CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY Statement - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Common Stock Common Class A	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Treasury Stock [Member]
Balance	$ 1,307.9	$ 0.4	$ 0.0	$ 606.8	$ (94.2)	$ 1,091.2	$ (296.3)
Balance (in shares)		33.4	1.7
Net Income (loss)	(63.7)
Foreign currency translation adjustment	3.7				3.7
Pension and post-retirement adjustments (net of tax of $0.0)	(0.5)				(0.5)
Stock-based compensation	1.5			1.5
Proceeds pursuant to stock-based compensation plans (in shares)		0.0
Proceeds pursuant to stock-based compensation plans	2.8			2.8
Purchases of treasury stock at cost (in shares)		0.1
Purchases of treasury stock at cost	4.7						4.7
Treasury stock issued pursuant to equity-based plans (in shares)		0.1
Treasury stock issued pursuant to equity-based plans	0.3			(2.6)			2.9
Dividends ($0.15 per share)	5.3					5.3
Net Income (loss)	(55.8)
Foreign currency translation adjustment	6.0
Balance	1,243.0	$ 0.4	$ 0.0	608.5	(90.0)	1,022.2	(298.1)
Balance (in shares)		33.4	1.7
Net Income (loss)	57.1
Foreign currency translation adjustment	0.1				0.1
Pension and post-retirement adjustments (net of tax of $0.0)	(9.0)				(9.0)
Stock-based compensation	6.0			6.0
Proceeds pursuant to stock-based compensation plans (in shares)		0.0
Proceeds pursuant to stock-based compensation plans	1.1			1.1
Purchases of treasury stock at cost (in shares)		0.3
Purchases of treasury stock at cost	8.6						8.6
Treasury stock issued pursuant to equity-based plans (in shares)		0.1
Treasury stock issued pursuant to equity-based plans	0.2			(3.3)			3.5
Dividends ($0.15 per share)	5.2					5.2
Balance	1,302.7	$ 0.4	$ 0.0	612.3	(80.9)	1,074.1	(303.2)
Balance (in shares)		33.2	1.7
Net Income (loss)	(49.2)
Foreign currency translation adjustment	2.2				2.2
Pension and post-retirement adjustments (net of tax of $0.0)	(22.2)				(22.2)
Stock-based compensation	1.6			1.6
Proceeds pursuant to stock-based compensation plans (in shares)		0.0
Proceeds pursuant to stock-based compensation plans	5.0			5.0
Purchases of treasury stock at cost (in shares)		0.3
Purchases of treasury stock at cost	11.9						11.9
Treasury stock issued pursuant to equity-based plans (in shares)		0.2
Treasury stock issued pursuant to equity-based plans	0.3			(4.3)			4.6
Dividends ($0.15 per share)	5.3					5.3
Balance	1,267.6	$ 0.4	$ 0.0	614.6	(56.5)	1,019.6	(310.5)
Balance (in shares)		33.1	1.7
Balance	1,320.8	$ 0.4	$ 0.0	614.4	(55.7)	1,065.2	(303.5)
Balance (in shares)		33.3	1.7
Adoption of ASC 606 (net of tax $16.0) | ASU 2014-09	(46.5)					(46.5)
Net Income (loss)	(61.3)					(61.3)
Foreign currency translation adjustment	(3.1)				(3.1)
Pension and post-retirement adjustments (net of tax of $0.0)	(0.2)				(0.2)
Stock-based compensation	1.5			1.5
Proceeds pursuant to stock-based compensation plans (in shares)		0.0
Proceeds pursuant to stock-based compensation plans	2.8			2.8
Purchases of treasury stock at cost (in shares)		0.0
Purchases of treasury stock at cost	0.0						0.0
Treasury stock issued pursuant to equity-based plans (in shares)		0.1
Treasury stock issued pursuant to equity-based plans	0.3			(3.2)			3.5
Dividends ($0.15 per share)	5.3					5.3
Net Income (loss)	(2.3)
Foreign currency translation adjustment	(2.0)
Purchases of treasury stock at cost	0.0
Balance	1,209.4	$ 0.4	$ 0.0	615.5	(58.6)	952.1	(300.0)
Balance (in shares)		33.4	1.7
Net Income (loss)	71.6
Foreign currency translation adjustment	(0.6)				(0.6)
Pension and post-retirement adjustments (net of tax of $0.0)	(2.7)				(2.7)
Stock-based compensation	3.7			3.7
Proceeds pursuant to stock-based compensation plans (in shares)		0.0
Proceeds pursuant to stock-based compensation plans	2.5			2.5
Purchases of treasury stock at cost (in shares)		0.0
Purchases of treasury stock at cost	0.0						0.0
Treasury stock issued pursuant to equity-based plans (in shares)		0.2
Treasury stock issued pursuant to equity-based plans	0.6			(3.8)			4.4
Dividends ($0.15 per share)	5.3					5.3
Balance	1,284.6	$ 0.4	$ 0.0	617.9	(56.5)	1,018.4	(295.6)
Balance (in shares)		33.6	1.7
Net Income (loss)	(12.6)
Foreign currency translation adjustment	1.7				1.7
Pension and post-retirement adjustments (net of tax of $0.0)	(0.2)				(0.2)
Stock-based compensation	1.6			1.6
Proceeds pursuant to stock-based compensation plans (in shares)		0.0
Proceeds pursuant to stock-based compensation plans	0.5			0.5
Purchases of treasury stock at cost (in shares)		0.1
Purchases of treasury stock at cost	2.0						2.0
Treasury stock issued pursuant to equity-based plans (in shares)		0.1
Treasury stock issued pursuant to equity-based plans	0.4			(0.6)			1.0
Dividends ($0.15 per share)	5.3					5.3
Balance	$ 1,269.1	$ 0.4	$ 0.0	$ 619.4	$ (54.6)	$ 1,000.5	$ (296.6)
Balance (in shares)		33.6	1.7