Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2022	Apr. 03, 2021
Comprehensive income
Net income	$ 2,220	$ 2,337
Currency translation adjustment:
Currency translation adjustment (net of tax provision (benefit) of $89 and $118)	(23)	224
Unrealized gains and losses on hedging instruments:
Reclassification adjustment for losses included in net income (net of tax benefit of $0 and $4)	1	13
Pension and other postretirement benefit liability adjustments:
Pension and other postretirement benefit liability adjustments arising during the period (net of tax (provision) benefit of $(1) and $(2))	3	6
Amortization of net loss included in net periodic pension cost (net of tax benefit of $1 and $1)	2	2
Total other comprehensive items	(17)	245
Comprehensive income	2,203	2,582
Less: comprehensive income/(loss) attributable to noncontrolling interests and redeemable noncontrolling interest	2	0
Comprehensive income attributable to Thermo Fisher Scientific Inc.	$ 2,201	$ 2,582