v3.26.3
CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
shares in Millions, $ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Income Statement [Abstract]        
Net revenues $ 3,097 $ 2,816 $ 9,035 $ 8,229
Operating costs and expenses and other operating income:        
Cost of services 2,055 1,867 6,024 5,474
Selling, general and administrative 523 501 1,556 1,463
Amortization of intangible assets 37 39 112 117
Other operating expense, net 3 23 6 5
Total operating costs and expenses, net 2,618 2,430 7,698 7,059
Operating income 479 386 1,337 1,170
Other income (expense):        
Interest expense, net (61) (66) (187) (200)
Other (expense) income, net (2) 8 12 18
Total non-operating expense, net (63) (58) (175) (182)
Income before income taxes and equity in earnings of equity method investees 416 328 1,162 988
Income tax expense (99) (77) (261) (233)
Equity in earnings of equity method investees, net of taxes 9 8 23 35
Net income 326 259 924 790
Less: Net income attributable to noncontrolling interests 14 14 40 43
Net income attributable to Quest Diagnostics $ 312 $ 245 $ 884 $ 747
Earnings per share attributable to Quest Diagnostics’ common stockholders:        
Basic (in dollars per share) $ 2.82 $ 2.18 $ 7.97 $ 6.66
Diluted (in dollars per share) $ 2.78 $ 2.16 $ 7.86 $ 6.57
Weighted average common shares outstanding:        
Basic (in shares) 110 112 110 112
Diluted (in shares) 112 113 112 113