Commitments and Contingencies - Additional Information (Detail)			3 Months Ended			12 Months Ended
	Mar. 11, 2020 USD ($)	Oct. 29, 2019 USD ($)	Mar. 31, 2021 USD ($) Facility	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Feb. 01, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 16, 2020 USD ($)	Dec. 31, 2017 USD ($)
Commitments And Contingencies [Line Items]
Bank guarantees related to appeals on income tax and indirect tax cases			$ 13,000,000
Available lines of credit			6,295,000,000
Property, Plant and Equipment, Net			4,587,000,000			$ 1,458,000,000
Bank guarantees and pledged assets to pursue defenses related to other contingencies			20,000,000
Line of Credit Facility, Current Borrowing Amount/Total Amount Drawn Down			109,000,000
Bank Guarantees, Amount Outstanding			111,000,000
Commercial Guarantees, Amount Outstanding			33,000,000
Pledged assets
Commitments And Contingencies [Line Items]
The amount of pledged assets, principally PP&E to cover income tax and indirect tax assessments			7,000,000
Bank Guarantees, Commercial Guarantees, Standby Letters Of Credit and Surety Bonds
Commitments And Contingencies [Line Items]
Bank Guarantees, Commercial Guarantees, Letters Of Credit and Surety Bonds Outstanding			1,985,000,000
Zhejiang Ingredients Plant
Commitments And Contingencies [Line Items]
Gain Contingency, Expected Relocation Payments									$ 13,000,000		$ 50,000,000
Gain Contingency, Relocation Payments Received							$ 30,000,000
Minimum
Commitments And Contingencies [Line Items]
Estimation of possible loss			0
Maximum
Commitments And Contingencies [Line Items]
Estimation of possible loss			28,000,000
Amended credit facility | Citibank, N.A.
Commitments And Contingencies [Line Items]
Line of credit facility, maximum borrowing capacity			1,098,000,000.000
CHINA
Commitments And Contingencies [Line Items]
Property, Plant and Equipment, Net			$ 289,000,000
Number of facilities | Facility			10
CHINA | Guangzhou Flavors Plant
Commitments And Contingencies [Line Items]
Property, Plant and Equipment, Net			$ 60,000,000
CHINA | Guangzhou Fragrance Plant
Commitments And Contingencies [Line Items]
Property, Plant and Equipment, Net			$ 9,000,000
Nutrition & Biosciences, Inc | Senior Unsecured Term Loan Facilities | Unsecured Debt
Commitments And Contingencies [Line Items]
Debt face amount								$ 1,250,000,000
Nutrition & Biosciences, Inc | Senior Unsecured Notes | Unsecured Debt
Commitments And Contingencies [Line Items]
Debt face amount								$ 6,250,000,000		$ 6,250,000,000
BRAZIL | Foreign Tax Authority
Commitments And Contingencies [Line Items]
Proceeds from Income Tax Refunds				$ 4,000,000	$ 8,000,000
BRAZIL | Foreign Tax Authority | BRAZIL
Commitments And Contingencies [Line Items]
Proceeds from Income Tax Refunds						$ 3,000,000
Chief Executive Officer
Commitments And Contingencies [Line Items]
Deferred Compensation Arrangement with Individual, Compensation Expense	$ 20,000,000	$ 20,000,000