v3.25.4

Summary of Significant Accounting Policies - Revenue Recognition (Details) | 12 Months Ended
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Jan. 03, 2026
U. S. Government |
Revenues |
Contract with U.S. Government, percent of total revenues | 27.00%
U. S. Government | Fixed-price and fixed-price incentive contracts |
Revenues |
Percentage of revenue under fixed-price and fixed-price incentive contracts | 53.00%
Maximum | U. S. Government | Performance-based |
Revenues |
Percentage of contract price received for performance based payments on US Government Contracts | 90.00%
Maximum | U. S. Government | Progress payments |
Revenues |
Percentage of costs incurred representing progress payments on US Government Contracts | 80.00%
Commercial Contract | Minimum |
Revenues |
Period of warranty programs | 1 year
Commercial Contract | Maximum |
Revenues |
Period of warranty programs | 5 years

X
- Definition Percentage of contract price received for performance based payments on US Government contracts based on quantifiable measures of performance or on the achievement of specified events or milestones. + References No definition available. + Details
Name: | txt_PercentageOfContractPriceReceivedForPerformanceBasedPaymentsOnUsGovernmentContracts
Namespace Prefix: | txt_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of costs incurred on US Government contracts as the work progresses representing progress payments. + References No definition available. + Details
Name: | txt_PercentageOfCostsIncurredRepresentingProgressPaymentsOnUsGovernmentContracts
Namespace Prefix: | txt_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period for warranty programs. + References No definition available. + Details
Name: | txt_PeriodForWarrantyPrograms
Namespace Prefix: | txt_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Revenue from Contract With Customer, Percent of Total Revenue + References No definition available. + Details
Name: | txt_RevenueFromContractWithCustomerPercentOfTotalRevenue
Namespace Prefix: | txt_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of revenue under fixed-price and fixed-price incentive contracts with government. + References No definition available. + Details
Name: | txt_RevenueFromContractWithCustomersPercent
Namespace Prefix: | txt_
Data Type: | dtr-types:percentItemType
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_MajorCustomersAxis=txt_USGovernmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ContractWithCustomerBasisOfPricingAxis=us-gaap_FixedPriceContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ContractWithCustomerBasisOfPricingAxis=txt_PerformanceBasedPaymentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ContractWithCustomerBasisOfPricingAxis=txt_ProgressBasedPaymentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=txt_CommercialContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |