Pension and Other Post Retirement Benefit Plans - Schedule of Changes in the Fair Value of Plans' Level 3 Assets (Details) - Pension Plan - Non-U.S. Plans - USD ($) $ in Thousands	12 Months Ended
Sep. 26, 2025	Sep. 27, 2024
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at the beginning of the year	$ 1,440,593	$ 1,243,025
Effect of exchange rate changes	45,682	171,435
Fair value of plan assets at the end of the year	1,399,048	1,440,593
Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at the beginning of the year	186,587
Fair value of plan assets at the end of the year	179,883	186,587
Real estate investments
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at the beginning of the year	93,621
Fair value of plan assets at the end of the year	74,924	93,621
Real estate investments \| Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at the beginning of the year	42,479	84,755
Net purchases, sales, and settlements	(15,055)	(59,738)
Realized and unrealized losses	104	3,993
Effect of exchange rate changes	1,333	13,469
Fair value of plan assets at the end of the year	28,861	42,479
Insurance contracts
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at the beginning of the year	62,337
Fair value of plan assets at the end of the year	57,132	62,337
Insurance contracts \| Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at the beginning of the year	62,337	87,160
Net purchases, sales, and settlements	(3,937)	(31,262)
Realized and unrealized losses	(1,495)	2,923
Effect of exchange rate changes	227	3,516
Fair value of plan assets at the end of the year	57,132	62,337
Hedge funds
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at the beginning of the year	101,547
Fair value of plan assets at the end of the year	113,244	101,547
Hedge funds \| Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at the beginning of the year	81,771	78,617
Net purchases, sales, and settlements	(238)	(19,567)
Realized and unrealized losses	6,675	7,532
Effect of exchange rate changes	5,682	15,189
Fair value of plan assets at the end of the year	$ 93,890	$ 81,771

Amount, measured using unobservable inputs, of increase (decrease) in plan assets of defined benefit plan from actual return (loss) on assets still held.

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-Topic 715
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) plan assets of defined benefit plan.

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Amount, measured using unobservable input, of increase (decrease) in plan asset of defined benefit plan from purchase, sale and settlement of trade associated with underlying investment.

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