Stock-Based Compensation (Narrative) (Details) (USD $)
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12 Months Ended | 12 Months Ended | 12 Months Ended | 12 Months Ended | 12 Months Ended | 12 Months Ended | 12 Months Ended | 12 Months Ended | |||||||||||||||||||||||||||||||||||
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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Feb. 28, 2008
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Dec. 31, 2013
Stock Option
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Dec. 31, 2012
Stock Option
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Dec. 31, 2011
Stock Option
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Dec. 31, 2013
Stock Option
Maximum
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Dec. 31, 2013
Stock Appreciation Rights (SARs)
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Dec. 31, 2013
Restricted Stock Units RSU and Performance Stock Units PSU
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Dec. 31, 2012
Restricted Stock Units RSU and Performance Stock Units PSU
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Dec. 31, 2011
Restricted Stock Units RSU and Performance Stock Units PSU
|
Dec. 31, 2013
Restricted Stock Units RSU and Performance Stock Units PSU
Minimum
|
Dec. 31, 2013
Restricted Stock Units RSU and Performance Stock Units PSU
Maximum
|
Dec. 31, 2013
Performance Stock Units Subject To Performance Condition, Condition Two
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Dec. 31, 2013
Performance Stock Units Subject To Performance Condition, Condition Three
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Dec. 31, 2013
Prior Plans
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Dec. 31, 2013
Omnibus Plan
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Dec. 31, 2013
Omnibus Plan
Common Stock
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Dec. 31, 2013
Omnibus Plan
Treasury Stock
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Dec. 31, 2013
Omnibus Plan
Restricted Stock Units
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Dec. 31, 2012
Omnibus Plan
Restricted Stock Units
|
Dec. 31, 2013
Omnibus Plan
Restricted Stock Units
Three Year Vesting
|
Dec. 31, 2013
Omnibus Plan
Performance Stock Units
|
Feb. 28, 2013
Omnibus Plan
Performance Stock Units
|
Dec. 31, 2012
Omnibus Plan
Performance Stock Units
|
Dec. 31, 2013
Omnibus Plan
Performance Stock Units Subject To Performance Condition, Condition One
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Dec. 31, 2013
Omnibus Plan
Performance Stock Units Subject To Performance Condition, Condition One
Minimum
|
Dec. 31, 2013
Omnibus Plan
Performance Stock Units Subject To Performance Condition, Condition One
Maximum
|
Dec. 31, 2013
Omnibus Plan
Performance Stock Units Subject To Performance Condition, Condition Two
|
Dec. 31, 2013
Omnibus Plan
Performance Stock Units Subject To Performance Condition, Condition Two
Minimum
|
Dec. 31, 2013
Omnibus Plan
Performance Stock Units Subject To Performance Condition, Condition Two
Maximum
|
Dec. 31, 2013
Omnibus Plan
Performance Stock Units Subject To Performance Condition, Condition Three
|
Dec. 31, 2013
Omnibus Plan
Performance Stock Units Subject To Performance Condition, Condition Three
Minimum
|
Dec. 31, 2013
Omnibus Plan
Performance Stock Units Subject To Performance Condition, Condition Three
Maximum
|
Dec. 31, 2013
Restricted Stock Units RSU and Performance Stock Units PSU
|
Dec. 31, 2012
Restricted Stock Units RSU and Performance Stock Units PSU
|
Dec. 31, 2011
Restricted Stock Units RSU and Performance Stock Units PSU
|
Dec. 31, 2013
Employee Stock
employee
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Dec. 31, 2012
Employee Stock
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Dec. 31, 2011
Employee Stock
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Dec. 31, 2013
Employee Stock
Minimum
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Dec. 31, 2013
Employee Stock
Maximum
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Stock-Based Compensation | |||||||||||||||||||||||||||||||||||||||||||
Number of shares authorized, reserved for issuance | 32,700,000 | 8,000,000 | |||||||||||||||||||||||||||||||||||||||||
Shares of common stock underlying awards outstanding | 14,200,000 | 6,000,000 | 8,200,000 | ||||||||||||||||||||||||||||||||||||||||
Number of shares available for grant | 19,900,000 | 16,000,000 | 3,900,000 | ||||||||||||||||||||||||||||||||||||||||
Granted (Shares) | 300,000 | 200,000 | 1,700,000 | 1,100,000 | 500,000 | 100,000 | |||||||||||||||||||||||||||||||||||||
Granted (In dollars per share) | $ 23.95 | $ 13.78 | $ 14.78 | $ 23.95 | $ 19.95 | ||||||||||||||||||||||||||||||||||||||
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Percent of Original Award | 0.00% | 150.00% | 0.00% | 100.00% | 0.00% | 100.00% | |||||||||||||||||||||||||||||||||||||
Weighted Average Outstanding | $ 17.00 | $ 12.62 | $ 15.68 | $ 19.95 | $ 12.18 | ||||||||||||||||||||||||||||||||||||||
Award vesting period | 2 years | 3 years | 3 years | 3 years | |||||||||||||||||||||||||||||||||||||||
Unrecognized compensation cost related to non-vested stock options, RSUs and PSUs granted | $ 29,900,000 | ||||||||||||||||||||||||||||||||||||||||||
Period for recognition of total unrecognized compensation cost | 1 year 4 months 26 days | ||||||||||||||||||||||||||||||||||||||||||
Award exercise price not less than fair market value of shares of common stock | 1 | ||||||||||||||||||||||||||||||||||||||||||
Expected term (years) | 3 years | 6 years 3 months | 10 years | ||||||||||||||||||||||||||||||||||||||||
Expected volatility rate top percentage of index universe in US Large Capitalization | 70.00% | ||||||||||||||||||||||||||||||||||||||||||
Period for expected volatility rate daily historical closing values of index used | 6 years 3 months | ||||||||||||||||||||||||||||||||||||||||||
Expected dividend yield | 0.00% | 0.00% | |||||||||||||||||||||||||||||||||||||||||
Number of common stock shares for each unit granted | 1 | ||||||||||||||||||||||||||||||||||||||||||
Award vesting percentage in first year | 25.00% | 33.33% | 33.33% | 33.33% | |||||||||||||||||||||||||||||||||||||||
Award vesting in second year | 25.00% | ||||||||||||||||||||||||||||||||||||||||||
Award vesting in third year | 50.00% | ||||||||||||||||||||||||||||||||||||||||||
Shares per employee, aggregate fair market value | 25,000 | ||||||||||||||||||||||||||||||||||||||||||
Purchase price of common stock percent | 85.00% | ||||||||||||||||||||||||||||||||||||||||||
Compensation expense | $ 36,100,000 | $ 30,300,000 | $ 31,000,000 | $ 900,000 | $ 800,000 | $ 700,000 | |||||||||||||||||||||||||||||||||||||
Number of employees who participate in the plan | 2,100 |