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v3.25.4

Leases - Additional Information (Detail) | 12 Months Ended
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Dec. 29, 2025
Leases [Abstract] |
Operating and finance leases expire | various dates through 2043

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- Definition Lessee operating lease and finance lease expire description. + References No definition available. + Details
Name: | ttmi_LesseeOperatingLeaseAndFinanceLeaseExpireDescription
Namespace Prefix: | ttmi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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