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Basis of Presentation - Percentage of revenue from U.S. government contracts (Details) | 12 Months Ended
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Dec. 31, 2016
New Accounting Pronouncements |
Revenues from contracts with U.S. Government (as a percent) | 25.00%

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- Definition Percentage of revenue from contracts with U.S. Government that will be impacted by the new revenue recognition standard. + References No definition available. + Details
Name: | txt_RevenuesFromContractsWithU.S.GovernmentPercentage
Namespace Prefix: | txt_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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