Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Intangible assets subject to amortization (finite-lived)
Gross	$ 1,242.4	$ 1,228.5
Accumulated Amortization	(381.8)	(354.9)
Net	860.6	873.6
Intangible assets not subject to amortization (indefinite-lived)
Indefinite-lived intangible assets	1,612.1	1,648.3
Finite and Indefinite lived intangible assets, gross	2,854.5	2,876.8
Intangible assets net	2,472.7	2,521.9
Crop Protection Brands
Intangible assets not subject to amortization (indefinite-lived)
Indefinite-lived intangible assets	1,259.1	1,259.1
Brands
Intangible assets not subject to amortization (indefinite-lived)
Indefinite-lived intangible assets	342.9	389.2
In-process research & development
Intangible assets not subject to amortization (indefinite-lived)
Indefinite-lived intangible assets	10.1	0.0
Customer relationships
Intangible assets subject to amortization (finite-lived)
Gross	1,103.2	1,147.1
Accumulated Amortization	(328.0)	(301.3)
Net	775.2	845.8
Patents
Intangible assets subject to amortization (finite-lived)
Gross	1.7	1.8
Accumulated Amortization	(1.3)	(1.3)
Net	0.4	0.5
Brands
Intangible assets subject to amortization (finite-lived)
Gross	14.7	17.1
Accumulated Amortization	(9.4)	(9.9)
Net	5.3	7.2
Purchased and licensed technologies
Intangible assets subject to amortization (finite-lived)
Gross	121.0	60.2
Accumulated Amortization	(41.4)	(40.7)
Net	79.6	19.5
Other intangibles
Intangible assets subject to amortization (finite-lived)
Gross	1.8	2.3
Accumulated Amortization	(1.7)	(1.7)
Net	$ 0.1	$ 0.6