v3.26.1
Fair Value Measurements (Narrative) (Details) - USD ($)
$ in Thousands
6 Months Ended
Jul. 05, 2026
Jun. 29, 2025
Apr. 05, 2026
Dec. 28, 2025
Mar. 30, 2025
Dec. 29, 2024
Mar. 13, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value $ 15,442 $ 21,090 $ 25,011 $ 17,869 $ 19,740 $ 21,753  
Unamortized Debt Issuance Expense 14,881            
Debt Instrument, Unamortized Discount (2,069)            
Payment for Contingent Consideration Liability, Financing Activities 350 $ 1,978          
Analytical, Food and Enterprise Services businesses [Member]              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Disposal Group, Consideration, Contingent on Exit Valuation             $ 150,000
2.55 Percent Senior Unsecured Notes due in 2031 [Member]              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Unamortized Debt Issuance Expense 1,763            
Debt Instrument, Unamortized Discount (67)            
3.625 Percent Senior Unsecured Notes due in 2051 [Member]              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Unamortized Debt Issuance Expense 3,917            
Debt Instrument, Unamortized Discount (3)            
1.875 Percent Ten Year Senior Unsecured Notes [Member]              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Unamortized Debt Issuance Expense 20            
Debt Instrument, Unamortized Discount (24)            
3.3 Percent Ten Year Senior Unsecured Notes due in Sept 2029 [Member]              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Unamortized Debt Issuance Expense 2,811            
Debt Instrument, Unamortized Discount (1,014)            
Quoted Prices In Active Markets (Level 1) [Member] | Fair Value, Recurring [Member]              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value 0     0      
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value 0     0      
Significant Other Observable Inputs (Level 2) [Member]              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Long-term Debt 2,633,094            
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Recurring [Member]              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value 0     0      
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value 0     0      
Significant Other Observable Inputs (Level 2) [Member] | 2.55 Percent Senior Unsecured Notes due in 2031 [Member]              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Long-term Debt 398,170            
Significant Other Observable Inputs (Level 2) [Member] | 3.625 Percent Senior Unsecured Notes due in 2051 [Member]              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Long-term Debt 396,080            
Significant Other Observable Inputs (Level 2) [Member] | 3.3 Percent Ten Year Senior Unsecured Notes due in Sept 2029 [Member]              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Long-term Debt 846,175            
Significant Other Observable Inputs (Level 2) [Member] | Senior Unsecured Notes [Member]              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Long-term Debt 3,207,700     3,222,900      
Unsecured senior notes, fair value 2,928,800     2,963,700      
Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Recurring [Member]              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value 15,442     17,869      
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value $ 14,890     $ 14,890