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Pension and Other Post Retirement Benefit Plans - Schedule of Fair Value of Pension Plan Assets (Details) - Pension Plan - USD ($)
$ in Thousands
Sep. 26, 2025
Sep. 27, 2024
Sep. 29, 2023
U.S. Plans      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year $ 276,588 $ 293,828 $ 277,583
U.S. Plans | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 65,358 73,563  
U.S. Plans | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 211,230 220,265  
U.S. Plans | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
U.S. Plans | Investments measured at Net Asset Value      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
U.S. Plans | Equities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 2,725 2,845  
U.S. Plans | Equities | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 2,725 2,845  
U.S. Plans | Equities | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
U.S. Plans | Equities | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
U.S. Plans | Equities | Investments measured at Net Asset Value      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
U.S. Plans | Domestic bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 198,776 217,725  
U.S. Plans | Domestic bonds | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 372 10,081  
U.S. Plans | Domestic bonds | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 198,404 207,644  
U.S. Plans | Domestic bonds | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
U.S. Plans | Domestic bonds | Investments measured at Net Asset Value      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
U.S. Plans | Overseas bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 12,826 12,621  
U.S. Plans | Overseas bonds | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
U.S. Plans | Overseas bonds | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 12,826 12,621  
U.S. Plans | Overseas bonds | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
U.S. Plans | Overseas bonds | Investments measured at Net Asset Value      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
U.S. Plans | Cash and equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 12,169 10,723  
U.S. Plans | Cash and equivalents | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 12,169 10,723  
U.S. Plans | Cash and equivalents | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
U.S. Plans | Cash and equivalents | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
U.S. Plans | Cash and equivalents | Investments measured at Net Asset Value      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
U.S. Plans | Mutual funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 50,092 49,914  
U.S. Plans | Mutual funds | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 50,092 49,914  
U.S. Plans | Mutual funds | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
U.S. Plans | Mutual funds | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
U.S. Plans | Mutual funds | Investments measured at Net Asset Value      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
Non-U.S. Plans      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 1,399,048 1,440,593 1,243,025
Non-U.S. Plans | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 13,473 17,161  
Non-U.S. Plans | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 938,143 1,003,714  
Non-U.S. Plans | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 179,883 186,587  
Non-U.S. Plans | Investments measured at Net Asset Value      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 267,549 233,131  
Non-U.S. Plans | Equities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 68,020 63,612  
Non-U.S. Plans | Equities | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
Non-U.S. Plans | Equities | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 67,365 61,722  
Non-U.S. Plans | Equities | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
Non-U.S. Plans | Equities | Investments measured at Net Asset Value      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 655 1,890  
Non-U.S. Plans | Overseas equities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 127,058 152,900  
Non-U.S. Plans | Overseas equities | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
Non-U.S. Plans | Overseas equities | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 64,253 62,988  
Non-U.S. Plans | Overseas equities | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
Non-U.S. Plans | Overseas equities | Investments measured at Net Asset Value      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 62,805 89,912  
Non-U.S. Plans | Domestic bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 40,342 43,563  
Non-U.S. Plans | Domestic bonds | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
Non-U.S. Plans | Domestic bonds | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 40,342 43,563  
Non-U.S. Plans | Domestic bonds | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
Non-U.S. Plans | Domestic bonds | Investments measured at Net Asset Value      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
Non-U.S. Plans | Overseas bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 757,126 780,097  
Non-U.S. Plans | Overseas bonds | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
Non-U.S. Plans | Overseas bonds | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 610,116 697,585  
Non-U.S. Plans | Overseas bonds | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
Non-U.S. Plans | Overseas bonds | Investments measured at Net Asset Value      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 147,010 82,512  
Non-U.S. Plans | Cash and equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 13,473 17,161  
Non-U.S. Plans | Cash and equivalents | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 13,473 17,161  
Non-U.S. Plans | Cash and equivalents | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
Non-U.S. Plans | Cash and equivalents | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
Non-U.S. Plans | Cash and equivalents | Investments measured at Net Asset Value      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
Non-U.S. Plans | Real estate      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 74,924 93,621  
Non-U.S. Plans | Real estate | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
Non-U.S. Plans | Real estate | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 8,338 12,101  
Non-U.S. Plans | Real estate | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 28,861 42,479 84,755
Non-U.S. Plans | Real estate | Investments measured at Net Asset Value      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 37,725 39,041  
Non-U.S. Plans | Insurance contracts      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 57,132 62,337  
Non-U.S. Plans | Insurance contracts | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
Non-U.S. Plans | Insurance contracts | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
Non-U.S. Plans | Insurance contracts | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 57,132 62,337 87,160
Non-U.S. Plans | Insurance contracts | Investments measured at Net Asset Value      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
Non-U.S. Plans | Hedge funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 113,244 101,547  
Non-U.S. Plans | Hedge funds | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0  
Non-U.S. Plans | Hedge funds | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
Non-U.S. Plans | Hedge funds | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 93,890 81,771 $ 78,617
Non-U.S. Plans | Hedge funds | Investments measured at Net Asset Value      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 19,354 19,776  
Non-U.S. Plans | Mutual funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 147,729 125,755  
Non-U.S. Plans | Mutual funds | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
Non-U.S. Plans | Mutual funds | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 147,729 125,755  
Non-U.S. Plans | Mutual funds | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year 0 0  
Non-U.S. Plans | Mutual funds | Investments measured at Net Asset Value      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets at the end of the year $ 0 $ 0