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Goodwill and Other Intangible Assets (Tables)
 3 Months Ended
Mar. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of the Changes in Goodwill
A summary of the changes in goodwill for the three-month period ended March 30, 2025 is as follows: 

Consumer
Packaging		Industrial Paper PackagingAll OtherTotal
Goodwill at December 31, 2024$1,807,971 $486,636 $231,050 $2,525,657 
Measurement period adjustments595 — — 595 
Foreign currency translation58,441 7,543 (3,033)62,951 
Goodwill at March 30, 2025$1,867,007 $494,179 $228,017 $2,589,203 
Schedule of Other Intangible Assets
A summary of other intangible assets as of March 30, 2025 and December 31, 2024 is as follows:    
March 30,
2025		December 31,
2024
Other Intangible Assets, gross:
Patents$29,154 $28,941 
Customer lists2,753,526 2,679,372 
Trade names39,253 38,623 
Proprietary technology229,475 226,936 
Other7,790 2,339 
Total Other Intangible Assets, gross$3,059,198 $2,976,211 
Accumulated Amortization:
Patents$(16,566)$(15,955)
Customer lists(370,648)(332,680)
Trade names(14,236)(13,239)
Proprietary technology(32,080)(26,203)
Other(1,707)(1,436)
Total Accumulated Amortization(435,237)(389,513)
Other Intangible Assets, net$2,623,961 $2,586,698