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ACQUISITIONS AND DIVESTITURES - Narrative (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Jan. 27, 2023
Dec. 20, 2022
Apr. 05, 2022
Oct. 12, 2021
Jun. 28, 2021
Mar. 30, 2021
Mar. 29, 2021
Mar. 03, 2021
Dec. 31, 2020
Aug. 06, 2020
Jan. 03, 2020
Dec. 25, 2021
Dec. 31, 2022
Dec. 25, 2021
Dec. 26, 2020
Business Acquisition [Line Items]                              
Goodwill                       $ 2,711,881 $ 2,849,903 $ 2,711,881  
Transaction and integration costs                         8,740 39,099 $ 10,014
Gain on sale of business                         123,405 25,026 0
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Avian                              
Business Acquisition [Line Items]                              
Consideration received from divestiture   $ 169,000                          
Contingent consideration   30,000                     10,000    
Gain on sale of business   $ 123,400                          
Disposal Group, Disposed of by Sale, Not Discontinued Operations | RMS Japan                              
Business Acquisition [Line Items]                              
Consideration received from divestiture       $ 70,900                      
Gain on sale of business                       $ 20,000      
Cash proceeds from divestiture       7,900                      
Pension over funding and other post-closing adjustments       3,800                      
Disposal Group, Disposed of by Sale, Not Discontinued Operations | CDMO Sweden                              
Business Acquisition [Line Items]                              
Consideration received from divestiture       59,600                      
Contingent consideration       15,300                 7,500    
Cash proceeds from divestiture       200                      
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Maximum | CDMO Sweden                              
Business Acquisition [Line Items]                              
Contingent consideration       25,000                      
Purchase obligation       $ 10,000                      
SAMDI Tech, Inc | Subsequent Event                              
Business Acquisition [Line Items]                              
Purchase price $ 60,000                            
Business combination, step acquisition, equity interest in acquiree, percentage 20.00%                            
Explora BioLabs                              
Business Acquisition [Line Items]                              
Purchase price allocation     $ 284,521                        
Cash acquired     6,600                        
Goodwill     215,752                        
Definite-lived intangible assets     $ 70,100                        
Weighted average life     12 years                        
Property, plant and equipment     $ 37,369                        
Vigene Biosciences, Inc.                              
Business Acquisition [Line Items]                              
Purchase price         $ 323,900                    
Purchase price allocation         323,879                    
Cash acquired         2,700                    
Contingent consideration         34,500               0    
Goodwill         239,681                    
Definite-lived intangible assets         $ 93,900                    
Weighted average life         11 years                    
Property, plant and equipment         $ 7,649                    
Vigene Biosciences, Inc. | Maximum                              
Business Acquisition [Line Items]                              
Consideration contingent upon future performance         $ 57,500                    
Retrogenix Limited                              
Business Acquisition [Line Items]                              
Purchase price           $ 53,900                  
Purchase price allocation           53,921                  
Cash acquired           8,500                  
Contingent consideration           6,900                  
Goodwill           34,489                  
Definite-lived intangible assets           $ 22,126                  
Weighted average life           11 years                  
Property, plant and equipment           $ 400                  
Cognate BioServices, Inc.                              
Business Acquisition [Line Items]                              
Purchase price             $ 877,900                
Purchase price allocation             877,865                
Cash acquired             70,500                
Value of consideration not acquired             $ 15,700                
Ownership percentage not acquired             2.00%                
Goodwill             $ 611,555                
Definite-lived intangible assets             $ 270,900                
Weighted average life             13 years                
Property, plant and equipment             $ 52,082                
Distributed Bio, Inc.                              
Business Acquisition [Line Items]                              
Purchase price                 $ 97,000            
Purchase price allocation                 97,030            
Cash acquired                 800            
Contingent consideration                 14,100       0    
Cash portion of consideration transferred                 80,800            
Payments to settle promissory note                 3,000            
Payment for contingent consideration                         7,000    
Goodwill                 71,585            
Definite-lived intangible assets                 $ 24,540            
Weighted average life                 7 years            
Property, plant and equipment                 $ 2,382            
Distributed Bio, Inc. | Maximum                              
Business Acquisition [Line Items]                              
Consideration contingent upon future performance                 $ 21,000            
Other Acquisitions                              
Business Acquisition [Line Items]                              
Purchase price               $ 35,400              
Contingent consideration               15,900         $ 0    
Consideration contingent upon future performance               17,500              
Cash portion of consideration transferred               19,500             5,500
Goodwill               17,300              
Definite-lived intangible assets               $ 15,200              
Weighted average life               4 years              
Property, plant and equipment               $ 3,000              
Cellero, LLC                              
Business Acquisition [Line Items]                              
Purchase price                   $ 36,900          
Purchase price allocation                   36,850          
Cash acquired                   500          
Goodwill                   19,457          
Definite-lived intangible assets                   $ 16,230          
Weighted average life                   12 years          
Property, plant and equipment                   $ 1,648          
HemaCare Corporation                              
Business Acquisition [Line Items]                              
Purchase price                     $ 376,700        
Purchase price allocation                     376,721        
Cash acquired                     3,100        
Goodwill                     210,196        
Definite-lived intangible assets                     $ 183,540        
Weighted average life                     18 years        
Property, plant and equipment                     $ 10,033        
Cognate BioServices, Inc. and Viegene Biosciences, Inc. | Depreciation and Amortization Expense                              
Business Acquisition [Line Items]                              
Adjustments to purchase price                           24,500 24,200
Cognate BioServices, Inc. and Viegene Biosciences, Inc. | Interest expense                              
Business Acquisition [Line Items]                              
Adjustments to purchase price                           $ 5,600 $ 10,400