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Employee Incentive, Deferred Compensation, And Retirement Plans (Details) (USD $)
Share data in Millions, unless otherwise specified
12 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Incentive Stock Award Plans [Member]
Dec. 31, 2012
Incentive Stock Award Plans [Member]
Dec. 31, 2011
Incentive Stock Award Plans [Member]
Dec. 31, 2013
Stock Units [Member]
Dec. 31, 2013
SWAP Plan [Member]
Sep. 30, 2013
SWAP Plan [Member]
Dec. 31, 2013
Mutual Funds [Member]
Dec. 31, 2012
Mutual Funds [Member]
Dec. 31, 2013
Maximum [Member]
Incentive Stock Award Plans [Member]
Jun. 30, 2013
Maximum [Member]
Stock Units [Member]
Dec. 31, 2013
Maximum [Member]
Deferred Compensation Plans [Member]
Dec. 31, 2013
Maximum [Member]
SWAP Plan [Member]
Dec. 31, 2013
Minimum [Member]
Incentive Stock Award Plans [Member]
Jun. 30, 2013
Minimum [Member]
Stock Units [Member]
Dec. 31, 2013
Minimum [Member]
Deferred Compensation Plans [Member]
Dec. 31, 2013
Minimum [Member]
SWAP Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Awards vesting period in years                       8 years 8 years 8 years 7 years 3 years 3 years 5 years 3 years
Shares authorized to grant 5.1                                    
Stock-based compensation $ 137,447,000 $ 41,000 $ 26,411,000 $ (131,800,000) $ 51,400,000 $ 29,500,000                          
Tax benefit related to stock-based compensation recognized in shareholders' equity       12,000,000 16,700,000 24,900,000                          
Fair value of awards issued as retention 30,600,000                                    
Unrecognized compensation expense related to non-vested options             253,400,000                        
Weighted-average period, compensation cost expected to recognized, in years             2 years 10 months 24 days                        
Total number of stock units outstanding             17.7 16.7                      
Unvested stock units outstanding             8.8                        
Percentage of incentive compensation deferred into company stock units                 15.00%                    
Percentage of earnings deferred into company stock units               4.00%                      
Percentage of earnings deferred into company stock units, Company match               25.00% 25.00% 25.00%                  
Percentage of earnings deferred into mutual funds                   2.00%                  
Elective deferrals vested percentage               100.00%                      
Percentage of deferred earnings             1.00%                        
Investments 217,228,000 236,434,000               17,000,000 18,000,000                
Deferred compensation liability $ 14,300,000 $ 16,600,000