Acquisitions (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 501	$ 3
Sojaprotein and Others
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	501
Business Acquisition, Purchase Price Allocation, Working Capital	11
Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment	85
Goodwill, Acquired During Period	360
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	195
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value	(150)
Payments to Acquire Businesses, Net of Cash Acquired	$ 501
P4
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired	75.00%
Business Acquisition, Goodwill, Expected Tax Deductible Amount	$ 358
Period when fixed multiple of EBITDA is calculated, in months	12 months
P4 | P4
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	25.00%