Acquisitions and Divestitures - Divestitures (Details) - USD ($) shares in Millions, $ in Millions	1 Months Ended		3 Months Ended	9 Months Ended
	Sep. 30, 2022	Jul. 31, 2022	Sep. 30, 2022	Sep. 30, 2022
Business Acquisition [Line Items]
Value of common shares			$ 1,988	$ 1,988
NEOGEN Corporation
Business Acquisition [Line Items]
Ownership interest (as a percent)	50.10%		50.10%	50.10%
Discontinued Operations, Disposed of by Means Other than Sale, Spinoff | Health Care
Business Acquisition [Line Items]
Ownership interest after spinoff (as a percent)		19.90%
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations | Food Safety Division
Business Acquisition [Line Items]
Pre-tax gain on divestitures	$ 2,700
Aggregate consideration	2,800		$ 2,800	$ 2,800
Value of shares exchanged	1,000		1,000	1,000
Value of shares exchanged, net of adjustments	$ 828		$ 828	$ 828
Reduction of outstanding shares	16		16	16
Value of common shares	$ 2,000
Special cash payment received	478		$ 478	$ 478
Value of noncash debt exchange	$ 350		$ 350	$ 350