Disposition (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 28, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal		$ 0	$ 0	$ 482
Revenues		$ 39,211	$ 32,218	25,542
Anatomical Pathology business [Member] | Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Consideration	$ 1,130
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal				$ 478
Revenues	$ 115