Equity - Additional Information (Details) - USD ($)			12 Months Ended
		Jan. 16, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Nov. 01, 2017
Subsequent Event [Line Items]
Dividends paid	[1]		$ 210,300,000	$ 89,200,000	$ 88,800,000
Repurchase of shares (in shares)			414,300,000	$ 206,800,000	$ 2,400,000
Subsequent Event
Subsequent Event [Line Items]
Dividends		$ 57,000,000.0
Repurchase Program
Subsequent Event [Line Items]
Repurchase of shares (in shares)			4,700,000
Remaining authorized shares under repurchase program			$ 600,000,000
FMC Lithium
Subsequent Event [Line Items]
Controlling interest						84.00%
DuPont
Subsequent Event [Line Items]
Controlling interest						80.00%

[1] See Note 17 regarding our quarterly cash dividend.