SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Joint Venture (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 30, 2023
Business Combination [Line Items]
Proceeds from sale of noncontrolling interest	$ 0	$ 0	$ 215,799
Cash and cash equivalents	926,267	625,860
Joint Venture with Reliance
Business Combination [Line Items]
Proceeds from sale of noncontrolling interest		$ 216,000
Cash and cash equivalents	$ 215,000
RSBVL | Joint Venture with Reliance
Business Combination [Line Items]
Business Combination, Voting Equity Interest Acquired, Percentage		50.10%
Sanmina | Joint Venture with Reliance
Business Combination [Line Items]
Business Combination, Voting Equity Interest Acquired, Percentage		49.90%