Restructuring and Other Charges (Income) - Summary (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Restructuring and Related Activities [Abstract]
Restructuring charges	$ 2.9	$ 2.0	$ 2.9	$ 16.6
Other charges (income), net	25.3	7.0	45.1	82.3
Total restructuring and other charges (income)	$ 28.2	$ 9.0	$ 48.0	$ 98.9

The aggregate amount provided for estimating restructuring charges, remediation costs, gains on sale of assets, in process research and development acquired as part of an asset acquisition, asset impairment losses and other miscellaneous charges to income during an accounting period. Generally, these items are either unusual or infrequent, but not both (in which case they would be extraordinary items).

No definition available.

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Namespace Prefix:	fmc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration