Condensed Consolidated Statements of Equity - USD ($) $ in Millions		Total	Common Stock	Capital in Excess of Par Value	Retained Earnings (Accumulated Deficit)	AOCI Attributable to Parent	Noncontrolling Interests
Beginning Balance (in shares) at Dec. 31, 2018			299,807,779
Beginning balance at Dec. 31, 2018		$ 2,018.5	$ 3.0	$ 1,944.4	$ 10.0	$ (377.9)	$ 439.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Loss		73.5			57.9		15.6
Other Comprehensive (Loss) Income, Net of Tax:
Derivative Instruments		(0.5)				(0.4)	(0.1)
Pension and Postretirement Benefit Plans		1.4				1.2	0.2
Currency Translation Adjustment		4.8				3.9	0.9
Repurchase of Common Stock (in shares)	[1]		(5,033,426)
Repurchase of Common Stock	[1]	(59.5)	$ (0.1)	(27.2)	(32.2)
Dividends Declared		(22.1)			(22.1)
Reclassification of Redeemable Noncontrolling Interest for Share Repurchases		(6.7)					(6.7)
Distribution of Membership Interest		(5.0)					(5.0)
Recognition of Stock-Based Compensation, Net		0.9		0.9
Issuance of Shares for Stock-Based Awards (in shares)			530,196
Ending Balance (in shares) at Mar. 31, 2019			295,304,549
Ending balance at Mar. 31, 2019		$ 2,005.3	$ 2.9	1,918.1	13.6	(373.2)	443.9
Beginning Balance (in shares) at Dec. 31, 2019		290,246,907	290,246,907
Beginning balance at Dec. 31, 2019		$ 2,058.0	$ 2.9	1,876.7	56.4	(365.8)	487.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Loss		(14.5)			(12.7)		(1.8)
Other Comprehensive (Loss) Income, Net of Tax:
Derivative Instruments		(1.3)				(1.0)	(0.3)
Pension and Postretirement Benefit Plans		145.7				113.3	32.4
Currency Translation Adjustment		(56.0)				(46.0)	(10.0)
Repurchase of Common Stock (in shares)	[2]		(9,667,034)
Repurchase of Common Stock	[2]	(124.4)	$ (0.1)	(52.6)	(71.7)
Dividends Declared		(21.1)			(21.1)
Redeemable Noncontrolling Interest Redemption Value Mark-up		18.1		18.1
Tax Effect of IP Redemption		6.8		6.8
Reclassification of Redeemable Noncontrolling Interest for Share Repurchases		(250.0)
Distribution of Membership Interest		(4.6)					(4.6)
Recognition of Stock-Based Compensation, Net		3.6		3.6
Issuance of Shares for Stock-Based Awards (in shares)			788,561
Issuance of Shares for Stock-Based Awards		$ 0.0
Ending Balance (in shares) at Mar. 31, 2020		281,778,834	281,368,434
Ending balance at Mar. 31, 2020		$ 2,010.3	$ 2.8	$ 1,852.6	$ (49.1)	$ (299.5)	$ 503.5

[1] Includes 33,263 shares repurchased but not yet settled as of March 31, 2019.

[2] Includes 410,400 shares repurchased but not yet settled as of March 31, 2020.