Consolidated Statement Of Stockholders' Equity (Deficiency) And Comprehensive Income (Loss) (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Currency translation adjustment, tax	$ 1.8
Amortization of pension related costs, tax	2.0
Pension re-measurement, tax	30.1
Treasury stock authorized to satisfy minimum statutory tax withholding requirements	138,433	147,161	129,224
Weighted average price per share	$ 10.07	$ 16.84	$ 8.56
Class A Common Stock [Member]
Total value	$ 1.4	$ 2.5	$ 1.1

Tax effects of the increase (decrease) to accumulated comprehensive income during the period related to benefit plans. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.

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Tax effect of the adjustment that results from the process of translating subsidiary financial statements and foreign equity investments into functional currency of the reporting entity. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.

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- Definition

For each annual statement of income presented, the tax effect of the net gain (loss) recognized in other comprehensive income that is a reclassification adjustment of other comprehensive income as a result of being recognized as a component of net periodic benefit cost for the period.

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