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Summary of Significant Accounting Policies - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Net sales	$ 19,125.2	$ 12,357.4	$ 8,681.7
Canadian resources taxes and royalties included in cost of goods sold	1,000.0	301.5	176.1
Assets related to PIS and Cofins and income tax credits in Brazil	105.0	112.5
Other Affiliates [Member]
Sales And Receivables [Line Items]
Accounts Receivable, Related Parties	$ 244.4	382.5
Minimum | Machinery and equipment
Useful life	3 years
Minimum | Buildings and Leashold Improvements
Useful life	3 years
Maximum
Duration of short term investments in number of days	90 days
Maximum | Machinery and equipment
Useful life	25 years
Maximum | Buildings and Leashold Improvements
Useful life	40 years
Canpotex
Accounting Policies [Abstract]
Net sales	$ 3,000.0	$ 1,100.0	$ 795.2

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