			6
Amortization of inventory step-up	—			4
Amortization of loss contract reserves	(11		)	(2		)
Refinancing costs	22			—
Non-cash equity compensation	26			18
Deferred income taxes	(2		)	—
Changes in assets/liabilities, net of effects from acquisitions of businesses:
Trade accounts receivable	51			45
Inventories	(69		)	(29		)
Income taxes receivable/payable	30			52
Other assets	(5		)	(9		)
Accounts payable	(14		)	3
Accrued interest	88			21
Accrued and other liabilities	6			(10		)
Net cash provided by operating activities	433			330
INVESTING ACTIVITIES:
Capital expenditures	(27		)	(24		)
Payments made in connection with acquisitions, net of cash acquired	—			(29		)
Proceeds in connection with the sale of discontinued operations, net	904			—
Net cash provided by (used in) investing activities	877			(53		)
FINANCING ACTIVITIES:
Proceeds from exercise of stock options	20			14
Dividend equivalent payments	(64		)	(24		)
Redemption of senior subordinated notes due 2022, net	(1,168		)	—
Proceeds from 5.50% senior subordinated notes due 2027, net	2,625			—
Other, net	1			—
Net cash provided by (used in) financing activities	1,414			(10		)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	3			(3		)
NET INCREASE IN CASH AND CASH EQUIVALENTS	2,727			264
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	1,467			2,073
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	4,194		$	2,337
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid during the period for interest	$	155		$	154
Cash paid during the period for income taxes, net of refunds	$	29		$	2

See Notes to Condensed Consolidated Financial Statements.

5

TRANSDIGM GROUP INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

THIRTEEN WEEK PERIODS ENDED DECEMBER 28, 2019 AND DECEMBER 29, 2018

(UNAUDITED)

1.    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.

2.    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, 2019 included in TD Group’s Form 10-K filed on November 19, 2019. As disclosed therein, the Company’s annual consolidated financial statements were prepared in conformity with generally accepted accounting principles in the United States (“US GAAP”). The September 30, 2019 condensed consolidated balance sheet was derived from TD Group’s audited financial statements. The results of operations for the thirteen week period ended December 28, 2019 are not necessarily indicative of the results to be expected for the full year.

Certain prior year amounts have been reclassified to conform to the current year presentation.

3.    ACQUISITIONS AND DIVESTITURES

During the fiscal year ended September 30, 2019, the Company completed the acquisitions of Esterline Technologies Corporation ("Esterline") and substantially all of the assets and technical data rights of the Stormscope product line from L3Harris Technologies, Inc. ("Stormscope") and NavCom Defense Electronics ("NavCom"). 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 December 28, 2019, the one year measurement period is open for Esterline and Stormscope; 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 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.

6

Acquisitions

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, was an industry leader in specialized manufacturing for the aerospace and defense industry 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 complexity of the Esterline acquisition, the allocation of the purchase price is preliminary and will be finalized by the end of the one year measurement period permissible under US GAAP.

Except where otherwise noted in the notes to the 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 as of the acquisition date of March 14, 2019 is summarized in the table below (presented in millions).

Assets acquired:
Trade accounts receivable	$	387
Inventories	589
Prepaid expenses and other	422
Property, plant, and equipment	469
Other intangible assets	1,300
Goodwill	2,190
Other	22
Total assets acquired	5,379
Liabilities assumed:
Accounts payable	146
Accrued liabilities	715
Other non-current liabilities	594
Total liabilities assumed	1,455
Net assets acquired	$	3,924

The Company currently expects that of the approximately $2.2 billion of goodwill recognized for the acquisition, approximately $25.6 million will be deductible for tax purposes. Also, of the approximately $1.3 billion of other intangible assets recognized for the acquisition, the Company currently expects that approximately $48.9 million will be deductible for tax purposes.

In connection with the Esterline acquisition, we acquired existing long-term contracts with customers that were incurring gross margin losses as of the date of acquisition. Based on our review of these contracts, we concluded that the terms of certain contracts were unfavorable when compared to market terms as of the acquisition date. As a result, we recognized loss contract reserves as of the acquisition date of $268.4 million based on the present value of the difference between the contractual cash flows of the existing long-term contracts and the estimated cash flows had the contracts been executed at market terms as of the acquisition date. As of September 30, 2019, we reclassified $9.3 million in loss contract reserves to liabilities held-for-sale, as it pertained to Souriau-Sunbank. Significant assumptions used to determine the fair value of the loss contract reserves using the discounted cash flow model include discount rates, forecasted quantities of products to be sold under the long-term contracts and market prices for respective products. These significant assumptions are

7

forward looking and could be affected by future economic and market conditions. The loss contract reserves are amortized and recorded as an offset to cost of sales over the life of the contracts as actual sales occur under the long-term contracts. Approximately $9.1 million was amortized and recorded as an offset to cost of sales in the condensed consolidated statement of income for the thirteen week period ended December 28, 2019. Total loss contract reserves related to the Esterline acquisition are $222.5 million and $231.8 million at December 28, 2019 and September 30, 2019, respectively, of which $71.9 million and $60.0 million is classified in accrued liabilities and $150.6 million and $171.8 million is classified in other non-current liabilities in the condensed consolidated balance sheets at December 28, 2019 and September 30, 2019, respectively.

Extant Acquisitions – On August 30, 2019, the Company's Extant subsidiary completed the acquisition of substantially all of the assets and technical data rights of the Stormscope product line from L3Harris Technologies, Inc. for approximately $20 million in cash. Stormscope is a lightning detection system for the general aviation and business jet markets. Stormscope is included as a product line of Extant, which is included in TransDigm's Power and Control segment. The Company expects that approximately $11.1 million of goodwill recognized for the acquisition and approximately $7.5 million of other intangible assets recognized for the acquisition will be deductible for tax purposes over 15 years.

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. Approximately $9.0 million of goodwill recognized for the acquisition is deductible for tax purposes over 15 years.

Pro forma net sales and results of operations for the Extant acquisitions had they occurred at the beginning of the applicable thirteen week periods ended December 28, 2019 or December 29, 2018 are not material and, accordingly, are not provided.

Divestitures

Souriau-Sunbank – On December 20, 2019, TransDigm completed the divestiture of the Souriau-Sunbank Connection Technologies business (“Souriau-Sunbank”) with Eaton Corporation plc (“Eaton”) for approximately $920 million. Souriau-Sunbank was acquired by TransDigm as part of its acquisition of Esterline in March 2019.

Esterline Interface Technology Group – On September 20, 2019, TransDigm completed the divestiture of its Esterline Interface Technology (“EIT”) group of businesses to an affiliate of KPS Capital Partners, LP for approximately $190 million. EIT was acquired by TransDigm as part of its acquisition of Esterline in March 2019.

Refer to Note 18, "Discontinued Operations," for further information on the Company's divestitures.

4.    RECENT ACCOUNTING PRONOUNCEMENTS

In February 2016, the FASB issued ASU 2016-02, “Leases (ASC 842),” which requires lessees to recognize a right-of-use asset and lease liability for all leases with a term of more than 12 months. ASU 2016-02 was effective for the Company on October 1, 2019, and required a modified retrospective application. In July 2018, the FASB issued ASU 2018-11, “Leases (ASC 842) Targeted Improvements,” which provided an additional transition method that allowed entities to initially apply the new standard at the adoption date and recognize a cumulative effect adjustment to the opening balance of retained earnings in the period of adoption without restating prior periods. The Company has completed the necessary changes to the consolidated financial statements and related disclosures, internal controls, financial policies and information systems. On October 1, 2019, the Company adopted ASC 842 and related amendments using the modified retrospective method. Results for reporting periods beginning after October 1, 2019, are presented under ASC 842, while prior period amounts continue to be reported under ASC 840, “Leases." The Company elected to apply the package of practical expedients permitted within the new standard, which among other things, allows the carry forward of historical lease classification of existing leases. Additionally, the adoption of the new standard resulted in the recording of lease assets and lease liabilities for operating leases of $99 million and $105 million, respectively, as of October 1, 2019. The effects of our transition to ASC 842 resulted in no cumulative adjustment to retained earnings in the period of adoption. The adoption of the standard did not have a material impact on our condensed consolidated statements of income or cash flows. Refer to Note 16, "Leases," for additional information.

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.

8

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 December 2019, the FASB issued ASU 2019-12, “Income Taxes (ASC 740) - Simplifying the Accounting for Income Taxes,” which simplifies the accounting for income taxes by removing certain exceptions to the general principles in ASC 740. The amendments also improve consistent application of and simplify US GAAP for other areas of ASC 740 by clarifying and amending existing guidance. This guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. Early adoption of the amendments is permitted, including adoption in any interim period for which financial statements have not yet been issued. Depending on the amendment, adoption may be applied on the retrospective, modified retrospective or prospective basis. The Company is currently evaluating the impact of adopting this standard on our consolidated financial statements and disclosures.

5.    REVENUE RECOGNITION

TransDigm's sales are concentrated in the aerospace industry. The Company’s customers include: distributors of aerospace components, commercial airlines, large commercial transport and regional and business aircraft OEMs, various armed forces of the United States and friendly foreign governments, defense OEMs, system suppliers, and various other industrial customers.

The majority of the Company's revenue is recorded at a point in time. 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.

In some contracts, the Company found that 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. Therefore, we recognize revenue over time for those agreements that have a right to margin and where the products being produced have no alternative use. 

Based on our production cycle, it is generally expected that goods related to the revenue 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.

Shipping and handling fees and costs incurred in connection with products sold are recorded in cost of sales in the condensed 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 statements of income.

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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 millions):

	December 28, 2019		September 30, 2019		Change
Contract assets, current (1)	$	43	$	44	$	(1	)
Contract assets, non-current (2)	6		7		(1		)
Total contract assets	49		51		(2		)
Contract liabilities, current (3)	18		18		—
Contract liabilities, non-current (4)	16		13		3
Total contract liabilities	34		31		3
Net contract assets	$	15	$	20	$	(5	)

⁽¹⁾  Included in prepaid expenses and other on the condensed consolidated balance sheets.

⁽²⁾  Included in other non-current assets 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.

For the thirteen week period ended December 28, 2019, the revenue recognized that was previously included in contract liabilities was not material.

Refer to Note 13, “Segments,” for disclosures related to the disaggregation of revenue.

6.    EARNINGS PER SHARE

The following table sets forth the computation of basic and diluted earnings per share (in millions, except per share data) using the two-class method:

	Thirteen Week Periods Ended
	December 28, 2019			December 29, 2018
Numerator for earnings per share:
Income from continuing operations	$	234		$	196
Less: Net income attributable to noncontrolling interests	(1		)	—
Net income from continuing operations attributable to TD Group	233			196
Less: Special dividends declared or paid on participating securities	(185		)	(24		)
	48			172
Income from discontinued operations, net of tax	71			—
Net income applicable to TD Group common stockholders - basic and diluted	$	119		$	172
Denominator for basic and diluted earnings per share under the two-class method:
Weighted-average common shares outstanding	53.6			52.8
Vested options deemed participating securities	3.8			3.5
Total shares for basic and diluted earnings per share	57.4			56.3
Earnings per share from continuing operations - basic and diluted	$	0.83		$	3.05
Earnings per share from discontinued operations - basic and diluted	1.24			—
Earnings per share	$	2.07		$	3.05

7. 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 millions):

	December 28, 2019			September 30, 2019
Raw materials and purchased component parts	$	858		$	805
Work-in-progress	373			360
Finished goods	197			192
Total	1,428			1,357
Reserves for excess and obsolete inventory	(134		)	(124		)
Inventories - Net	$	1,294		$	1,233

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8.    INTANGIBLE ASSETS

Other intangible assets - net in the condensed consolidated balance sheets consist of the following (in millions):

	December 28, 2019						September 30, 2019
	Gross Carrying Amount		Accumulated Amortization		Net		Gross Carrying Amount		Accumulated Amortization		Net
Trademarks and trade names	$	957	$	—	$	957	$	956	$	—	$	956
Technology	1,840		519		1,321		1,806		496		1,310
Order backlog	93		51		42		107		45		62
Customer relationships	443		35		408		438		30		408
Other	18		9		9		17		9		8
Total	$	3,351	$	614	$	2,737	$	3,324	$	580	$	2,744

The aggregate amortization expense on identifiable intangible assets for the thirteen week periods ended December 28, 2019 and December 29, 2018 was approximately $39.9 million and $20.0 million, respectively. The estimated amortization expense is $171.9 million for fiscal year 2020, $115.2 million for fiscal year 2021, and $114.7 million for each of the four succeeding fiscal years 2022 through 2025.

The following is a summary of changes in the carrying value of goodwill by segment from September 30, 2019 through December 28, 2019 (in millions):

	Power & Control			Airframe		Non- aviation			Total
Balance at September 30, 2019	$	4,121		$	3,598	$	101		$	7,820
Purchase price allocation adjustments	(106		)	106		(3		)	(3		)
Currency translation adjustment	12			16		1			29
Balance at December 28, 2019	$	4,027		$	3,720	$	99		$	7,846

9.    DEBT

The Company’s debt consists of the following (in millions):

	December 28, 2019
	Gross Amount		Debt Issuance Costs			Original Issue Discount or Premium			Net Amount
Short-term borrowings—trade receivable securitization facility	$	350	$	—		$	—		$	350
Term loans	$	7,524	$	(56	)	$	(16	)	$	7,452
6.50% senior subordinated notes due 2024 (2024 Notes)	1,200		(5		)	—			1,195
6.50% senior subordinated notes due 2025 (2025 Notes)	750		(3		)	3			750
6.375% senior subordinated notes due 2026 (6.375% 2026 Notes)	950		(7		)	—			943
6.875% senior subordinated notes due 2026 (6.875% 2026 Notes)	500		(5		)	(3		)	492
6.25% secured notes due 2026 (2026 Secured Notes)	4,000		(57		)	2			3,945
7.50% senior subordinated notes due 2027 (7.50% 2027 Notes)	550		(5		)	—			545
5.50% senior subordinated notes due 2027 (5.50% 2027 notes	2,650		(23		)	—			2,627
Government refundable advances	31		—			—			31
Finance lease obligations	52		—			—			52
	18,207		(161		)	(14		)	18,032
Less current portion	81		(1		)	—			80
Long-term debt	$	18,126	$	(160	)	$	(14	)	$	17,952

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	September 30, 2019
	Gross Amount		Debt Issuance Costs			Original Issue Discount or Premium			Net Amount
Short-term borrowings—trade receivable securitization facility	$	350	$	—		$	—		$	350
Term loans	$	7,524	$	(58	)	$	(17	)	$	7,449
6.00% 2022 Notes	1,150		(4		)	—			1,146
6.50% 2024 Notes	1,200		(6		)	—			1,194
6.50% 2025 Notes	750		(3		)	3			750
6.375% 2026 Notes	950		(7		)	—			943
6.875% 2026 Notes	500		(6		)	(3		)	491
6.25% 2026 Secured Notes	4,000		(60		)	2			3,942
7.50% 2027 Notes	550		(5		)	—			545
Government refundable advances	39		—			—			39
Finance lease obligations	50		—			—			50
	16,713		(149		)	(15		)	16,549
Less current portion	81		(1		)	—			80
Long-term debt	$	16,632	$	(148	)	$	(15	)	$	16,469

Accrued interest, which is classified as a component of accrued liabilities, was $181.0 million and $92.6 million as of December 28, 2019 and September 30, 2019, respectively.

Issuance of Senior Subordinated Notes due 2027 – On October 29, 2019, the Company entered into a purchase agreement in connection with a private offering of $2,650 million in new 5.50% senior subordinated notes due 2027 (herein the "5.50% 2027 Notes"). The 5.50% 2027 Notes were issued pursuant to an indenture, dated as of November 13, 2019, among TransDigm, as issuer, TransDigm Group, TransDigm 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 5.50% 2027 Notes bear interest at the rate of 5.50% per annum, which accrues from November 13, 2019 and is payable in arrears on May 15th and November 15th of each year, commencing on May 15, 2020. The 5.50% 2027 Notes mature on November 15, 2027, unless earlier redeemed or repurchased, and are subject to the terms and conditions set forth in the indenture.

The Company capitalized $23.6 million and expensed $1.1 million of refinancing costs representing debt issuance costs associated with the 5.50% 2027 Notes during the thirteen week period ended December 28, 2019.

Repurchase of Senior Subordinated Notes due 2022 – On October 29, 2019, the Company announced a cash tender offer for any and all of its 2022 Notes outstanding. On November 26, 2019, the Company redeemed the principal amount of $1,150 million, plus accrued interest of approximately $25.5 million and early redemption premium of $17.3 million.

The Company wrote off $3.8 million in unamortized debt issuance costs during the thirteen week period ended December 28, 2019 in conjunction with the redemption of the 2022 Notes.

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 Electronics, which is a subsidiary of TransDigm. These obligations were assumed in connection with the Esterline acquisition and the balance was $31.3 million at December 28, 2019 and $39.2 million at September 30, 2019. The decrease in the obligation is attributable to a purchase accounting adjustment recorded in the first quarter of fiscal 2020 as permissible within the one year measurement period related to the acquisition of Esterline.

Obligations under Finance Leases - The Company leases certain buildings and equipment under finance 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 $51.9 million at December 28, 2019 and $49.9 million at September 30, 2019. Refer to Note 16, "Leases," for further disclosure on the Company's finance lease obligations.

10.    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 December 28, 2019 and December 29, 2018, the effective income tax rate was 20.1% and 21.5%, respectively. The Company's lower

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effective tax rate for the thirteen week period ended December 28, 2019 was primarily due to a discrete benefit recognized for excess tax benefits for share-based payments during the thirteen week period ended December 28, 2019, partially offset by an increase in the valuation allowance associated with our net interest expense limitation under IRC Section 163(j). The Company's effective tax rate for the thirteen week period ended December 28, 2019 was lower than the Federal statutory rate of 21% primarily due to the discrete benefit recognized for excess tax benefits for share-based payments and the benefit associated with the deduction for foreign-derived intangible income (FDII), partially offset by the increase in the valuation allowance attributed to our net interest expense limitation under IRC Section 163(j), and our foreign earnings taxed at rates higher than the U.S. statutory rate. The Company’s effective tax rate for the thirteen week period ended December 29, 2018 was slightly higher than the Federal statutory tax rate primarily resulting from the valuation allowance associated with our net interest expense limitation under IRC Section 163(j), foreign earnings taxed at rates higher than the U.S. statutory rate, partially offset by the benefit associated with FDII.

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 examination for its federal income taxes in the U.S. for fiscal 2016, in Belgium for fiscal years 2016 through 2018, in Canada for fiscal years 2013 through 2015, in France for fiscal years 2015 through 2018, and in Germany for fiscal years 2014 through 2017. The Company is no longer subject to U.S. federal examinations for years before fiscal year 2015. The Company is subject to state income tax examinations for fiscal years 2009 and later.

At December 28, 2019 and September 30, 2019, TD Group had $36.6 million and $36.5 million, respectively, in unrecognized tax benefits, the recognition of which would have an effect of approximately $31.9 million and $31.4 million on the effective tax rate at December 28, 2019 and September 30, 2019, respectively. The Company believes the tax positions that comprise the unrecognized tax benefits will be reduced by approximately $1.5 million over the next 12 months. The Company recognizes accrued interest and penalties related to unrecognized tax benefits as a component of income tax expense.

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11.    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 millions):

		December 28, 2019				September 30, 2019
	Level	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Cash and cash equivalents	1	$	4,194	$	4,194	$	1,467	$	1,467
Interest rate cap agreements (1)	2	1		1		1		1
Foreign currency forward exchange contracts and other (2)	2	1		1		—		—
Liabilities:
Interest rate swap agreements (3)	2	14		14		13		13
Interest rate swap agreements (4)	2	169		169		202		202
Foreign currency forward exchange contracts and other (3)	2	4		4		6		6
Short-term borrowings - trade receivable securitization facility (5)	1	350		350		350		350
Long-term debt, including current portion:
Term loans (5)	2	7,452		7,509		7,449		7,478
6.00% 2022 Notes (5)	1	—		—		1,146		1,167
6.50% 2024 Notes (5)	1	1,195		1,236		1,194		1,239
6.50% 2025 Notes (5)	1	750		781		750		782
6.375% 2026 Notes (5)	1	943		1,007		943		999
6.875% 2026 Notes (5)	1	492		536		491		535
6.25% 2026 Notes (5)	1	3,945		4,325		3,942		4,290
7.50% 2027 Notes (5)	1	545		601		545		595
5.50% 2027 Notes (5)	1	2,627		2,686		—		—
Government Refundable Advances	2	31		31		39		39
Finance Lease Obligations	2	52		52		50		50

⁽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.

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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 December 28, 2019 and September 30, 2019.

12.    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 US 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 income (loss) 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.

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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 (in millions)	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 (in millions).

	December 28, 2019					September 30, 2019
	Asset		Liability			Asset		Liability
Interest rate cap agreements	$	1	$	—		$	1	$	—
Interest rate swap agreements (1)	—		(183		)	—		(216		)
Net derivatives as classified in the balance sheet (2)	$	1	$	(183	)	$	1	$	(216	)

⁽¹⁾  The decrease in the interest rate swap liability is primarily attributable to a upward trend in the LIBO rate during the first quarter of fiscal 2020.

⁽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 December 28, 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 $17.0 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 income (loss) in stockholder’s deficit amortized into interest expense was $5.0 million and $1.1 million for the thirteen week periods ended December 28, 2019 and December 29, 2018, respectively. The accumulated other comprehensive income to be reclassified into interest expense over the remaining term of the cap agreements is $4.8 million with a related tax benefit of $1.1 million as of December 28, 2019.

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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 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 income (loss) in stockholder’s deficit amortized into interest expense was $1.1 million and $0.3 million for the thirteen week periods ended December 28, 2019 and December 29, 2018. The accumulated other comprehensive income to be reclassified into interest income over the remaining term of the swaps agreements is $2.0 million with a related tax expense of $0.5 million as of December 28, 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 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 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 income (loss) in stockholder’s deficit amortized into interest income was $2.8 million and $0.7 million for the thirteen week periods ended December 28, 2019 and December 29, 2018. The accumulated other comprehensive income to be reclassified into interest income over the remaining term of the swaps agreements is $7.9 million with a related tax expense of $1.9 million as of December 28, 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 December 28, 2019, the Company had outstanding foreign currency forward exchange contracts principally to sell U.S. dollars with notional amounts of $191.9 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 thirteen week period ended December 28, 2019, the the Company recognized gains on foreign currency forward exchange contracts designated as fair value hedges of $0.2 million in cost of sales in the condensed consolidated statement of income. During the thirteen week period ended December 28, 2019, the gains the Company reclassified on foreign currency forward exchange contracts designated as cash flow hedges in the condensed consolidated income statement are immaterial. The gains (losses) were previously recorded as a component of accumulated other comprehensive income (loss) in stockholders' deficit.

During the thirteen week period ended December 28, 2019, the Company recorded a loss of $0.4 million on foreign currency forward exchange contracts that have not been designated as accounting hedges. These foreign currency exchange losses 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 thirteen week period ended December 28, 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 thirteen week period ended December 28, 2019.

Amounts related to foreign currency forward exchange contracts included in accumulated other comprehensive income (loss) in stockholders' deficit are reclassified into earnings when the hedged transaction settles. The Company expects to reclassify approximately $3.0 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 December 28, 2019 was 24 months.

13.    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

17

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 headsets for high-noise, medium-noise, and dismounted applications, 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 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 US 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 US 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.

18

The following table presents net sales by reportable segment (in millions):

	Thirteen Week Periods Ended
	December 28, 2019		December 29, 2018
Net sales to external customers
Power & Control
Commercial OEM	$	184	$	133
Commercial Aftermarket	220		157
Defense	348		270
Total Power & Control	752		560
Airframe
Commercial OEM	230		133
Commercial Aftermarket	245		177
Defense	199		89
Total Airframe	674		399
Total Non-aviation	39		34
	$	1,465	$	993

The following table reconciles EBITDA As Defined by segment to consolidated income from continuing operations before income taxes (in millions):

	Thirteen Week Periods Ended
	December 28, 2019		December 29, 2018
EBITDA As Defined
Power & Control	$	385	$	300
Airframe	305		191
Non-aviation	13		11
Total segment EBITDA As Defined	703		502
Less: Unallocated corporate expenses	22		15
Total Company EBITDA As Defined	681		487
Depreciation and amortization expense	69		35
Interest expense - net	248		172
Acquisition-related costs	7		12
Stock compensation expense	26		18
Refinancing costs	22		—
Other, net	16		—
Income from continuing operations before income taxes	$	293	$	250

19

The following table presents total assets by segment (in millions):

	December 28, 2019		September 30, 2019
Total assets
Power & Control	$	7,070	$	7,037
Airframe	6,838		6,672
Non-aviation	262		262
Corporate	3,986		1,322
Assets of discontinued operations	—		962
	$	18,156	$	16,255

The Company’s sales principally originate from the United States, and the Company’s long-lived assets are principally located in the United States.

14.    RETIREMENT PLANS

The components of net periodic pension cost for the Company's defined benefit plans were as follows (in millions):

	Thirteen Week Periods Ended
	December 28, 2019						December 29, 2018
	U.S. Pension Plans			Non-U.S. Pension Plans			U.S. Pension Plans			Non-U.S. Pension Plans
Service cost	$	2		$	1		$	1		$	1
Interest cost	3			1			2			1
Expected return on plan assets	(5		)	(1		)	(3		)	(1		)
Amortization of prior service cost	—			—			—			—
Amortization of actuarial (gain) loss	—			—			—			—
Net periodic pension cost	$	—		$	1		$	—		$	1

The net periodic pension cost for the Company's post-retirement pension plans was immaterial for the thirteen week periods ended December 28, 2019 and December 29, 2018. The defined benefit plan components of total pension cost, other than service cost, are included in other expense in the Company's condensed consolidated statements of income.

15.    ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME

The following table presents the components of accumulated other comprehensive (loss) income, net of taxes, for the thirteen week period ended December 28, 2019 (in millions):

	Unrealized gain (loss) on derivatives designated and qualifying as cash flow hedges (1)			Defined benefit pension plan activity (2)			Currency translation adjustment			Total
Balance at September 30, 2019	$	(172	)	$	(40	)	$	(167	)	$	(379	)
Current-period other comprehensive gain	23			6			98			127
Balance at December 28, 2019	$	(149	)	$	(34	)	$	(69	)	$	(252	)

⁽¹⁾  Unrealized gain represents derivative instruments, net of taxes of $(9.8) million and $22.3 million for the thirteen week periods ended December 28, 2019 and December 29, 2018, respectively.

⁽²⁾  Defined benefit pension plan and other post-retirement plan activity represents pension liability adjustments, net of taxes of $2.1 million for the thirteen week period ended December 28, 2019. There were no material pension liability adjustments, net of taxes for the thirteen week period ended December 29, 2018.

20

A summary of reclassifications out of accumulated other comprehensive (loss) income for the thirteen week periods ended December 28, 2019 and December 29, 2018 is provided below (in millions):

	Amount reclassified
	Thirteen Week Periods Ended
Description of reclassifications out of accumulated other comprehensive (loss) income	December 28, 2019			December 29, 2018
Amortization from redesignated interest rate swap and cap agreements (1)	$	1		$	1
Losses from settlement of foreign currency forward exchange contracts (2)	(1		)	—
Losses reclassified into earnings, net of tax	$	—		$	1

⁽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).

16.    LEASES

The Company leases certain manufacturing facilities, offices, land, equipment and vehicles. Such leases, some of which are noncancelable and, in many cases, include renewals, expire at various dates. Such options to renew are included in the lease term when it is reasonably certain that the option will be exercised. The Company’s lease agreements typically do not contain any significant residual value guarantees or restrictive covenants, and payments within certain lease agreements are adjusted periodically for changes in an index or rate.

The Company determines if an arrangement is a lease at inception. Operating lease assets and liabilities are recognized at the commencement date of the lease based on the present value of lease payments over the lease term. Lease assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. The discount rate implicit within our leases is generally not determinable and therefore we determine the discount rate based on our incremental borrowing rate. The incremental borrowing rate for our leases is determined based on the lease term and the currency in which lease payments are made. The length of a lease term includes options to extend or terminate the lease when it is reasonably certain that the Company will exercise those options. The Company made an accounting policy election to not recognize lease assets or liabilities for leases with a term of 12 months or less. Additionally, when accounting for leases, the Company combines payments for leased assets, related services and other components of a lease.

The components of lease expense for the thirteen weeks ended December 28, 2019 are as follows (in millions):

	Classification	December 28, 2019
Operating lease cost	Cost of Sales or Selling and Administrative Expenses	$	7
Finance lease cost
Amortization of leased assets	Cost of Sales	1
Interest on lease liabilities	Interest Expense - Net	1
Total lease cost		$	9

Supplemental cash flow information related to leases for the thirteen week period ended December 28, 2019 is as follows (in millions):

	December 28, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash outflows from operating leases	$	7
Operating cash outflows from finance leases	1
Lease assets obtained in exchange for new lease obligations:
Operating leases	$	10

21

Supplemental balance sheet information related to leases is as follows (in millions):

	Classification	December 28, 2019
Operating Leases
Operating lease right-of-use assets	Other Assets	$	102
Current operating lease liabilities	Accrued Liabilities	21
Long-term operating lease liabilities	Other Non-current Liabilities	87
Total operating lease liabilities		$	108
Finance Leases
Finance lease right-of-use assets, net	Property, Plant and Equipment—Net	$	70
Current finance lease liabilities	Accrued Liabilities	1
Long-term finance lease liabilities	Other Non-current Liabilities	51
Total finance lease liabilities		$	52

As of December 28, 2019, the Company has the following remaining lease term and weighted average discount rates (in millions):

Weighted-average remaining lease term
Operating leases	6.5 years
Finance leases	18.1 years
Weighted-average discount rate
Operating leases	6.2%
Finance leases	7.9%

Maturities of lease liabilities at December 28, 2019 are as follows (in millions):

	Operating Leases		Finance Leases
2020	$	20	$	4
2021	24		5
2022	20		5
2023	16		5
2024	14		6
Thereafter	38		76
Total future minimum lease payments	132		101
Less: imputed interest	24		49
Present value of lease liabilities reported	$	108	$	52

22

A summary of minimum rental commitments at December 28, 2019 under noncancelable operating leases, which expire at various dates and in most cases contain renewal options, for each of the next five years and thereafter in the aggregate, is as follows (in millions):

	Operating Leases
2020	$	20
2021	25
2022	21
2023	17
2024	14
Thereafter	39
Total lease commitments	$	136

17.    COMMITMENTS AND CONTINGENCIES

On August 8, 2019, a fire caused significant damage to the Niort, France operating facility of Leach International Europe, which is a subsidiary of TransDigm acquired via the Esterline acquisition. Leach International Europe’s results are reported within the Company’s Power & Control segment. The facility as well as certain machinery, equipment and inventory sustained damage. The Company suspended operations at the Niort facility as a result of the fire; however, has transferred certain operations to temporary facilities until operations are fully restored at the rebuilt facility. The facility is estimated to be complete and fully operational between the first and second quarter of fiscal 2021. 

The Company’s insurance covers damage to the facility, equipment, inventory, and other assets, at replacement cost, as well as business interruption, and recovery-related expenses caused by the fire, subject to a $1 million deductible and certain sub-limits based on the nature of the covered item. Anticipated insurance recoveries related to losses and incremental costs incurred are recognized when receipt is probable. Anticipated insurance recoveries in excess of net book value of the damaged property and inventory will not be recorded until all contingencies relating to the claim have been resolved. The timing of and amounts of ultimate insurance recoveries is not known at this time. Expenses incurred relating to this event in the first quarter of fiscal 2020 were not material.

18.    DISCONTINUED OPERATIONS

Current Year Divestitures

On December 20, 2019, TransDigm completed the divestiture of the Souriau-Sunbank Connection Technologies business (“Souriau-Sunbank”) with Eaton Corporation plc (“Eaton”) for approximately $920 million. Souriau-Sunbank was acquired by TransDigm as part of its acquisition of Esterline in March 2019 and was included in TransDigm’s Non-aviation segment. The divestiture represented a strategic shift in TransDigm’s business and, in accordance with US GAAP, qualifies as discontinued operations.

Income from discontinued operations, net of tax was $71 million in the condensed consolidated statements of income for the thirteen week period ended December 28, 2019. The $71 million was comprised of $9 million from Souriau-Sunbank's operations and a gain on the sale of Souriau-Sunbank, net of tax, of $62 million. The following is the summarized operating results for Souriau-Sunbank for the thirteen week period ended December 28, 2019 (in millions):

	Thirteen Week Period Ended December 28, 2019
Net sales	$	79
Income from discontinued operations before income taxes	13
Income tax expense	4
Income from discontinued operations, net of tax	9
Gain from sale of discontinued operations, net of tax	62
Income from discontinued operations, net of tax	$	71

23

At September 30, 2019, Souriau-Sunbank’s assets held-for-sale and liabilities held-for-sale were $962 million and $157 million, respectively. Under US GAAP, assets held for sale are to be reported at lower of its carrying amount or fair value less cost to sell. The following is the summarized balance sheet of Souriau-Sunbank’s assets held-for-sale and liabilities held-for-sale as of September 30, 2019 (in millions):

Assets and Liabilities of Discontinued Operations Held-for-Sale	Fiscal Year Ended September 30, 2019
Cash and cash equivalents	$	29
Trade accounts receivable—Net	67
Inventories—Net	88
Prepaid expenses and other	2
Property, plant and equipment—Net	101
Goodwill	480
Other intangibles—Net	194
Other	1
Total assets of discontinued operations	$	962
Accounts payable	$	33
Accrued liabilities	55
Long-term debt	6
Deferred income taxes	42
Other	21
Total liabilities of discontinued operations	$	157

Prior Year Divestitures

On September 20, 2019, TransDigm completed the divestiture of its Esterline Interface Technology (“EIT”) group of businesses to an affiliate of KPS Capital Partners, LP for approximately $190 million. EIT was acquired by TransDigm as part of its acquisition of Esterline in March 2019 and was included in TransDigm’s Non-aviation segment. The divestiture represented a strategic shift in TransDigm’s business and, in accordance with US GAAP, qualifies as discontinued operations.

There was no impact to the income from discontinued operations in the condensed consolidated statements of income for the thirteen week period ended December 28, 2019.

19.    SUPPLEMENTAL GUARANTOR INFORMATION

TransDigm Inc.’s 2024 Notes, 2025 Notes, 6.375% 2026 Notes, 2026 Secured Notes, 7.50% 2027 Notes and 5.50% 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 December 28, 2019 and September 30, 2019 and its statements of income and comprehensive income and cash flows for the thirteen week periods ended December 28, 2019 and December 29, 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 2024 Notes, 2025 Notes, 6.375% 2026 Notes, 2026 Secured Notes, 7.50% 2027 Notes and 5.50% 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.

24

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING BALANCE SHEET

AS OF DECEMBER 28, 2019

(Amounts in millions)

	TransDigm Group			TransDigm Inc.			TransDigm UK		Subsidiary Guarantors			Non- Guarantor Subsidiaries		Eliminations			Total Consolidated
ASSETS
CURRENT ASSETS:
Cash and cash equivalents	$	—		$	3,087		$	1	$	(15	)	$	1,121	$	—		$	4,194
Trade accounts receivable - Net	—			—			—		161			864		—			1,025
Inventories - Net	—			55			—		899			356		(16		)	1,294
Prepaid expenses and other	—			29			—		52			58		—			139
Total current assets	—			3,171			1		1,097			2,399		(16		)	6,652
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	(4,303		)	15,750			974		17,542			5,957		(35,920		)	—
PROPERTY, PLANT AND  EQUIPMENT - NET	—			15			—		520			218		—			753
GOODWILL	—			83			—		5,895			1,868		—			7,846
OTHER INTANGIBLE ASSETS - NET	—			25			—		2,025			687		—			2,737
DEFERRED INCOME TAXES	—			—			—		—			13		—			13
OTHER	—			20			—		92			43		—			155
TOTAL ASSETS	$	(4,303	)	$	19,064		$	975	$	27,171		$	11,185	$	(35,936	)	$	18,156
LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY
CURRENT LIABILITIES:
Current portion of long-term debt	$	—		$	76		$	—	$	1		$	3	$	—		$	80
Short-term borrowings - trade receivable securitization facility	—			—			—		—			350		—			350
Accounts payable	—			17			—		148			100		—			265
Accrued liabilities	—			2,158			4		240			253		—			2,655
Total current liabilities	—			2,251			4		389			706		—			3,350
LONG-TERM DEBT	—			17,383			492		42			35		—			17,952
DEFERRED INCOME TAXES	—			—			—		350			98		—			448
OTHER NON-CURRENT LIABILITIES	—			273			—		265			167		—			705
Total liabilities	—			19,907			496		1,046			1,006		—			22,455
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	(4,303		)	(843		)	479		26,125			10,175		(35,936		)	(4,303		)
NONCONTROLLING INTERESTS	—			—			—		—			4		—			4
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	$	(4,303	)	$	19,064		$	975	$	27,171		$	11,185	$	(35,936	)	$	18,156

25

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING BALANCE SHEET

AS OF SEPTEMBER 30, 2019

(Amounts in millions)

	TransDigm Group			TransDigm Inc.			TransDigm UK		Subsidiary Guarantors			Non- Guarantor Subsidiaries		Eliminations			Total Consolidated
ASSETS
CURRENT ASSETS:
Cash and cash equivalents	$	—		$	1,092		$	—	$	(12	)	$	387	$	—		$	1,467
Trade accounts receivable - Net	—			—			—		172			896		—			1,068
Inventories - Net	—			52			—		880			316		(15		)	1,233
Assets held-for-sale	—			—			—		206			756		—			962
Prepaid expenses and other	—			27			—		45			63		—			135
Total current assets	—			1,171			—		1,291			2,418		(15		)	4,865
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	(2,894		)	14,729			975		16,373			6,898		(36,081		)	—
PROPERTY, PLANT AND EQUIPMENT - NET	—			17			—		513			227		—			757
GOODWILL	—			83			—		5,544			2,193		—			7,820
OTHER INTANGIBLE ASSETS - NET	—			25			—		2,064			655		—			2,744
OTHER	—			6			—		35			28		—			69
TOTAL ASSETS	$	(2,894	)	$	16,031		$	975	$	25,820		$	12,419	$	(36,096	)	$	16,255
LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY
CURRENT LIABILITIES:
Current portion of long-term debt	$	—		$	76		$	—	$	1		$	3	$	—		$	80
Short-term borrowings - trade receivable securitization facility	—			—			—		—			350		—			350
Accounts payable	—			17			—		160			99		—			276
Accrued liabilities	—			215			12		237			211		—			675
Liabilities held-for-sale	—			—			—		22			135		—			157
Total current liabilities	—			308			12		420			798		—			1,538
LONG-TERM DEBT	—			15,893			492		49			35		—			16,469
DEFERRED INCOME TAXES	—			—			—		347			94		—			441
OTHER NON-CURRENT LIABILITIES	—			315			—		233			143		—			691
Total liabilities	—			16,516			504		1,049			1,070		—			19,139
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	(2,894		)	(485		)	471		24,771			11,339		(36,096		)	(2,894		)
NONCONTROLLING INTERESTS	—			—			—		—			10		—			10
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	$	(2,894	)	$	16,031		$	975	$	25,820		$	12,419	$	(36,096	)	$	16,255

26

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING STATEMENT OF INCOME AND COMPREHENSIVE INCOME

FOR THE THIRTEEN WEEK PERIOD ENDED DECEMBER 28, 2019

(Amounts in millions)

	TransDigm Group			TransDigm Inc.			TransDigm UK			Subsidiary Guarantors			Non- Guarantor Subsidiaries			Eliminations			Total Consolidated
NET SALES	$	—		$	45		$	—		$	1,130		$	347		$	(57	)	$	1,465
COST OF SALES	—			25			—			480			216			(57		)	664
GROSS PROFIT	—			20			—			650			131			—			801
SELLING AND ADMINISTRATIVE EXPENSES	—			54			—			97			50			—			201
AMORTIZATION OF INTANGIBLE ASSETS	—			—			—			30			10			—			40
(LOSS) INCOME FROM OPERATIONS	—			(34		)	—			523			71			—			560
INTEREST EXPENSE (INCOME) - NET	—			250			9			(5		)	(6		)	—			248
REFINANCING COSTS	—			22			—			—			—			—			22
OTHER (INCOME) EXPENSE	—			(3		)	(18		)	2			16			—			(3		)
EQUITY IN INCOME OF SUBSIDIARIES	(304		)	(493		)	—			—			—			797			—
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	304			190			9			526			61			(797		)	293
INCOME TAX PROVISION	—			—			—			50			9			—			59
INCOME FROM CONTINUING OPERATIONS	304			190			9			476			52			(797		)	234
INCOME (LOSS) FROM DISCONTINUED OPERATIONS, NET OF TAX	—			114			—			—			(43		)	—			71
NET INCOME	304			304			9			476			9			(797		)	305
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—			—			—			—			(1		)	—			(1		)
NET INCOME ATTRIBUTABLE TO TD GROUP	$	304		$	304		$	9		$	476		$	8		$	(797	)	$	304
OTHER COMPREHENSIVE INCOME, NET OF TAX	127			43			—			5			132			(180		)	127
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO TD GROUP	$	431		$	347		$	9		$	481		$	140		$	(977	)	$	431

27

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING STATEMENT OF INCOME AND COMPREHENSIVE INCOME

FOR THE THIRTEEN WEEK PERIOD ENDED DECEMBER 29, 2018

(Amounts in millions)

	TransDigm Group			TransDigm Inc.			TransDigm UK			Subsidiary Guarantors		Non- Guarantor Subsidiaries			Eliminations			Total Consolidated
NET SALES	$	—		$	41		$	—		$	809	$	162		$	(19	)	$	993
COST OF SALES	—			23			—			338		87			(19		)	429
GROSS PROFIT	—			18			—			471		75			—			564
SELLING AND ADMINISTRATIVE EXPENSES	—			41			—			64		17			—			122
AMORTIZATION OF INTANGIBLE ASSETS	—			—			—			18		2			—			20
(LOSS) INCOME FROM OPERATIONS	—			(23		)	—			389		56			—			422
INTEREST EXPENSE (INCOME) - NET	—			177			5			—		(10		)	—			172
EQUITY IN INCOME OF SUBSIDIARIES	(196		)	(325		)	—			—		—			521			—
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	196			125			(5		)	389		66			(521		)	250
INCOME TAX PROVISION	—			(71		)	—			119		6			—			54
NET INCOME (LOSS) ATTRIBUTABLE TO TD GROUP	$	196		$	196		$	(5	)	$	270	$	60		$	(521	)	$	196
OTHER COMPREHENSIVE (LOSS) INCOME, NET OF TAX	(85		)	(74		)	—			12		(13		)	75			(85		)
TOTAL COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO TD GROUP	$	111		$	122		$	(5	)	$	282	$	47		$	(446	)	$	111

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TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE THIRTEEN WEEK PERIOD ENDED DECEMBER 28, 2019

(Amounts in millions)

	TransDigm Group			TransDigm Inc.			TransDigm UK			Subsidiary Guarantors			Non- Guarantor Subsidiaries			Eliminations			Total Consolidated
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	$	—		$	(80	)	$	(8	)	$	448		$	72		$	1		$	433
INVESTING ACTIVITIES:
Capital expenditures	—			(1		)	—			(22		)	(4		)	—			(27		)
Proceeds in connection with sale of discontinued operations, net	—			904			—			—			—			—			904
Net cash provided by (used in) investing activities	—			903			—			(22		)	(4		)	—			877
FINANCING ACTIVITIES:
Intercompany activities	44			(285		)	9			(429		)	662			(1		)	—
Proceeds from exercise of stock options	20			—			—			—			—			—			20
Dividend equivalent payments	(64		)	—			—			—			—			—			(64		)
Redemption of senior subordinated notes due 2022, net	—			(1,168		)	—			—			—			—			(1,168		)
Proceeds from 5.50% senior subordinated notes due 2027, net	—			2,625			—			—			—			—			2,625
Other, net	—			—			—			—			1			—			1
Net cash provided by (used in) financing activities	—			1,172			9			(429		)	663			(1		)	1,414
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	—			—			—			—			3			—			3
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	—			1,995			1			(3		)	734			—			2,727
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	—			1,092			—			(12		)	387			—			1,467
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	—		$	3,087		$	1		$	(15	)	$	1,121		$	—		$	4,194

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TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE THIRTEEN WEEK PERIOD ENDED DECEMBER 29, 2018

(Amounts in millions)

	TransDigm Group			TransDigm Inc.			TransDigm UK		Subsidiary Guarantors			Non- Guarantor Subsidiaries			Eliminations		Total Consolidated
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	$	—		$	(19	)	$	—	$	285		$	64		$	—	$	330
INVESTING ACTIVITIES:
Capital expenditures	—			—			—		(20		)	(4		)	—		(24		)
Payments made in connection with acquisitions, net of cash acquired	—			—			—		(29		)	—			—		(29		)
Net cash used in investing activities	—			—			—		(49		)	(4		)	—		(53		)
FINANCING ACTIVITIES:
Intercompany activities	16			430			—		(235		)	(211		)	—		—
Proceeds from exercise of stock options	14			—			—		—			—			—		14
Dividend equivalent payments	(24		)	—			—		—			—			—		(24		)
Net cash provided by (used in) financing activities	6			430			—		(235		)	(211		)	—		(10		)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	—			—			—		—			(3		)	—		(3		)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	6			411			—		1			(154		)	—		264
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	—			1,821			—		(2		)	254			—		2,073
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	6		$	2,232		$	—	$	(1	)	$	100		$	—	$	2,337

20.    SUBSEQUENT EVENTS

On January 7, 2020, the Company paid $1.9 billion in special dividends and dividend equivalent payments in connection with the Board of Directors' authorization and declaration of a special cash dividend of $32.50 on each outstanding share of common stock and cash dividend equivalent payments on vested options outstanding under its stock incentive plans on December 20, 2019. These special dividends and dividend equivalent payments were funded by existing cash on hand and the proceeds received from the completed Souriau-Sunbank divestiture. As of December 28, 2019, approximately $1.9 billion was accrued for the special dividend and dividend equivalent payments in accrued liabilities in the condensed consolidated balance sheets.

On January 22, 2020, TransDigm announced its intention to (i) reprice its existing tranche E terms loans, tranche F term loans and tranche G term loans and (ii) extend the maturity date of its existing tranche F term loans, in each case from existing and new lenders under the senior secured credit facilities. In connection with the repricing, TransDigm may also make certain other modifications to the terms of the senior secured credit facilities.

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Forward-looking Statements

The following discussion of the Company’s financial condition and results of operations should be read together with TD Group’s consolidated financial statements and the related notes included elsewhere in this Quarterly Report on Form 10-Q. References in this section to “TransDigm,” “the Company,” “we,” “us,” “our,” and similar references refer to TD Group, TransDigm Inc. and TransDigm Inc.’s subsidiaries, unless the context otherwise indicates.

This Quarterly Report on Form 10-Q includes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, including, in particular, the statements about the Company’s plans, strategies and prospects under this section entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations.” When used in this Quarterly Report on Form 10-Q, the words “believe,” “may,” “will,” “should,” “expect,” “intend,” “plan,” “predict,” “anticipate,” “estimate” or “continue” and other words and terms of similar meaning are intended to identify forward-looking statements. Although the Company believes that its plans, intentions and expectations reflected in or suggested by such forward-looking statements are reasonable, such forward-looking statements are subject to a number of risks and uncertainties that could cause actual results to differ materially from the forward-looking statements made in this report. Many such factors are outside the control of the Company. Consequently, such forward-looking statements should be regarded solely as our current plans, estimates and beliefs. The Company does not undertake, and specifically declines, any obligation, to publicly release the results of any revisions to these forward-looking statements that may be made to reflect any future events or circumstances after the date of such statements or to reflect the occurrence of anticipated or unanticipated events. All forward-looking statements attributable to the Company or persons acting on its behalf are expressly qualified in their entirety by these cautionary statements.

Important factors that could cause actual results to differ materially from the forward-looking statements made in this Quarterly Report on Form 10-Q include but are not limited to: the sensitivity of our business to the number of flight hours that our customers’ planes spend aloft and our customers’ profitability, both of which are affected by general economic conditions; future geopolitical or other worldwide events; cyber-security threats and natural disasters; our reliance on certain customers; the U.S. defense budget and risks associated with being a government supplier including government audits and investigations; failure to maintain government or industry approvals; failure to complete or successfully integrate acquisitions, including our acquisition of Esterline; our indebtedness; potential environmental liabilities; liabilities arising in connection with litigation; increases in raw material costs, taxes and labor costs that cannot be recovered in product pricing; risks and costs associated with our international sales and operations; and other factors. Please refer to the other information included in this Quarterly Report on Form 10-Q and to Item 1A of the Annual Report on Form 10-K for additional information regarding the foregoing factors that may affect our business.

Overview

We believe we are a leading global designer, producer and supplier of highly engineered aircraft components for use on nearly every commercial and military aircraft in service today. Our business is well diversified due to the broad range of products we offer to our customers. Some of our more significant 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. Each of these product offerings is composed of many individual products that are typically customized to meet the needs of a particular aircraft platform or customer.

For the first quarter of fiscal year 2020, we generated net sales of $1,465 million and net income attributable to TD Group of $304 million. This included net income from continuing operations attributable to TD Group of $233 million and income from discontinued operations, net of tax, of $71 million. EBITDA As Defined was $681 million, or 46.5% of net sales. See the "Non-GAAP Financial Measures" section for certain information regarding EBITDA and EBITDA As Defined, including reconciliations of EBITDA and EBITDA As Defined to net income and net cash provided by operating activities.

Critical Accounting Policies and Estimates

The preparation and fair presentation of the consolidated unaudited interim financial statements and accompanying notes included in this report are the responsibility of management. The financial statements and footnotes have been prepared in accordance with U.S. generally accepted accounting principles for interim financial statements and contain certain amounts that were based upon management’s best estimates, judgments and assumptions that were believed to be reasonable under the circumstances. On an ongoing basis, we evaluate the accounting policies and estimates used to prepare financial statements. Estimates are based on

31

historical experience, judgments and assumptions believed to be reasonable under current facts and circumstances. Actual amounts and results could differ from these estimates used by management.

A comprehensive discussion of the Company’s critical accounting policies and management estimates and significant accounting policies followed in the preparation of the financial statements is included in Item 7 of our Annual Report on Form 10-K for the fiscal year ended September 30, 2019. Other than the adoption of ASC 842, "Leases," there have been no significant changes in critical accounting policies, management estimates or accounting policies since the fiscal year ended September 30, 2019. Refer to Note 4, "Recent Accounting Pronouncements," and Note 16, "Leases," for a discussion of accounting standards recently adopted or required to be adopted in the future.

Acquisitions and Divestitures

Recent acquisitions, including the acquisition of Esterline in March 2019, and divestitures are described in Note 3, “Acquisitions and Divestitures,” to the condensed consolidated financial statements.

Results of Operations

The following table sets forth, for the periods indicated, certain operating data of the Company, including presentation of the amounts as a percentage of net sales (amounts in millions):

	Thirteen Week Periods Ended
	December 28, 2019			% of Sales		December 29, 2018		% of Sales
Net sales	$	1,465		100.0	%	$	993	100.0	%
Cost of sales	664			45.3	%	429		43.2	%
Selling and administrative expenses	201			13.7	%	122		12.3	%
Amortization of intangible assets	40			2.7	%	20		2.1	%
Income from operations	560			38.3	%	422		42.5	%
Interest expense, net	248			16.8	%	172		17.3	%
Refinancing costs	22			1.5	%	—		—	%
Other income	(3		)	(0.2	)%	—		—	%
Income tax provision	59			4.0	%	54		5.4	%
Income from continuing operations	234			16.0	%	196		19.7	%
Less: Net income attributable to noncontrolling interests	(1		)	(0.1	)%	—		—	%
Income from continuing operations attributable to TD Group	233			15.9	%	196		19.7	%
Income from discontinued operations, net of tax	71			4.8	%	—		—	%
Net income attributable to TD Group	$	304		20.8	%	$	196	19.7	%

Changes in Results of Operations

Thirteen week period ended December 28, 2019 compared with the thirteen week period ended December 29, 2018

Total Company

• Net Sales. Net organic sales and acquisition sales and the related dollar and percentage changes for the thirteen week periods ended December 28, 2019 and December 29, 2018 were as follows (amounts in millions):

	Thirteen Week Periods Ended						% Change Total  Sales
	December 28, 2019		December 29, 2018		Change
Organic sales	$	1,080	$	993	$	87	8.7	%
Acquisition sales	385		—		385		38.8	%
	$	1,465	$	993	$	472	47.5	%

The increase in organic sales for the thirteen week period ended December 28, 2019 compared to the thirteen week period ended December 29, 2018, is primarily related to an increase in commercial aftermarket sales ($43 million, an increase of 13.0%), defense sales ($40 million, an increase of 11.0%), and commercial OEM sales ($2 million, an increase of 0.9%).

Acquisition sales represent sales of acquired businesses for the period up to one year subsequent to their respective acquisition dates. The acquisition sales displayed in the table above for the thirteen week period ended December 28, 2019 were attributable to the acquisition of Esterline.

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• Cost of Sales and Gross Profit. Cost of sales increased by $235 million, or 54.8%, to $664 million for the thirteen week period ended December 28, 2019 compared to $429 million for the thirteen week period ended December 29, 2018. Cost of sales and the related percentage of total sales for the thirteen week periods ended December 28, 2019 and December 29, 2018 were as follows (amounts in millions):

	Thirteen Week Periods Ended
	December 28, 2019			December 29, 2018			Change			% Change
Cost of sales - excluding costs below	$	646		$	423		$	223		52.7	%
% of total sales	44.1		%	42.6		%
Foreign currency loss (gain)	14			(2		)	16			800.0	%
% of total sales	1.0		%	(0.2		)%
Stock compensation expense	3			2			1			50.0	%
% of total sales	0.2		%	0.2		%
Acquisition integration costs	1			2			(1		)	(50.0	)%
% of total sales	0.1		%	0.2		%
Inventory acquisition accounting adjustments	—			4			(4		)	(100.0	)%
% of total sales	—		%	0.4		%
Total cost of sales	$	664		$	429		$	235		54.8	%
% of total sales	45.3		%	43.2		%
Gross profit	$	801		$	564		$	237		42.0	%
Gross profit percentage	54.7		%	56.8		%

The increase in the dollar amount of cost of sales during the thirteen week period ended December 28, 2019 was primarily due to increased sales volume through the acquisition of Esterline in March 2019 and organically, and negative foreign currency impact. This was slightly offset by decreases in acquisition integration costs and inventory acquisition accounting costs as presented in the table above.

Gross profit as a percentage of sales decreased by 2.1 percentage points to 54.7% for the thirteen week period ended December 28, 2019 from 56.8% for the thirteen week period ended December 29, 2018. The dollar amount of gross profit increased by $237 million, or 42.0%, for the thirteen week period ended December 28, 2019 compared to the thirteen week period in the prior year due to the following items:

• Gross profit on the sales from the acquisition of Esterline (excluding acquisition-related costs) was approximately $171 million for the thirteen week period ended December 28, 2019, which represented gross profit of approximately 44.5% of the acquisition sales.

• Organic sales growth described above, application of our three core value-driven operating strategies (obtaining profitable new business, continually improving our cost structure, and providing highly engineered value-added products to customers) and positive leverage on our fixed overhead costs spread over a higher production volume resulted in an increase in gross profit of approximately $78 million for the thirteen week period ended December 28, 2019.

• Offsetting the increases in gross profit by $12 million compared to the same period in the prior fiscal year was primarily attributable to negative foreign currency impact, partially offset by decreases in inventory acquisition accounting adjustments and acquisition integration costs.

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• Selling and Administrative Expenses. Selling and administrative expenses increased by $79 million to $201 million, or 13.7% of sales, for the thirteen week period ended December 28, 2019 from $122 million, or 12.3% of sales, for the thirteen week period ended December 29, 2018. Selling and administrative expenses and the related percentage of total sales for the thirteen week periods ended December 28, 2019 and December 29, 2018 were as follows (amounts in millions):

	Thirteen Week Periods Ended
	December 28, 2019			December 29, 2018			Change			% Change
Selling and administrative expenses - excluding costs below	$	173		$	100		$	73		73.0	%
% of total sales	11.8		%	10.1		%
Stock compensation expense	23			16			7			43.8	%
% of total sales	1.6		%	1.6		%
Acquisition-related expenses	5			6			(1		)	(16.7	)%
% of total sales	0.3		%	0.6		%
Total selling and administrative expenses	$	201		$	122		$	79		64.8	%
% of total sales	13.7		%	12.3		%

The increase in the dollar amount of selling and administrative expenses during the thirteen week period ended December 28, 2019 is primarily due to higher stock compensation expense of $7 million. The increase in stock compensation expense is primarily attributable to the stock option grants awarded to key management at the Esterline reporting units.

• Amortization of Intangible Assets. Amortization of intangible assets was $40 million for the thirteen week period ended December 28, 2019 compared to $20 million in the thirteen week period ended December 29, 2018. The increase in amortization expense of $20 million was due to the amortization expense on the definite-lived intangible assets recorded in connection with the fiscal 2019 acquisition of Esterline.

• Refinancing Costs. Refinancing costs of $22 million were recorded for the thirteen week period ended December 28, 2019 and primarily related to the fees incurred on the redemption of the 2022 Notes that occurred in the first quarter of fiscal 2020.

• Other Income. Other income of $3 million was recorded for the thirteen week period ended December 28, 2019 and primarily related to components of net periodic pension benefit costs outside of service costs.

• Interest Expense-net. Interest expense-net includes interest on borrowings outstanding, amortization of debt issuance costs, original issue discount and premium and revolving credit facility fees slightly offset by interest income. Interest expense-net increased $76 million, or 44.2%, to $248 million for the thirteen week period ended December 28, 2019 from $172 million for the comparable thirteen week period last year. The net increase in interest expense-net was primarily due to an increase in the weighted average level of outstanding borrowings, which was approximately $17.9 billion for the thirteen week period ended December 28, 2019 and approximately $13.0 billion for the thirteen week period ended December 29, 2018. The increase in weighted average level of borrowings was primarily due to the activity in the second quarter of fiscal 2019 consisting of the issuance of $4.0 billion in 6.25% 2026 Secured Notes and the issuance of $550 million in 7.50% 2027 Notes and the activity in the first quarter of fiscal 2020 consisting of the issuance of $2.65 billion in 5.50% 2027 Notes. The increases in new debt described above were slightly offset by the redemptions of $550 million in 5.50% 2020 Notes and $1.15 billion in 6.00% 2022 Notes. The weighted average interest rate for cash interest payments on total borrowings outstanding at December 28, 2019 was 5.4%.

• Income Taxes. Income tax expense as a percentage of income before income taxes was approximately 20.1% for the thirteen week period ended December 28, 2019 compared to 21.5% for the thirteen week period ended December 29, 2018. The Company's lower effective tax rate for the thirteen week period ended December 28, 2019 was primarily due to a discrete benefit recognized for excess tax benefits for share-based payments during the thirteen week period ended December 28, 2019, partially offset by an increase in the valuation allowance associated with our net interest expense limitation under IRC Section 163(j) as described in Note 10, "Income Taxes."

• Income from Discontinued Operations. Discontinued operations for the thirteen week period ended December 28, 2019 include the results of the operations of the Souriau-Sunbank Connection Technologies business ("Souriau-Sunbank"). On December 20, 2019, TransDigm completed the divestiture of Souriau-Sunbank to Eaton Corporation plc (“Eaton”) for approximately $920 million. Souriau-Sunbank was acquired by TransDigm as part of its acquisition of Esterline Technologies Corporation in March 2019. The income from discontinued operations for the thirteen week period ended December 28, 2019 is $71 million which includes $9 million for Souriau-Sunbank's operations and a gain on the sale of Souriau-Sunbank, net of tax, of $62 million. There were no discontinued operations for the thirteen week period ended December 29, 2018.

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• Net Income Attributable to TD Group. Net income attributable to TD Group increased $108 million, or 55.1%, to $304 million for the thirteen week period ended December 28, 2019 compared to net income attributable to TD Group of $196 million for the thirteen week period ended December 29, 2018, primarily as a result of the factors referred to above.

• Earnings per Share. Basic and diluted earnings per share was $2.07 for the thirteen week period ended December 28, 2019 and $3.05 per share for the thirteen week period ended December 29, 2018. Basic and diluted earnings per share from continuing operations and discontinued operations was $0.83 and $1.24, respectively, for the thirteen week period ended December 28, 2019. There was no impact on earnings per share from discontinued operations for the thirteen week period ended December 29, 2018. Net income attributable to TD Group for the thirteen week period ended December 28, 2019 of $304 million was decreased by dividend equivalent payments paid or declared of $185 million, or $3.22 per share, resulting in net income available to common shareholders of $119 million, or $2.07 per share. Net income for the thirteen week period ended December 29, 2018 of $196 million was decreased by dividend equivalent payments of $24 million, or $0.43 per share, resulting in net income available to common shareholders of $172 million, or $3.05 per share.

Business Segments

• Segment Net Sales. Net sales by segment for the thirteen week period ended December 28, 2019 and December 29, 2018 were as follows (amounts in millions):

	Thirteen Week Periods Ended
	December 28, 2019		% of Sales		December 29, 2018		% of Sales		Change		% Change
Power & Control	$	752	51.3	%	$	560	56.4	%	$	192	34.3	%
Airframe	674		46.0	%	399		40.2	%	275		68.9	%
Non-aviation	39		2.7	%	34		3.4	%	5		14.7	%
	$	1,465	100.0	%	$	993	100.0	%	$	472	47.5	%

Acquisition sales for the Power & Control segment totaled $126 million, or an increase of 22.5%, resulting from the acquisition of Esterline. Organic sales for the Power & Control segment increased $66 million, an increase of 11.7%, for the thirteen week period ended December 28, 2019 compared to the thirteen week period ended December 29, 2018. The organic sales increase resulted primarily from an increase in defense sales ($34 million, an increase of 12.4%), an increase in commercial aftermarket sales ($28 million, an increase of 18.6%), and an increase in commercial OEM sales ($1 million, an increase of 1.1%).

Acquisition sales for the Airframe segment totaled $255 million, or an increase of 63.9%, resulting from the acquisition of Esterline. Organic sales for the Airframe business increased $20 million, an increase of 5.0%, for the thirteen week period ended December 28, 2019 compared to the thirteen week period ended December 29, 2018. The organic sales increase resulted primarily from increases in commercial aftermarket sales ($15 million, an increase of 8.2%) and defense sales ($5 million, an increase of 6.1%).

Acquisition sales for the Non-aviation segment totaled $4 million, or an increase of 10.8%, resulting from the acquisition of Esterline. Organic sales for the Non-aviation segment increased by $1 million, an increase of 4.5%, for the thirteen week period ended December 28, 2019 compared to the thirteen week period ended December 29, 2018.

• EBITDA As Defined. EBITDA As Defined by segment for the thirteen week periods ended December 28, 2019 and December 29, 2018 were as follows (amounts in millions):

	Thirteen Week Periods Ended
	December 28, 2019		% of  Segment Sales		December 29, 2018		% of  Segment Sales		Change		% Change
Power & Control	$	385	51.2	%	$	300	53.5	%	$	85	28.3	%
Airframe	305		45.3	%	191		48.0	%	114		59.7	%
Non-aviation	13		33.3	%	11		31.4	%	2		18.2	%
	$	703	48.0	%	$	502	50.6	%	$	201	40.0	%

EBITDA As Defined for the Power & Control segment from the acquisition of Esterline was approximately $34.8 million for the thirteen week period ended December 28, 2019. Organic EBITDA As Defined for the Power & Control segment increased approximately $50.2 million, an increase of 16.7%, resulting from organic sales growth in defense, commercial OEM and commercial aftermarket, as well as the application of our three core value-driven operating strategies, and positive leverage on our fixed overhead costs spread over a higher production volume.

EBITDA As Defined for the Airframe segment from the acquisition of Esterline was approximately $95.0 million for the thirteen week period ended December 28, 2019. Organic EBITDA as Defined for the Airframe segment increased approximately $19.0 million, an increase of 9.9%, resulting from organic sales growth in defense, commercial OEM, and commercial aftermarket, as

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well as the application of our three core value-driven operating strategies, and positive leverage on our fixed overhead costs spread over a higher production volume.

EBITDA As Defined for the Non-aviation segment from the acquisition of Esterline was approximately $0.4 million for the thirteen week period ended December 28, 2019. Organic EBITDA As Defined for the Non-aviation segment increased approximately $1.6 million, an increase of 14.5%.

Backlog

As of December 28, 2019, the Company estimated its sales order backlog at $3,528 million compared to an estimated sales order backlog of $2,181 million as of December 29, 2018. The increase in backlog is due to growth from recent acquisitions, particularly the Esterline acquisition, and organic growth in the commercial aftermarket, commercial OEM and defense markets. The majority of the purchase orders outstanding as of December 28, 2019 are scheduled for delivery within the next twelve months. Purchase orders may be subject to cancellation or deferral by the customer prior to shipment. The level of unfilled purchase orders at any given date during the year will be materially affected by the timing of the Company’s receipt of purchase orders and the speed with which those orders are filled. Accordingly, the Company’s backlog as of December 28, 2019 may not necessarily represent the actual amount of shipments or sales for any future period.

Foreign Operations

Although we manufacture a significant portion of our products in the United States, we manufacture certain products in Europe, Asia, Canada, Mexico and other countries globally. We sell our products in the United States as well as in foreign countries. Although the majority of sales of our products are made to customers (including distributors) located in the United States, our products are ultimately sold to and used by customers, including airlines and other end users of aircraft, throughout the world. A number of risks inherent in international operations could have a material adverse effect on our results of operations, including currency fluctuations, difficulties in staffing and managing multi-national operations, general economic and political uncertainties and potential for social unrest in countries in which we operate, limitations on our ability to enforce legal rights and remedies, restrictions on the repatriation of funds, change in trade policies, tariff regulation, difficulties in obtaining export and import licenses and the risk of government financed competition.

There can be no assurance that foreign governments will not adopt regulations or take other action that would have a direct or indirect adverse impact on the business or market opportunities of the Company within such governments’ countries. Furthermore, there can be no assurance that the political, cultural and economic climate outside the United States will be favorable to our operations and growth strategy.

Liquidity and Capital Resources

We have historically maintained a capital structure comprising a mix of equity and debt financing. We vary our leverage both to optimize our equity return and to pursue acquisitions. We expect to meet our current debt obligations as they come due through internally generated funds from current levels of operations and/or through refinancing in the debt markets prior to the maturity dates of our debt.

We continually evaluate our debt facilities to assess whether they most efficiently and effectively meet the current and future needs of our business. The Company evaluates from time to time the appropriateness of its current leverage, taking into consideration the Company’s debt holders, equity holders, credit ratings, acquisition opportunities and other factors.

If the Company has excess cash, it generally prioritizes allocating the excess cash in the following manner: (1) capital spending at existing businesses, (2) acquisitions of businesses, (3) payment of a special dividend and/or repurchases of our common stock and (4) prepayment of indebtedness or repurchase of debt. Whether the Company undertakes common stock repurchases or other aforementioned activities will depend on prevailing market conditions, the Company's liquidity requirements, contractual restrictions and other factors. The amounts involved may be material. In addition, the Company may issue additional debt if prevailing market conditions are favorable to doing so.

The Company’s ability to make scheduled interest payments on, or to refinance, the Company’s indebtedness, or to fund non-acquisition related capital expenditures and research and development efforts, will depend on the Company’s ability to generate cash in the future. This is subject to general economic, financial, competitive, legislative, regulatory and other factors that are beyond its control.

As a result of the debt financing activity in the first quarter of fiscal 2020, interest payments will increase going forward in accordance with the terms of the related indenture. However, in connection with the continued application of our three core value-driven operating strategies (obtaining profitable new business, continually improving our cost structure and providing highly engineered value-added products to customers), we expect to continue to generate strong margins and provide more than sufficient cash provided by operating activities to meet our interest obligations and liquidity needs. We believe our cash provided by operating activities and available borrowing capacity will enable us to make opportunistic investments in our own stock, make strategic business combinations and/or pay dividends to our shareholders.

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On December 20, 2019, TransDigm completed the divestiture of Souriau-Sunbank to Eaton Corporation plc (“Eaton”) for approximately $920 million. Souriau-Sunbank was acquired by TransDigm as part of its acquisition of Esterline Technologies Corporation in March 2019. Also on December 20, 2019, the Company announced that TD Group's Board of Directors authorized and declared a special cash dividend of $32.50 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 was December 30, 2019, and the payment date for the dividend was January 7, 2020. The total cash payment related to the special dividend and dividend equivalent payments on January 7, 2020 was approximately $1.9 billion, which was funded by existing cash on hand and the proceeds received from the completed Souriau-Sunbank divestiture.

We do not anticipate declaring regular quarterly or annual cash dividends on our common stock in the near future. Any declaration of special cash dividends on our common stock in the future will be at the discretion of our Board of Directors and will depend upon our results of operations, earnings, capital requirements, financial condition, future prospects, contractual restrictions under the senior secured credit facility and Indentures, the availability of surplus under Delaware law and other factors deemed relevant by our Board of Directors. TD Group is a holding company and conducts all of its operations through direct and indirect subsidiaries. Unless TD Group receives dividends, distributions, advances, transfers of funds or other payments from our subsidiaries, TD Group will be unable to pay any dividends on our common stock in the future. The ability of any subsidiaries to take any of the foregoing actions is limited by the terms of our senior secured credit facility and Indentures and may be limited by future debt or other agreements that we may enter into. In the future, the Company may increase its borrowings in connection with acquisitions, if cash flow from operating activities becomes insufficient to fund current operations or for other short-term cash needs or for stock repurchases or dividends. Our future leverage will also be impacted by the then current conditions of the credit markets.

Operating Activities. The Company generated $433 million of net cash from operating activities during the thirteen week period ended December 28, 2019 compared to $330 million during the thirteen week period ended December 29, 2018. The increase is primarily attributable to the additional net operating cash inflows generated by the Esterline businesses.

The change in accounts receivable during the thirteen week period ended December 28, 2019 was a source of cash of $51 million compared to a source of cash of $45 million during the thirteen week period ended December 29, 2018. The increase in the source of cash of $6 million is primarily attributable to an increase in sales and related timing of receipt of payment from customers.

The change in inventories during the thirteen week period ended December 28, 2019 was a use of cash of $69 million compared to a use of cash of $29 million during the thirteen week period ended December 29, 2018. The increase in the use of cash is related to an increase in backlog resulting in additional raw material purchases for expected order fulfillments in the second fiscal quarter.

The change in accounts payable during the thirteen week period ended December 28, 2019 was a use of cash of $14 million compared to a source of cash of $3 million during the thirteen week period ended December 29, 2018.

Investing Activities. Net cash provided by investing activities was $877 million during the thirteen week period ended December 28, 2019, consisting of proceeds of $904 million from the divestiture of Souriau-Sunbank and partially offset by capital expenditures of $27 million.

Net cash used in investing activities was $53 million during the thirteen week period ended December 29, 2018 consisting of payments for acquisitions of $29 million, which primarily consisted of Extant's acquisition of NavCom for approximately $27 million, and capital expenditures of $24 million.

Financing Activities. Net cash provided by financing activities during the thirteen week period ended December 28, 2019 was $1,414 million. The source of cash was primarily attributable to $2,625 million in net proceeds from the completion of the 2027 5.50% Notes offering and $20 million in proceeds from stock option exercises. Sources were partially offset by the redemption of the 2022 Notes outstanding for $1,168 million and the payment of $64 million in dividend equivalent payments. In connection with the $32.50 special dividend declared on December 20, 2019, approximately $1,864 million in special dividends and dividend equivalent payments were made in the second fiscal quarter of 2020.

Net cash used in financing activities during the thirteen week period ended December 29, 2018 was $10 million. The use of cash was primarily attributable to the payment of $24 million in dividend equivalent payments partially offset by $14 million in proceeds from stock option exercises.

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Description of Senior Secured Term Loans and Indentures

Senior Secured Term Loans Facility

TransDigm has $7,524 million in fully drawn term loans (the “Term Loans Facility”) and a $760 million revolving credit facility. The Term Loans Facility consists of three tranches of term loans as follows (aggregate principal amount disclosed is as of December 28, 2019):

Term Loans Facility	Aggregate Principal	Maturity Date	Interest Rate
Tranche E	$2,221 million	May 30, 2025	LIBO rate + 2.5%
Tranche F	$3,524 million	June 9, 2023	LIBO rate + 2.5%
Tranche G	$1,779 million	August 22, 2024	LIBO rate + 2.5%

The Term Loans Facility requires quarterly aggregate principal payments of $19.1 million. The revolving commitments consist of two tranches which includes up to $151.5 million of multicurrency revolving commitments. At December 28, 2019, the Company had $41.8 million in letters of credit outstanding and $718.2 million in borrowings available under the revolving commitments.

The interest rates per annum applicable to the loans under the Credit Agreement are, at TransDigm’s option, equal to either an alternate base rate or an adjusted LIBO rate for one, two, three or six-month (or to the extent agreed to by each relevant lender, nine or twelve-month) interest periods chosen by TransDigm, in each case plus an applicable margin percentage. The adjusted LIBO rate related to the tranche E, tranche F and tranche G term loans are not subject to a floor. For the thirteen week period ended December 28, 2019, the applicable interest rates ranged from approximately 4.2% to 4.5% on the existing term loans. Interest rate swaps and caps used to hedge and offset, respectively, the variable interest rates on the credit facility are described in Note 12, “Derivatives and Hedging Activities,” to the condensed consolidated financial statements.

Recent Amendments to the Credit Agreement

On March 14, 2019, the Company entered into Amendment No. 6 to the Second Amended and Restated Credit Agreement ("Amendment No. 6"). Under the terms of Amendment No. 6, the capacity of the revolving credit facility increased from $600 million to $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.

Indentures

Senior Subordinated Notes	Aggregate Principal	Maturity Date	Interest Rate
2024 Notes	$1,200 million	July 15, 2024	6.50%
2025 Notes	$750 million	May 15, 2025	6.50%
2026 Secured Notes	$4,000 million	March 15, 2026	6.250%
6.875% 2026 Notes	$500 million	May 15, 2026	6.875%
6.375% 2026 Notes	$950 million	June 15, 2026	6.375%
7.50% 2027 Notes	$550 million	March 15, 2027	7.50%
5.50% 2027 Notes	$2,650 million	November 15, 2027	5.50%

The 2024 Notes, the 6.375% 2026 Notes, the 7.50% 2027 Notes and the 5.50% 2027 Notes (the “TransDigm Inc. Notes”) were issued at a price of 100% of the principal amount. The initial $450 million offering of the 2025 Notes (also considered to be part of the “TransDigm Inc. Notes”) were issued at a price of 100% of the principal amount and the subsequent $300 million offering of 2025 Notes in the second quarter of fiscal 2017 were issued at a price of 101.5% of the principal amount, resulting in gross proceeds of $304.5 million. The 6.875% 2026 Notes (the "TransDigm UK Notes" and together with the TransDigm Inc. Notes, the "Notes," are further described below) offered in May 2018 were issued at a price of 99.24% of the principal amount, resulting in gross proceeds of $496.2 million. The initial $3,800 million offering of the 2026 Secured Notes (the "Secured Notes") were issued at a price of 100% of their principal amount and the subsequent $200 million offering of the 2026 Secured Notes in the second quarter of fiscal 2019 were issued at a price of 101% of their principal amount, resulting in gross proceeds of $4,002 million.

The Notes do not require principal payments prior to their maturity. Interest under the Notes is payable semi-annually. The Notes represent our unsecured obligations ranking subordinate to our senior debt, as defined in the applicable indentures.

The Notes are subordinated to all of our existing and future senior debt, rank equally with all of our existing and future senior subordinated debt and rank senior to all of our future debt that is expressly subordinated to the Notes. The TransDigm Inc. Notes are guaranteed on a senior subordinated unsecured basis by TD Group and TransDigm Inc.'s domestic restricted subsidiaries. The TransDigm UK Notes are guaranteed on a senior subordinated basis by TransDigm Inc., TD Group and TransDigm Inc.'s domestic

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restricted subsidiaries. The guarantees of the Notes are subordinated to all of the guarantors’ existing and future senior debt, rank equally with all of their existing and future senior subordinated debt and rank senior to all of their future debt that is expressly subordinated to the guarantees of the Notes. The Notes are structurally subordinated to all of the liabilities of TD Group’s non-guarantor subsidiaries. The Notes contain many of the restrictive covenants included in the Credit Agreement. TransDigm is in compliance with all of the covenants contained in the Notes.

On January 30, 2019, the Company entered into a purchase agreement in connection with a private offering of $3.8 billion aggregate principal amount in 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. All $4.0 billion aggregate principal amount of the secured notes will constitute a single class and was issued under a single indenture (herein the "2026 Secured Notes"). The notes in the first secured notes offering were issued at a price of 100% of their principal amount and the notes in the second secured notes offering were issued at a price of 101% of their principal amount. The 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 offerings closed on February 13, 2019 and mature on March 15, 2026.

On February 13, 2019, the Company announced a cash tender offer for any and all of its outstanding 2020 Notes. On March 15, 2019, the Company redeemed the principal amount of $550 million in 2020 Notes, plus accrued and unpaid interest of approximately $12.6 million. The Company recorded refinancing costs of $1.7 million during the thirteen and thirty-nine week periods ended December 28, 2019 representing unamortized debt issuance costs expensed in conjunction with the redemption of the 2020 Notes.

On March 14, 2019, in connection with the closing of the acquisition of Esterline, the Company announced a cash tender offer for any and all of its outstanding 2023 Notes. On April 15, 2019, the Company redeemed the principal amount of approximately $373.8 million (€330.0 million as the 2023 Notes were denominated in Euros), plus accrued interest of approximately $6.8 million, early redemption premium of $6.8 million and fees of approximately $0.2 million.

On November 13, 2019, the Company issued $2,650 million in aggregate principal amount of 5.50% Senior Subordinated Notes due 2027 (herein the "5.50% 2027 Notes") at an issue price of 100% of the principal amount thereof in a private offering. The 2027 Notes were issued pursuant to an indenture, dated as of November 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.

On November 26, 2019, the Company used a portion of the net proceeds from the offering of the 5.50% 2027 Notes to redeem all of its outstanding 6.00% 2022 Notes. The Company redeemed the principal amount of $1,150 million, plus accrued interest of approximately $25.5 million and early redemption premium of $17.3 million.

Certain Restrictive Covenants in Our Debt Documents

The Credit Agreement and the Indentures governing the Notes contain restrictive covenants that, among other things, limit the incurrence of additional indebtedness, the payment of special dividends, transactions with affiliates, asset sales, acquisitions, mergers and consolidations, liens and encumbrances, and prepayments of certain other indebtedness.

The restrictive covenants included in the Credit Agreement are subject to amendments executed periodically. The most recent amendment that impacted the restrictive covenants contained in the Credit Agreement is Amendment No. 6. The restrictive covenants are described above in the Recent Amendments to the Credit Agreement section.

Under the terms of the Credit Agreement, TransDigm is entitled, on one or more occasions, to request additional term loans or additional revolving commitments to the extent that the existing or new lenders agree to provide such incremental term loans or additional revolving commitments provided that, among other conditions, our consolidated net leverage ratio would be no greater than 7.25 to 1.00 and the consolidated secured net debt ratio would be no greater than 5.00 to 1.00, in each case, after giving effect to such incremental term loans or additional revolving commitments.

The Credit Agreement requires mandatory prepayments of principal based on certain percentages of Excess Cash Flow (as defined in the Credit Agreement), commencing 90 days after the end of each fiscal year, subject to certain exceptions. In addition, subject to certain exceptions (including, with respect to asset sales, the reinvestment in productive assets), TransDigm will be required to prepay the loans outstanding under the Credit Agreement at 100% of the principal amount thereof, plus accrued and unpaid interest, with the net cash proceeds of certain asset sales and issuance or incurrence of certain indebtedness. No matters mandating prepayments occurred during the quarter ended December 28, 2019.

In addition, under the Credit Agreement, if the usage of the revolving credit facility exceeds 35% of the total revolving commitments, the Company will be required to maintain a maximum consolidated net leverage ratio of net debt, as defined, to trailing four-quarter EBITDA As Defined. A breach of any of the covenants or an inability to comply with the required leverage ratio could result in a default under the Credit Agreement or the Indentures.

If any such default occurs, the lenders under the Credit Agreement and the holders of the Notes may elect to declare all outstanding borrowings, together with accrued interest and other amounts payable thereunder, to be immediately due and payable. The lenders

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under the Credit Agreement also have the right in these circumstances to terminate any commitments they have to provide further borrowings. In addition, following an event of default under the Credit Agreement, the lenders thereunder will have the right to proceed against the collateral granted to them to secure the debt, which includes our available cash, and they will also have the right to prevent us from making debt service payments on the Notes.

As of December 28, 2019, the Company was in compliance with all of its debt covenants.

Trade Receivables Securitization

During fiscal 2014, the Company established a trade receivable securitization facility (the “Securitization Facility”). The Securitization Facility effectively increases the Company’s borrowing capacity depending on the amount of the domestic operations’ trade accounts receivable. The Securitization Facility includes the right for the Company to exercise annual one year extensions as long as there have been no termination events as defined by the agreement. The Company uses the proceeds from the Securitization Facility as an alternative to other forms of debt, effectively reducing borrowing costs.

On July 30, 2019, the Company amended the Securitization Facility to extend the maturity date to July 28, 2020. As of December 28, 2019, the Company has borrowed $350 million under the Securitization Facility, which bears interest at a rate of 0.9% plus LIBOR. At December 28, 2019, the applicable interest rate was 2.6%. The Securitization Facility is collateralized by substantially all of the Company’s domestic operations’ trade accounts receivable.

Stock Repurchase Program

On November 8, 2017, our Board of Directors, authorized a stock repurchase program permitting repurchases of our outstanding shares not to exceed $650 million in the aggregate, subject to any restrictions specified in the Credit Agreement and/or Indentures governing the existing Notes. No repurchases were made under the program during the quarter ended December 28, 2019. As of December 28, 2019, $650 million in repurchases are allowable under the program subject to any restrictions specified in the Credit Agreement and/or Indentures governing the existing Notes.

Off-Balance Sheet Arrangements

The Company utilizes letters of credit to back certain payment and performance obligations. Letters of credit are subject to limits based on amounts outstanding under the Company’s revolving credit facility. As of December 28, 2019, the Company had $41.8 million in letters of credit outstanding.

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Non-GAAP Financial Measures

We present below certain financial information based on our EBITDA and EBITDA As Defined. References to “EBITDA” mean earnings before interest, taxes, depreciation and amortization, and references to “EBITDA As Defined” mean EBITDA plus, as applicable for each relevant period, certain adjustments as set forth in the reconciliations of net income to EBITDA and EBITDA As Defined and the reconciliations of net cash provided by operating activities to EBITDA and EBITDA As Defined presented below.

Neither EBITDA nor EBITDA As Defined is a measurement of financial performance under accounting principles generally accepted in the United States of America (“US GAAP”). We present EBITDA and EBITDA As Defined because we believe they are useful indicators for evaluating operating performance and liquidity.

Our management believes that EBITDA and EBITDA As Defined are useful as indicators of liquidity because securities analysts, investors, rating agencies and others use EBITDA to evaluate a company’s ability to incur and service debt. In addition, EBITDA As Defined is useful to investors because the revolving credit facility under our senior secured credit facility requires compliance under certain circumstances, on a pro forma basis, with a financial covenant that measures the ratio of the amount of our secured indebtedness to the amount of our Consolidated EBITDA defined in the same manner as we define EBITDA As Defined herein.

In addition to the above, our management uses EBITDA As Defined to review and assess the performance of the management team in connection with employee incentive programs and to prepare its annual budget and financial projections. Moreover, our management uses EBITDA As Defined to evaluate acquisitions.

Although we use EBITDA and EBITDA As Defined as measures to assess the performance of our business and for the other purposes set forth above, the use of these non-GAAP financial measures as analytical tools has limitations, and you should not consider any of them in isolation, or as a substitute for analysis of our results of operations as reported in accordance with US GAAP. Some of these limitations are:

• neither EBITDA nor EBITDA As Defined reflects the significant interest expense, or the cash requirements, necessary to service interest payments on our indebtedness;

• although depreciation and amortization are non-cash charges, the assets being depreciated and amortized will often have to be replaced in the future, and neither EBITDA nor EBITDA As Defined reflects any cash requirements for such replacements;

• the omission of the substantial amortization expense associated with our intangible assets further limits the usefulness of EBITDA and EBITDA As Defined;

• neither EBITDA nor EBITDA As Defined includes the payment of taxes, which is a necessary element of our operations; and

• EBITDA As Defined excludes the cash expense we have incurred to integrate acquired businesses into our operations, which is a necessary element of certain of our acquisitions.

Because of these limitations, EBITDA and EBITDA As Defined should not be considered as measures of discretionary cash available to us to invest in the growth of our business. Management compensates for these limitations by not viewing EBITDA or EBITDA As Defined in isolation and specifically by using other US GAAP measures, such as net income, net sales and operating profit, to measure our operating performance. Neither EBITDA nor EBITDA As Defined is a measurement of financial performance under US GAAP, and neither should be considered as an alternative to net income or cash flow from operations determined in accordance with US GAAP. Our calculation of EBITDA and EBITDA As Defined may not be comparable to the calculation of similarly titled measures reported by other companies.

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The following table sets forth a reconciliation of net income to EBITDA and EBITDA As Defined (in millions):

	Thirteen Week Periods Ended
	December 28, 2019		December 29, 2018
Income from continuing operations	$	234	$	196
Adjustments:
Depreciation and amortization expense	69		35
Interest expense, net	248		172
Income tax provision	59		54
EBITDA	610		457
Adjustments:
Inventory acquisition accounting adjustments(1)	—		4
Acquisition integration costs(2)	6		2
Acquisition transaction-related expenses(3)	1		5
Non-cash stock compensation expense(4)	26		18
Refinancing costs(5)	22		—
Other, net(6)	16		1
EBITDA As Defined	$	681	$	487

⁽¹⁾  Represents accounting adjustments to inventory associated with acquisitions of businesses and product lines that were charged to cost of sales when the inventory was sold.

⁽²⁾  Represents costs incurred to integrate acquired businesses and product lines into TD Group’s operations, facility relocation costs and other acquisition-related costs.

⁽³⁾  Represents transaction-related costs comprising deal fees; legal, financial and tax due diligence expenses, and valuation costs that are required to be expensed as incurred.

⁽⁴⁾  Represents the compensation expense recognized by TD Group under our stock incentive plans.

⁽⁵⁾  Represents costs expensed related to debt financing activities, including new issuances, extinguishments, refinancings and amendments to existing agreements.

⁽⁶⁾  Primarily represents foreign currency transaction gain or loss, payroll withholding taxes related to dividend equivalent payments and stock option exercises, non-service related pension costs, deferred compensation and gain or loss on sale of fixed assets.

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The following table sets forth a reconciliation of net cash provided by operating activities to EBITDA and EBITDA As Defined (in millions):

	Thirteen Week Periods Ended
	December 28, 2019			December 29, 2018
Net cash provided by operating activities	$	433		$	330
Adjustments:
Changes in assets and liabilities, net of effects from acquisitions of businesses	(89		)	(75		)
Interest expense, net(1)	240			166
Income tax provision - current	87			54
Non-cash stock compensation expense(2)	(26		)	(18		)
Refinancing costs(6)	(22		)	—
EBITDA from discontinued operations(8)	(13		)	—
EBITDA	610			457
Adjustments:
Inventory acquisition accounting adjustments(3)	—			4
Acquisition integration costs(4)	6			2
Acquisition transaction-related expenses(5)	1			5
Non-cash stock compensation expense(2)	26			18
Refinancing costs(6)	22			—
Other, net(7)	16			1
EBITDA As Defined	$	681		$	487

⁽¹⁾  Represents interest expense excluding the amortization of debt issuance costs and premium and discount on debt.

⁽²⁾  Represents the compensation expense recognized by TD Group under our stock incentive plans.

⁽³⁾  Represents accounting adjustments to inventory associated with acquisitions of businesses and product lines that were charged to cost of sales when the inventory was sold.

⁽⁴⁾  Represents costs incurred to integrate acquired businesses and product lines into TD Group’s operations, facility relocation costs and other acquisition-related costs.

⁽⁵⁾  Represents transaction-related costs comprising deal fees; legal, financial and tax due diligence expenses, and valuation costs that are required to be expensed as incurred.

⁽⁶⁾  Represents costs expensed related to debt financing activities, including new issuances, extinguishments, refinancings and amendments to existing agreements.

⁽⁷⁾  Primarily represents foreign currency transaction gain or loss, payroll withholding taxes related to dividend equivalent payments and stock option exercises, non-service related pension costs, deferred compensation and gain or loss on sale of fixed assets.

⁽⁸⁾  The fiscal 2020 results include the divestiture of Souriau-Sunbank. See Note 18, "Discontinued Operations," to the condensed consolidated financial statements included herein for further information.

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ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISK

The information called for by this item is provided under the caption 'Description of Senior Secured Credit Facilities and Indentures' under Item 2 - "Management's Discussion and Analysis of Financial Condition and Results of Operations." Market risks are described more fully within “Quantitative and Qualitative Disclosures About Market Risk” in Part II, Item 7A of our most recent Form 10-K (for the fiscal year ended September 30, 2019). These market risks have not materially changed for the first quarter of fiscal 2020.

ITEM 4. CONTROLS AND PROCEDURES

As of December 28, 2019, TD Group carried out an evaluation, under the supervision and with the participation of TD Group’s management, including its President, Chief Executive Officer and Director (Principal Executive Officer) and Chief Financial Officer (Principal Financial Officer), of the effectiveness of the design and operation of TD Group’s disclosure controls and procedures. Based upon that evaluation, the President, Chief Executive Officer and Director and Chief Financial Officer concluded that TD Group’s disclosure controls and procedures are effective to ensure that information required to be disclosed by TD Group in the reports it files or submits under the Securities Exchange Act of 1934, as amended, is recorded, processed, summarized and reported, within the time periods specified by the Securities and Exchange Commission’s rules and forms, and that such information is accumulated and communicated to TD Group’s management, including the President, Chief Executive Officer and Director and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure. In designing and evaluating the disclosure controls and procedures, TD Group’s management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and management necessarily was required to apply its judgment in designing and evaluating the controls and procedures.

Changes in Internal Control over Financial Reporting

Beginning on October 1, 2019, the Company implemented ASC 842, "Leases." The adoption of ASC 842 resulted in changes to processes and control activities related to lease accounting, including the implementation of a supporting information technology application. There have been no other changes in the Company’s internal control over financial reporting that occurred during the fiscal quarter ended December 28, 2019, that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting.

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PART II: OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

We and certain of our current or former officers and directors are defendants in a consolidated securities class action captioned In re TransDigm Group, Inc. Securities Litigation, Case No. 1:17-cv-01677-DCN (N.D. Ohio). The cases were originally filed on August 10, 2017, and September 18, 2017 and were consolidated on December 5, 2017. The plaintiffs allege that the defendants made false or misleading statements with respect to, or failed to disclose, the impact of certain alleged business practices in connection with sales to the U.S. government on the Company’s growth and profitability. The plaintiffs assert claims under Section 10(b) of the Exchange Act and Rule 10b-5 promulgated thereunder and Section 20(a) of the Exchange Act, and seek unspecified monetary damages and other relief. In addition, we, as nominal defendant, and certain of our current or former officers and directors are defendants in a shareholder derivative action captioned Sciabacucchi v. Howley et al., No. 1:17-cv-1971-DCN (N.D. Ohio). The case was filed on September 19, 2017. The plaintiffs allege breach of fiduciary duty and other claims arising out of substantially the same actions or inactions alleged in the securities class actions described above. This action has been stayed pending the outcome of a motion to dismiss on the securities class action. Although we are only a nominal defendant in the derivative action, we could have indemnification obligations and/or be required to advance the costs and expenses of the officer and director defendants in the action.

We intend to vigorously defend these matters and believe they are without merit. We also believe we have sufficient insurance coverage available for these matters. Therefore, we do not expect these matters to have a material adverse impact on our financial condition or results of operations. However, given the preliminary status of the litigation, it is difficult to predict the likelihood of an adverse outcome or estimate a range of any potential loss.

ITEM 1A. RISK FACTORS

In addition to the other information set forth in this report, you should carefully consider the risk factors disclosed in Item 1A of our Annual Report on Form 10-K for the fiscal year ended September 30, 2019, filed on November 19, 2019. There have been no material changes for the first quarter of fiscal 2020 to the risk factors set forth therein.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS: PURCHASES OF EQUITY SECURITIES BY THE ISSUER

On November 8, 2017, our Board of Directors, authorized a stock repurchase program permitting repurchases of our outstanding shares not to exceed $650 million in the aggregate, subject to any restrictions specified in the Credit Agreement and/or Indentures governing the existing Notes. No repurchases were made under the program during the thirteen week period ended December 28, 2019. As of December 28, 2019, $650 million in repurchases are allowable under the program subject to any restrictions specified in the Credit Agreement and/or Indentures governing the existing Notes.

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ITEM 6. EXHIBITS

Exhibit No.	Description
4.1	Indenture, dated as of November 13, 2019, among TransDigm Group Incorporated, as a guarantor, the subsidiary guarantors party thereto and The Bank of New York Mellon Trust Company, N.A., as trustee, relating to TransDigm Inc.'s 5.50% Senior Subordinated Notes due 2027
4.2	Form of 5.50% Senior Subordinated Notes due 2027
4.3	Registration Rights Agreement, dates as of November 13, 2019, among TransDigm Inc., as issuer, TransDigm Group Incorporated, as a guarantor, the subsidiary guarantors party thereto and Morgan Stanley & Co. LLC, as representative for the initial purchasers listed therein
10.1	TransDigm Group Incorporated 2019 Stock Option Plan*
31.1	Certification by Principal Executive Officer of TransDigm Group Incorporated pursuant to Rule 13a-14(a) or 15d- 14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2	Certification by Principal Financial Officer of TransDigm Group Incorporated pursuant to Rule 13a-14(a) or 15d- 14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1	Certification by Principal Executive Officer of TransDigm Group Incorporated pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2	Certification by Principal Financial Officer of TransDigm Group Incorporated pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101	Financial Statements and Notes to the Condensed Consolidated Financial Statements formatted in XBRL

* Indicates management contract or compensatory plan contract or arrangement.

46

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

TRANSDIGM GROUP INCORPORATED

SIGNATURE	TITLE	DATE
/s/ Kevin Stein	President, Chief Executive Officer and Director (Principal Executive Officer)	February 4, 2020
Kevin Stein
/s/ Michael Lisman	Chief Financial Officer (Principal Financial Officer)	February 4, 2020
Michael Lisman

47

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Kevin Stein, certify that:

1. I have reviewed this quarterly report on Form 10-Q of TransDigm Group Incorporated;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s first fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s Board of Directors:

(a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: February 4, 2020

/s/ Kevin Stein

Name: Kevin Stein

Title: President, Chief Executive Officer and Director

(Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Michael Lisman, certify that:

1. I have reviewed this quarterly report on Form 10-Q of TransDigm Group Incorporated;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s first fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s Board of Directors:

(a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: February 4, 2020

/s/ Michael Lisman

Name: Michael Lisman

Title: Chief Financial Officer

(Principal Financial Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of TransDigm Group Incorporated (the “Company”) for the quarter ended December 28, 2019 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Kevin Stein, President, Chief Executive Officer and Director (Principal Executive Officer), certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities and Exchange Act of 1934; and

2. The information contained in the Report fairly presents in all material respects, the financial condition of the Company as of the dates indicated and results of operations of the Company for the periods indicated.

Date: February 4, 2020

/s/ Kevin Stein

Name: Kevin Stein

Title: President, Chief Executive Officer and Director

(Principal Executive Officer)

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of TransDigm Group Incorporated (the “Company”) for the quarter ended December 28, 2019 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Michael Lisman, Chief Financial Officer (Principal Financial Officer) certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities and Exchange Act of 1934; and

2. The information contained in the Report fairly presents in all material respects, the financial condition of the Company as of the dates indicated and results of operations of the Company for the periods indicated.

Date: February 4, 2020

/s/ Michael Lisman

Name: Michael Lisman

Title: Chief Financial Officer

(Principal Financial Officer)

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DESCRIPTION OF THE BUSINESS - Narratives (Details)	Dec. 28, 2019
Accounting Policies [Abstract]
Percentage of ownership in subsidiary	100.00%

XML

ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)

3 Months Ended

Dec. 28, 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 thirteen week period ended December 28, 2019 (in millions):

	Unrealized gain (loss) on derivatives designated and qualifying as cash flow hedges (1)			Defined benefit pension plan activity (2)			Currency translation adjustment			Total
Balance at September 30, 2019	$	(172	)	$	(40	)	$	(167	)	$	(379	)
Current-period other comprehensive gain	23			6			98			127
Balance at December 28, 2019	$	(149	)	$	(34	)	$	(69	)	$	(252	)

⁽¹⁾  Unrealized gain represents derivative instruments, net of taxes of $(9.8) million and $22.3 million for the thirteen week periods ended December 28, 2019 and December 29, 2018, respectively.

⁽²⁾ 

Defined benefit pension plan and other post-retirement plan activity represents pension liability adjustments, net of taxes of $2.1 million for the thirteen week period ended December 28, 2019. There were no material pension liability adjustments, net of taxes for the thirteen week period ended December 29, 2018

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 thirteen week periods ended December 28, 2019 and December 29, 2018 is provided below (in millions):

	Amount reclassified
	Thirteen Week Periods Ended
Description of reclassifications out of accumulated other comprehensive (loss) income	December 28, 2019			December 29, 2018
Amortization from redesignated interest rate swap and cap agreements (1)	$	1		$	1
Losses from settlement of foreign currency forward exchange contracts (2)	(1		)	—
Losses reclassified into earnings, net of tax	$	—		$	1

⁽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).

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

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DERIVATIVES AND HEDGING ACTIVITIES - Narratives (Details) - USD ($) $ in Millions		3 Months Ended
		Dec. 28, 2019	Dec. 29, 2018
Unrealized gain (loss) on derivatives designated and qualifying as cash flow hedges (1) | Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative [Line Items]
Interest Expense	[1]	$ (1.0)	$ (1.0)
December 30, 2017 Redesignation [Member] | Unrealized gain (loss) on derivatives designated and qualifying as cash flow hedges (1) | Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative [Line Items]
Interest Expense		1.1
September 30, 2016 Redesignation [Member] | Unrealized gain (loss) on derivatives designated and qualifying as cash flow hedges (1) | Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative [Line Items]
Interest Expense		5.0	1.1
March 31, 2018 Redesignation [Member] | Unrealized gain (loss) on derivatives designated and qualifying as cash flow hedges (1) | Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative [Line Items]
Interest Income, Other		$ 2.8	$ 0.7
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		$ 17.0
Interest Rate Cap
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Gross Amount to be Transferred		4.8
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Tax to be Transferred		$ 1.1
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		$ 400.0
Interest rate swap beginning June 30, 2020 [Member] | Tranche E
Derivative [Line Items]
Derivative, Notional Amount		$ 750.0
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		$ 750.0
Derivative, Cap Interest Rate		2.50%
Interest rate cap agreements beginning June 30, 2016 [Member] | Tranche F
Derivative [Line Items]
Derivative, Notional Amount		$ 400.0
Derivative, Cap Interest Rate		2.00%
Interest Rate Swap | Tranche F
Derivative [Line Items]
Derivative, Notional Amount		$ 1,000.0
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		$ 500.0
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		$ 2.0
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Tax to be Transferred		0.5
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		7.9
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Tax to be Transferred		1.9
Interest rate swap beginning September 30, 2017 [Member] | Tranche G [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 400.0
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		$ 750.0
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		$ 191.9
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Gross Amount to be Transferred		3.0
Selling, General and Administrative Expenses [Member]
Derivative [Line Items]
Gain (Loss) on foreign currency contracts not designated as accounting hedges		0.4
Sales [Member]
Derivative [Line Items]
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net		$ 0.2

[1] This component of accumulated other comprehensive (loss) income is included in interest expense (see Note 12, “Derivatives and Hedging Activities,” for additional information).

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SEGMENTS - Total Assets by Segment (Details) - USD ($) $ in Millions	Dec. 28, 2019	Sep. 30, 2019
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 18,156	$ 16,255
Operating Segments | Power & Control
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	7,070	7,037
Operating Segments | Airframe
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	6,838	6,672
Operating Segments | Non- aviation
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	262	262
Corporate, Non-Segment
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	3,986	1,322
Discontinued Operations, Held-for-sale [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 0	$ 962

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RECENT ACCOUNTING PRONOUNCEMENTS (Policies)

3 Months Ended

Dec. 28, 2019

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

RECENT ACCOUNTING PRONOUNCEMENTS

RECENT ACCOUNTING PRONOUNCEMENTS

In February 2016, the FASB issued ASU 2016-02, “Leases (ASC 842),” which requires lessees to recognize a right-of-use asset and lease liability for all leases with a term of more than 12 months. ASU 2016-02 was effective for the Company on October 1, 2019, and required a modified retrospective application. In July 2018, the FASB issued ASU 2018-11, “Leases (ASC 842) Targeted Improvements,” which provided an additional transition method that allowed entities to initially apply the new standard at the adoption date and recognize a cumulative effect adjustment to the opening balance of retained earnings in the period of adoption without restating prior periods. The Company has completed the necessary changes to the consolidated financial statements and related disclosures, internal controls, financial policies and information systems. On October 1, 2019, the Company adopted ASC 842 and related amendments using the modified retrospective method. Results for reporting periods beginning after October 1, 2019, are presented under ASC 842, while prior period amounts continue to be reported under ASC 840, “Leases." The Company elected to apply the package of practical expedients permitted within the new standard, which among other things, allows the carry forward of historical lease classification of existing leases. Additionally, the adoption of the new standard resulted in the recording of lease assets and lease liabilities for operating leases of $99 million and $105 million, respectively, as of October 1, 2019. The effects of our transition to ASC 842 resulted in no cumulative adjustment to retained earnings in the period of adoption. The adoption of the standard did not have a material impact on our condensed consolidated statements of income or cash flows. Refer to Note 16, "Leases," for additional information.

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 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 December 2019, the FASB issued ASU 2019-12, “Income Taxes (ASC 740) - Simplifying the Accounting for Income Taxes,” which simplifies the accounting for income taxes by removing certain exceptions to the general principles in ASC 740. The amendments also improve consistent application of and simplify US GAAP for other areas of ASC 740 by clarifying and amending existing guidance. This guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. Early adoption of the amendments is permitted, including adoption in any interim period for which financial statements have not yet been issued. Depending on the amendment, adoption may be applied on the retrospective, modified retrospective or prospective basis. The Company is currently evaluating the impact of adopting this standard on our consolidated financial statements and disclosures.

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SEGMENTS

3 Months Ended

Dec. 28, 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 headsets for high-noise, medium-noise, and dismounted applications, 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 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 US 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 US 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.

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COMMITMENTS AND CONTINGENCIES (Notes)

3 Months Ended

Dec. 28, 2019

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies Disclosure [Text Block]

COMMITMENTS AND CONTINGENCIES

On August 8, 2019, a fire caused significant damage to the Niort, France operating facility of Leach International Europe, which is a subsidiary of TransDigm acquired via the Esterline acquisition. Leach International Europe’s results are reported within the Company’s Power & Control segment. The facility as well as certain machinery, equipment and inventory sustained damage. The Company suspended operations at the Niort facility as a result of the fire; however, has transferred certain operations to temporary facilities until operations are fully restored at the rebuilt facility. The facility is estimated to be complete and fully operational between the first and second quarter of fiscal 2021. 

The Company’s insurance covers damage to the facility, equipment, inventory, and other assets, at replacement cost, as well as business interruption, and recovery-related expenses caused by the fire, subject to a $1 million deductible and certain sub-limits based on the nature of the covered item. Anticipated insurance recoveries related to losses and incremental costs incurred are recognized when receipt is probable. Anticipated insurance recoveries in excess of net book value of the damaged property and inventory will not be recorded until all contingencies relating to the claim have been resolved. The timing of and amounts of ultimate insurance recoveries is not known at this time. Expenses incurred relating to this event in the first quarter of fiscal 2020 were not material.

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REVENUE

3 Months Ended

Dec. 28, 2019

Revenue Recognition [Abstract]

Revenue from Contract with Customer [Text Block]

REVENUE RECOGNITION

TransDigm's sales are concentrated in the aerospace industry. The Company’s customers include: distributors of aerospace components, commercial airlines, large commercial transport and regional and business aircraft OEMs, various armed forces of the United States and friendly foreign governments, defense OEMs, system suppliers, and various other industrial customers.

The majority of the Company's revenue is recorded at a point in time. 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.

In some contracts, the Company found that 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. Therefore, we recognize revenue over time for those agreements that have a right to margin and where the products being produced have no alternative use. 

Based on our production cycle, it is generally expected that goods related to the revenue 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.

Shipping and handling fees and costs incurred in connection with products sold are recorded in cost of sales in the condensed 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 statements of income.

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 millions):

	December 28, 2019		September 30, 2019		Change
Contract assets, current (1)	$	43	$	44	$	(1	)
Contract assets, non-current (2)	6		7		(1		)
Total contract assets	49		51		(2		)
Contract liabilities, current (3)	18		18		—
Contract liabilities, non-current (4)	16		13		3
Total contract liabilities	34		31		3
Net contract assets	$	15	$	20	$	(5	)

⁽¹⁾  Included in prepaid expenses and other on the condensed consolidated balance sheets.

⁽²⁾  Included in other non-current assets 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.

For the thirteen week period ended December 28, 2019, the revenue recognized that was previously included in contract liabilities was not material.

Refer to Note 13, “Segments,” for disclosures related to the disaggregation of revenue.

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DEBT

3 Months Ended

Dec. 28, 2019

Debt Disclosure [Abstract]

DEBT

DEBT

The Company’s debt consists of the following (in millions):

	December 28, 2019
	Gross Amount		Debt Issuance Costs			Original Issue Discount or Premium			Net Amount
Short-term borrowings—trade receivable securitization facility	$	350	$	—		$	—		$	350
Term loans	$	7,524	$	(56	)	$	(16	)	$	7,452
6.50% senior subordinated notes due 2024 (2024 Notes)	1,200		(5		)	—			1,195
6.50% senior subordinated notes due 2025 (2025 Notes)	750		(3		)	3			750
6.375% senior subordinated notes due 2026 (6.375% 2026 Notes)	950		(7		)	—			943
6.875% senior subordinated notes due 2026 (6.875% 2026 Notes)	500		(5		)	(3		)	492
6.25% secured notes due 2026 (2026 Secured Notes)	4,000		(57		)	2			3,945
7.50% senior subordinated notes due 2027 (7.50% 2027 Notes)	550		(5		)	—			545
5.50% senior subordinated notes due 2027 (5.50% 2027 notes	2,650		(23		)	—			2,627
Government refundable advances	31		—			—			31
Finance lease obligations	52		—			—			52
	18,207		(161		)	(14		)	18,032
Less current portion	81		(1		)	—			80
Long-term debt	$	18,126	$	(160	)	$	(14	)	$	17,952

	September 30, 2019
	Gross Amount		Debt Issuance Costs			Original Issue Discount or Premium			Net Amount
Short-term borrowings—trade receivable securitization facility	$	350	$	—		$	—		$	350
Term loans	$	7,524	$	(58	)	$	(17	)	$	7,449
6.00% 2022 Notes	1,150		(4		)	—			1,146
6.50% 2024 Notes	1,200		(6		)	—			1,194
6.50% 2025 Notes	750		(3		)	3			750
6.375% 2026 Notes	950		(7		)	—			943
6.875% 2026 Notes	500		(6		)	(3		)	491
6.25% 2026 Secured Notes	4,000		(60		)	2			3,942
7.50% 2027 Notes	550		(5		)	—			545
Government refundable advances	39		—			—			39
Finance lease obligations	50		—			—			50
	16,713		(149		)	(15		)	16,549
Less current portion	81		(1		)	—			80
Long-term debt	$	16,632	$	(148	)	$	(15	)	$	16,469

Accrued interest, which is classified as a component of accrued liabilities, was $181.0 million and $92.6 million as of December 28, 2019 and September 30, 2019, respectively.

Issuance of Senior Subordinated Notes due 2027 – On October 29, 2019, the Company entered into a purchase agreement in connection with a private offering of $2,650 million in new 5.50% senior subordinated notes due 2027 (herein the "5.50% 2027 Notes"). The 5.50% 2027 Notes were issued pursuant to an indenture, dated as of November 13, 2019, among TransDigm, as issuer, TransDigm Group, TransDigm 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 5.50% 2027 Notes bear interest at the rate of 5.50% per annum, which accrues from November 13, 2019 and is payable in arrears on May 15th and November 15th of each year, commencing on May 15, 2020. The 5.50% 2027 Notes mature on November 15, 2027, unless earlier redeemed or repurchased, and are subject to the terms and conditions set forth in the indenture.

The Company capitalized $23.6 million and expensed $1.1 million of refinancing costs representing debt issuance costs associated with the 5.50% 2027 Notes during the thirteen week period ended December 28, 2019.

Repurchase of Senior Subordinated Notes due 2022 – On October 29, 2019, the Company announced a cash tender offer for any and all of its 2022 Notes outstanding. On November 26, 2019, the Company redeemed the principal amount of $1,150 million, plus accrued interest of approximately $25.5 million and early redemption premium of $17.3 million.

The Company wrote off $3.8 million in unamortized debt issuance costs during the thirteen week period ended December 28, 2019 in conjunction with the redemption of the 2022 Notes.

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 Electronics, which is a subsidiary of TransDigm. These obligations were assumed in connection with the Esterline acquisition and the balance was $31.3 million at December 28, 2019 and $39.2 million at September 30, 2019. The decrease in the obligation is attributable to a purchase accounting adjustment recorded in the first quarter of fiscal 2020 as permissible within the one year measurement period related to the acquisition of Esterline.

Obligations under Finance Leases - The Company leases certain buildings and equipment under finance 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 $51.9 million at December 28, 2019 and $49.9 million at September 30, 2019. Refer to Note 16, "Leases," for further disclosure on the Company's finance lease obligations.

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INTANGIBLE ASSETS (Tables)

3 Months Ended

Dec. 28, 2019

Acquired Finite-Lived Intangible Assets [Line Items]

Schedule of Acquired Intangible Assets by Major Class [Table Text Block]

Intangible Assets Subject to Amortization

Other intangible assets - net in the condensed consolidated balance sheets consist of the following (in millions):

	December 28, 2019						September 30, 2019
	Gross Carrying Amount		Accumulated Amortization		Net		Gross Carrying Amount		Accumulated Amortization		Net
Trademarks and trade names	$	957	$	—	$	957	$	956	$	—	$	956
Technology	1,840		519		1,321		1,806		496		1,310
Order backlog	93		51		42		107		45		62
Customer relationships	443		35		408		438		30		408
Other	18		9		9		17		9		8
Total	$	3,351	$	614	$	2,737	$	3,324	$	580	$	2,744

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, 2019 through December 28, 2019 (in millions):

	Power & Control			Airframe		Non- aviation			Total
Balance at September 30, 2019	$	4,121		$	3,598	$	101		$	7,820
Purchase price allocation adjustments	(106		)	106		(3		)	(3		)
Currency translation adjustment	12			16		1			29
Balance at December 28, 2019	$	4,027		$	3,720	$	99		$	7,846

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REVENUE (Tables)	3 Months Ended
	Dec. 28, 2019
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Initial Application Period Cumulative Effect Transition, Explanation of Change [Table Text Block]	.

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Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 28, 2019	Sep. 30, 2019
CURRENT ASSETS:
Cash and cash equivalents	$ 4,194	$ 1,467
Trade accounts receivable—Net	1,025	1,068
Inventories—Net	1,294	1,233
Assets held-for-sale	0	962
Prepaid expenses and other	139	135
Total current assets	6,652	4,865
PROPERTY, PLANT AND EQUIPMENT—NET	753	757
GOODWILL	7,846	7,820
OTHER INTANGIBLE ASSETS—NET	2,737	2,744
DEFERRED INCOME TAXES	13	0
OTHER	155	69
TOTAL ASSETS	18,156	16,255
CURRENT LIABILITIES:
Current portion of long-term debt	80	80
Short-term borrowings—trade receivable securitization facility	350	350
Accounts payable	265	276
Accrued liabilities	2,655	675
Liabilities held-for-sale	0	157
Total current liabilities	3,350	1,538
LONG-TERM DEBT	17,952	16,469
DEFERRED INCOME TAXES	448	441
OTHER NON-CURRENT LIABILITIES	705	691
Total liabilities	22,455	19,139
TD GROUP STOCKHOLDERS’ DEFICIT:
Common stock - $.01 par value; authorized 224,400,000 shares; issued 57,792,781 and 57,623,311 at December 28, 2019 and September 30, 2019, respectively	1	1
Additional paid-in capital	1,422	1,379
Accumulated deficit	(4,699)	(3,120)
Accumulated other comprehensive loss	(252)	(379)
Treasury stock, at cost; 4,161,326 shares at December 28, 2019 and September 30, 2019, respectively	(775)	(775)
Total TD Group stockholders’ deficit	(4,303)	(2,894)
NONCONTROLLING INTERESTS	4	10
Total stockholders' deficit	(4,299)	(2,884)
TOTAL LIABILITIES AND STOCKHOLDERS’ DEFICIT	$ 18,156	$ 16,255

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SEGMENTS (Tables)

3 Months Ended

Dec. 28, 2019

Segment Reporting [Abstract]

Net Sales by Reportable Segments

The following table presents net sales by reportable segment (in millions):

	Thirteen Week Periods Ended
	December 28, 2019		December 29, 2018
Net sales to external customers
Power & Control
Commercial OEM	$	184	$	133
Commercial Aftermarket	220		157
Defense	348		270
Total Power & Control	752		560
Airframe
Commercial OEM	230		133
Commercial Aftermarket	245		177
Defense	199		89
Total Airframe	674		399
Total Non-aviation	39		34
	$	1,465	$	993

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 millions):

	Thirteen Week Periods Ended
	December 28, 2019		December 29, 2018
EBITDA As Defined
Power & Control	$	385	$	300
Airframe	305		191
Non-aviation	13		11
Total segment EBITDA As Defined	703		502
Less: Unallocated corporate expenses	22		15
Total Company EBITDA As Defined	681		487
Depreciation and amortization expense	69		35
Interest expense - net	248		172
Acquisition-related costs	7		12
Stock compensation expense	26		18
Refinancing costs	22		—
Other, net	16		—
Income from continuing operations before income taxes	$	293	$	250

Total Assets by Segment

The following table presents total assets by segment (in millions):

	December 28, 2019		September 30, 2019
Total assets
Power & Control	$	7,070	$	7,037
Airframe	6,838		6,672
Non-aviation	262		262
Corporate	3,986		1,322
Assets of discontinued operations	—		962
	$	18,156	$	16,255

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Condensed Consolidated Statement of Changes in Stockholders' Deficit - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Noncontrolling Interest
NONCONTROLLING INTERESTS							$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total stockholders' deficit	$ (1,808)
BALANCE (in shares) at Sep. 30, 2018		56,895,686
BALANCE (in shares) at Sep. 30, 2018						(4,161,326)
BALANCE at Sep. 30, 2018		$ 1	$ 1,209	$ (2,247)	$ 4	$ (775)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividend Equivalent Payments On Certain Stock Options	(3)			(3)
Cumulative Effect on Retained Earnings, Net of Tax | ASC 606 and ASU 2016-06	3			3
Compensation expense recognized for employee stock options	16		16
Exercise of employee stock options		109,695
Exercise of employee stock options	14	$ 0	14
Net income attributable to TD Group	(196)			196
Foreign currency translation adjustments, net of tax	(11)				(11)
Unrealized (loss) gain on derivatives, net of tax	(74)				(74)
Pensions and other postretirement benefit adjustments, net of tax	0
BALANCE (in shares) at Dec. 29, 2018		57,005,381
BALANCE (in shares) at Dec. 29, 2018						(4,161,326)
BALANCE at Dec. 29, 2018		$ 1	1,239	(2,051)	(81)	$ (775)
NONCONTROLLING INTERESTS							0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total stockholders' deficit	(1,667)
NONCONTROLLING INTERESTS	10						10
Total stockholders' deficit	$ (2,884)
BALANCE (in shares) at Sep. 30, 2019	57,623,311	57,623,311
BALANCE (in shares) at Sep. 30, 2019	(4,161,326)					(4,161,326)
BALANCE at Sep. 30, 2019	$ (2,894)	$ 1	1,379	(3,120)	(379)	$ (775)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity of noncontrolling interested divested	(6)						(6)
Dividend Equivalent Payments On Certain Stock Options	(19)			(19)
Dividend Equivalent Declared On Certain Stock Options	(1,864)			(1,864)
Compensation expense recognized for employee stock options	23		23
Exercise of employee stock options		169,470
Exercise of employee stock options	20		20
Net income attributable to TD Group	(304)			304
Foreign currency translation adjustments, net of tax	98				98
Unrealized (loss) gain on derivatives, net of tax	23				23
Pensions and other postretirement benefit adjustments, net of tax	$ 6				6
BALANCE (in shares) at Dec. 28, 2019	57,792,781	57,792,781
BALANCE (in shares) at Dec. 28, 2019	(4,161,326)					(4,161,326)
BALANCE at Dec. 28, 2019	$ (4,303)	$ 1	$ 1,422	$ (4,699)	$ (252)	$ (775)
NONCONTROLLING INTERESTS	4						$ 4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total stockholders' deficit	$ (4,299)

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INCOME TAXES - Narratives (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Sep. 30, 2019
Effective income tax rate	20.10%	21.50%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Unrecognized tax benefits	$ 36.6		$ 36.5
Tax rate effect	31.9		$ 31.4
Reduction in tax position in next 12 months	$ 1.5

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REVENUE Tables (Details) - USD ($) $ in Millions		3 Months Ended
		Dec. 28, 2019	Sep. 30, 2019
Contract with Customer, Asset, Net, Current	[1]	$ 43	$ 44
Contract with Customer, Asset, Current, Increase or Decrease	[1]	(1)
Inventories—Net		1,294	1,233
DEFERRED INCOME TAXES		448	441
Accumulated deficit		(4,699)	(3,120)
Contract with Customer, Asset, Net, Noncurrent	[2]	6	7
Contract with customer, Asset, Non-current, Increase or Decrease	[2]	(1)
Contract with Customer, Asset, after Allowance for Credit Loss		49	51
Contract assets, Increase or Decrease		(2)
Contract with Customer, Liability, Current	[3]	18	18
Contract liabilities, Current, Increase or Decrease	[3]	0
Contract with Customer, Liability, Noncurrent	[4]	16	13
Contract liabilities, Non-current, Increase or Decrease	[4]	3
Contract with Customer, Liability		34	31
Contract Liabilities, Increase or Decrease		3
Net Contract Asset		15	$ 20
Net Contract Asset, Increase or Decrease		$ (5)

[1] Included in prepaid expenses and other on the condensed consolidated balance sheets.

[2] Included in other non-current assets 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.

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INTANGIBLE ASSETS - Summary of changes in carrying value of Goodwill (Details) $ in Millions	3 Months Ended
	Dec. 28, 2019 USD ($)
Goodwill [Roll Forward]
Balance at beginning of period	$ 7,820
Purchase price allocation adjustments	(3)
Currency translation adjustment	29
Balance at end of period	7,846
Power & Control
Goodwill [Roll Forward]
Balance at beginning of period	4,121
Purchase price allocation adjustments	(106)
Currency translation adjustment	12
Balance at end of period	4,027
Airframe
Goodwill [Roll Forward]
Balance at beginning of period	3,598
Purchase price allocation adjustments	106
Currency translation adjustment	16
Balance at end of period	3,720
Non- aviation
Goodwill [Roll Forward]
Balance at beginning of period	101
Purchase price allocation adjustments	(3)
Currency translation adjustment	1
Balance at end of period	$ 99

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DISCONTINUED OPERATIONS Narrative (Details) - USD ($) $ in Millions		3 Months Ended		12 Months Ended
	Sep. 20, 2019	Dec. 28, 2019	Dec. 29, 2018	Sep. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX		$ 71	$ 0
Disposal Group, Including Discontinued Operation, Assets, Current		0		$ 962
Disposal Group, Including Discontinued Operation, Liabilities, Current		0		157
Souriau Sunbank [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax		62
Divestiture, Sale Price				920
INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX		71
Disposal Group, Including Discontinued Operation, Assets, Current				962
Disposal Group, Including Discontinued Operation, Liabilities, Current				$ 157
Income (loss) from discontinued operations before gain or loss on disposal net of tax		$ 9
Esterline Interface Technology Group [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Divestiture, Sale Price	$ 190

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LEASES Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Millions	Dec. 28, 2019	Oct. 01, 2019
Leases [Abstract]
Operating Lease, Weighted Average Remaining Lease Term	6 years 6 months
Operating Lease, Right-of-Use Asset	$ 102	$ 99
Operating Lease, Liability, Current	21
Operating Lease, Liability, Noncurrent	87
Operating Lease, Liability	108	$ 105
Finance Lease, Right-of-Use Asset	70
Finance Lease, Liability, Current	1
Finance Lease, Liability, Noncurrent	51
Finance Lease, Liability	$ 52
Finance Lease, Weighted Average Remaining Lease Term	18 years 1 month 6 days
Operating Lease, Weighted Average Discount Rate, Percent	6.20%
Finance Lease, Weighted Average Discount Rate, Percent	7.90%

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SUBSEQUENT EVENTS Subsequent Events (Details) $ / shares in Units, $ in Billions	3 Months Ended
	Dec. 28, 2019 USD ($) $ / shares
Subsequent Event [Line Items]
Dividends, Cash	$ 1.9
Dividends Payable, Amount Per Share | $ / shares	$ 32.50
Dividends Payable, Current	$ 1.9

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EARNINGS PER SHARE (TWO-CLASS METHOD)

3 Months Ended

Dec. 28, 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 millions, except per share data) using the two-class method:

	Thirteen Week Periods Ended
	December 28, 2019			December 29, 2018
Numerator for earnings per share:
Income from continuing operations	$	234		$	196
Less: Net income attributable to noncontrolling interests	(1		)	—
Net income from continuing operations attributable to TD Group	233			196
Less: Special dividends declared or paid on participating securities	(185		)	(24		)
	48			172
Income from discontinued operations, net of tax	71			—
Net income applicable to TD Group common stockholders - basic and diluted	$	119		$	172
Denominator for basic and diluted earnings per share under the two-class method:
Weighted-average common shares outstanding	53.6			52.8
Vested options deemed participating securities	3.8			3.5
Total shares for basic and diluted earnings per share	57.4			56.3
Earnings per share from continuing operations - basic and diluted	$	0.83		$	3.05
Earnings per share from discontinued operations - basic and diluted	1.24			—
Earnings per share	$	2.07		$	3.05

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INCOME TAXES

3 Months Ended

Dec. 28, 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 December 28, 2019 and December 29, 2018, the effective income tax rate was 20.1% and 21.5%, respectively. The Company's lower

effective tax rate for the thirteen week period ended December 28, 2019 was primarily due to a discrete benefit recognized for excess tax benefits for share-based payments during the thirteen week period ended December 28, 2019, partially offset by an increase in the valuation allowance associated with our net interest expense limitation under IRC Section 163(j). The Company's effective tax rate for the thirteen week period ended December 28, 2019 was lower than the Federal statutory rate of 21% primarily due to the discrete benefit recognized for excess tax benefits for share-based payments and the benefit associated with the deduction for foreign-derived intangible income (FDII), partially offset by the increase in the valuation allowance attributed to our net interest expense limitation under IRC Section 163(j), and our foreign earnings taxed at rates higher than the U.S. statutory rate. The Company’s effective tax rate for the thirteen week period ended December 29, 2018 was slightly higher than the Federal statutory tax rate primarily resulting from the valuation allowance associated with our net interest expense limitation under IRC Section 163(j), foreign earnings taxed at rates higher than the U.S. statutory rate, partially offset by the benefit associated with FDII.

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 examination for its federal income taxes in the U.S. for fiscal 2016, in Belgium for fiscal years 2016 through 2018, in Canada for fiscal years 2013 through 2015, in France for fiscal years 2015 through 2018, and in Germany for fiscal years 2014 through 2017. The Company is no longer subject to U.S. federal examinations for years before fiscal year 2015. The Company is subject to state income tax examinations for fiscal years 2009 and later.

At December 28, 2019 and September 30, 2019, TD Group had $36.6 million and $36.5 million, respectively, in unrecognized tax benefits, the recognition of which would have an effect of approximately $31.9 million and $31.4 million on the effective tax rate at December 28, 2019 and September 30, 2019, respectively. The Company believes the tax positions that comprise the unrecognized tax benefits will be reduced by approximately $1.5 million over the next 12 months. The Company recognizes accrued interest and penalties related to unrecognized tax benefits as a component of income tax expense.

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Condensed Consolidated Balance Sheets Parenthetical - $ / shares	Dec. 28, 2019	Sep. 30, 2019
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	57,792,781	57,623,311
Treasury Stock, Shares	4,161,326	4,161,326

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DERIVATIVES AND HEDGING ACTIVITIES (Tables)

3 Months Ended

Dec. 28, 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 (in millions)	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

	December 28, 2019					September 30, 2019
	Asset		Liability			Asset		Liability
Interest rate cap agreements	$	1	$	—		$	1	$	—
Interest rate swap agreements (1)	—		(183		)	—		(216		)
Net derivatives as classified in the balance sheet (2)	$	1	$	(183	)	$	1	$	(216	)

⁽¹⁾  The decrease in the interest rate swap liability is primarily attributable to a upward trend in the LIBO rate during the first quarter of fiscal 2020.

⁽²⁾ 

Refer to Note 11, "Fair Value Measurements," for the condensed consolidated balance sheet classification of our interest rate swap and cap agreements.

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Condensed Consolidated Statement of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
OPERATING ACTIVITIES:
Net Income	$ 305	$ 196
Net income from discontinued operations	(71)	0
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	29	15
Amortization of intangible assets	40	20
Amortization of debt issuance costs, original issue discount and premium	8	6
Amortization of inventory step-up	0	4
Loss contracts amortization	(11)	(2)
Refinancing costs	22	0
Non-cash equity compensation	26	18
Deferred income taxes	(2)	0
Changes in assets/liabilities, net of effects from acquisitions of businesses:
Trade accounts receivable	51	45
Inventories	(69)	(29)
Income taxes receivable/payable	30	52
Other assets	(5)	(9)
Accounts payable	(14)	3
Accrued interest	88	21
Accrued and other liabilities	6	(10)
Net Cash Provided by (Used in) Operating Activities	433	330
INVESTING ACTIVITIES:
Capital expenditures	(27)	(24)
Payments made in connection with acquisitions, net of cash acquired	0	(29)
Proceeds in connection with the sale of discontinued operations, net	904	0
Net Cash Provided by (Used in) Investing Activities	877	(53)
FINANCING ACTIVITIES:
Proceeds from exercise of stock options	20	14
Dividend equivalent payments	(64)	(24)
Redemption of senior subordinated notes due 2022, net	(1,168)	0
Proceeds from 5.50% senior subordinated notes due 2027, net	2,625	0
Other, net	1	0
Net Cash Provided by (Used in) Financing Activities	1,414	(10)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	3	(3)
NET INCREASE IN CASH AND CASH EQUIVALENTS	2,727	264
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	1,467	2,073
CASH AND CASH EQUIVALENTS, END OF PERIOD	4,194	2,337
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid during the period for interest	155	154
Cash paid during the period for income taxes, net of refunds	$ 29	$ 2

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INVENTORIES (Tables)

3 Months Ended

Dec. 28, 2019

Inventory Disclosure [Abstract]

Inventories

Inventories consist of the following (in millions):

	December 28, 2019			September 30, 2019
Raw materials and purchased component parts	$	858		$	805
Work-in-progress	373			360
Finished goods	197			192
Total	1,428			1,357
Reserves for excess and obsolete inventory	(134		)	(124		)
Inventories - Net	$	1,294		$	1,233

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ACQUISITIONS AND DIVESTITURES (Tables) - Esterline [Member]

3 Months Ended

Dec. 28, 2019

Business Acquisition [Line Items]

Business Acquisition, Pro Forma Information [Table Text Block]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

The preliminary allocation of the fair value of the Esterline acquisition as of the acquisition date of March 14, 2019 is summarized in the table below (presented in millions).

Assets acquired:
Trade accounts receivable	$	387
Inventories	589
Prepaid expenses and other	422
Property, plant, and equipment	469
Other intangible assets	1,300
Goodwill	2,190
Other	22
Total assets acquired	5,379
Liabilities assumed:
Accounts payable	146
Accrued liabilities	715
Other non-current liabilities	594
Total liabilities assumed	1,455
Net assets acquired	$	3,924

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EARNINGS PER SHARE (TWO-CLASS METHOD) - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Earnings Per Share [Abstract]
Income from continuing operations	$ 234	$ 196
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(1)	0
Net income from continuing operations attributable to TD Group	233	196
Numerator for earnings per share:
Less: Special dividends declared or paid on participating securities	(185)	(24)
Net Income Loss Attributable to Continuing Operations Available To Common Stockholders Basic And Vested Options Deemed Participating Securities	48	172
INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX	71	0
Net income applicable to TD Group common stockholders - basic and diluted	$ 119	$ 172
Denominator for basic and diluted earnings per share under the two-class method, in shares:
Weighted-average common shares outstanding	53.6	52.8
Vested options deemed participating securities	3.8	3.5
Basic and diluted (in shares)	57.4	56.3
Earnings per share from continuing operations - basic and diluted	$ 0.83	$ 3.05
Earnings per share from discontinued operations - basic and diluted	1.24	0
Basic and diluted earnings per share (in dollars per share)	$ 2.07	$ 3.05

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INTANGIBLE ASSETS - Narratives (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Finite-Lived Intangible Assets [Line Items]
Aggregate Amortization of Intangible Assets	$ 39,900	$ 20,000
Amortization of intangible assets	40,000	$ 20,000
Estimated Amortization Expense, 2020	171,900
Estimated Amortization Expense, 2021	115,200
Estimated Amortization Expense, 2022	114,700
Estimated Amortization Expense, 2023	114,700
Estimated Amortization Expense, 2024	$ 114,700

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FAIR VALUE MEASUREMENTS - Carrying Amounts and Fair Values of Financial Instruments (Detail) - USD ($) $ in Millions		Dec. 28, 2019	Sep. 30, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents		$ 4,194.0	$ 1,467.0
Short-term borrowings—trade receivable securitization facility		350.0	350.0
Long-term Debt		18,032.0	16,549.0
Other Noncurrent Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest Rate Cash Flow Hedge Asset at Carrying Value	[1]	1.0	1.0
Prepaid Expenses and Other Current Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign Currency Contract, Asset	[2]	1.0	0.0
Accrued Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign Currency Contract, Asset	[3]	4.0	6.0
Interest rate swap agreements	[3]	14.0	13.0
Other Noncurrent Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap agreements	[4]	169.0	202.0
Term loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	7,452.0	7,449.0
Government Refundable Advances [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt		31.0	39.0
Long-term debt, including current portion, Fair Value		31.0	39.0
Government refundable advances		31.3	39.2
Capital Lease Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt		52.0	50.0
Capital Lease Obligations		51.9	49.9
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, Fair Value		4,194.0	1,467.0
Level 2 | Other Noncurrent Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate cap agreements, Fair Value	[1]	1.0	1.0
Level 2 | Prepaid Expenses and Other Current Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign Currency Contract, Asset	[2]	1.0
Level 2 | Accrued Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign Currency Contract, Asset	[3]	4.0	6.0
Interest rate swap agreements, Fair Value	[3]	14.0	13.0
Level 2 | Other Noncurrent Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap agreements, Fair Value	[4]	169.0	202.0
Level 2 | Term loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value	[5]	7,509.0	7,478.0
Level 2 | Capital Lease Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value		52.0	50.0
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]	0.0	1,146.0
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	[5]	0.0	1,167.0
6.50% senior subordinated notes due 2024 (2024 Notes) | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	1,195.0	1,194.0
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	[5]	1,236.0	1,239.0
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]	750.0	750.0
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	[5]	781.0	782.0
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]	943.0	943.0
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	[5]	1,007.0	999.0
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]	492.0	491.0
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	[5]	536.0	535.0
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]	3,945.0	3,942.0
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	[5]	4,325.0	4,290.0
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]	545.0	545.0
Long-term debt, including current portion, Fair Value	[5]		595.0
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	[5]	601.0
Senior Subordinated Notes $2650M Due 2027 5.50% [Member] | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	[5]	2,627.0	0.0
Long-term debt, including current portion, Fair Value	[5]		0.0
Senior Subordinated Notes $2650M Due 2027 5.50% [Member] | Level 1 | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion, Fair Value	[5]	2,686.0
Asset-backed Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings—trade receivable securitization facility	[5]	350.0	350.0
Asset-backed Securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings - trade receivable securitization facility, Fair Value	[5]	$ 350.0	$ 350.0

[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.

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COMMITMENTS AND CONTINGENCIES (Details) $ in Millions	Dec. 28, 2019 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Insurance deductible	$ 1

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LEASES Supplemental Cash Flow Information Related To Leases (Details) $ in Millions	3 Months Ended
	Dec. 28, 2019 USD ($)
Leases [Abstract]
Operating Lease, Payments	$ 7
Finance Lease, Principal Payments	1
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 10

XML

SUPPLEMENTAL GUARANTOR INFORMATION Narrative (Details)	Dec. 28, 2019
Condensed Financial Statements, Captions [Line Items]
Percentage of ownership in subsidiary	100.00%

XML

RECENT ACCOUNTING PRONOUNCEMENTS - Narratives (Details) - USD ($) $ in Millions	Dec. 28, 2019	Oct. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating Lease, Right-of-Use Asset	$ 102	$ 99
Operating Lease, Liability	$ 108	$ 105

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SUPPLEMENTAL GUARANTOR INFORMATION (Tables)

3 Months Ended

Dec. 28, 2019

Dec. 29, 2018

Condensed Financial Information Disclosure [Abstract]

Supplemental Condensed Consolidating Balance Sheet

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING BALANCE SHEET

AS OF DECEMBER 28, 2019

(Amounts in millions)

	TransDigm Group			TransDigm Inc.			TransDigm UK		Subsidiary Guarantors			Non- Guarantor Subsidiaries		Eliminations			Total Consolidated
ASSETS
CURRENT ASSETS:
Cash and cash equivalents	$	—		$	3,087		$	1	$	(15	)	$	1,121	$	—		$	4,194
Trade accounts receivable - Net	—			—			—		161			864		—			1,025
Inventories - Net	—			55			—		899			356		(16		)	1,294
Prepaid expenses and other	—			29			—		52			58		—			139
Total current assets	—			3,171			1		1,097			2,399		(16		)	6,652
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	(4,303		)	15,750			974		17,542			5,957		(35,920		)	—
PROPERTY, PLANT AND  EQUIPMENT - NET	—			15			—		520			218		—			753
GOODWILL	—			83			—		5,895			1,868		—			7,846
OTHER INTANGIBLE ASSETS - NET	—			25			—		2,025			687		—			2,737
DEFERRED INCOME TAXES	—			—			—		—			13		—			13
OTHER	—			20			—		92			43		—			155
TOTAL ASSETS	$	(4,303	)	$	19,064		$	975	$	27,171		$	11,185	$	(35,936	)	$	18,156
LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY
CURRENT LIABILITIES:
Current portion of long-term debt	$	—		$	76		$	—	$	1		$	3	$	—		$	80
Short-term borrowings - trade receivable securitization facility	—			—			—		—			350		—			350
Accounts payable	—			17			—		148			100		—			265
Accrued liabilities	—			2,158			4		240			253		—			2,655
Total current liabilities	—			2,251			4		389			706		—			3,350
LONG-TERM DEBT	—			17,383			492		42			35		—			17,952
DEFERRED INCOME TAXES	—			—			—		350			98		—			448
OTHER NON-CURRENT LIABILITIES	—			273			—		265			167		—			705
Total liabilities	—			19,907			496		1,046			1,006		—			22,455
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	(4,303		)	(843		)	479		26,125			10,175		(35,936		)	(4,303		)
NONCONTROLLING INTERESTS	—			—			—		—			4		—			4
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	$	(4,303	)	$	19,064		$	975	$	27,171		$	11,185	$	(35,936	)	$	18,156

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING BALANCE SHEET

AS OF DECEMBER 28, 2019

(Amounts in millions)

	TransDigm Group			TransDigm Inc.			TransDigm UK		Subsidiary Guarantors			Non- Guarantor Subsidiaries		Eliminations			Total Consolidated
ASSETS
CURRENT ASSETS:
Cash and cash equivalents	$	—		$	3,087		$	1	$	(15	)	$	1,121	$	—		$	4,194
Trade accounts receivable - Net	—			—			—		161			864		—			1,025
Inventories - Net	—			55			—		899			356		(16		)	1,294
Prepaid expenses and other	—			29			—		52			58		—			139
Total current assets	—			3,171			1		1,097			2,399		(16		)	6,652
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	(4,303		)	15,750			974		17,542			5,957		(35,920		)	—
PROPERTY, PLANT AND  EQUIPMENT - NET	—			15			—		520			218		—			753
GOODWILL	—			83			—		5,895			1,868		—			7,846
OTHER INTANGIBLE ASSETS - NET	—			25			—		2,025			687		—			2,737
DEFERRED INCOME TAXES	—			—			—		—			13		—			13
OTHER	—			20			—		92			43		—			155
TOTAL ASSETS	$	(4,303	)	$	19,064		$	975	$	27,171		$	11,185	$	(35,936	)	$	18,156
LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY
CURRENT LIABILITIES:
Current portion of long-term debt	$	—		$	76		$	—	$	1		$	3	$	—		$	80
Short-term borrowings - trade receivable securitization facility	—			—			—		—			350		—			350
Accounts payable	—			17			—		148			100		—			265
Accrued liabilities	—			2,158			4		240			253		—			2,655
Total current liabilities	—			2,251			4		389			706		—			3,350
LONG-TERM DEBT	—			17,383			492		42			35		—			17,952
DEFERRED INCOME TAXES	—			—			—		350			98		—			448
OTHER NON-CURRENT LIABILITIES	—			273			—		265			167		—			705
Total liabilities	—			19,907			496		1,046			1,006		—			22,455
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	(4,303		)	(843		)	479		26,125			10,175		(35,936		)	(4,303		)
NONCONTROLLING INTERESTS	—			—			—		—			4		—			4
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	$	(4,303	)	$	19,064		$	975	$	27,171		$	11,185	$	(35,936	)	$	18,156

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING BALANCE SHEET

AS OF SEPTEMBER 30, 2019

(Amounts in millions)

	TransDigm Group			TransDigm Inc.			TransDigm UK		Subsidiary Guarantors			Non- Guarantor Subsidiaries		Eliminations			Total Consolidated
ASSETS
CURRENT ASSETS:
Cash and cash equivalents	$	—		$	1,092		$	—	$	(12	)	$	387	$	—		$	1,467
Trade accounts receivable - Net	—			—			—		172			896		—			1,068
Inventories - Net	—			52			—		880			316		(15		)	1,233
Assets held-for-sale	—			—			—		206			756		—			962
Prepaid expenses and other	—			27			—		45			63		—			135
Total current assets	—			1,171			—		1,291			2,418		(15		)	4,865
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	(2,894		)	14,729			975		16,373			6,898		(36,081		)	—
PROPERTY, PLANT AND EQUIPMENT - NET	—			17			—		513			227		—			757
GOODWILL	—			83			—		5,544			2,193		—			7,820
OTHER INTANGIBLE ASSETS - NET	—			25			—		2,064			655		—			2,744
OTHER	—			6			—		35			28		—			69
TOTAL ASSETS	$	(2,894	)	$	16,031		$	975	$	25,820		$	12,419	$	(36,096	)	$	16,255
LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY
CURRENT LIABILITIES:
Current portion of long-term debt	$	—		$	76		$	—	$	1		$	3	$	—		$	80
Short-term borrowings - trade receivable securitization facility	—			—			—		—			350		—			350
Accounts payable	—			17			—		160			99		—			276
Accrued liabilities	—			215			12		237			211		—			675
Liabilities held-for-sale	—			—			—		22			135		—			157
Total current liabilities	—			308			12		420			798		—			1,538
LONG-TERM DEBT	—			15,893			492		49			35		—			16,469
DEFERRED INCOME TAXES	—			—			—		347			94		—			441
OTHER NON-CURRENT LIABILITIES	—			315			—		233			143		—			691
Total liabilities	—			16,516			504		1,049			1,070		—			19,139
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	(2,894		)	(485		)	471		24,771			11,339		(36,096		)	(2,894		)
NONCONTROLLING INTERESTS	—			—			—		—			10		—			10
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	$	(2,894	)	$	16,031		$	975	$	25,820		$	12,419	$	(36,096	)	$	16,255

Supplemental Condensed Consolidating Income Statement

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING STATEMENT OF INCOME AND COMPREHENSIVE INCOME

FOR THE THIRTEEN WEEK PERIOD ENDED DECEMBER 28, 2019

(Amounts in millions)

	TransDigm Group			TransDigm Inc.			TransDigm UK			Subsidiary Guarantors			Non- Guarantor Subsidiaries			Eliminations			Total Consolidated
NET SALES	$	—		$	45		$	—		$	1,130		$	347		$	(57	)	$	1,465
COST OF SALES	—			25			—			480			216			(57		)	664
GROSS PROFIT	—			20			—			650			131			—			801
SELLING AND ADMINISTRATIVE EXPENSES	—			54			—			97			50			—			201
AMORTIZATION OF INTANGIBLE ASSETS	—			—			—			30			10			—			40
(LOSS) INCOME FROM OPERATIONS	—			(34		)	—			523			71			—			560
INTEREST EXPENSE (INCOME) - NET	—			250			9			(5		)	(6		)	—			248
REFINANCING COSTS	—			22			—			—			—			—			22
OTHER (INCOME) EXPENSE	—			(3		)	(18		)	2			16			—			(3		)
EQUITY IN INCOME OF SUBSIDIARIES	(304		)	(493		)	—			—			—			797			—
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	304			190			9			526			61			(797		)	293
INCOME TAX PROVISION	—			—			—			50			9			—			59
INCOME FROM CONTINUING OPERATIONS	304			190			9			476			52			(797		)	234
INCOME (LOSS) FROM DISCONTINUED OPERATIONS, NET OF TAX	—			114			—			—			(43		)	—			71
NET INCOME	304			304			9			476			9			(797		)	305
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—			—			—			—			(1		)	—			(1		)
NET INCOME ATTRIBUTABLE TO TD GROUP	$	304		$	304		$	9		$	476		$	8		$	(797	)	$	304
OTHER COMPREHENSIVE INCOME, NET OF TAX	127			43			—			5			132			(180		)	127
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO TD GROUP	$	431		$	347		$	9		$	481		$	140		$	(977	)	$	431

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING STATEMENT OF INCOME AND COMPREHENSIVE INCOME

FOR THE THIRTEEN WEEK PERIOD ENDED DECEMBER 28, 2019

(Amounts in millions)

	TransDigm Group			TransDigm Inc.			TransDigm UK			Subsidiary Guarantors			Non- Guarantor Subsidiaries			Eliminations			Total Consolidated
NET SALES	$	—		$	45		$	—		$	1,130		$	347		$	(57	)	$	1,465
COST OF SALES	—			25			—			480			216			(57		)	664
GROSS PROFIT	—			20			—			650			131			—			801
SELLING AND ADMINISTRATIVE EXPENSES	—			54			—			97			50			—			201
AMORTIZATION OF INTANGIBLE ASSETS	—			—			—			30			10			—			40
(LOSS) INCOME FROM OPERATIONS	—			(34		)	—			523			71			—			560
INTEREST EXPENSE (INCOME) - NET	—			250			9			(5		)	(6		)	—			248
REFINANCING COSTS	—			22			—			—			—			—			22
OTHER (INCOME) EXPENSE	—			(3		)	(18		)	2			16			—			(3		)
EQUITY IN INCOME OF SUBSIDIARIES	(304		)	(493		)	—			—			—			797			—
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	304			190			9			526			61			(797		)	293
INCOME TAX PROVISION	—			—			—			50			9			—			59
INCOME FROM CONTINUING OPERATIONS	304			190			9			476			52			(797		)	234
INCOME (LOSS) FROM DISCONTINUED OPERATIONS, NET OF TAX	—			114			—			—			(43		)	—			71
NET INCOME	304			304			9			476			9			(797		)	305
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—			—			—			—			(1		)	—			(1		)
NET INCOME ATTRIBUTABLE TO TD GROUP	$	304		$	304		$	9		$	476		$	8		$	(797	)	$	304
OTHER COMPREHENSIVE INCOME, NET OF TAX	127			43			—			5			132			(180		)	127
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO TD GROUP	$	431		$	347		$	9		$	481		$	140		$	(977	)	$	431

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING STATEMENT OF INCOME AND COMPREHENSIVE INCOME

FOR THE THIRTEEN WEEK PERIOD ENDED DECEMBER 29, 2018

(Amounts in millions)

	TransDigm Group			TransDigm Inc.			TransDigm UK			Subsidiary Guarantors		Non- Guarantor Subsidiaries			Eliminations			Total Consolidated
NET SALES	$	—		$	41		$	—		$	809	$	162		$	(19	)	$	993
COST OF SALES	—			23			—			338		87			(19		)	429
GROSS PROFIT	—			18			—			471		75			—			564
SELLING AND ADMINISTRATIVE EXPENSES	—			41			—			64		17			—			122
AMORTIZATION OF INTANGIBLE ASSETS	—			—			—			18		2			—			20
(LOSS) INCOME FROM OPERATIONS	—			(23		)	—			389		56			—			422
INTEREST EXPENSE (INCOME) - NET	—			177			5			—		(10		)	—			172
EQUITY IN INCOME OF SUBSIDIARIES	(196		)	(325		)	—			—		—			521			—
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	196			125			(5		)	389		66			(521		)	250
INCOME TAX PROVISION	—			(71		)	—			119		6			—			54
NET INCOME (LOSS) ATTRIBUTABLE TO TD GROUP	$	196		$	196		$	(5	)	$	270	$	60		$	(521	)	$	196
OTHER COMPREHENSIVE (LOSS) INCOME, NET OF TAX	(85		)	(74		)	—			12		(13		)	75			(85		)
TOTAL COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO TD GROUP	$	111		$	122		$	(5	)	$	282	$	47		$	(446	)	$	111

Supplemental Condensed Consolidating Cash Flow Statement

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE THIRTEEN WEEK PERIOD ENDED DECEMBER 28, 2019

(Amounts in millions)

	TransDigm Group			TransDigm Inc.			TransDigm UK			Subsidiary Guarantors			Non- Guarantor Subsidiaries			Eliminations			Total Consolidated
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	$	—		$	(80	)	$	(8	)	$	448		$	72		$	1		$	433
INVESTING ACTIVITIES:
Capital expenditures	—			(1		)	—			(22		)	(4		)	—			(27		)
Proceeds in connection with sale of discontinued operations, net	—			904			—			—			—			—			904
Net cash provided by (used in) investing activities	—			903			—			(22		)	(4		)	—			877
FINANCING ACTIVITIES:
Intercompany activities	44			(285		)	9			(429		)	662			(1		)	—
Proceeds from exercise of stock options	20			—			—			—			—			—			20
Dividend equivalent payments	(64		)	—			—			—			—			—			(64		)
Redemption of senior subordinated notes due 2022, net	—			(1,168		)	—			—			—			—			(1,168		)
Proceeds from 5.50% senior subordinated notes due 2027, net	—			2,625			—			—			—			—			2,625
Other, net	—			—			—			—			1			—			1
Net cash provided by (used in) financing activities	—			1,172			9			(429		)	663			(1		)	1,414
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	—			—			—			—			3			—			3
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	—			1,995			1			(3		)	734			—			2,727
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	—			1,092			—			(12		)	387			—			1,467
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	—		$	3,087		$	1		$	(15	)	$	1,121		$	—		$	4,194

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE THIRTEEN WEEK PERIOD ENDED DECEMBER 28, 2019

(Amounts in millions)

	TransDigm Group			TransDigm Inc.			TransDigm UK			Subsidiary Guarantors			Non- Guarantor Subsidiaries			Eliminations			Total Consolidated
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	$	—		$	(80	)	$	(8	)	$	448		$	72		$	1		$	433
INVESTING ACTIVITIES:
Capital expenditures	—			(1		)	—			(22		)	(4		)	—			(27		)
Proceeds in connection with sale of discontinued operations, net	—			904			—			—			—			—			904
Net cash provided by (used in) investing activities	—			903			—			(22		)	(4		)	—			877
FINANCING ACTIVITIES:
Intercompany activities	44			(285		)	9			(429		)	662			(1		)	—
Proceeds from exercise of stock options	20			—			—			—			—			—			20
Dividend equivalent payments	(64		)	—			—			—			—			—			(64		)
Redemption of senior subordinated notes due 2022, net	—			(1,168		)	—			—			—			—			(1,168		)
Proceeds from 5.50% senior subordinated notes due 2027, net	—			2,625			—			—			—			—			2,625
Other, net	—			—			—			—			1			—			1
Net cash provided by (used in) financing activities	—			1,172			9			(429		)	663			(1		)	1,414
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	—			—			—			—			3			—			3
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	—			1,995			1			(3		)	734			—			2,727
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	—			1,092			—			(12		)	387			—			1,467
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	—		$	3,087		$	1		$	(15	)	$	1,121		$	—		$	4,194

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE THIRTEEN WEEK PERIOD ENDED DECEMBER 29, 2018

(Amounts in millions)

	TransDigm Group			TransDigm Inc.			TransDigm UK		Subsidiary Guarantors			Non- Guarantor Subsidiaries			Eliminations		Total Consolidated
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	$	—		$	(19	)	$	—	$	285		$	64		$	—	$	330
INVESTING ACTIVITIES:
Capital expenditures	—			—			—		(20		)	(4		)	—		(24		)
Payments made in connection with acquisitions, net of cash acquired	—			—			—		(29		)	—			—		(29		)
Net cash used in investing activities	—			—			—		(49		)	(4		)	—		(53		)
FINANCING ACTIVITIES:
Intercompany activities	16			430			—		(235		)	(211		)	—		—
Proceeds from exercise of stock options	14			—			—		—			—			—		14
Dividend equivalent payments	(24		)	—			—		—			—			—		(24		)
Net cash provided by (used in) financing activities	6			430			—		(235		)	(211		)	—		(10		)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	—			—			—		—			(3		)	—		(3		)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	6			411			—		1			(154		)	—		264
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	—			1,821			—		(2		)	254			—		2,073
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	6		$	2,232		$	—	$	(1	)	$	100		$	—	$	2,337

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RETIREMENT BENEFITS (Tables)

3 Months Ended

Dec. 28, 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 net periodic pension cost for the Company's defined benefit plans were as follows (in millions):

	Thirteen Week Periods Ended
	December 28, 2019						December 29, 2018
	U.S. Pension Plans			Non-U.S. Pension Plans			U.S. Pension Plans			Non-U.S. Pension Plans
Service cost	$	2		$	1		$	1		$	1
Interest cost	3			1			2			1
Expected return on plan assets	(5		)	(1		)	(3		)	(1		)
Amortization of prior service cost	—			—			—			—
Amortization of actuarial (gain) loss	—			—			—			—
Net periodic pension cost	$	—		$	1		$	—		$	1

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SEGMENTS - Narratives (Details)	3 Months Ended
	Dec. 28, 2019 Segment
Segment Reporting [Abstract]
Number of reporting segments	3

XML

RETIREMENT BENEFITS Tables (Details) - Pension Plan [Member] - USD ($) $ in Thousands	3 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
UNITED STATES
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Service Cost	$ 2,000	$ 1,000
Defined Benefit Plan, Interest Cost	3,000	2,000
Defined Benefit Plan, Expected Return (Loss) on Plan Assets	(5,000)	(3,000)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment	0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	0	0
Foreign Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Service Cost	1,000	1,000
Defined Benefit Plan, Interest Cost	1,000	1,000
Defined Benefit Plan, Expected Return (Loss) on Plan Assets	(1,000)	(1,000)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment	0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	$ 1,000	$ 1,000

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RETIREMENT BENEFITS (Notes)

3 Months Ended

Dec. 28, 2019

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Pension and Other Postretirement Benefits Disclosure [Text Block]

RETIREMENT PLANS

The components of net periodic pension cost for the Company's defined benefit plans were as follows (in millions):

	Thirteen Week Periods Ended
	December 28, 2019						December 29, 2018
	U.S. Pension Plans			Non-U.S. Pension Plans			U.S. Pension Plans			Non-U.S. Pension Plans
Service cost	$	2		$	1		$	1		$	1
Interest cost	3			1			2			1
Expected return on plan assets	(5		)	(1		)	(3		)	(1		)
Amortization of prior service cost	—			—			—			—
Amortization of actuarial (gain) loss	—			—			—			—
Net periodic pension cost	$	—		$	1		$	—		$	1

The net periodic pension cost for the Company's post-retirement pension plans was immaterial for the thirteen week periods ended December 28, 2019 and December 29, 2018. The defined benefit plan components of total pension cost, other than service cost, are included in other expense in the Company's condensed consolidated statements of income.

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DISCONTINUED OPERATIONS

3 Months Ended

Dec. 28, 2019

DISCONTINUED OPERATIONS [Abstract]

Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]

DISCONTINUED OPERATIONS

Current Year Divestitures

On December 20, 2019, TransDigm completed the divestiture of the Souriau-Sunbank Connection Technologies business (“Souriau-Sunbank”) with Eaton Corporation plc (“Eaton”) for approximately $920 million. Souriau-Sunbank was acquired by TransDigm as part of its acquisition of Esterline in March 2019 and was included in TransDigm’s Non-aviation segment. The divestiture represented a strategic shift in TransDigm’s business and, in accordance with US GAAP, qualifies as discontinued operations.

Income from discontinued operations, net of tax was $71 million in the condensed consolidated statements of income for the thirteen week period ended December 28, 2019. The $71 million was comprised of $9 million from Souriau-Sunbank's operations and a gain on the sale of Souriau-Sunbank, net of tax, of $62 million. The following is the summarized operating results for Souriau-Sunbank for the thirteen week period ended December 28, 2019 (in millions):

	Thirteen Week Period Ended December 28, 2019
Net sales	$	79
Income from discontinued operations before income taxes	13
Income tax expense	4
Income from discontinued operations, net of tax	9
Gain from sale of discontinued operations, net of tax	62
Income from discontinued operations, net of tax	$	71

At September 30, 2019, Souriau-Sunbank’s assets held-for-sale and liabilities held-for-sale were $962 million and $157 million, respectively. Under US GAAP, assets held for sale are to be reported at lower of its carrying amount or fair value less cost to sell. The following is the summarized balance sheet of Souriau-Sunbank’s assets held-for-sale and liabilities held-for-sale as of September 30, 2019 (in millions):

Assets and Liabilities of Discontinued Operations Held-for-Sale	Fiscal Year Ended September 30, 2019
Cash and cash equivalents	$	29
Trade accounts receivable—Net	67
Inventories—Net	88
Prepaid expenses and other	2
Property, plant and equipment—Net	101
Goodwill	480
Other intangibles—Net	194
Other	1
Total assets of discontinued operations	$	962
Accounts payable	$	33
Accrued liabilities	55
Long-term debt	6
Deferred income taxes	42
Other	21
Total liabilities of discontinued operations	$	157

Prior Year Divestitures

On September 20, 2019, TransDigm completed the divestiture of its Esterline Interface Technology (“EIT”) group of businesses to an affiliate of KPS Capital Partners, LP for approximately $190 million. EIT was acquired by TransDigm as part of its acquisition of Esterline in March 2019 and was included in TransDigm’s Non-aviation segment. The divestiture represented a strategic shift in TransDigm’s business and, in accordance with US GAAP, qualifies as discontinued operations.

There was no impact to the income from discontinued operations in the condensed consolidated statements of income for the thirteen week period ended December 28, 2019.

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REVENUE Narrative (Policies)

3 Months Ended

Dec. 28, 2019

Revenue Recognition [Abstract]

Revenue [Policy Text Block]

The majority of the Company's revenue is recorded at a point in time. 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.

In some contracts, the Company found that 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. Therefore, we recognize revenue over time for those agreements that have a right to margin and where the products being produced have no alternative use. 

Based on our production cycle, it is generally expected that goods related to the revenue 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.

Shipping and handling fees and costs incurred in connection with products sold are recorded in cost of sales in the condensed 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 statements of income.

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Cover Page Cover Page - shares	3 Months Ended
	Dec. 28, 2019	Jan. 26, 2020
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Dec. 28, 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		53,667,940
Document Fiscal Period Focus	Q1
Entity Central Index Key	0001260221
Document Fiscal Year Focus	2020
Amendment Flag	false
Current Fiscal Year End Date	--09-30

XML

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Net income	$ 305	$ 196
Less: Net income attributable to noncontrolling interests	(1)	0
NET INCOME ATTRIBUTABLE TO TD GROUP	304	196
Other comprehensive income (loss), net of tax:
Foreign currency translation	98	(11)
Unrealized gain (loss) on derivatives	23	(74)
Pensions and other postretirement benefits	6	0
Other comprehensive income (loss), net of tax, attributable to TD Group	127	(85)
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO TD GROUP	$ 431	$ 111

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DEBT (Tables)

3 Months Ended

Dec. 28, 2019

Debt Disclosure [Abstract]

Schedule of Debt

The Company’s debt consists of the following (in millions):

	December 28, 2019
	Gross Amount		Debt Issuance Costs			Original Issue Discount or Premium			Net Amount
Short-term borrowings—trade receivable securitization facility	$	350	$	—		$	—		$	350
Term loans	$	7,524	$	(56	)	$	(16	)	$	7,452
6.50% senior subordinated notes due 2024 (2024 Notes)	1,200		(5		)	—			1,195
6.50% senior subordinated notes due 2025 (2025 Notes)	750		(3		)	3			750
6.375% senior subordinated notes due 2026 (6.375% 2026 Notes)	950		(7		)	—			943
6.875% senior subordinated notes due 2026 (6.875% 2026 Notes)	500		(5		)	(3		)	492
6.25% secured notes due 2026 (2026 Secured Notes)	4,000		(57		)	2			3,945
7.50% senior subordinated notes due 2027 (7.50% 2027 Notes)	550		(5		)	—			545
5.50% senior subordinated notes due 2027 (5.50% 2027 notes	2,650		(23		)	—			2,627
Government refundable advances	31		—			—			31
Finance lease obligations	52		—			—			52
	18,207		(161		)	(14		)	18,032
Less current portion	81		(1		)	—			80
Long-term debt	$	18,126	$	(160	)	$	(14	)	$	17,952

	September 30, 2019
	Gross Amount		Debt Issuance Costs			Original Issue Discount or Premium			Net Amount
Short-term borrowings—trade receivable securitization facility	$	350	$	—		$	—		$	350
Term loans	$	7,524	$	(58	)	$	(17	)	$	7,449
6.00% 2022 Notes	1,150		(4		)	—			1,146
6.50% 2024 Notes	1,200		(6		)	—			1,194
6.50% 2025 Notes	750		(3		)	3			750
6.375% 2026 Notes	950		(7		)	—			943
6.875% 2026 Notes	500		(6		)	(3		)	491
6.25% 2026 Secured Notes	4,000		(60		)	2			3,942
7.50% 2027 Notes	550		(5		)	—			545
Government refundable advances	39		—			—			39
Finance lease obligations	50		—			—			50
	16,713		(149		)	(15		)	16,549
Less current portion	81		(1		)	—			80
Long-term debt	$	16,632	$	(148	)	$	(15	)	$	16,469

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UNAUDITED INTERIM FINANCIAL INFORMATION

3 Months Ended

Dec. 28, 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, 2019 included in TD Group’s Form 10-K filed on November 19, 2019. As disclosed therein, the Company’s annual consolidated financial statements were prepared in conformity with generally accepted accounting principles in the United States (“US GAAP”). The September 30, 2019 condensed consolidated balance sheet was derived from TD Group’s audited financial statements. The results of operations for the thirteen week period ended December 28, 2019 are not necessarily indicative of the results to be expected for the full year.

Certain prior year amounts have been reclassified to conform to the current year presentation.

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REVENUE Contract Assets and Liabilities (Tables)

3 Months Ended

Dec. 28, 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 millions):

	December 28, 2019		September 30, 2019		Change
Contract assets, current (1)	$	43	$	44	$	(1	)
Contract assets, non-current (2)	6		7		(1		)
Total contract assets	49		51		(2		)
Contract liabilities, current (3)	18		18		—
Contract liabilities, non-current (4)	16		13		3
Total contract liabilities	34		31		3
Net contract assets	$	15	$	20	$	(5	)

⁽¹⁾  Included in prepaid expenses and other on the condensed consolidated balance sheets.

⁽²⁾  Included in other non-current assets 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.

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DERIVATIVES AND HEDGING ACTIVITIES

3 Months Ended

Dec. 28, 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 US 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 income (loss) 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 (in millions)	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 (in millions).

	December 28, 2019					September 30, 2019
	Asset		Liability			Asset		Liability
Interest rate cap agreements	$	1	$	—		$	1	$	—
Interest rate swap agreements (1)	—		(183		)	—		(216		)
Net derivatives as classified in the balance sheet (2)	$	1	$	(183	)	$	1	$	(216	)

⁽¹⁾  The decrease in the interest rate swap liability is primarily attributable to a upward trend in the LIBO rate during the first quarter of fiscal 2020.

⁽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 December 28, 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 $17.0 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 income (loss) in stockholder’s deficit amortized into interest expense was $5.0 million and $1.1 million for the thirteen week periods ended December 28, 2019 and December 29, 2018, respectively. The accumulated other comprehensive income to be reclassified into interest expense over the remaining term of the cap agreements is $4.8 million with a related tax benefit of $1.1 million as of December 28, 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 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 income (loss) in stockholder’s deficit amortized into interest expense was $1.1 million and $0.3 million for the thirteen week periods ended December 28, 2019 and December 29, 2018. The accumulated other comprehensive income to be reclassified into interest income over the remaining term of the swaps agreements is $2.0 million with a related tax expense of $0.5 million as of December 28, 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 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 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 income (loss) in stockholder’s deficit amortized into interest income was $2.8 million and $0.7 million for the thirteen week periods ended December 28, 2019 and December 29, 2018. The accumulated other comprehensive income to be reclassified into interest income over the remaining term of the swaps agreements is $7.9 million with a related tax expense of $1.9 million as of December 28, 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 December 28, 2019, the Company had outstanding foreign currency forward exchange contracts principally to sell U.S. dollars with notional amounts of $191.9 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 thirteen week period ended December 28, 2019, the the Company recognized gains on foreign currency forward exchange contracts designated as fair value hedges of $0.2 million in cost of sales in the condensed consolidated statement of income. During the thirteen week period ended December 28, 2019, the gains the Company reclassified on foreign currency forward exchange contracts designated as cash flow hedges in the condensed consolidated income statement are immaterial. The gains (losses) were previously recorded as a component of accumulated other comprehensive income (loss) in stockholders' deficit.

During the thirteen week period ended December 28, 2019, the Company recorded a loss of $0.4 million on foreign currency forward exchange contracts that have not been designated as accounting hedges. These foreign currency exchange losses 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 thirteen week period ended December 28, 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 thirteen week period ended December 28, 2019.

Amounts related to foreign currency forward exchange contracts included in accumulated other comprehensive income (loss) in stockholders' deficit are reclassified into earnings when the hedged transaction settles. The Company expects to reclassify approximately $3.0 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 December 28, 2019 was 24 months.

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RECENT ACCOUNTING PRONOUNCEMENTS

3 Months Ended

Dec. 28, 2019

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

RECENT ACCOUNTING PRONOUNCEMENTS

RECENT ACCOUNTING PRONOUNCEMENTS

In February 2016, the FASB issued ASU 2016-02, “Leases (ASC 842),” which requires lessees to recognize a right-of-use asset and lease liability for all leases with a term of more than 12 months. ASU 2016-02 was effective for the Company on October 1, 2019, and required a modified retrospective application. In July 2018, the FASB issued ASU 2018-11, “Leases (ASC 842) Targeted Improvements,” which provided an additional transition method that allowed entities to initially apply the new standard at the adoption date and recognize a cumulative effect adjustment to the opening balance of retained earnings in the period of adoption without restating prior periods. The Company has completed the necessary changes to the consolidated financial statements and related disclosures, internal controls, financial policies and information systems. On October 1, 2019, the Company adopted ASC 842 and related amendments using the modified retrospective method. Results for reporting periods beginning after October 1, 2019, are presented under ASC 842, while prior period amounts continue to be reported under ASC 840, “Leases." The Company elected to apply the package of practical expedients permitted within the new standard, which among other things, allows the carry forward of historical lease classification of existing leases. Additionally, the adoption of the new standard resulted in the recording of lease assets and lease liabilities for operating leases of $99 million and $105 million, respectively, as of October 1, 2019. The effects of our transition to ASC 842 resulted in no cumulative adjustment to retained earnings in the period of adoption. The adoption of the standard did not have a material impact on our condensed consolidated statements of income or cash flows. Refer to Note 16, "Leases," for additional information.

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 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 December 2019, the FASB issued ASU 2019-12, “Income Taxes (ASC 740) - Simplifying the Accounting for Income Taxes,” which simplifies the accounting for income taxes by removing certain exceptions to the general principles in ASC 740. The amendments also improve consistent application of and simplify US GAAP for other areas of ASC 740 by clarifying and amending existing guidance. This guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. Early adoption of the amendments is permitted, including adoption in any interim period for which financial statements have not yet been issued. Depending on the amendment, adoption may be applied on the retrospective, modified retrospective or prospective basis. The Company is currently evaluating the impact of adopting this standard on our consolidated financial statements and disclosures.

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INTANGIBLE ASSETS

3 Months Ended

Dec. 28, 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 millions):

	December 28, 2019						September 30, 2019
	Gross Carrying Amount		Accumulated Amortization		Net		Gross Carrying Amount		Accumulated Amortization		Net
Trademarks and trade names	$	957	$	—	$	957	$	956	$	—	$	956
Technology	1,840		519		1,321		1,806		496		1,310
Order backlog	93		51		42		107		45		62
Customer relationships	443		35		408		438		30		408
Other	18		9		9		17		9		8
Total	$	3,351	$	614	$	2,737	$	3,324	$	580	$	2,744

The aggregate amortization expense on identifiable intangible assets for the thirteen week periods ended December 28, 2019 and December 29, 2018 was approximately $39.9 million and $20.0 million, respectively. The estimated amortization expense is $171.9 million for fiscal year 2020, $115.2 million for fiscal year 2021, and $114.7 million for each of the four succeeding fiscal years 2022 through 2025.

The following is a summary of changes in the carrying value of goodwill by segment from September 30, 2019 through December 28, 2019 (in millions):

	Power & Control			Airframe		Non- aviation			Total
Balance at September 30, 2019	$	4,121		$	3,598	$	101		$	7,820
Purchase price allocation adjustments	(106		)	106		(3		)	(3		)
Currency translation adjustment	12			16		1			29
Balance at December 28, 2019	$	4,027		$	3,720	$	99		$	7,846

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LEASES Maturities of Lease Liabilities Operating and Financing (Details) - USD ($) $ in Millions	Dec. 28, 2019	Oct. 01, 2019
Leases [Abstract]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	$ 20
Capital Leases, Future Minimum Payments Due, Next Twelve Months	4
Operating Leases, Future Minimum Payments, Due in Two Years	24
Capital Leases, Future Minimum Payments Due in Two Years	5
Operating Leases, Future Minimum Payments, Due in Three Years	20
Capital Leases, Future Minimum Payments Due in Three Years	5
Operating Leases, Future Minimum Payments, Due in Four Years	16
Capital Leases, Future Minimum Payments Due in Four Years	5
Operating Leases, Future Minimum Payments, Due in Five Years	14
Capital Leases, Future Minimum Payments Due in Five Years	6
Operating Leases, Future Minimum Payments, Due Thereafter	38
Capital Leases, Future Minimum Payments Due Thereafter	76
Operating Leases, Future Minimum Payments Due	132
Capital Leases, Future Minimum Payments Due	101
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	24
Capital Leases, Future Minimum Payments, Interest Included in Payments	49
Operating Lease, Liability	108	$ 105
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments	$ 52

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ACCUMULATED OTHER COMPREHENSIVE LOSS - Schedule of Amounts Recognized in Other Comprehensive Loss (Details) - USD ($) $ in Millions		3 Months Ended
		Dec. 28, 2019	Dec. 29, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Deferred tax benefit on reclassifications out of accumulated other comprehensive (loss) income		$ (59)	$ (54)
Losses reclassified into earnings, net of tax		305	196
Unrealized gain (loss) on derivatives designated and qualifying as cash flow hedges (1) | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization from redesignated interest rate swap and cap agreements (1)	[1]	1	1
Losses from settlement of foreign currency forward contracts	[2]	(1)	0
Losses reclassified into earnings, net of tax		$ 0	$ 1

[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).

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SUPPLEMENTAL GUARANTOR INFORMATION - Supplemental Condensed Consolidating Income Statement (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Condensed Income Statements, Captions [Line Items]
Net Income	$ 305	$ 196
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(1)	0
NET SALES	1,465	993
COST OF SALES	664	429
GROSS PROFIT	801	564
SELLING AND ADMINISTRATIVE EXPENSES	201	122
AMORTIZATION OF INTANGIBLE ASSETS	40	20
(LOSS) INCOME FROM OPERATIONS	560	422
INTEREST EXPENSE - NET	248	172
REFINANCING COSTS	22	0
OTHER INCOME	(3)	0
EQUITY IN INCOME OF SUBSIDIARIES	0	0
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	293	250
INCOME TAX PROVISION	59	54
INCOME FROM CONTINUING OPERATIONS	234	196
INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX	71	0
NET INCOME ATTRIBUTABLE TO TD GROUP	304	196
OTHER COMPREHENSIVE INCOME, NET OF TAX	127	(85)
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO TD GROUP	431	111
Eliminations
Condensed Income Statements, Captions [Line Items]
Net Income	(797)
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	0
NET SALES	(57)	(19)
COST OF SALES	(57)	(19)
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
OTHER INCOME	0
EQUITY IN INCOME OF SUBSIDIARIES	797	521
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(797)	(521)
INCOME TAX PROVISION	0	0
INCOME FROM CONTINUING OPERATIONS	(797)
INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX	0
NET INCOME ATTRIBUTABLE TO TD GROUP	(797)	(521)
OTHER COMPREHENSIVE INCOME, NET OF TAX	(180)	75
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO TD GROUP	(977)	(446)
TransDigm Group
Condensed Income Statements, Captions [Line Items]
Net Income	304
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	0
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
OTHER INCOME	0
EQUITY IN INCOME OF SUBSIDIARIES	(304)	(196)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	304	196
INCOME TAX PROVISION	0	0
INCOME FROM CONTINUING OPERATIONS	304
INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX	0
NET INCOME ATTRIBUTABLE TO TD GROUP	304	196
OTHER COMPREHENSIVE INCOME, NET OF TAX	127	(85)
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO TD GROUP	431	111
TransDigm Inc.
Condensed Income Statements, Captions [Line Items]
Net Income	304
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	0
NET SALES	45	41
COST OF SALES	25	23
GROSS PROFIT	20	18
SELLING AND ADMINISTRATIVE EXPENSES	54	41
AMORTIZATION OF INTANGIBLE ASSETS	0	0
(LOSS) INCOME FROM OPERATIONS	(34)	(23)
INTEREST EXPENSE - NET	250	177
REFINANCING COSTS	22
OTHER INCOME	(3)
EQUITY IN INCOME OF SUBSIDIARIES	(493)	(325)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	190	125
INCOME TAX PROVISION	0	(71)
INCOME FROM CONTINUING OPERATIONS	190
INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX	114
NET INCOME ATTRIBUTABLE TO TD GROUP	304	196
OTHER COMPREHENSIVE INCOME, NET OF TAX	43	(74)
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO TD GROUP	347	122
TransDigm UK [Member]
Condensed Income Statements, Captions [Line Items]
Net Income	9
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	0
NET SALES	0	0
COST OF SALES	0	0
GROSS PROFIT	0	0
SELLING AND ADMINISTRATIVE EXPENSES	0	0
AMORTIZATION OF INTANGIBLE ASSETS	0	0
(LOSS) INCOME FROM OPERATIONS	0	0
INTEREST EXPENSE - NET	9	5
REFINANCING COSTS	0
OTHER INCOME	(18)
EQUITY IN INCOME OF SUBSIDIARIES	0	0
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	9	(5)
INCOME TAX PROVISION	0	0
INCOME FROM CONTINUING OPERATIONS	9
INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX	0
NET INCOME ATTRIBUTABLE TO TD GROUP	9	(5)
OTHER COMPREHENSIVE INCOME, NET OF TAX	0	0
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO TD GROUP	9	(5)
Subsidiary Guarantors
Condensed Income Statements, Captions [Line Items]
Net Income	476
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	0
NET SALES	1,130	809
COST OF SALES	480	338
GROSS PROFIT	650	471
SELLING AND ADMINISTRATIVE EXPENSES	97	64
AMORTIZATION OF INTANGIBLE ASSETS	30	18
(LOSS) INCOME FROM OPERATIONS	523	389
INTEREST EXPENSE - NET	(5)	0
REFINANCING COSTS	0
OTHER INCOME	2
EQUITY IN INCOME OF SUBSIDIARIES	0	0
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	526	389
INCOME TAX PROVISION	50	119
INCOME FROM CONTINUING OPERATIONS	476
INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX	0
NET INCOME ATTRIBUTABLE TO TD GROUP	476	270
OTHER COMPREHENSIVE INCOME, NET OF TAX	5	12
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO TD GROUP	481	282
Non- Guarantor Subsidiaries
Condensed Income Statements, Captions [Line Items]
Net Income	9
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(1)
NET SALES	347	162
COST OF SALES	216	87
GROSS PROFIT	131	75
SELLING AND ADMINISTRATIVE EXPENSES	50	17
AMORTIZATION OF INTANGIBLE ASSETS	10	2
(LOSS) INCOME FROM OPERATIONS	71	56
INTEREST EXPENSE - NET	(6)	(10)
REFINANCING COSTS	0
OTHER INCOME	16
EQUITY IN INCOME OF SUBSIDIARIES	0	0
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	61	66
INCOME TAX PROVISION	9	6
INCOME FROM CONTINUING OPERATIONS	52
INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX	(43)
NET INCOME ATTRIBUTABLE TO TD GROUP	8	60
OTHER COMPREHENSIVE INCOME, NET OF TAX	132	(13)
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO TD GROUP	$ 140	$ 47

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DISCONTINUED OPERATIONS Schedule of Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Sep. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	$ 1,465	$ 993
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	71	$ 0
Disposal Group, Including Discontinued Operation, Assets, Current	0		$ 962
Disposal Group, Including Discontinued Operation, Liabilities, Current	0		157
Souriau Sunbank [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents			29
Revenues	79
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax	13
Discontinued Operation, Tax Effect of Discontinued Operation	4
Income (loss) from discontinued operations before gain or loss on disposal net of tax	9
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	62
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	$ 71
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net			67
Disposal Group, Including Discontinued Operation, Inventory			88
Disposal Group, Including Discontinued Operation, Prepaid and Other Assets			2
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment			101
Disposal Group, Including Discontinued Operation, Goodwill			480
Disposal Group, Including Discontinued Operation, Intangible Assets			194
Disposal Group, Including Discontinued Operation, Other Assets			1
Disposal Group, Including Discontinued Operation, Assets, Current			962
Disposal Group, Including Discontinued Operation, Accounts Payable			33
Disposal Group, Including Discontinued Operation, Accrued Liabilities			55
Disposal Group, including discontinued operations, Long-term Debt			6
Disposal Group, Including Discontinued Operation, Deferred Tax Liabilities			42
Disposal Group, Including Discontinued Operation, Other Liabilities			21
Disposal Group, Including Discontinued Operation, Liabilities, Current			$ 157

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INTANGIBLE ASSETS - Intangible Assets Subject to Amortization (Details) - USD ($) $ in Millions	Dec. 28, 2019	Sep. 30, 2019
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	$ 3,351	$ 3,324
Intangible Assets, Accumulated Amortization	614	580
Total	2,737	2,744
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,840	1,806
Accumulated Amortization	519	496
Net	1,321	1,310
Order backlog
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	93	107
Accumulated Amortization	51	45
Net	42	62
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	443	438
Accumulated Amortization	35	30
Net	408	408
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	18	17
Accumulated Amortization	9	9
Net	9	8
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill), Gross	957	956
Indefinite-Lived Intangible Assets, Accumulated Amortization	0	0
Intangible Assets (Excluding Goodwill), Net	$ 957	$ 956

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DEBT - Narratives (Details) - USD ($) $ in Millions		3 Months Ended
	Oct. 29, 2019	Dec. 28, 2019	Sep. 30, 2019
Debt Instrument [Line Items]
Interest Payable, Current		$ 181.0	$ 92.6
Gross Amount		18,207.0	16,713.0
Senior Subordinated Notes | Senior Subordinated Notes $2650M Due 2027 5.50% [Member]
Debt Instrument [Line Items]
Gross Amount	$ 2,650.0	2,650.0
Interest rate	5.50%
Debt Issuance Costs, Gross		23.6
Refinancing Costs		$ 1.1
Senior Subordinated Notes | 6.00% senior subordinated notes due 2022 (2022 Notes)
Debt Instrument [Line Items]
Gross Amount			$ 1,150.0
Interest rate		6.00%	6.00%
Debt Instrument, Repurchased Face Amount	$ 1,150.0
Debt Instrument, Repurchase Amount	25.5
Write off of Deferred Debt Issuance Cost		$ 3.8
Early Redemption Premium	$ 17.3
Senior Subordinated Notes | 6.875% senior subordinated noted due 2026 [Member]
Debt Instrument [Line Items]
Gross Amount		$ 500.0	$ 500.0
Interest rate		6.875%	6.875%
Senior Subordinated Notes | Senior Subordinated Notes $550M Due 2027 7.50% [Member]
Debt Instrument [Line Items]
Gross Amount		$ 550.0	$ 550.0
Interest rate		7.50%
Senior Subordinated Notes | 5.50% senior subordinated notes due 2020 (2020 Notes)
Debt Instrument [Line Items]
Interest rate			5.50%
Term loans
Debt Instrument [Line Items]
Gross Amount		$ 7,524.0	$ 7,524.0
Government Refundable Advances [Member]
Debt Instrument [Line Items]
Government refundable advances		31.3	39.2
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Capital Lease Obligations		$ 51.9	$ 49.9

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ACCUMULATED OTHER COMPREHENSIVE LOSS - Schedule of Accumulated Other Comprehensive Loss (Details) $ in Millions	3 Months Ended
	Dec. 28, 2019 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	$ (379)
Current-period other comprehensive gain	127
Balance at end of period	(252)
Unrealized gain (loss) on derivatives designated and qualifying as cash flow hedges (1)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(172)	[1]
Current-period other comprehensive gain	23	[1]
Balance at end of period	(149)	[1]
Defined benefit pension plan activity (2)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(40)	[2]
Current-period other comprehensive gain	6	[2]
Balance at end of period	(34)	[2]
Currency translation adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(167)
Current-period other comprehensive gain	98
Balance at end of period	$ (69)

[1] Unrealized gain represents derivative instruments, net of taxes of $(9.8) million and $22.3 million for the thirteen week periods ended December 28, 2019 and December 29, 2018, respectively

[2] Defined benefit pension plan and other post-retirement plan activity represents pension liability adjustments, net of taxes of $2.1 million for the thirteen week period ended December 28, 2019. There were no material pension liability adjustments, net of taxes for the thirteen week period ended December 29, 2018.

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DERIVATIVES AND HEDGING ACTIVITIES - Schedule of Interest Rate Derivatives (Details) - USD ($) $ in Millions		Dec. 28, 2019	Sep. 30, 2019
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	[1]	$ 1	$ 1
Derivative Asset, Fair Value, Gross Liability	[1]	(183)	(216)
Interest Rate Cap
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset		1	1
Derivative Asset, Fair Value, Gross Liability		0	0
Interest Rate Swap
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	[2]	0	0
Derivative Asset, Fair Value, Gross Liability	[2]	$ (183)	$ (216)

[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 decrease in the interest rate swap liability is primarily attributable to a upward trend in the LIBO rate during the first quarter of fiscal 2020.

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SEGMENTS - EBITDA Defined by Segment to Consolidated Income Before Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	$ 681	$ 487
Interest expense - net	248	172
Stock compensation expense	26	18
Refinancing Costs	22	0
Income from continuing operations before income taxes	293	250
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	703	502
Operating Segments | Power & Control
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	385	300
Operating Segments | Airframe
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	305	191
Operating Segments | Non- aviation
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	13	11
Corporate, Non-Segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA As Defined	22	15
Segment Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Depreciation and amortization expense	69	35
Interest expense - net	248	172
Acquisition-related costs	7	12
Stock compensation expense	26	18
Refinancing Costs		0
Other, net	$ 16	$ 0

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ACQUISITIONS AND DIVESTITURES - Narratives (Details) - USD ($) $ / shares in Units, $ in Millions					3 Months Ended		12 Months Ended
	Sep. 20, 2019	Aug. 30, 2019	Mar. 14, 2019	Oct. 01, 2018	Dec. 28, 2019	Dec. 29, 2018	Sep. 30, 2019
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired					$ 0.0	$ 29.0
GOODWILL					7,846.0		$ 7,820.0
Esterline [Member]
Business Acquisition [Line Items]
Business Acquisition, Share Price			$ 122.50
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents			$ 398.2
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net			3,923.9
Payments to Acquire Businesses, Net of Cash Acquired			3,536.3
Restricted cash			387.6
GOODWILL			2,190.0
Amount of goodwill expected to be tax deductible			25.6
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			1,300.0
Business acquisition, Intangibles, Tax Deductible Amount			48.9
Loss Contingency Accrual			$ 268.4		222.5		231.8
Loss Contingency Accrual, Period Increase (Decrease)							9.1
Loss Contingency, Accrual, Current					71.9		60.0
Loss Contingency, Accrual, Noncurrent					$ 150.6		171.8
Stormscope [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired		$ 20.0
Amount of goodwill expected to be tax deductible		11.1
Business acquisition, Intangibles, Tax Deductible Amount		$ 7.5
Tax benefit recognition period (in years)		15 years
NavCom [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired				$ 27.0
Amount of goodwill expected to be tax deductible				$ 9.0
Tax benefit recognition period (in years)				15 years
Souriau Sunbank [Member]
Business Acquisition [Line Items]
Loss Contingency Accrual							9.3
Divestiture, Sale Price							$ 920.0
Esterline Interface Technology Group [Member]
Business Acquisition [Line Items]
Divestiture, Sale Price	$ 190.0
Minimum [Member]
Business Acquisition [Line Items]
Air Transportation Equipment Estimated Useful Life					25 years
Maximum [Member]
Business Acquisition [Line Items]
Air Transportation Equipment Estimated Useful Life					30 years

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LEASES (Tables)

3 Months Ended

Dec. 28, 2019

Leases [Abstract]

Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]

Supplemental cash flow information related to leases for the thirteen week period ended December 28, 2019 is as follows (in millions):

	December 28, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash outflows from operating leases	$	7
Operating cash outflows from finance leases	1
Lease assets obtained in exchange for new lease obligations:
Operating leases	$	10

Lease, Cost [Table Text Block]

The components of lease expense for the thirteen weeks ended December 28, 2019 are as follows (in millions):

	Classification	December 28, 2019
Operating lease cost	Cost of Sales or Selling and Administrative Expenses	$	7
Finance lease cost
Amortization of leased assets	Cost of Sales	1
Interest on lease liabilities	Interest Expense - Net	1
Total lease cost		$	9

Leases, Supplemental Balance Sheet Information [Table Text Block]

Supplemental balance sheet information related to leases is as follows (in millions):

	Classification	December 28, 2019
Operating Leases
Operating lease right-of-use assets	Other Assets	$	102
Current operating lease liabilities	Accrued Liabilities	21
Long-term operating lease liabilities	Other Non-current Liabilities	87
Total operating lease liabilities		$	108
Finance Leases
Finance lease right-of-use assets, net	Property, Plant and Equipment—Net	$	70
Current finance lease liabilities	Accrued Liabilities	1
Long-term finance lease liabilities	Other Non-current Liabilities	51
Total finance lease liabilities		$	52

As of December 28, 2019, the Company has the following remaining lease term and weighted average discount rates (in millions):

Weighted-average remaining lease term
Operating leases	6.5 years
Finance leases	18.1 years
Weighted-average discount rate
Operating leases	6.2%
Finance leases	7.9%

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

Maturities of lease liabilities at December 28, 2019 are as follows (in millions):

	Operating Leases		Finance Leases
2020	$	20	$	4
2021	24		5
2022	20		5
2023	16		5
2024	14		6
Thereafter	38		76
Total future minimum lease payments	132		101
Less: imputed interest	24		49
Present value of lease liabilities reported	$	108	$	52

Finance Lease, Liability, Maturity [Table Text Block]

Maturities of lease liabilities at December 28, 2019 are as follows (in millions):

	Operating Leases		Finance Leases
2020	$	20	$	4
2021	24		5
2022	20		5
2023	16		5
2024	14		6
Thereafter	38		76
Total future minimum lease payments	132		101
Less: imputed interest	24		49
Present value of lease liabilities reported	$	108	$	52

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LEASES (Notes)

3 Months Ended

Dec. 28, 2019

Leases [Abstract]

LEASES

LEASES

The Company leases certain manufacturing facilities, offices, land, equipment and vehicles. Such leases, some of which are noncancelable and, in many cases, include renewals, expire at various dates. Such options to renew are included in the lease term when it is reasonably certain that the option will be exercised. The Company’s lease agreements typically do not contain any significant residual value guarantees or restrictive covenants, and payments within certain lease agreements are adjusted periodically for changes in an index or rate.

The Company determines if an arrangement is a lease at inception. Operating lease assets and liabilities are recognized at the commencement date of the lease based on the present value of lease payments over the lease term. Lease assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. The discount rate implicit within our leases is generally not determinable and therefore we determine the discount rate based on our incremental borrowing rate. The incremental borrowing rate for our leases is determined based on the lease term and the currency in which lease payments are made. The length of a lease term includes options to extend or terminate the lease when it is reasonably certain that the Company will exercise those options. The Company made an accounting policy election to not recognize lease assets or liabilities for leases with a term of 12 months or less. Additionally, when accounting for leases, the Company combines payments for leased assets, related services and other components of a lease.

The components of lease expense for the thirteen weeks ended December 28, 2019 are as follows (in millions):

	Classification	December 28, 2019
Operating lease cost	Cost of Sales or Selling and Administrative Expenses	$	7
Finance lease cost
Amortization of leased assets	Cost of Sales	1
Interest on lease liabilities	Interest Expense - Net	1
Total lease cost		$	9

Supplemental cash flow information related to leases for the thirteen week period ended December 28, 2019 is as follows (in millions):

	December 28, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash outflows from operating leases	$	7
Operating cash outflows from finance leases	1
Lease assets obtained in exchange for new lease obligations:
Operating leases	$	10

Supplemental balance sheet information related to leases is as follows (in millions):

	Classification	December 28, 2019
Operating Leases
Operating lease right-of-use assets	Other Assets	$	102
Current operating lease liabilities	Accrued Liabilities	21
Long-term operating lease liabilities	Other Non-current Liabilities	87
Total operating lease liabilities		$	108
Finance Leases
Finance lease right-of-use assets, net	Property, Plant and Equipment—Net	$	70
Current finance lease liabilities	Accrued Liabilities	1
Long-term finance lease liabilities	Other Non-current Liabilities	51
Total finance lease liabilities		$	52

As of December 28, 2019, the Company has the following remaining lease term and weighted average discount rates (in millions):

Weighted-average remaining lease term
Operating leases	6.5 years
Finance leases	18.1 years
Weighted-average discount rate
Operating leases	6.2%
Finance leases	7.9%

Maturities of lease liabilities at December 28, 2019 are as follows (in millions):

	Operating Leases		Finance Leases
2020	$	20	$	4
2021	24		5
2022	20		5
2023	16		5
2024	14		6
Thereafter	38		76
Total future minimum lease payments	132		101
Less: imputed interest	24		49
Present value of lease liabilities reported	$	108	$	52

A summary of minimum rental commitments at December 28, 2019 under noncancelable operating leases, which expire at various dates and in most cases contain renewal options, for each of the next five years and thereafter in the aggregate, is as follows (in millions):

	Operating Leases
2020	$	20
2021	25
2022	21
2023	17
2024	14
Thereafter	39
Total lease commitments	$	136

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SUBSEQUENT EVENTS

3 Months Ended

Dec. 28, 2019

Subsequent Event [Line Items]

Subsequent Events [Text Block]

SUBSEQUENT EVENTS

On January 7, 2020, the Company paid $1.9 billion in special dividends and dividend equivalent payments in connection with the Board of Directors' authorization and declaration of a special cash dividend of $32.50 on each outstanding share of common stock and cash dividend equivalent payments on vested options outstanding under its stock incentive plans on December 20, 2019. These special dividends and dividend equivalent payments were funded by existing cash on hand and the proceeds received from the completed Souriau-Sunbank divestiture. As of December 28, 2019, approximately $1.9 billion was accrued for the special dividend and dividend equivalent payments in accrued liabilities in the condensed consolidated balance sheets.

On January 22, 2020, TransDigm announced its intention to (i) reprice its existing tranche E terms loans, tranche F term loans and tranche G term loans and (ii) extend the maturity date of its existing tranche F term loans, in each case from existing and new lenders under the senior secured credit facilities. In connection with the repricing, TransDigm may also make certain other modifications to the terms of the senior secured credit facilities.

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DERIVATIVES AND HEDGING ACTIVITIES - Schedule of Notional Amounts of Outstanding Derivatives (Details) - USD ($) $ in Millions		3 Months Ended
		Dec. 28, 2019	Dec. 29, 2018
Tranche F | Interest Rate Swap
Derivative [Line Items]
Derivative, Notional Amount		$ 1,000
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
Tranche F | Interest rate swap beginning June 30, 2021 [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 1,400
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
Derivative, Cap Interest Rate		2.00%
Tranche E | Interest rate cap beginning September 30, 2015 [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 750
Derivative, Cap Interest Rate		2.50%
Tranche E | Interest rate cap beginning June 30, 2020 [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 750
Tranche E | Interest rate swap beginning March 31, 2016 [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 750
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
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
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
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
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
Tranche G [Member] | Interest rate swap beginning September 30, 2017 [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 400
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
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
Derivative, Fixed Interest Rate		5.50%
Derivative, Variable Interest Rate		3.00%
Derivative, Basis Spread on Variable Rate		2.50%
Unrealized gain (loss) on derivatives designated and qualifying as cash flow hedges (1) | Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative [Line Items]
Interest Expense	[1]	$ (1)	$ (1)

[1] This component of accumulated other comprehensive (loss) income is included in interest expense (see Note 12, “Derivatives and Hedging Activities,” for additional information).

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SEGMENTS - Net Sales by Reportable Segments (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Segment Reporting Information [Line Items]
NET SALES	$ 1,465	$ 993
Operating Segments | Power & Control
Segment Reporting Information [Line Items]
NET SALES	752	560
Operating Segments | Airframe
Segment Reporting Information [Line Items]
NET SALES	674	399
Operating Segments | Non- aviation
Segment Reporting Information [Line Items]
NET SALES	39	34
Commercial OEM [Member] | Operating Segments | Power & Control
Segment Reporting Information [Line Items]
NET SALES	184	133
Commercial OEM [Member] | Operating Segments | Airframe
Segment Reporting Information [Line Items]
NET SALES	230	133
Commercial Aftermarket [Member] | Operating Segments | Power & Control
Segment Reporting Information [Line Items]
NET SALES	220	157
Commercial Aftermarket [Member] | Operating Segments | Airframe
Segment Reporting Information [Line Items]
NET SALES	245	177
Defense [Member] | Operating Segments | Power & Control
Segment Reporting Information [Line Items]
NET SALES	348	270
Defense [Member] | Operating Segments | Airframe
Segment Reporting Information [Line Items]
NET SALES	$ 199	$ 89

XML

ACCUMULATED OTHER COMPREHENSIVE LOSS - Narratives (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax	$ 2.1
Other Comprehensive Loss, Derivatives Qualifying as Hedges, Tax	$ (9.8)	$ 22.3

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ACQUISITIONS AND DIVESTITURES - Business Combinations Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Dec. 28, 2019	Sep. 30, 2019	Mar. 14, 2019
Business Acquisition [Line Items]
Goodwill	$ 7,846.0	$ 7,820.0
Esterline [Member]
Business Acquisition [Line Items]
Current assets, excluding cash acquired			$ 387.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory			589.0
Other			422.0
Property, plant, and equipment			469.0
Intangible assets			1,300.0
Goodwill			2,190.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets			22.0
Total assets acquired			5,379.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable			146.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other			715.0
Other noncurrent liabilities			594.0
Total liabilities assumed			1,455.0
Net assets acquired			$ 3,923.9

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DISCONTINUED OPERATIONS (Tables)

3 Months Ended

Dec. 28, 2019

Souriau Sunbank [Member]

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Disposal Groups, Including Discontinued Operations [Table Text Block]

The following is the summarized operating results for Souriau-Sunbank for the thirteen week period ended December 28, 2019 (in millions):

	Thirteen Week Period Ended December 28, 2019
Net sales	$	79
Income from discontinued operations before income taxes	13
Income tax expense	4
Income from discontinued operations, net of tax	9
Gain from sale of discontinued operations, net of tax	62
Income from discontinued operations, net of tax	$	71

The following is the summarized balance sheet of Souriau-Sunbank’s assets held-for-sale and liabilities held-for-sale as of September 30, 2019 (in millions):

Assets and Liabilities of Discontinued Operations Held-for-Sale	Fiscal Year Ended September 30, 2019
Cash and cash equivalents	$	29
Trade accounts receivable—Net	67
Inventories—Net	88
Prepaid expenses and other	2
Property, plant and equipment—Net	101
Goodwill	480
Other intangibles—Net	194
Other	1
Total assets of discontinued operations	$	962
Accounts payable	$	33
Accrued liabilities	55
Long-term debt	6
Deferred income taxes	42
Other	21
Total liabilities of discontinued operations	$	157

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ACCUMULATED OTHER COMPREHENSIVE LOSS

3 Months Ended

Dec. 28, 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 thirteen week period ended December 28, 2019 (in millions):

	Unrealized gain (loss) on derivatives designated and qualifying as cash flow hedges (1)			Defined benefit pension plan activity (2)			Currency translation adjustment			Total
Balance at September 30, 2019	$	(172	)	$	(40	)	$	(167	)	$	(379	)
Current-period other comprehensive gain	23			6			98			127
Balance at December 28, 2019	$	(149	)	$	(34	)	$	(69	)	$	(252	)

⁽¹⁾  Unrealized gain represents derivative instruments, net of taxes of $(9.8) million and $22.3 million for the thirteen week periods ended December 28, 2019 and December 29, 2018, respectively.

⁽²⁾  Defined benefit pension plan and other post-retirement plan activity represents pension liability adjustments, net of taxes of $2.1 million for the thirteen week period ended December 28, 2019. There were no material pension liability adjustments, net of taxes for the thirteen week period ended December 29, 2018.

A summary of reclassifications out of accumulated other comprehensive (loss) income for the thirteen week periods ended December 28, 2019 and December 29, 2018 is provided below (in millions):

	Amount reclassified
	Thirteen Week Periods Ended
Description of reclassifications out of accumulated other comprehensive (loss) income	December 28, 2019			December 29, 2018
Amortization from redesignated interest rate swap and cap agreements (1)	$	1		$	1
Losses from settlement of foreign currency forward exchange contracts (2)	(1		)	—
Losses reclassified into earnings, net of tax	$	—		$	1

⁽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).

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SUPPLEMENTAL GUARANTOR INFORMATION

3 Months Ended

Dec. 28, 2019

Condensed Financial Information Disclosure [Abstract]

SUPPLEMENTAL GUARANTOR INFORMATION

SUPPLEMENTAL GUARANTOR INFORMATION

TransDigm Inc.’s 2024 Notes, 2025 Notes, 6.375% 2026 Notes, 2026 Secured Notes, 7.50% 2027 Notes and 5.50% 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 December 28, 2019 and September 30, 2019 and its statements of income and comprehensive income and cash flows for the thirteen week periods ended December 28, 2019 and December 29, 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 2024 Notes, 2025 Notes, 6.375% 2026 Notes, 2026 Secured Notes, 7.50% 2027 Notes and 5.50% 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 DECEMBER 28, 2019

(Amounts in millions)

	TransDigm Group			TransDigm Inc.			TransDigm UK		Subsidiary Guarantors			Non- Guarantor Subsidiaries		Eliminations			Total Consolidated
ASSETS
CURRENT ASSETS:
Cash and cash equivalents	$	—		$	3,087		$	1	$	(15	)	$	1,121	$	—		$	4,194
Trade accounts receivable - Net	—			—			—		161			864		—			1,025
Inventories - Net	—			55			—		899			356		(16		)	1,294
Prepaid expenses and other	—			29			—		52			58		—			139
Total current assets	—			3,171			1		1,097			2,399		(16		)	6,652
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	(4,303		)	15,750			974		17,542			5,957		(35,920		)	—
PROPERTY, PLANT AND  EQUIPMENT - NET	—			15			—		520			218		—			753
GOODWILL	—			83			—		5,895			1,868		—			7,846
OTHER INTANGIBLE ASSETS - NET	—			25			—		2,025			687		—			2,737
DEFERRED INCOME TAXES	—			—			—		—			13		—			13
OTHER	—			20			—		92			43		—			155
TOTAL ASSETS	$	(4,303	)	$	19,064		$	975	$	27,171		$	11,185	$	(35,936	)	$	18,156
LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY
CURRENT LIABILITIES:
Current portion of long-term debt	$	—		$	76		$	—	$	1		$	3	$	—		$	80
Short-term borrowings - trade receivable securitization facility	—			—			—		—			350		—			350
Accounts payable	—			17			—		148			100		—			265
Accrued liabilities	—			2,158			4		240			253		—			2,655
Total current liabilities	—			2,251			4		389			706		—			3,350
LONG-TERM DEBT	—			17,383			492		42			35		—			17,952
DEFERRED INCOME TAXES	—			—			—		350			98		—			448
OTHER NON-CURRENT LIABILITIES	—			273			—		265			167		—			705
Total liabilities	—			19,907			496		1,046			1,006		—			22,455
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	(4,303		)	(843		)	479		26,125			10,175		(35,936		)	(4,303		)
NONCONTROLLING INTERESTS	—			—			—		—			4		—			4
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	$	(4,303	)	$	19,064		$	975	$	27,171		$	11,185	$	(35,936	)	$	18,156

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING BALANCE SHEET

AS OF SEPTEMBER 30, 2019

(Amounts in millions)

	TransDigm Group			TransDigm Inc.			TransDigm UK		Subsidiary Guarantors			Non- Guarantor Subsidiaries		Eliminations			Total Consolidated
ASSETS
CURRENT ASSETS:
Cash and cash equivalents	$	—		$	1,092		$	—	$	(12	)	$	387	$	—		$	1,467
Trade accounts receivable - Net	—			—			—		172			896		—			1,068
Inventories - Net	—			52			—		880			316		(15		)	1,233
Assets held-for-sale	—			—			—		206			756		—			962
Prepaid expenses and other	—			27			—		45			63		—			135
Total current assets	—			1,171			—		1,291			2,418		(15		)	4,865
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	(2,894		)	14,729			975		16,373			6,898		(36,081		)	—
PROPERTY, PLANT AND EQUIPMENT - NET	—			17			—		513			227		—			757
GOODWILL	—			83			—		5,544			2,193		—			7,820
OTHER INTANGIBLE ASSETS - NET	—			25			—		2,064			655		—			2,744
OTHER	—			6			—		35			28		—			69
TOTAL ASSETS	$	(2,894	)	$	16,031		$	975	$	25,820		$	12,419	$	(36,096	)	$	16,255
LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY
CURRENT LIABILITIES:
Current portion of long-term debt	$	—		$	76		$	—	$	1		$	3	$	—		$	80
Short-term borrowings - trade receivable securitization facility	—			—			—		—			350		—			350
Accounts payable	—			17			—		160			99		—			276
Accrued liabilities	—			215			12		237			211		—			675
Liabilities held-for-sale	—			—			—		22			135		—			157
Total current liabilities	—			308			12		420			798		—			1,538
LONG-TERM DEBT	—			15,893			492		49			35		—			16,469
DEFERRED INCOME TAXES	—			—			—		347			94		—			441
OTHER NON-CURRENT LIABILITIES	—			315			—		233			143		—			691
Total liabilities	—			16,516			504		1,049			1,070		—			19,139
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	(2,894		)	(485		)	471		24,771			11,339		(36,096		)	(2,894		)
NONCONTROLLING INTERESTS	—			—			—		—			10		—			10
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	$	(2,894	)	$	16,031		$	975	$	25,820		$	12,419	$	(36,096	)	$	16,255

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING STATEMENT OF INCOME AND COMPREHENSIVE INCOME

FOR THE THIRTEEN WEEK PERIOD ENDED DECEMBER 28, 2019

(Amounts in millions)

	TransDigm Group			TransDigm Inc.			TransDigm UK			Subsidiary Guarantors			Non- Guarantor Subsidiaries			Eliminations			Total Consolidated
NET SALES	$	—		$	45		$	—		$	1,130		$	347		$	(57	)	$	1,465
COST OF SALES	—			25			—			480			216			(57		)	664
GROSS PROFIT	—			20			—			650			131			—			801
SELLING AND ADMINISTRATIVE EXPENSES	—			54			—			97			50			—			201
AMORTIZATION OF INTANGIBLE ASSETS	—			—			—			30			10			—			40
(LOSS) INCOME FROM OPERATIONS	—			(34		)	—			523			71			—			560
INTEREST EXPENSE (INCOME) - NET	—			250			9			(5		)	(6		)	—			248
REFINANCING COSTS	—			22			—			—			—			—			22
OTHER (INCOME) EXPENSE	—			(3		)	(18		)	2			16			—			(3		)
EQUITY IN INCOME OF SUBSIDIARIES	(304		)	(493		)	—			—			—			797			—
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	304			190			9			526			61			(797		)	293
INCOME TAX PROVISION	—			—			—			50			9			—			59
INCOME FROM CONTINUING OPERATIONS	304			190			9			476			52			(797		)	234
INCOME (LOSS) FROM DISCONTINUED OPERATIONS, NET OF TAX	—			114			—			—			(43		)	—			71
NET INCOME	304			304			9			476			9			(797		)	305
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—			—			—			—			(1		)	—			(1		)
NET INCOME ATTRIBUTABLE TO TD GROUP	$	304		$	304		$	9		$	476		$	8		$	(797	)	$	304
OTHER COMPREHENSIVE INCOME, NET OF TAX	127			43			—			5			132			(180		)	127
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO TD GROUP	$	431		$	347		$	9		$	481		$	140		$	(977	)	$	431

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING STATEMENT OF INCOME AND COMPREHENSIVE INCOME

FOR THE THIRTEEN WEEK PERIOD ENDED DECEMBER 29, 2018

(Amounts in millions)

	TransDigm Group			TransDigm Inc.			TransDigm UK			Subsidiary Guarantors		Non- Guarantor Subsidiaries			Eliminations			Total Consolidated
NET SALES	$	—		$	41		$	—		$	809	$	162		$	(19	)	$	993
COST OF SALES	—			23			—			338		87			(19		)	429
GROSS PROFIT	—			18			—			471		75			—			564
SELLING AND ADMINISTRATIVE EXPENSES	—			41			—			64		17			—			122
AMORTIZATION OF INTANGIBLE ASSETS	—			—			—			18		2			—			20
(LOSS) INCOME FROM OPERATIONS	—			(23		)	—			389		56			—			422
INTEREST EXPENSE (INCOME) - NET	—			177			5			—		(10		)	—			172
EQUITY IN INCOME OF SUBSIDIARIES	(196		)	(325		)	—			—		—			521			—
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	196			125			(5		)	389		66			(521		)	250
INCOME TAX PROVISION	—			(71		)	—			119		6			—			54
NET INCOME (LOSS) ATTRIBUTABLE TO TD GROUP	$	196		$	196		$	(5	)	$	270	$	60		$	(521	)	$	196
OTHER COMPREHENSIVE (LOSS) INCOME, NET OF TAX	(85		)	(74		)	—			12		(13		)	75			(85		)
TOTAL COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO TD GROUP	$	111		$	122		$	(5	)	$	282	$	47		$	(446	)	$	111

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE THIRTEEN WEEK PERIOD ENDED DECEMBER 28, 2019

(Amounts in millions)

	TransDigm Group			TransDigm Inc.			TransDigm UK			Subsidiary Guarantors			Non- Guarantor Subsidiaries			Eliminations			Total Consolidated
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	$	—		$	(80	)	$	(8	)	$	448		$	72		$	1		$	433
INVESTING ACTIVITIES:
Capital expenditures	—			(1		)	—			(22		)	(4		)	—			(27		)
Proceeds in connection with sale of discontinued operations, net	—			904			—			—			—			—			904
Net cash provided by (used in) investing activities	—			903			—			(22		)	(4		)	—			877
FINANCING ACTIVITIES:
Intercompany activities	44			(285		)	9			(429		)	662			(1		)	—
Proceeds from exercise of stock options	20			—			—			—			—			—			20
Dividend equivalent payments	(64		)	—			—			—			—			—			(64		)
Redemption of senior subordinated notes due 2022, net	—			(1,168		)	—			—			—			—			(1,168		)
Proceeds from 5.50% senior subordinated notes due 2027, net	—			2,625			—			—			—			—			2,625
Other, net	—			—			—			—			1			—			1
Net cash provided by (used in) financing activities	—			1,172			9			(429		)	663			(1		)	1,414
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	—			—			—			—			3			—			3
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	—			1,995			1			(3		)	734			—			2,727
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	—			1,092			—			(12		)	387			—			1,467
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	—		$	3,087		$	1		$	(15	)	$	1,121		$	—		$	4,194

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE THIRTEEN WEEK PERIOD ENDED DECEMBER 29, 2018

(Amounts in millions)

	TransDigm Group			TransDigm Inc.			TransDigm UK		Subsidiary Guarantors			Non- Guarantor Subsidiaries			Eliminations		Total Consolidated
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	$	—		$	(19	)	$	—	$	285		$	64		$	—	$	330
INVESTING ACTIVITIES:
Capital expenditures	—			—			—		(20		)	(4		)	—		(24		)
Payments made in connection with acquisitions, net of cash acquired	—			—			—		(29		)	—			—		(29		)
Net cash used in investing activities	—			—			—		(49		)	(4		)	—		(53		)
FINANCING ACTIVITIES:
Intercompany activities	16			430			—		(235		)	(211		)	—		—
Proceeds from exercise of stock options	14			—			—		—			—			—		14
Dividend equivalent payments	(24		)	—			—		—			—			—		(24		)
Net cash provided by (used in) financing activities	6			430			—		(235		)	(211		)	—		(10		)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	—			—			—		—			(3		)	—		(3		)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	6			411			—		1			(154		)	—		264
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	—			1,821			—		(2		)	254			—		2,073
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	6		$	2,232		$	—	$	(1	)	$	100		$	—	$	2,337

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FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Dec. 28, 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 millions):

		December 28, 2019				September 30, 2019
	Level	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Cash and cash equivalents	1	$	4,194	$	4,194	$	1,467	$	1,467
Interest rate cap agreements (1)	2	1		1		1		1
Foreign currency forward exchange contracts and other (2)	2	1		1		—		—
Liabilities:
Interest rate swap agreements (3)	2	14		14		13		13
Interest rate swap agreements (4)	2	169		169		202		202
Foreign currency forward exchange contracts and other (3)	2	4		4		6		6
Short-term borrowings - trade receivable securitization facility (5)	1	350		350		350		350
Long-term debt, including current portion:
Term loans (5)	2	7,452		7,509		7,449		7,478
6.00% 2022 Notes (5)	1	—		—		1,146		1,167
6.50% 2024 Notes (5)	1	1,195		1,236		1,194		1,239
6.50% 2025 Notes (5)	1	750		781		750		782
6.375% 2026 Notes (5)	1	943		1,007		943		999
6.875% 2026 Notes (5)	1	492		536		491		535
6.25% 2026 Notes (5)	1	3,945		4,325		3,942		4,290
7.50% 2027 Notes (5)	1	545		601		545		595
5.50% 2027 Notes (5)	1	2,627		2,686		—		—
Government Refundable Advances	2	31		31		39		39
Finance Lease Obligations	2	52		52		50		50

⁽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.

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DESCRIPTION OF THE BUSINESS

3 Months Ended

Dec. 28, 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.

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EARNINGS PER SHARE (TWO-CLASS METHOD) (Tables)

3 Months Ended

Dec. 28, 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 millions, except per share data) using the two-class method:

	Thirteen Week Periods Ended
	December 28, 2019			December 29, 2018
Numerator for earnings per share:
Income from continuing operations	$	234		$	196
Less: Net income attributable to noncontrolling interests	(1		)	—
Net income from continuing operations attributable to TD Group	233			196
Less: Special dividends declared or paid on participating securities	(185		)	(24		)
	48			172
Income from discontinued operations, net of tax	71			—
Net income applicable to TD Group common stockholders - basic and diluted	$	119		$	172
Denominator for basic and diluted earnings per share under the two-class method:
Weighted-average common shares outstanding	53.6			52.8
Vested options deemed participating securities	3.8			3.5
Total shares for basic and diluted earnings per share	57.4			56.3
Earnings per share from continuing operations - basic and diluted	$	0.83		$	3.05
Earnings per share from discontinued operations - basic and diluted	1.24			—
Earnings per share	$	2.07		$	3.05

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Condensed Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
NET SALES	$ 1,465	$ 993
COST OF SALES	664	429
GROSS PROFIT	801	564
SELLING AND ADMINISTRATIVE EXPENSES	201	122
AMORTIZATION OF INTANGIBLE ASSETS	40	20
INCOME FROM OPERATIONS	560	422
INTEREST EXPENSE - NET	248	172
REFINANCING COSTS	22	0
OTHER INCOME	(3)	0
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	293	250
INCOME TAX PROVISION	59	54
INCOME FROM CONTINUING OPERATIONS	234	196
INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX	71	0
Net Income	305	196
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(1)	0
NET INCOME ATTRIBUTABLE TO TD GROUP	304	196
NET INCOME APPLICABLE TO TD GROUP COMMON STOCKHOLDERS	$ 119	$ 172
Earnings per share attributable to TD Group common stockholders:
Earnings per share from continuing operations - basic and diluted	$ 0.83	$ 3.05
Earnings per share from discontinued operations - basic and diluted	1.24	0
Earnings per share	2.07	3.05
Cash dividends declared per common share	$ 32.50	$ 0
Weighted-average shares outstanding:
Basic and diluted	57.4	56.3

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ACQUISITIONS AND DIVESTITURES

3 Months Ended

Dec. 28, 2019

Business Combinations [Abstract]

ACQUISITIONS

ACQUISITIONS AND DIVESTITURES

During the fiscal year ended September 30, 2019, the Company completed the acquisitions of Esterline Technologies Corporation ("Esterline") and substantially all of the assets and technical data rights of the Stormscope product line from L3Harris Technologies, Inc. ("Stormscope") and NavCom Defense Electronics ("NavCom"). 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 December 28, 2019, the one year measurement period is open for Esterline and Stormscope; 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 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.

Acquisitions

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, was an industry leader in specialized manufacturing for the aerospace and defense industry 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 complexity of the Esterline acquisition, the allocation of the purchase price is preliminary and will be finalized by the end of the one year measurement period permissible under US GAAP.

Except where otherwise noted in the notes to the 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 as of the acquisition date of March 14, 2019 is summarized in the table below (presented in millions).

Assets acquired:
Trade accounts receivable	$	387
Inventories	589
Prepaid expenses and other	422
Property, plant, and equipment	469
Other intangible assets	1,300
Goodwill	2,190
Other	22
Total assets acquired	5,379
Liabilities assumed:
Accounts payable	146
Accrued liabilities	715
Other non-current liabilities	594
Total liabilities assumed	1,455
Net assets acquired	$	3,924

The Company currently expects that of the approximately $2.2 billion of goodwill recognized for the acquisition, approximately $25.6 million will be deductible for tax purposes. Also, of the approximately $1.3 billion of other intangible assets recognized for the acquisition, the Company currently expects that approximately $48.9 million will be deductible for tax purposes.

In connection with the Esterline acquisition, we acquired existing long-term contracts with customers that were incurring gross margin losses as of the date of acquisition. Based on our review of these contracts, we concluded that the terms of certain contracts were unfavorable when compared to market terms as of the acquisition date. As a result, we recognized loss contract reserves as of the acquisition date of $268.4 million based on the present value of the difference between the contractual cash flows of the existing long-term contracts and the estimated cash flows had the contracts been executed at market terms as of the acquisition date. As of September 30, 2019, we reclassified $9.3 million in loss contract reserves to liabilities held-for-sale, as it pertained to Souriau-Sunbank. Significant assumptions used to determine the fair value of the loss contract reserves using the discounted cash flow model include discount rates, forecasted quantities of products to be sold under the long-term contracts and market prices for respective products. These significant assumptions are

forward looking and could be affected by future economic and market conditions. The loss contract reserves are amortized and recorded as an offset to cost of sales over the life of the contracts as actual sales occur under the long-term contracts. Approximately $9.1 million was amortized and recorded as an offset to cost of sales in the condensed consolidated statement of income for the thirteen week period ended December 28, 2019. Total loss contract reserves related to the Esterline acquisition are $222.5 million and $231.8 million at December 28, 2019 and September 30, 2019, respectively, of which $71.9 million and $60.0 million is classified in accrued liabilities and $150.6 million and $171.8 million is classified in other non-current liabilities in the condensed consolidated balance sheets at December 28, 2019 and September 30, 2019, respectively.

Extant Acquisitions – On August 30, 2019, the Company's Extant subsidiary completed the acquisition of substantially all of the assets and technical data rights of the Stormscope product line from L3Harris Technologies, Inc. for approximately $20 million in cash. Stormscope is a lightning detection system for the general aviation and business jet markets. Stormscope is included as a product line of Extant, which is included in TransDigm's Power and Control segment. The Company expects that approximately $11.1 million of goodwill recognized for the acquisition and approximately $7.5 million of other intangible assets recognized for the acquisition will be deductible for tax purposes over 15 years.

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. Approximately $9.0 million of goodwill recognized for the acquisition is deductible for tax purposes over 15 years.

Pro forma net sales and results of operations for the Extant acquisitions had they occurred at the beginning of the applicable thirteen week periods ended December 28, 2019 or December 29, 2018 are not material and, accordingly, are not provided.

Divestitures

Souriau-Sunbank – On December 20, 2019, TransDigm completed the divestiture of the Souriau-Sunbank Connection Technologies business (“Souriau-Sunbank”) with Eaton Corporation plc (“Eaton”) for approximately $920 million. Souriau-Sunbank was acquired by TransDigm as part of its acquisition of Esterline in March 2019.

Esterline Interface Technology Group – On September 20, 2019, TransDigm completed the divestiture of its Esterline Interface Technology (“EIT”) group of businesses to an affiliate of KPS Capital Partners, LP for approximately $190 million. EIT was acquired by TransDigm as part of its acquisition of Esterline in March 2019.

Refer to Note 18, "Discontinued Operations," for further information on the Company's divestitures.

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INVENTORIES

3 Months Ended

Dec. 28, 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 millions):

	December 28, 2019			September 30, 2019
Raw materials and purchased component parts	$	858		$	805
Work-in-progress	373			360
Finished goods	197			192
Total	1,428			1,357
Reserves for excess and obsolete inventory	(134		)	(124		)
Inventories - Net	$	1,294		$	1,233

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FAIR VALUE MEASUREMENTS

3 Months Ended

Dec. 28, 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 millions):

		December 28, 2019				September 30, 2019
	Level	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Cash and cash equivalents	1	$	4,194	$	4,194	$	1,467	$	1,467
Interest rate cap agreements (1)	2	1		1		1		1
Foreign currency forward exchange contracts and other (2)	2	1		1		—		—
Liabilities:
Interest rate swap agreements (3)	2	14		14		13		13
Interest rate swap agreements (4)	2	169		169		202		202
Foreign currency forward exchange contracts and other (3)	2	4		4		6		6
Short-term borrowings - trade receivable securitization facility (5)	1	350		350		350		350
Long-term debt, including current portion:
Term loans (5)	2	7,452		7,509		7,449		7,478
6.00% 2022 Notes (5)	1	—		—		1,146		1,167
6.50% 2024 Notes (5)	1	1,195		1,236		1,194		1,239
6.50% 2025 Notes (5)	1	750		781		750		782
6.375% 2026 Notes (5)	1	943		1,007		943		999
6.875% 2026 Notes (5)	1	492		536		491		535
6.25% 2026 Notes (5)	1	3,945		4,325		3,942		4,290
7.50% 2027 Notes (5)	1	545		601		545		595
5.50% 2027 Notes (5)	1	2,627		2,686		—		—
Government Refundable Advances	2	31		31		39		39
Finance Lease Obligations	2	52		52		50		50

⁽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 December 28, 2019 and September 30, 2019.

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SUPPLEMENTAL GUARANTOR INFORMATION - Supplemental Condensed Consolidating Balance Sheet (Details) - USD ($) $ in Millions	Dec. 28, 2019	Sep. 30, 2019
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	$ 4,194	$ 1,467
Trade accounts receivable—Net	1,025	1,068
Inventories—Net	1,294	1,233
Assets held-for-sale	0	962
Prepaid expenses and other	139	135
Total current assets	6,652	4,865
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	0	0
PROPERTY, PLANT AND EQUIPMENT—NET	753	757
GOODWILL	7,846	7,820
OTHER INTANGIBLE ASSETS—NET	2,737	2,744
DEFERRED INCOME TAXES	13
OTHER	155	69
TOTAL ASSETS	18,156	16,255
Current portion of long-term debt	80	80
Short-term borrowings—trade receivable securitization facility	350	350
Accounts payable	265	276
Accrued liabilities	2,655	675
Liabilities held-for-sale	0	157
Total current liabilities	3,350	1,538
LONG-TERM DEBT	17,952	16,469
DEFERRED INCOME TAXES	448	441
OTHER NON-CURRENT LIABILITIES	705	691
Total liabilities	22,455	19,139
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	(4,303)	(2,894)
NONCONTROLLING INTERESTS	4	10
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	18,156	16,255
Eliminations
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	0	0
Trade accounts receivable—Net	0	0
Inventories—Net	(16)	(15)
Assets held-for-sale		0
Prepaid expenses and other	0	0
Total current assets	(16)	(15)
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	(35,920)	(36,081)
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	(35,936)	(36,096)
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
Liabilities held-for-sale		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	(35,936)	(36,096)
NONCONTROLLING INTERESTS	0	0
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	(35,936)	(36,096)
TransDigm Group
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	0	0
Trade accounts receivable—Net	0	0
Inventories—Net	0	0
Assets held-for-sale		0
Prepaid expenses and other	0	0
Total current assets	0	0
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	(4,303)	(2,894)
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	(4,303)	(2,894)
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
Liabilities held-for-sale		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	(4,303)	(2,894)
NONCONTROLLING INTERESTS	0	0
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	(4,303)	(2,894)
TransDigm Inc.
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	3,087	1,092
Trade accounts receivable—Net	0	0
Inventories—Net	55	52
Assets held-for-sale		0
Prepaid expenses and other	29	27
Total current assets	3,171	1,171
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	15,750	14,729
PROPERTY, PLANT AND EQUIPMENT—NET	15	17
GOODWILL	83	83
OTHER INTANGIBLE ASSETS—NET	25	25
DEFERRED INCOME TAXES	0
OTHER	20	6
TOTAL ASSETS	19,064	16,031
Current portion of long-term debt	76	76
Short-term borrowings—trade receivable securitization facility	0	0
Accounts payable	17	17
Accrued liabilities	2,158	215
Liabilities held-for-sale		0
Total current liabilities	2,251	308
LONG-TERM DEBT	17,383	15,893
DEFERRED INCOME TAXES	0	0
OTHER NON-CURRENT LIABILITIES	273	315
Total liabilities	19,907	16,516
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	(843)	(485)
NONCONTROLLING INTERESTS	0	0
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	19,064	16,031
TransDigm UK [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	1	0
Trade accounts receivable—Net	0	0
Inventories—Net	0	0
Assets held-for-sale		0
Prepaid expenses and other	0	0
Total current assets	1	0
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	974	975
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	975	975
Current portion of long-term debt	0	0
Short-term borrowings—trade receivable securitization facility	0	0
Accounts payable	0	0
Accrued liabilities	4	12
Liabilities held-for-sale		0
Total current liabilities	4	12
LONG-TERM DEBT	492	492
DEFERRED INCOME TAXES	0	0
OTHER NON-CURRENT LIABILITIES	0	0
Total liabilities	496	504
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	479	471
NONCONTROLLING INTERESTS	0	0
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	975	975
Subsidiary Guarantors
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	(15)	(12)
Trade accounts receivable—Net	161	172
Inventories—Net	899	880
Assets held-for-sale		206
Prepaid expenses and other	52	45
Total current assets	1,097	1,291
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	17,542	16,373
PROPERTY, PLANT AND EQUIPMENT—NET	520	513
GOODWILL	5,895	5,544
OTHER INTANGIBLE ASSETS—NET	2,025	2,064
DEFERRED INCOME TAXES	0
OTHER	92	35
TOTAL ASSETS	27,171	25,820
Current portion of long-term debt	1	1
Short-term borrowings—trade receivable securitization facility	0	0
Accounts payable	148	160
Accrued liabilities	240	237
Liabilities held-for-sale		22
Total current liabilities	389	420
LONG-TERM DEBT	42	49
DEFERRED INCOME TAXES	350	347
OTHER NON-CURRENT LIABILITIES	265	233
Total liabilities	1,046	1,049
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	26,125	24,771
NONCONTROLLING INTERESTS	0	0
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	27,171	25,820
Non- Guarantor Subsidiaries
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	1,121	387
Trade accounts receivable—Net	864	896
Inventories—Net	356	316
Assets held-for-sale		756
Prepaid expenses and other	58	63
Total current assets	2,399	2,418
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	5,957	6,898
PROPERTY, PLANT AND EQUIPMENT—NET	218	227
GOODWILL	1,868	2,193
OTHER INTANGIBLE ASSETS—NET	687	655
DEFERRED INCOME TAXES	13
OTHER	43	28
TOTAL ASSETS	11,185	12,419
Current portion of long-term debt	3	3
Short-term borrowings—trade receivable securitization facility	350	350
Accounts payable	100	99
Accrued liabilities	253	211
Liabilities held-for-sale		135
Total current liabilities	706	798
LONG-TERM DEBT	35	35
DEFERRED INCOME TAXES	98	94
OTHER NON-CURRENT LIABILITIES	167	143
Total liabilities	1,006	1,070
TD GROUP STOCKHOLDERS' (DEFICIT) EQUITY	10,175	11,339
NONCONTROLLING INTERESTS	4	10
TOTAL LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY	$ 11,185	$ 12,419

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LEASES Maturities of Lease Liabilities (Details) $ in Millions	Dec. 28, 2019 USD ($)
Leases [Abstract]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	$ 20
Operating Leases, Future Minimum Payments, Due in Two Years	25
Operating Leases, Future Minimum Payments, Due in Three Years	21
Operating Leases, Future Minimum Payments, Due in Four Years	17
Operating Leases, Future Minimum Payments, Due in Five Years	14
Operating Leases, Future Minimum Payments, Due Thereafter	39
Operating Leases, Future Minimum Payments Due	$ 136

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LEASES Components of Lease Expense (Details) $ in Millions	3 Months Ended
	Dec. 28, 2019 USD ($)
Leases [Abstract]
Operating Lease, Cost	$ 7
Finance Lease, Right-of-Use Asset, Amortization	1
Finance Lease, Interest Expense	1
Lease, Cost	$ 9

XML

SUPPLEMENTAL GUARANTOR INFORMATION - Supplemental Condensed Consolidating Cash Flow Statement (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Condensed Cash Flow Statements, Captions [Line Items]
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	$ 433	$ 330
Capital expenditures	(27)	(24)
Payments made in connection with acquisitions, net of cash acquired	0	(29)
Proceeds in connection with the sale of discontinued operations, net	904	0
Net cash provided by (used in) investing activities	877	(53)
Intercompany activities	0	0
Proceeds from exercise of stock options	20	14
Dividend equivalent payments	(64)	(24)
Redemption of senior subordinated notes due 2022, net	2,625
Proceeds from 5.50% senior subordinated notes due 2027, net	2,625	0
Other, net	1	0
Net cash provided by (used in) financing activities	1,414	(10)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	3	(3)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	2,727	264
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	1,467	2,073
CASH AND CASH EQUIVALENTS, END OF PERIOD	4,194	2,337
Cash and Cash Equivalents, Period Increase (Decrease)		264
Eliminations
Condensed Cash Flow Statements, Captions [Line Items]
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	1	0
Capital expenditures	0	0
Payments made in connection with acquisitions, net of cash acquired		0
Proceeds in connection with the sale of discontinued operations, net	0
Net cash provided by (used in) investing activities	0	0
Intercompany activities	(1)	0
Proceeds from exercise of stock options	0	0
Dividend equivalent payments	0	0
Redemption of senior subordinated notes due 2022, net	0
Repayments on term loans	0
Other, net	0
Net cash provided by (used in) financing activities	(1)	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
Proceeds in connection with the sale of discontinued operations, net	0
Net cash provided by (used in) investing activities	0	0
Intercompany activities	44	16
Proceeds from exercise of stock options	20	14
Dividend equivalent payments	(64)	(24)
Redemption of senior subordinated notes due 2022, net	0
Repayments on term loans	0
Other, net	0
Net cash provided by (used in) financing activities	0	6
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	6
Cash and Cash Equivalents, Period Increase (Decrease)		6
TransDigm Inc.
Condensed Cash Flow Statements, Captions [Line Items]
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	(80)	(19)
Capital expenditures	(1)	0
Payments made in connection with acquisitions, net of cash acquired		0
Proceeds in connection with the sale of discontinued operations, net	904
Net cash provided by (used in) investing activities	903	0
Intercompany activities	(285)	430
Proceeds from exercise of stock options	0	0
Dividend equivalent payments	0	0
Redemption of senior subordinated notes due 2022, net	2,625
Repayments on term loans	1,168
Other, net	0
Net cash provided by (used in) financing activities	1,172	430
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	0	0
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	1,995
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	1,092	1,821
CASH AND CASH EQUIVALENTS, END OF PERIOD	3,087	2,232
Cash and Cash Equivalents, Period Increase (Decrease)		411
TransDigm UK [Member]
Condensed Cash Flow Statements, Captions [Line Items]
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	(8)	0
Capital expenditures	0	0
Payments made in connection with acquisitions, net of cash acquired		0
Proceeds in connection with the sale of discontinued operations, net	0
Net cash provided by (used in) investing activities	0	0
Intercompany activities	9	0
Proceeds from exercise of stock options	0	0
Dividend equivalent payments	0	0
Redemption of senior subordinated notes due 2022, net	0
Repayments on term loans	0
Other, net	0
Net cash provided by (used in) financing activities	9	0
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	0	0
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	1
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	0	0
CASH AND CASH EQUIVALENTS, END OF PERIOD	1	0
Cash and Cash Equivalents, Period Increase (Decrease)		0
Subsidiary Guarantors
Condensed Cash Flow Statements, Captions [Line Items]
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	448	285
Capital expenditures	(22)	(20)
Payments made in connection with acquisitions, net of cash acquired		(29)
Proceeds in connection with the sale of discontinued operations, net	0
Net cash provided by (used in) investing activities	(22)	(49)
Intercompany activities	(429)	(235)
Proceeds from exercise of stock options	0	0
Dividend equivalent payments	0	0
Redemption of senior subordinated notes due 2022, net	0
Repayments on term loans	0
Other, net	0
Net cash provided by (used in) financing activities	(429)	(235)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	0	0
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(3)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	(12)	(2)
CASH AND CASH EQUIVALENTS, END OF PERIOD	(15)	(1)
Cash and Cash Equivalents, Period Increase (Decrease)		1
Non- Guarantor Subsidiaries
Condensed Cash Flow Statements, Captions [Line Items]
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	72	64
Capital expenditures	(4)	(4)
Payments made in connection with acquisitions, net of cash acquired		0
Proceeds in connection with the sale of discontinued operations, net	0
Net cash provided by (used in) investing activities	(4)	(4)
Intercompany activities	662	(211)
Proceeds from exercise of stock options	0	0
Dividend equivalent payments	0	0
Redemption of senior subordinated notes due 2022, net	0
Repayments on term loans	0
Other, net	1
Net cash provided by (used in) financing activities	663	(211)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	3	(3)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	734
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	387	254
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 1,121	100
Cash and Cash Equivalents, Period Increase (Decrease)		$ (154)

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INVENTORIES - Schedule of Inventory (Details) - USD ($) $ in Millions	Dec. 28, 2019	Sep. 30, 2019
Inventory Disclosure [Abstract]
Raw materials and purchased component parts	$ 858	$ 805
Work-in-progress	373	360
Finished goods	197	192
Total	1,428	1,357
Reserves for excess and obsolete inventory	(134)	(124)
Inventories - Net	$ 1,294	$ 1,233

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DEBT - Schedule of Debt (Detail) - USD ($) $ in Millions		Dec. 28, 2019	Oct. 29, 2019	Sep. 30, 2019
Debt Instrument [Line Items]
Gross Amount		$ 18,207.0		$ 16,713.0
Debt Issuance Costs		(161.0)		(149.0)
Debt Instrument, Unamortized Discount (Premium), Net		(14.0)		(15.0)
Short-term borrowings—trade receivable securitization facility		350.0		350.0
Total debt outstanding		18,032.0		16,549.0
Long-term Debt, Current Maturities, Net		80.0		80.0
Long-term Debt, Excluding Current Maturities, Gross		18,126.0		16,632.0
Deferred Finance Costs, Excluding Current Maturities		(160.0)		(148.0)
Debt Instrument, Unamortized Discount, Excluding Current Maturities		(14.0)		(15.0)
Long-term debt		17,952.0		16,469.0
Term loans
Debt Instrument [Line Items]
Gross Amount		7,524.0		7,524.0
Debt Issuance Costs		(56.0)		(58.0)
Debt Instrument, Unamortized Discount (Premium), Net		(16.0)		(17.0)
Total debt outstanding	[1]	$ 7,452.0		$ 7,449.0
Senior Subordinated Notes | 6.00% senior subordinated notes due 2022 (2022 Notes)
Debt Instrument [Line Items]
Interest rate		6.00%		6.00%
Gross Amount				$ 1,150.0
Debt Issuance Costs				(4.0)
Debt Instrument, Unamortized Discount (Premium), Net				0.0
Total debt outstanding	[1]	$ 0.0		$ 1,146.0
Senior Subordinated Notes | 6.50% senior subordinated notes due 2024 (2024 Notes)
Debt Instrument [Line Items]
Interest rate		6.50%		6.50%
Gross Amount		$ 1,200.0		$ 1,200.0
Debt Issuance Costs		(5.0)		(6.0)
Debt Instrument, Unamortized Discount (Premium), Net		0.0		0.0
Total debt outstanding	[1]	$ 1,195.0		$ 1,194.0
Senior Subordinated Notes | 6.50% senior subordinated notes due 2025 (2025 Notes)
Debt Instrument [Line Items]
Interest rate		6.50%		6.50%
Gross Amount		$ 750.0		$ 750.0
Debt Issuance Costs		(3.0)		(3.0)
Debt Instrument, Unamortized Discount (Premium), Net		3.0		3.0
Total debt outstanding	[1]	$ 750.0		$ 750.0
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		$ 950.0		$ 950.0
Debt Issuance Costs		(7.0)		(7.0)
Debt Instrument, Unamortized Discount (Premium), Net		0.0		0.0
Total debt outstanding	[1]	$ 943.0		$ 943.0
Senior Subordinated Notes | 6.875% senior subordinated noted due 2026 [Member]
Debt Instrument [Line Items]
Interest rate		6.875%		6.875%
Gross Amount		$ 500.0		$ 500.0
Debt Issuance Costs		(5.0)		(6.0)
Debt Instrument, Unamortized Discount (Premium), Net		(3.0)		(3.0)
Total debt outstanding	[1]	$ 492.0		491.0
Senior Subordinated Notes | Senior Subordinated Notes $550M Due 2027 7.50% [Member]
Debt Instrument [Line Items]
Interest rate		7.50%
Gross Amount		$ 550.0		550.0
Debt Issuance Costs		(5.0)		(5.0)
Debt Instrument, Unamortized Discount (Premium), Net		0.0		0.0
Total debt outstanding	[1]	545.0		545.0
Senior Subordinated Notes | Senior Subordinated Notes $2650M Due 2027 5.50% [Member]
Debt Instrument [Line Items]
Interest rate			5.50%
Gross Amount		2,650.0	$ 2,650.0
Debt Issuance Costs		(23.0)
Debt Instrument, Unamortized Discount (Premium), Net		0.0
Total debt outstanding	[1]	$ 2,627.0		0.0
Senior Notes | Senior Secured Notes $4B Due 2026 6.25% [Member]
Debt Instrument [Line Items]
Interest rate		6.25%
Gross Amount		$ 4,000.0		4,000.0
Debt Issuance Costs		(57.0)		(60.0)
Debt Instrument, Unamortized Discount (Premium), Net		2.0		2.0
Total debt outstanding		3,945.0		3,942.0
Government Refundable Advances [Member]
Debt Instrument [Line Items]
Debt Issuance Costs		0.0		0.0
Debt Instrument, Unamortized Discount (Premium), Net		0.0		0.0
Total debt outstanding		31.0		39.0
Government refundable advances		31.3		39.2
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Debt Issuance Costs		0.0		0.0
Debt Instrument, Unamortized Discount (Premium), Net		0.0		0.0
Total debt outstanding		52.0		50.0
Capital Lease Obligations		51.9		49.9
Asset-backed Securities
Debt Instrument [Line Items]
Short-term borrowings—trade receivable securitization facility, Gross		350.0		350.0
Debt Issuance Costs		0.0		0.0
Debt Instrument, Unamortized Discount (Premium), Net		0.0		0.0
Short-term borrowings—trade receivable securitization facility	[1]	350.0		350.0
Less current portion
Debt Instrument [Line Items]
Debt Issuance Costs		(1.0)		(1.0)
Debt Instrument, Unamortized Discount (Premium), Net				0.0
Original Issue Discount or Premium		0.0
Long-term Debt, Current Maturities, Gross		81.0		81.0
Long-term Debt, Current Maturities, Net		$ 80.0		$ 80.0

[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.