Earnings per Share (Tables)

6 Months Ended

Jun. 29, 2024

Earnings Per Share [Abstract]

Schedule of Earnings Per Share

	Three months ended				Six months ended
	June 29,		July 1,		June 29,		July 1,
(In millions except per share amounts)	2024		2023		2024		2023
Net income attributable to Thermo Fisher Scientific Inc.	$	1,548	$	1,361	$	2,875	$	2,650
Basic weighted average shares	382		386		382		386
Plus effect of: stock options and restricted stock units	1		2		1		2
Diluted weighted average shares	383		388		383		388
Basic earnings per share	$	4.05	$	3.53	$	7.53	$	6.86
Diluted earnings per share	$	4.04	$	3.51	$	7.50	$	6.83
Antidilutive stock options excluded from diluted weighted average shares	2		2		2		2