Cashless rollover of debt.

No definition available.

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Namespace Prefix:	ttmi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Percentage of limitation on pledges of capital stock.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Remaining unamortized debt issuance costs.

+ References

No definition available.

+ Details

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- Definition

Unamortized Debt Issuance Expense Amortization Period

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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- Definition

Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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- Definition

Amount of the fee that accompanies borrowing money under the debt instrument.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Amount of principal of debt issued.

+ References

+ Details

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Balance Type:	credit
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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- Definition

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Long-term Debt and Letters of Credit - Additional Information (Detail) - USD ($) $ in Thousands				3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2026	Sep. 24, 2026	Jun. 01, 2026	Sep. 28, 2026	Sep. 29, 2025	Jun. 29, 2026	Sep. 28, 2026	Sep. 29, 2025	Dec. 29, 2025
Debt Instrument [Line Items]
Remaining unamortized debt issuance costs				$ 13,402			$ 13,402		$ 5,617
Cashless rollover							280,841	$ 0
Proceeds from long-term debt borrowings							1,079,159	0
Loss on extinguishment of debt				0	$ 0		(747)	$ 0
Total debt				1,659,000			$ 1,659,000		924,150
Weighted Average
Debt Instrument [Line Items]
Unamortized debt discount and debt issuance costs, amortization period							5 years 8 months 12 days
Customary Acquisition Holiday \| Maximum
Debt Instrument [Line Items]
Consolidated ratio							0.05
US Asset Based Lending Credit Agreement
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 150,000
Termination date			Jun. 01, 2026
Asia ABL Facility
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 150,000
Termination date			Jun. 01, 2026
RCF
Debt Instrument [Line Items]
Remaining unamortized debt issuance costs									874
Remaining unamortized debt issuance costs				5,385			$ 5,385
Maximum borrowing capacity				1,000,000			1,000,000
Remaining borrowing capacity				733,866			733,866
Payment of borrowing				$ 180,000			$ 180,000
Maturity date							May 31, 2031
Proceeds from long-term debt borrowings						$ 80,000
Percentage of limitation on pledges of capital stock				65.00%			65.00%
RCF \| Minimum
Debt Instrument [Line Items]
Commitment fee percentage							0.15%
Consolidated ratio							0.025
RCF \| Maximum
Debt Instrument [Line Items]
Commitment fee percentage							0.35%
Consolidated ratio							0.045
RCF \| Letter of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 200,000			$ 200,000
RCF \| 2026 Credit Agreement
Debt Instrument [Line Items]
Remaining borrowing capacity				300,000			$ 300,000
RCF \| 2026 Credit Agreement \| SOFR \| Minimum
Debt Instrument [Line Items]
Interest margin							1.25%
RCF \| 2026 Credit Agreement \| SOFR \| Maximum
Debt Instrument [Line Items]
Interest margin							2.25%
Term Loan due May 2030
Debt Instrument [Line Items]
Total debt				$ 399,000			$ 399,000		$ 342,169
Debt instrument, interest rate				5.65%			5.65%		5.97%
Amended Term Loan Facility
Debt Instrument [Line Items]
Fees and expenses				$ 340,436			$ 340,436
Initial aggregate principal amount							$ 400,000
Maturity date							May 30, 2030
Proceeds from long-term debt borrowings							$ 119,159
Total debt				399,000			$ 399,000
Amended Term Loan Facility \| SOFR
Debt Instrument [Line Items]
Interest margin							1.75%
Amended Term Loan Facility \| Short term debt
Debt Instrument [Line Items]
Total debt				4,000			$ 4,000
Amended Term Loan Facility \| Long term debt
Debt Instrument [Line Items]
Total debt				$ 395,000			$ 395,000
6.750% Senior Notes due 2034
Debt Instrument [Line Items]
Maturity date		Oct. 01, 2034
Total debt		$ 500,000
Debt instrument, interest rate		6.75%
Third Amended and Restated Credit Agreement; Incremental Facilities \| Subsequent Event
Debt Instrument [Line Items]
Purchase price of acquisition	$ 1,100,000