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Commitments and Contingencies - Letter of Credit (Details) - USD ($) $ in Millions | Dec. 28, 2024 | Dec. 30, 2023
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Commitments and Contingencies Disclosure [Abstract] |  |
Aggregate amount of outstanding letter of credit arrangements and surety bonds | $ 336 | $ 338

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- Definition Letters of Credit and Surety Bonds Outstanding, Amount + References No definition available. + Details
Name: | txt_LettersOfCreditAndSuretyBondsOutstandingAmount
Namespace Prefix: | txt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration