Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Intangible assets subject to amortization (finite-lived)
Gross	$ 1,324.9	$ 1,321.2
Accumulated Amortization	(526.4)	(476.7)
Net	798.5	844.5
Intangible assets not subject to amortization (indefinite-lived)
Indefinite-lived intangible assets	1,623.2	1,620.6
Intangible assets, gross	2,948.1	2,941.8
Intangible assets net	2,421.7	2,465.1
Crop Protection Brands
Intangible assets not subject to amortization (indefinite-lived)
Indefinite-lived intangible assets	1,259.0	1,259.0
Brands
Intangible assets not subject to amortization (indefinite-lived)
Indefinite-lived intangible assets	352.8	350.3
In-process research & development
Intangible assets not subject to amortization (indefinite-lived)
Indefinite-lived intangible assets	11.4	11.3
Customer relationships
Intangible assets subject to amortization (finite-lived)
Gross	1,139.4	1,136.7
Accumulated Amortization	(455.4)	(414.2)
Net	684.0	722.5
Patents
Intangible assets subject to amortization (finite-lived)
Gross	1.7	1.8
Accumulated Amortization	(1.7)	(1.6)
Net	0.0	0.2
Brands
Intangible assets subject to amortization (finite-lived)
Gross	49.5	49.3
Accumulated Amortization	(19.0)	(12.9)
Net	30.5	36.4
Purchased and licensed technologies
Intangible assets subject to amortization (finite-lived)
Gross	131.9	131.1
Accumulated Amortization	(48.5)	(46.2)
Net	83.4	84.9
Other intangibles
Intangible assets subject to amortization (finite-lived)
Gross	2.4	2.3
Accumulated Amortization	(1.8)	(1.8)
Net	$ 0.6	$ 0.5

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