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Summary of Significant Accounting Policies - Finance Revenues (Details)	12 Months Ended
	Dec. 28, 2024
Minimum | Nonperforming
Revenues
Number of months of contractual delinquency to classify accounts as nonaccrual unless such collection is not doubtful	3 months

X

- Definition

Represents the maximum number of months of contractual delinquency to classify accounts as nonaccrual unless such collection is not doubtful.

+ References

No definition available.

+ Details

Name:	txt_NumberOfMonthsOfContractualDelinquencyForAutomaticClassificationAsNonaccrualAccount
Namespace Prefix:	txt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_NonperformingFinancingReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: