Consolidated Statements of Equity (USD $) In Millions, unless otherwise specified	Total	Parent [Member]	Common Stock [Member] Common Class A [Member]	Common Stock [Member] Common Class B [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]
Balance at Dec. 31, 2008			$ 6.7		$ 14.4	$ 399.3	$ (65.3)	$ 0.2
Net Income	31.0
Stock-based Compensation
Stock-based compensation			0		1.8
Shares issued under stock compensation plans					0.3
Treasury Stock Transactions
Purchase of treasury shares					0
Noncontrolling Interests
Noncontrolling interest share of contributions to joint venture					(0.4)			0.4
Retained Earnings
Net income attributable to stockholders	31.1					31.1
Cash dividends on Class A and Class B common stock:
Cash dividends						(17.1)
Accumulated other comprehensive income (loss)
Foreign currency translation adjustment	17.4						17.4
Sale of operations							0
Current period cash flow hedging activity	8.7						8.7
Reclassification of hedging activities into earnings	(3.9)						3.9
Current period pension and postretirement plan activity	9.9						(9.9)
Reclassification of pension and postretirement activity into earnings	4.1						4.1
Noncontrolling Interest
Net loss	(0.1)							(0.1)
Comprehensive Income Attributable to Stockholders	55.3
Balance at Dec. 31, 2009	397.1	396.6	6.7	1.6	16.1	413.3	(41.1)	0.5
Net Income	79.4
Stock-based Compensation
Stock-based compensation			0.1		6.4
Shares issued under stock compensation plans					0.5
Treasury Stock Transactions
Purchase of treasury shares					0
Noncontrolling Interests
Noncontrolling interest share of contributions to joint venture					(0.4)			0.4
Retained Earnings
Net income attributable to stockholders	79.5					79.5
Cash dividends on Class A and Class B common stock:
Cash dividends						(17.4)
Accumulated other comprehensive income (loss)
Foreign currency translation adjustment	(6.7)						0.4
Sale of operations							(7.1)
Current period cash flow hedging activity	(3.7)						(3.7)
Reclassification of hedging activities into earnings	8.8						(8.8)
Current period pension and postretirement plan activity	3.8						(3.8)
Reclassification of pension and postretirement activity into earnings	5.1						5.1
Noncontrolling Interest
Net loss	(0.1)							(0.1)
Comprehensive Income Attributable to Stockholders	61.6
Balance at Dec. 31, 2010	448.2	447.4	6.8	1.6	22.6	475.4	(59.0)	0.8
Net Income	162.1
Stock-based Compensation
Stock-based compensation			0		1.7
Shares issued under stock compensation plans					0.5
Treasury Stock Transactions
Purchase of treasury shares					(2.1)
Noncontrolling Interests
Noncontrolling interest share of contributions to joint venture					0			0
Retained Earnings
Net income attributable to stockholders	162.1					162.1
Cash dividends on Class A and Class B common stock:
Cash dividends						(17.8)
Accumulated other comprehensive income (loss)
Foreign currency translation adjustment	(14.9)						(14.9)
Sale of operations							0
Current period cash flow hedging activity	2.4						2.4
Reclassification of hedging activities into earnings	(9.2)						9.2
Current period pension and postretirement plan activity	19.0						(19.0)
Reclassification of pension and postretirement activity into earnings	6.7						6.7
Noncontrolling Interest
Net loss	0							0
Comprehensive Income Attributable to Stockholders	146.5
Balance at Dec. 31, 2011	$ 577.0	$ 576.2	$ 6.8	$ 1.6	$ 22.7	$ 619.7	$ (74.6)	$ 0.8