v3.26.1
BUSINESS ACQUISITIONS (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 28, 2026
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Business Combination [Abstract]          
Business Combination, Consideration Transferred       $ 528.6  
Business Combination [Line Items]          
Business Combination, Consideration Transferred, Liabilities Incurred       (75.7) $ (24.0)
Intangible Asset, Finite-Lived, Acquired       288.2  
Payments to Acquire Businesses, Net of Cash Acquired       427.9 63.5
Business Combination, Pro Forma Information [Line Items]          
Business Combination, Pro Forma Information, Pro Forma Revenue   $ 3,734.1 $ 3,582.7 7,296.3 7,004.9
Business Combination, Pro Forma Information, Pro Forma Income (Loss), after Tax   299.8 $ 245.4 584.7 $ 472.4
Customer Relationships [Member]          
Business Combination [Line Items]          
Intangible Asset, Finite-Lived, Acquired       $ 239.3  
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life       15 years  
Noncompete Agreements [Member]          
Business Combination [Line Items]          
Intangible Asset, Finite-Lived, Acquired       $ 48.9  
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life       5 years  
Empire City Laboratories, Inc.          
Business Combination [Line Items]          
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment, Equipment   0.0   $ 0.0  
Business Combination, Goodwill, Expected Tax Deductible, Amount   117.5   117.5  
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill   132.5   132.5  
Business Combination, Recognized Asset Acquired, Asset   250.0   250.0  
Business Combination, Recognized Liability Assumed, Accounts Payable, Current   0.0   0.0  
Business Combination, Recognized Liability Assumed, Liability, Current   0.0   0.0  
Business Combination, Recognized Liability Assumed, Liability, Current   0.0   0.0  
Business Combination, Recognized Liability Assumed, Deferred Tax Liability   0.0   0.0  
Business Combination, Recognized Liability Assumed, Lease Obligation   0.0   0.0  
Business Combination, Recognized Liability Assumed, Liability   0.0   0.0  
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less)   250.0   250.0  
Business Combination, Consideration Transferred, Liabilities Incurred       (85.0)  
Escrow Deposit   0.0   0.0  
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill   165.0   165.0  
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent   0.0   0.0  
Business Combination, Recognized Asset Acquired, Receivable, Current   0.0   0.0  
Parkview Health Systems, Inc. [Member]          
Business Combination [Line Items]          
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment, Equipment   0.0   0.0  
Business Combination, Goodwill, Expected Tax Deductible, Amount   77.5   77.5  
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill   87.5   87.5  
Business Combination, Recognized Asset Acquired, Asset   165.0   165.0  
Business Combination, Recognized Liability Assumed, Accounts Payable, Current   0.0   0.0  
Business Combination, Recognized Liability Assumed, Liability, Current   0.0   0.0  
Business Combination, Recognized Liability Assumed, Liability, Current   0.0   0.0  
Business Combination, Recognized Liability Assumed, Deferred Tax Liability   0.0   0.0  
Business Combination, Recognized Liability Assumed, Lease Obligation   0.0   0.0  
Business Combination, Recognized Liability Assumed, Liability   0.0   0.0  
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less)   165.0   165.0  
Business Combination, Consideration Transferred, Liabilities Incurred       0.0  
Escrow Deposit   (5.0)   (5.0)  
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill   160.0   160.0  
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent   0.0   0.0  
Business Combination, Recognized Asset Acquired, Receivable, Current   0.0   0.0  
Other acquirees          
Business Combination [Line Items]          
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment, Equipment   2.8   2.8  
Business Combination, Goodwill, Expected Tax Deductible, Amount   68.1   68.1  
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill   68.2   68.2  
Business Combination, Recognized Asset Acquired, Asset   143.1   143.1  
Business Combination, Recognized Liability Assumed, Accounts Payable, Current   2.5   2.5  
Business Combination, Recognized Liability Assumed, Liability, Current   1.7   1.7  
Business Combination, Recognized Liability Assumed, Liability, Current   0.9   0.9  
Business Combination, Recognized Liability Assumed, Deferred Tax Liability   7.5   7.5  
Business Combination, Recognized Liability Assumed, Lease Obligation   2.4   2.4  
Business Combination, Recognized Liability Assumed, Liability   15.0   15.0  
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less)   128.1   128.1  
Business Combination, Consideration Transferred, Liabilities Incurred       (4.8)  
Escrow Deposit   (20.0)   (20.0)  
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill   103.3   103.3  
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent   0.4   0.4  
Business Combination, Recognized Asset Acquired, Receivable, Current   3.6   3.6  
Measurement Period Adjustments          
Business Combination [Line Items]          
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment, Equipment   0.0   0.0  
Business Combination, Goodwill, Expected Tax Deductible, Amount   (1.0)   (1.0)  
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill   (13.1)   (13.1)  
Business Combination, Recognized Asset Acquired, Asset   (14.1)   (14.1)  
Business Combination, Recognized Liability Assumed, Accounts Payable, Current   0.0   0.0  
Business Combination, Recognized Liability Assumed, Liability, Current   0.0   0.0  
Business Combination, Recognized Liability Assumed, Liability, Current   0.0   0.0  
Business Combination, Recognized Liability Assumed, Deferred Tax Liability   0.0   0.0  
Business Combination, Recognized Liability Assumed, Lease Obligation   0.0   0.0  
Business Combination, Recognized Liability Assumed, Liability   0.0   0.0  
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less)   (14.1)   (14.1)  
Business Combination, Consideration Transferred, Liabilities Incurred       14.1  
Escrow Deposit   0.0   0.0  
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill   0.0   0.0  
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent   0.0   0.0  
Business Combination, Recognized Asset Acquired, Receivable, Current   0.0   0.0  
Total business acquisitions and adjustments          
Business Combination [Line Items]          
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment, Equipment   2.8   2.8  
Business Combination, Goodwill, Expected Tax Deductible, Amount   262.1   262.1  
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill   275.1   275.1  
Business Combination, Recognized Asset Acquired, Asset   544.0   544.0  
Business Combination, Recognized Liability Assumed, Accounts Payable, Current   2.5   2.5  
Business Combination, Recognized Liability Assumed, Liability, Current   1.7   1.7  
Business Combination, Recognized Liability Assumed, Liability, Current   0.9   0.9  
Business Combination, Recognized Liability Assumed, Deferred Tax Liability   7.5   7.5  
Business Combination, Recognized Liability Assumed, Lease Obligation   2.4   2.4  
Business Combination, Recognized Liability Assumed, Liability   15.0   15.0  
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less)   529.0   529.0  
Business Combination, Consideration Transferred, Liabilities Incurred       (75.7)  
Escrow Deposit   (25.0)   (25.0)  
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill   428.3   428.3  
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent   0.4   0.4  
Business Combination, Recognized Asset Acquired, Receivable, Current   $ 3.6   $ 3.6  
Outreach laboratory services business          
Business Combination [Line Items]          
Payments to Acquire Businesses, Gross $ 155.0