Shareholders' Equity and Long-Term Incentive Compensation - Summary of Reclassified Components of AOCI (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Amounts reclassified from each component of accumulated comprehensive income
Gain (loss) from discontinued operations, net of tax	$ 366.4	$ 25.2	$ (5.4)
Interest expense	13.3	18.4	21.0
Income from continuing operations before income taxes	(69.9)	(78.6)	(88.8)
Income tax provision	10.9	4.8	12.5
Other expense, net	(9.0)	0.1	5.2
Net income (loss)	(425.4)	(99.0)	$ (65.3)
(Gains) losses on qualifying cash flow hedges | Amount Reclassified from AOCI
Amounts reclassified from each component of accumulated comprehensive income
Income from continuing operations before income taxes	(0.6)	3.8
Income tax provision	0.2	(0.9)
Net income (loss)	(0.4)	2.9
(Gains) losses on qualifying cash flow hedges | Amount Reclassified from AOCI | Commodity contracts
Amounts reclassified from each component of accumulated comprehensive income
Gain (loss) from discontinued operations, net of tax	(3.8)	(0.9)
(Gains) losses on qualifying cash flow hedges | Amount Reclassified from AOCI | Swaps
Amounts reclassified from each component of accumulated comprehensive income
Interest expense	3.2	4.7
Pension and postretirement items: | Amount Reclassified from AOCI
Amounts reclassified from each component of accumulated comprehensive income
Income tax provision	1.2	1.2
Other expense, net	(4.8)	(4.8)
Net income (loss)	(3.6)	(3.6)
Loss on reclassification of foreign currency translation adjustments | Amount Reclassified from AOCI
Amounts reclassified from each component of accumulated comprehensive income
Gain (loss) from discontinued operations, net of tax	(19.9)	0.0
Income tax provision	0.0	0.0
Net income (loss)	$ 19.9	$ 0.0