Goodwill and Other Intangible Assets Goodwill by Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Goodwill [Line Items]
Goodwill Beginning Balance	$ 10,408	$ 10,605
Currency Translation Adjustment	57	(235)
Other goodwill adjustments		38
Goodwill Ending Balance	10,465	10,408
Accumulated impairment losses on goodwill	4,503
Crop Protection [Member]
Goodwill [Line Items]
Goodwill Beginning Balance	5,082	5,183
Currency Translation Adjustment	71	(139)
Other goodwill adjustments		38
Goodwill Ending Balance	5,153	5,082
Seed [Member]
Goodwill [Line Items]
Goodwill Beginning Balance	5,326	5,422
Currency Translation Adjustment	(14)	(96)
Other goodwill adjustments		0
Goodwill Ending Balance	$ 5,312	$ 5,326