Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance		$ (725.2)	$ (991.7)
OCI before reclassifications		(12.5)	11.2
Amounts reclassified from AOCI		6.7	20.0
Net current-period OCI		(5.8)	31.2
Ending balance		(731.0)	(960.5)
Increase (Decrease) in Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance		7.7	26.0
OCI before reclassifications		4.4	0.7
Amounts reclassified from AOCI		0.0	0.0
Net current-period OCI		4.4	0.7
Ending balance		12.1	26.7
Post- retirement benefit plans [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance		(736.1)	(947.7)
OCI before reclassifications		0.0	0.0
Amounts reclassified from AOCI	[1]	12.1	14.5
Net current-period OCI		12.1	14.5
Ending balance		(724.0)	(933.2)
Increase (Decrease) in Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance		0.0	0.0
OCI before reclassifications		0.0	0.0
Amounts reclassified from AOCI		0.0	0.0
Net current-period OCI		0.0	0.0
Ending balance		0.0	0.0
Currency translation adjustment [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance		(70.1)	(64.9)
OCI before reclassifications		(1.1)	(7.5)
Amounts reclassified from AOCI	[2]	0.0	0.0
Net current-period OCI		(1.1)	(7.5)
Ending balance		(71.2)	(72.4)
Increase (Decrease) in Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance		7.7	26.0
OCI before reclassifications		4.4	0.7
Amounts reclassified from AOCI	[2]	0.0	0.0
Net current-period OCI		4.4	0.7
Ending balance		12.1	26.7
Derivatives [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance		13.5	5.1
OCI before reclassifications		(11.4)	18.7
Amounts reclassified from AOCI	[3]	(4.2)	(3.8)
Net current-period OCI		(15.6)	14.9
Ending balance		(2.1)	20.0
Increase (Decrease) in Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance		0.0	0.0
OCI before reclassifications		0.0	0.0
Amounts reclassified from AOCI		0.0	0.0
Net current-period OCI		0.0	0.0
Ending balance		0.0	0.0
Accumulated Deferred Tax Asset Valuation Allowance [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance		67.5	15.8
OCI before reclassifications		0.0	0.0
Amounts reclassified from AOCI	[4]	(1.2)	9.3
Net current-period OCI		(1.2)	9.3
Ending balance		66.3	25.1
Increase (Decrease) in Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance		0.0	0.0
OCI before reclassifications		0.0	0.0
Amounts reclassified from AOCI		0.0	0.0
Net current-period OCI		0.0	0.0
Ending balance		$ 0.0	$ 0.0

[1] Amounts were included in net periodic benefit cost for pension and other postretirement benefit plans (see Note 11).

[2] No amounts were reclassified to earnings.

[3] Amounts related to derivatives are included in sales, cost of goods sold or interest expense in the period or periods the hedged item affects earnings (see Note 8).

[4] Represents the net change in deferred tax asset valuation allowances on changes in AOCI balances between the balance sheet dates.