Segment Reporting Segment Information (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020		Dec. 31, 2019		Jun. 01, 2019
Segment Reporting Information [Line Items]
Net Sales		$ 15,655	$ 14,217		$ 13,846
Segment Operating EBITDA	[1]	2,714	2,212		2,106
Depreciation and Amortization					1,599
Segment Assets		35,698	36,850	[2]	38,879	[2]
Investments in nonconsolidated affiliates		76	66
Payments to Acquire Property, Plant, and Equipment					1,163
Goodwill		10,107	10,269		10,229
Reallocation of goodwill [Member]
Segment Reporting Information [Line Items]
Goodwill							$ 3,382
Operating Segments [Member]
Segment Reporting Information [Line Items]
Depreciation and Amortization		1,243	1,177		1,000
Investments in nonconsolidated affiliates		76	66		66
Payments to Acquire Property, Plant, and Equipment		573	475		666
Seed [Member]
Segment Reporting Information [Line Items]
Net Sales		8,402	7,756		7,590
Segment Operating EBITDA		1,512	1,208		1,040
Depreciation and Amortization		866	798		628
Segment Assets		23,270	23,751	[2]	25,387
Investments in nonconsolidated affiliates		29	22		27
Payments to Acquire Property, Plant, and Equipment		237	225		373
Goodwill		5,435	5,524		5,486
Crop Protection [Member]
Segment Reporting Information [Line Items]
Net Sales		7,253	6,461		6,256
Segment Operating EBITDA		1,202	1,004		1,066
Depreciation and Amortization		377	379		372
Segment Assets		12,428	13,099	[2]	13,492
Investments in nonconsolidated affiliates		47	44		39
Payments to Acquire Property, Plant, and Equipment		336	250		293
Goodwill		$ 4,672	$ 4,745		$ 4,743

[1] The year ended December 31, 2019 is presented on a pro forma basis, prepared in accordance with Article 11 of Regulation S-X that was in effect prior to recent amendments.

[2] On June 1, 2019, as a result of changes in reportable segments, $3,382 million of goodwill was reallocated from the seed reportable segment to the crop protection reportable segment. This change was not reflected in segment assets prior to June 1, 2019.