Inventories (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Oct. 02, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Raw materials		$ 1,922	$ 1,305
Work in process		676	540
Finished goods		2,453	2,184
Inventories		5,051	4,029
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Inventories		5,051	4,029
Value of inventories maintained using the LIFO method			274
Excess of estimated replacement cost over stated LIFO value			49
Product [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of Goods and Services Sold		$ (13,594)	$ (11,407)	$ (10,037)
Change in Accounting Principle, Other
Inventory Disclosure [Abstract]
Inventories	$ 33
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Percentage of LIFO Inventory	5.00%
Inventories	$ 33
Change in Accounting Principle, Other | Product [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of Goods and Services Sold	33
Change in Accounting Principle, Other | Laboratory Products and Biopharma Services [Member]
Inventory Disclosure [Abstract]
Inventories	20
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Inventories	20
Change in Accounting Principle, Other | Laboratory Products and Biopharma Services [Member] | Product [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of Goods and Services Sold	20
Change in Accounting Principle, Other | Specialty Diagnostics [Member]
Inventory Disclosure [Abstract]
Inventories	13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Inventories	13
Change in Accounting Principle, Other | Specialty Diagnostics [Member] | Product [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of Goods and Services Sold	$ 13