Stock-Based Compensation Plans (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended	12 Months Ended
Dec. 31, 2011	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares Authorized	19,000,000	19,000,000
Number of Shares Available for Grant	7,000,000	7,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Granted			$ 1.16	$ 1.45
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Compensation expense for the year		$ 4.1	$ 3.3	$ 8.5
Intrinsic Value of awards outstanding	4.4	4.4
Intrinsic Value of awards exercisable	4.3	4.3
Unrecognized Compensation	0.3	0.3
Phantom Shares Annual Grant	6,000
unrestricted stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Stock Issued During Period Shares			300,000
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures			0.8
Stock Options and Stock Appreciation Rights [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at January 1,		17,816,000	20,172,000	22,770,000
Outstanding at January 1,		$ 5.55	$ 7.15	$ 9.34
Granted		0	1,374,000	1,918,000
Granted		$ 0.00	$ 2.99	$ 1.47
Exercised		(292,000)	(419,000)	(4,000)
Exercised	$ 1.74	$ 1.74	$ 1.58	$ 1.75
Forfeited		(261,000)	(464,000)	(248,000)
Forfeited		$ 3.22	$ 2.05	$ 1.87
Expired		(3,111,000)	(2,847,000)	(4,264,000)
Expired		$ 14.48	$ 16.83	$ 16.57
Outstanding at December 31,	14,152,000	14,152,000	17,816,000	20,172,000
Outstanding at December 31,	$ 3.70	$ 3.70	$ 5.55	$ 7.15
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Expected to vest at December 31,	14,152,000	14,152,000	17,766,000	20,079,000
Expected to vest at December 31,	$ 3.70	$ 3.70	$ 5.56	$ 7.18
Exercisable at December 31,	13,047,000	13,047,000	14,348,000	15,250,000
Exercisable at December 31,	$ 3.73	$ 3.73	$ 6.26	$ 8.76
Compensation expense for the year		0.9	1.5	3.7
Tax benefit related to compensation expense		(0.3)	(0.6)	(1.4)
Intrinsic value of awards exercised		0.4	0.4	0
Cash received from awards exercised		0.4	0.5	0
Grant date fair value of awards vested		2.1	2.6	1.6
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Granted		$ 1.18	$ 1.13
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition		2
Intrinsic Value of awards outstanding	0.5	0.5
Intrinsic Value of awards exercisable	0.1	0.1
Unrecognized Compensation	0.5	0.5
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition		2
Compensation expense for the year		0.8	0.5	0.9
Tax benefit related to compensation expense		(0.3)	(0.2)	(0.3)
Grant date fair value of awards vested		0.2	0.3	0.8
Unrecognized Compensation	1.5	1.5
Deferred Compensation, Share-based Payments [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Deferred Compensation,Total Shares Deferred		700,000	700,000
Deferred Compensation, Compensation Expense		$ 0.3	$ 0.2	$ 1.4
Stock Options SARs and Restricted Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition		1
Performance Based Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition		1

Phantom Shares Annual Grant

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Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures in Period Weighted Average Excercise Price

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Share Based Compensation Arrangement By Share Based Payment Awards Options Forfeitures in Period Weighted Average Excercise Price

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- Definition

The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

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The number of shares issued pursuant to the terms of the deferred compensation plan as of the balance sheet date.

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As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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The total fair value of equity-based awards for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of vested portions of options outstanding and currently exercisable under the option plan as of the balance sheet date.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

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The weighted average price at which option holders acquired shares when converting their stock options into shares under the plan during the reporting period.

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- Definition

The decrease in the number of shares that could be issued attributable to the lapse of rights to exercise previously issued stock options under the terms of the option agreements under the plan during the reporting period.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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- Definition

Gross number of share options (or share units) granted during the period.

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No definition available.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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