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Share-Based Payments (Summary Of Restricted Stock Award Activity) (Details) - Share-based compensation - restricted stock
shares in Thousands
9 Months Ended
Sep. 30, 2015
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Non-vested, beginning of year (in shares) | shares 609
Granted (in shares) | shares 325
Vested (in shares) | shares (180)
Forfeited (in shares) | shares (201)
Non-vested, end of period (in shares) | shares 553
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]  
NON-VESTED, Beginning of year, weighted average grant date fair value (in usd per share) $ 62.35
Per share weighted average grant date fair value of restricted stock granted (in usd per share) 67.04
Vested, weighted average grant date fair value (in usd per share) 59.31
Forfeited, weighted average grant date fair value (in usd per share) 65.22
NON-VESTED, end of period, weighted average grant date fair value (in usd per share) $ 65.88