Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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

- Definition

Description of reference rate used for variable rate of debt instrument.

+ References

No definition available.

+ Details

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

- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481568/470-20-55-69B

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
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-Name Accounting Standards Codification
-Section 55
-Paragraph 69C
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481568/470-20-55-69C

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
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-Name Accounting Standards Codification
-Section 50
-Paragraph 1D
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1D

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482907/825-10-50-10

+ Details

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

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
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

+ Details

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

- References

No definition available.

+ Details

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

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
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- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
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- Details

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Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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Data Type:	na
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- Details

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Data Type:	na
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Period Type:

- Details

Name:	us-gaap_VariableRateAxis=tel_AlternativeCurrencyTermRateMember
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Data Type:	na
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- Details

Name:	us-gaap_DebtInstrumentAxis=tel_ReplacedCreditFacilityMember
Namespace Prefix:
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Debt - Narrative (Details) - USD ($) $ in Millions	1 Months Ended	6 Months Ended
Debt - Narrative (Details) - USD ($) $ in Millions	Apr. 30, 2024	Mar. 29, 2024	Sep. 29, 2023
Debt
Fair value of debt		$ 4,074	$ 3,974
Five-Year Credit Facility \| Subsequent event
Debt
Revolving credit facility term	5 years
Maximum borrowing capacity	$ 1,500
Five-Year Credit Facility \| Subsequent event \| Minimum
Debt
Annual facility fee, basis points (as a percent)	0.05%
Five-Year Credit Facility \| Subsequent event \| Maximum
Debt
Annual facility fee, basis points (as a percent)	0.125%
Five-Year Credit Facility \| Subsequent event \| Term SOFR
Debt
Debt instrument description of variable rate basis	Term SOFR, plus margin based on debt rating
Five-Year Credit Facility \| Subsequent event \| Bank of America Base Rate
Debt
Debt instrument description of variable rate basis	Bank of America base rate plus margin based on debt rating
Five-Year Credit Facility \| Subsequent event \| Federal funds effective rate
Debt
Debt instrument description of variable rate basis	federal funds effective rate plus margin based on debt rating
Debt instrument basis spread on variable rate (as a percent)	0.50%
Five-Year Credit Facility \| Subsequent event \| One-Month Term SOFR
Debt
Debt instrument description of variable rate basis	Term SOFR for a one-month interest period, plus margin based on debt rating
Debt instrument basis spread on variable rate (as a percent)	1.00%
Five-Year Credit Facility \| Subsequent event \| Alternative base rate
Debt
Debt instrument basis spread on variable rate (as a percent)	1.00%
Five-Year Credit Facility \| Subsequent event \| Alternative currency daily rate
Debt
Debt instrument description of variable rate basis	Alternative currency daily rate plus margin based on debt rating
Five-Year Credit Facility \| Subsequent event \| Alternative currency term rate
Debt
Debt instrument description of variable rate basis	Alternative currency term rate plus margin based on debt rating
Replaced Credit Facility
Debt
Revolving credit facility term		5 years
Maximum borrowing capacity		$ 1,500
Borrowings under the Credit Facility		$ 0	$ 0