Annual report pursuant to Section 13 and 15(d)

Stock Plans and Management Compensation (Details 1)

v2.4.0.6
Stock Plans and Management Compensation (Details 1) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
SARs/Stock Options Outstanding [Roll Forward]      
Outstanding on December 31 8,200,000 9,300,000  
Exercisable on December 31 5,500,000 5,100,000  
Stock Appreciation Rights (SARs) [Member]
     
Aggregate Intrinsic Value [Abstract]      
Share-based Compensation Arrangement by Share-based Payment Award, SARs, Grants in Period, Weighted Average Grant Date Fair Value $ 12.70 $ 10.59 $ 5.68
Stock Options and SAR's [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Authorized number of shares (in shares) 13,100,000    
Number of shares available for grant (in shares) 2,300,000    
Period for stock options and SARs to be exercisable (in years) 10 years    
Awards vesting period (in years) 4 years    
SARs/Stock Options Outstanding [Roll Forward]      
Outstanding on January 1 9,347,000 9,168,000 8,332,000
Granted 400,000 1,105,000 1,987,000
Exercised (1,120,000) (556,000) (261,000)
Forfeited (461,000) (370,000) (890,000)
Outstanding on December 31 8,166,000 9,347,000 9,168,000
Exercisable on December 31 5,489,000 5,103,000 3,809,000
Weighted Average Exercise Price [Abstract]      
Outstanding on January 1 $ 16.66 $ 16.53 $ 18.27
Granted $ 23.80 $ 20.45 $ 11.18
Exercised $ 11.05 $ 15.22 $ 13.36
Forfeited $ 25.69 $ 26.66 $ 27.17
Outstanding on December 31 $ 17.33 $ 16.66 $ 16.53
Exercisable on December 31 $ 18.89 $ 20.32 $ 25.73
Weighted Average Remaining Contractual Term [Abstract]      
Outstanding on December 31 5 years 9 months 18 days    
Exercisable on December 31 5 years 1 month 6 days    
Aggregate Intrinsic Value [Abstract]      
Exercised $ 14,365,000    
Outstanding on December 31 110,457,000    
Exercisable on December 31 70,434,000    
Risk-free interest rate 1.10% 2.50% 2.80%
Dividend yield 0.20% 0.20% 0.70%
Volatility factor (A) 58.30% [1] 53.70% [1] 53.00% [1]
Share-based compensation expense 6,900,000 11,900,000 13,000,000
Stock Options and SAR's [Member] | Minimum [Member]
     
Aggregate Intrinsic Value [Abstract]      
Weighted average expected life, minimum (in years) 5 years 2 months 12 days 5 years 2 months 12 days 5 years 9 months 18 days
Stock Options and SAR's [Member] | Maximum [Member]
     
Aggregate Intrinsic Value [Abstract]      
Weighted average expected life, minimum (in years) 6 years 8 months 12 days 6 years 8 months 12 days 6 years 7 months 6 days
Stock Options and SARs Awarded Prior to 2006 [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Age of grantee plus grantees total number of years of service 65    
SARs Granted in 2006 through April 2009 [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Age of grantee plus grantees total number of years of service 70    
Aggregate Intrinsic Value [Abstract]      
Age of grantee 62 years    
SARs modified on May 2009 [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Age of grantee plus grantees total number of years of service 70    
Aggregate Intrinsic Value [Abstract]      
Age of grantee 62 years    
Non-Vested Stock Awards [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 798,000 541,000 332,000
Age of grantee plus grantees total number of years of service 70    
Aggregate Intrinsic Value [Abstract]      
Age of grantee 62 years    
Share-based compensation expense 6,500,000 3,700,000 2,100,000
Awards vesting period, other than options, lower range 3 years    
Awards vesting period, other than options, upper range 4 years    
Weighted average price at grant date (in dollars per share) $ 23.79 $ 21.02 $ 11.44
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]      
Outstanding at January 1 541,000 332,000 909,000
Granted 306,000 237,000 275,000
Released (20,000) (16,000) (79,000)
Forfeited (29,000) (12,000) (773,000)
Outstanding at December 31 798,000 541,000 332,000
Unrecognized compensation cost $ 3,400,000    
Unrecognized compensation cost, period for recognition 10 months 24 days    
[1] The Company uses a combination of implied and historical volatility in calculating the fair value of each grant.