v3.26.1
Description of the Plan (Details) - EBP 333
1 Months Ended 12 Months Ended
Jan. 31, 2025
Dec. 31, 2025
USD ($)
loan
Dec. 31, 2024
USD ($)
EBP, Description of Plan [Line Items]      
Pretax, minimum annual compensation to total compensation, percentage   1.00%  
Pretax, maximum annual compensation to total compensation, percentage   35.00%  
Matching percentage   100.00%  
Participant compensation matched, percentage   5.00%  
Participant compensation matched, minimum service period   12 months  
Investments, at fair value   $ 6,158,117,000 $ 5,483,306,000
Minimum borrowing, amount   1,000  
Maximum borrowing, amount   $ 50,000  
Maximum borrowing, to total account, percentage   50.00%  
Maximum number of loans outstanding | loan   1  
General loan, borrowing term   5 years  
Primary residence, borrowing term   30 years  
Percent of vested account balance to secure loans 50.00%    
Basis spread on variable rate   1.00%  
Notes receivable from participants   $ 70,137,000 70,809,000
Minimum      
EBP, Description of Plan [Line Items]      
Participant loan, interest rate   3.25%  
Maximum      
EBP, Description of Plan [Line Items]      
Participant loan, interest rate   10.50%  
Level 1      
EBP, Description of Plan [Line Items]      
Investments, at fair value   $ 809,717,000 782,256,000
Total      
EBP, Description of Plan [Line Items]      
Investments, at fair value   $ 809,717,000 782,333,000
Quest Diagnostics common stock      
EBP, Description of Plan [Line Items]      
Maximum contribution to investment, percentage   25.00%  
Maximum percent of transfer of account balance   25.00%  
Investments, at fair value   $ 310,165,000 295,103,000
Cost of purchase   0  
Proceeds of dispositions   29,226,000  
Quest Diagnostics common stock | Level 1      
EBP, Description of Plan [Line Items]      
Investments, at fair value   $ 310,165,000 $ 295,103,000