Legal Proceedings (Details) $ in Millions				3 Months Ended			9 Months Ended
	May 06, 2022 USD ($) patent	Apr. 08, 2022 USD ($)	Nov. 30, 2021 USD ($)	Oct. 02, 2022 USD ($)	Jul. 03, 2022 USD ($)	Oct. 03, 2021 USD ($)	Oct. 02, 2022 USD ($)	Oct. 03, 2021 USD ($)
Loss Contingencies [Line Items]
Number of patents invalidated | patent	3
Legal contingency and settlement				$ 11		$ 0	$ (598)	$ 0
GRAIL
Loss Contingencies [Line Items]
Potential fine as a percent of consolidated annual revenues				0.10	0.10
Loss contingency accrual					$ 453
BGI
Loss Contingencies [Line Items]
Amount awarded from settlement			$ 8
Complete Genomics
Loss Contingencies [Line Items]
Loss contingency, damages sought, value		$ 334
Loss contingency, royalty on sales of accused products (as a percent)		5.50%
Loss contingency awarded value	$ 334
Loss contingency, one-time payment agreement	$ 325			$ 325
Former Gain Contingency, Recognized in Current Period				5			$ 5
Amount of payment allocated to release of past damages claimed				150	156
Legal contingency and settlement					$ 6
Complete Genomics | License
Loss Contingencies [Line Items]
Loss contingency, license granted				$ 180
Amortization period (in years)				6 years 6 months