Derivatives and Fair Value Measurements - Derivatives by Balance Sheet Classification (Details) - Designated as Hedging Instrument - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Asset Derivative
Derivative Asset, Fair Value, Gross Asset	$ 31.3	$ 115.3
Effect of counterparty netting	(30.4)	(100.6)
Variation margin (received) posted	0.0	(11.7)
Net derivatives and variation margin as classified in the balance sheets	0.9	3.0
Liability Derivative
Liability Derivative	(30.4)	(310.3)
Effect of counterparty netting	30.4	100.6
Variation margin (received) posted	0.0	209.7
Net derivatives and variation margin as classified in the balance sheets	0.0	0.0
Foreign currency option contracts
Asset Derivative
Derivative Asset, Fair Value, Gross Asset	0.9	3.0
Liability Derivative
Liability Derivative	0.0	0.0
Derivative contracts related to forecasted sales
Asset Derivative
Derivative Asset, Fair Value, Gross Asset	30.4	100.6
Liability Derivative
Liability Derivative	(15.4)	(310.3)
Financial trading contracts
Asset Derivative
Derivative Asset, Fair Value, Gross Asset	0.0	11.7
Liability Derivative
Liability Derivative	$ (15.0)	$ 0.0