Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Schedule Of Activity For Restricted Stock Units) (Details)

v2.4.0.6
Stock-Based Compensation (Schedule Of Activity For Restricted Stock Units) (Details) (Restricted Stock Units [Member], USD $)
12 Months Ended
Dec. 31, 2011
Performance-Based [Member]
 
Stock-Based Compensation Arrangement By Stock-Based Payment Award [Line Items]  
Nonvested shares outstanding, December 2010 855,357
Granted, Nonvested Shares Outstanding 240,672
Issued as Common Stock, Number Outstanding (238,290)
Forfeited/cancelled, Nonvested Shares Outstanding (36,528)
Nonvested shares, December 2011 821,211
Shares earned and vested in period 480,140
Nonvested shares outstanding, December 2010, Weighted Average Grant Date Fair Value $ 68.09
Granted, Weighted Average Grant Date Fair Value $ 95.76
Issued as Common Stock, Weighted Average Grant Date Fair Value $ 77.54
Forfeited/cancelled, Weighted Average Grant Date Fair Value $ 75.87
Nonvested shares outstanding, December 2011, Weighted Average Grant Date Fair Value $ 73.11
Vested, Weighted Average Grant Date Fair Value $ 65.90
Nonperformance-Based [Member]
 
Stock-Based Compensation Arrangement By Stock-Based Payment Award [Line Items]  
Nonvested shares outstanding, December 2010 76,300
Granted, Nonvested Shares Outstanding 86,336
Issued as Common Stock, Number Outstanding (576)
Forfeited/cancelled, Nonvested Shares Outstanding (9,300)
Nonvested shares, December 2011 152,760
Shares earned and vested in period 5,760
Nonvested shares outstanding, December 2010, Weighted Average Grant Date Fair Value $ 79.49
Granted, Weighted Average Grant Date Fair Value $ 114.31
Issued as Common Stock, Weighted Average Grant Date Fair Value $ 95.56
Forfeited/cancelled, Weighted Average Grant Date Fair Value $ 71.91
Nonvested shares outstanding, December 2011, Weighted Average Grant Date Fair Value $ 99.57
Vested, Weighted Average Grant Date Fair Value $ 95.56