The compensation per share amount received under agreement if minority shareholders elect to put their shares to TE.

No definition available.

Name:	tel_AcquiredEntityMinorityShareholdersExchangeCompensationPerShareAmount
Namespace Prefix:	tel_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The recurring annual compensation per share amount under agreement if minority shareholders elect to maintain shares.

+ References

No definition available.

+ Details

Name:	tel_AcquiredEntityMinorityShareholdersRecurringCompensationPerShareAmount
Namespace Prefix:	tel_
Data Type:	num:perShareItemType
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.

+ References

No definition available.

+ Details

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

- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

Name:	us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

This element represents the fair value of the noncontrolling interest in the acquiree at the acquisition date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (e)(1)
-URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472

+ Details

Name:	us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The number of businesses acquired by the entity during the period.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfBusinessesAcquired
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585

+ Details

Name:	us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_BusinessAcquisitionAxis=tel_Fiscal2020AcquisitionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=tel_FirstSensorAgMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=tel_DominationAndProfitAndLossTransferAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Acquisitions (Details) € / shares in Units, € in Millions, $ in Millions	1 Months Ended		6 Months Ended
	Mar. 31, 2020 EUR (€)	Mar. 31, 2020 USD ($)	Mar. 27, 2020 USD ($) item	Mar. 29, 2019 USD ($)	Apr. 30, 2020 € / shares	Mar. 31, 2020 USD ($)
Acquisitions
Net cash paid \| $			$ 359	$ (8)
2020 Acquisitions
Acquisitions
Net cash paid \| $			$ 124
Number of other businesses acquired \| item			3
First Sensor AG
Acquisitions
Net cash paid	€ 209	$ 232
Percentage of voting interest acquired	72.00%					72.00%
Fair value of noncontrolling interest	€ 96					$ 107
Expected \| Domination And Profit And Loss Transfer Agreement ("DPLTA") \| First Sensor AG
Acquisitions
First Sensor minority shareholders recurring annual compensation (in euro per share) \| € / shares					€ 0.56
First Sensor minority shareholders exchange compensation amount (in euro per share) \| € / shares					€ 33.27