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Stock-Based Compensation and Other Incentive Plans (Narrative) (Details) (USD $)
 12 Months Ended 3 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
long term incentive plan [Member]
Dec. 31, 2012
long term incentive plan [Member]
Dec. 31, 2011
long term incentive plan [Member]
Dec. 31, 2013
Minimum [Member]
Employee Stock Option [Member]
Dec. 31, 2013
Maximum [Member]
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period       3 years        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 10,300,000              
Exercised, aggregate intrinsic value   $ 1,800,000 $ 2,600,000          
Stock options compensation expense 6,700,000 8,000,000 8,800,000          
Unrecognized compensation cost 4,900,000              
Options vested in period fair value 8,900,000 8,000,000 9,900,000          
Compensation expense       9,100,000 8,100,000 2,700,000    
Amounts unpaid under long term incentive plan 17,200,000 13,100,000            
Net cash surrender values 39,400,000 35,400,000            
Participants 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%              
Deferred compensation plan liability 37,000,000 31,300,000            
Net income (expense) related to deferred compensation plan 2,600,000 3,300,000 6,200,000          
Granted, Common Shares 1,998,000              
Weighted average exercise price of options granted $ 5.23              
Weighted average grant-date fair value per share of options granted $ 2.37 $ 5.27 $ 14.18          
Option, weighted average risk free rate 0.65% 0.75706% 1.92%          
Option, weighted average dividend yield 2.30% 2.91789% 1.25%          
Option, weighted average volatility 66.70% 60.71644% 57.40%          
Expected life of options (Years) 4 years 6 months 4 years 6 months 4 years 6 months          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period             3 years 4 years
Shares authorized for incentive plan 30,900,000              
Long term incentive plan amounts accrued $ 67,621,000 $ 72,405,000