Leases - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Feb. 01, 2021	Dec. 31, 2020
Lessee, Lease, Description [Line Items]
Remaining lease term	40 years
Option to extend lease term	5 years
Operating lease liability	$ 697		$ 265
Operating lease right-of-use assets	$ 803		$ 299
Nutrition & Biosciences, Inc
Lessee, Lease, Description [Line Items]
Operating lease liability		$ 530
Operating lease right-of-use assets		$ 530