Debt Instrument, Extension Term

No definition available.

Name:	tdg_DebtInstrumentExtensionTerm
Namespace Prefix:	tdg_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Unamortized Premium. Write-Off

+ References

No definition available.

+ Details

Name:	tdg_DebtInstrumentUnamortizedPremium.WriteOff
Namespace Prefix:	tdg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Government refundable advances

+ References

No definition available.

+ Details

Name:	tdg_Governmentrefundableadvances
Namespace Prefix:	tdg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Long Term Debt, Principal Amount, Guaranteed

+ References

No definition available.

+ Details

Name:	tdg_LongTermDebtPrincipalAmountGuaranteed
Namespace Prefix:	tdg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Long-Term Debt, Refinanced, Amount

+ References

No definition available.

+ Details

Name:	tdg_LongTermDebtRefinancedAmount
Namespace Prefix:	tdg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Original Issue Discount Rate

+ References

No definition available.

+ Details

Name:	tdg_OriginalIssueDiscountRate
Namespace Prefix:	tdg_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The aggregate expense charged against earnings for refinancing the entity's debt structure, comprising the premium paid to redeem senior subordinated notes, the write off of debt issue costs and unamortized note premium and discount, and costs for settlement of interest rate swap agreement and other expenses.

+ References

No definition available.

+ Details

Name:	tdg_RefinancingCosts
Namespace Prefix:	tdg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments applied to principal.

+ References

+ Details

Name:	us-gaap_DebtInstrumentPeriodicPaymentPrincipal
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Section 50
-Paragraph 3
-Subparagraph (e)
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-URI https://asc.fasb.org/1943274/2147477734/942-470-50-3

+ Details

Name:	us-gaap_DebtInstrumentRedemptionPricePercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentRepurchaseAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentRepurchasedFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount, after accumulated amortization, of debt discount.

+ References

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+ Details

Name:	us-gaap_DebtInstrumentUnamortizedDiscount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount, after accumulated amortization, of debt discount (premium).

+ References

+ Details

Name:	us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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+ Details

Name:	us-gaap_DeferredFinanceCostsGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Present value of lessee's discounted obligation for lease payments from finance lease.

+ References

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+ Details

Name:	us-gaap_FinanceLeaseLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of interest payable on debt, including, but not limited to, trade payables.

+ References

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-Topic 942
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-Section S99
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+ Details

Name:	us-gaap_InterestPayableCurrentAndNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

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+ Details

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Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
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Period Type:

- Details

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Period Type:

- Details

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Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=tdg_SeniorSecuredNotes1000MDue20317125Member
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Period Type:

- Details

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Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
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- Details

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- Details

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- Details

Name:	us-gaap_LongtermDebtTypeAxis=tdg_TrancheITermLoansMember
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Name:	us-gaap_LongtermDebtTypeAxis=tdg_TrancheHTermLoansMember
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Name:	us-gaap_LongtermDebtTypeAxis=tdg_TrancheKTermLoansMember
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Period Type:

- Details

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- Details

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DEBT - Additional Debt Instruments (Details) - USD ($) $ in Millions							3 Months Ended		9 Months Ended
	Jun. 04, 2024	Apr. 22, 2024	Mar. 28, 2024	Mar. 22, 2024	Feb. 27, 2024	Nov. 28, 2023	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023	Jul. 31, 2024	Jul. 12, 2024	Jul. 11, 2024	Mar. 21, 2024	Feb. 26, 2024	Sep. 30, 2023
Debt Instrument [Line Items]
Accrued interest							$ 243.0		$ 243.0							$ 125.0
Debt Instrument, Unamortized Discount (Premium), Net							49.0		49.0							56.0
Long Term Debt, Principal Amount, Guaranteed					$ 200.0	$ 200.0
REFINANCING COSTS							30.0	$ 32.0	59.0	$ 41.0
Finance lease obligations							271.0		271.0							193.0
Revolving Credit Facility
Debt Instrument [Line Items]
Interest rate					2.25%										2.50%
Debt Issuance Costs, Gross							1.0		1.0
Line of Credit Facility, Maximum Borrowing Capacity					$ 910.0										$ 810.0
Line of Credit Facility, Remaining Borrowing Capacity							839.0		839.0
Write off of Deferred Debt Issuance Cost									3.0
Asset-backed Securities
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount (Premium), Net							0.0		0.0							$ 0.0
Tranche J Term Loans
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 997.0					$ 1,000.0
Interest rate	2.50%					3.25%
Original Issue Discount Rate						0.25%
Debt Instrument, Unamortized Discount (Premium), Net						$ 3.0
Debt Instrument, Periodic Payment, Principal	$ 9.0					3.0
Debt Issuance Costs, Gross							10.0		10.0
Long-term debt, refinanced, amount							997.0
Senior Secured Notes $1,000M due 2031 7.125%
Debt Instrument [Line Items]
Debt Instrument, Face Amount						$ 1,000.0
Interest rate						7.125%
Debt Issuance Costs, Gross							$ 10.0		$ 10.0
Debt Instrument, Redemption Price, Percentage						99.25%
Debt Instrument, Unamortized Discount						$ 8.0
Securitization Facility
Debt Instrument [Line Items]
Interest rate							1.60%		1.60%
Debt instrument, extension term							1 year		1 year
Long-Term Line of Credit							$ 100.0		$ 100.0
Line of Credit Facility, Maximum Borrowing Capacity							$ 450.0		$ 450.0
Debt, Weighted Average Interest Rate							6.91%		6.91%							6.95%
Securitization Facility \| Subsequent Event
Debt Instrument [Line Items]
Interest rate												1.45%	1.60%
Long-Term Line of Credit											$ 38.0
Line of Credit Facility, Maximum Borrowing Capacity												$ 650.0	$ 450.0
Senior Secured Notes $2,200M due 2029 6.375%
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 2,200.0
Interest rate					6.375%
Debt Issuance Costs, Gross							$ 21.0		$ 21.0
Debt Instrument, Redemption Price, Percentage					100.00%
Senior Secured Notes $2,200M due 2032 6.625%
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 2,200.0
Interest rate					6.625%
Debt Issuance Costs, Gross							20.0		20.0
Tranche I Term Loans
Debt Instrument [Line Items]
Debt Instrument, Face Amount	2,644.0			$ 4,525.0
Interest rate				2.75%										3.25%
Debt Instrument, Periodic Payment, Principal	$ 5.0			$ 11.0
Long-term debt, refinanced, amount							2,644.0
Tranche H Term Loans
Debt Instrument [Line Items]
Debt Instrument, Repurchase Amount				1,708.0
Tranche K Term Loans
Debt Instrument [Line Items]
Debt Instrument, Face Amount				$ 1,708.0
Interest rate				2.75%
Debt Instrument, Unamortized Discount (Premium), Net				$ 4.0
Debt Instrument, Periodic Payment, Principal				$ 4.0
Debt Instrument, Redemption Price, Percentage				0.25%
Tranche I And K Term Loans
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount (Premium), Net							2.0		2.0
REFINANCING COSTS									6.0
Senior Secured Notes $4.4B Due 2026 6.25%
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage			100.00%
Write off of Deferred Debt Issuance Cost									21.0
REFINANCING COSTS									19.0
Debt Instrument, Repurchased Face Amount			$ 4,400.0
Debt Instrument, Unamortized Premium. Write-Off									(2.0)
Senior Secured Notes $500M due 2029 6.375%
Debt Instrument [Line Items]
Debt Instrument, Face Amount				$ 550.0
Interest rate				6.375%
Debt Issuance Costs, Gross							5.0		5.0
Debt Instrument, Redemption Price, Percentage				99.75%
Debt Instrument, Unamortized Discount				$ 1.0
Senior Subordinated Notes $550M Due 2027 7.50%
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount		$ 550.0
Government refundable advances
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount (Premium), Net							0.0		0.0							$ 0.0
Government refundable advances							16.0		16.0							21.0
Finance Lease Obligations
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount (Premium), Net							0.0		0.0							0.0
Finance lease obligations							271.0		271.0							$ 193.0
Senior Subordinated Notes \| Senior Subordinated Notes $550M Due 2027 7.50%
Debt Instrument [Line Items]
Interest rate																7.50%
Debt Instrument, Unamortized Discount (Premium), Net																$ 0.0
Debt Instrument, Redemption Price, Percentage		100.00%
Write off of Deferred Debt Issuance Cost									2.0
Tranche I And J Term Loans
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount (Premium), Net							12.0		12.0
Debt Issuance Costs, Gross							$ 3.0		3.0
Write off of Deferred Debt Issuance Cost									$ 14.0