Stock-Based Compensation And Other Incentive Plans (Narrative) (Details) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options compensation expense	$ 8,000,000	$ 8,800,000	$ 10,600,000
Exercised, aggregate intrinsic value	1,800,000	2,600,000	3,000,000
Granted, Common Shares	1,311
Weighted average exercise price of options granted	$ 13.28
Weighted average grant-date fair value per share of options granted	$ 5.27	$ 14.18	$ 9.43
Option, weighted average risk free rate	0.76%	1.92%	2.16%
Option, weighted average dividend yield	2.92%	1.25%	1.99%
Option, weighted average volatility	60.72%	57.40%	57.10%
Expected life of options (Years)	4 years 6 months	4 years 6 months	4 years 6 months
Shares authorized for incentive plan	18,000
Unrecognized compensation cost	7,000,000
Options vested in period fair value	8,000,000	9,900,000	10,600,000
Long term incentive plan amounts accrued	72,405,000	65,323,000
Participans maximum deferred amount in base salaries percentage	85.00%
Participants maximum deferred amount in annual incentive awards percentage	100.00%
Participants maximum deferred stock awards percentage	100.00%
Net cash surrender values	35,400,000	35,800,000
Deferred compensation plan liability	31,300,000	32,700,000
Net income (expense) related to deferred compensation plan	3,300,000	6,200,000	(2,800,000)
long term incentive plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	8,100,000	2,700,000	3,800,000
Long term incentive plan amounts accrued	13,100,000	9,600,000
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of restricted stock granted	$ 13.31
Grant date fair value	1,400,000	1,400,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of restricted stock granted	$ 13.44	$ 30.42	$ 22.03
Grant date fair value	200,000	1,100,000	400,000
Restricted Stock And Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	6,900,000
Restricted compensation expense	$ 3,500,000	$ 2,100,000	$ 1,100,000
Restricted Stock And Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based awards vesting period	3 years
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based awards vesting period	3 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based awards vesting period	4 years

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Participants maximum differed amount in annual incentive awards percentage

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Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

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Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

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Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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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 noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation.

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Expenditures for salaries for officers and non-officers. Does not include allocated share-based compensation, pension and post-retirement benefit expense or other labor-related non-salary expense. For commercial and industrial companies, excludes any direct and overhead labor that is included in cost of goods sold.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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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 estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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

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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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Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded.

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The noncash expense that accounts for the value of stock or unit options distributed to employees as compensation.

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