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Goodwill and Other Intangible Assets (Tables)
 9 Months Ended
Oct. 01, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
Summary of the Changes in Goodwill
A summary of the changes in goodwill for the nine-month period ended October 1, 2023 is as follows: 

Consumer
Packaging		Industrial Paper PackagingAll OtherTotal
Goodwill at December 31, 2022$898,625 $394,826 $381,860 $1,675,311 
Acquisitions— 92,657 — 92,657 
Divestitures— (6,375)— (6,375)
Foreign currency translation(1,022)1,903 (34)847 
Measurement period adjustments439 (468)— (29)
Goodwill at October 1, 2023$898,042 $482,543 $381,826 $1,762,411 
Summary of Other Intangible Assets A summary of other intangible assets as of October 1, 2023 and December 31, 2022 is as follows:    
October 1,
2023		December 31,
2022
Other Intangible Assets, gross:
Patents$45,765 $29,303 
Customer lists1,268,759 1,092,232 
Trade names32,783 34,220 
Proprietary technology56,837 57,720 
Other6,169 6,721 
Total Other Intangible Assets, gross$1,410,313 $1,220,196 
Accumulated Amortization:
Patents$(19,238)$(17,889)
Customer lists(469,913)(417,034)
Trade names(17,328)(15,892)
Proprietary technology(27,763)(25,113)
Other(2,553)(2,670)
Total Accumulated Amortization(536,795)(478,598)
Other Intangible Assets, net$873,518 $741,598