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Quarterly report pursuant to Section 13 or 15(d)

Stock Compensation Plans (Estimated Fair Value For Performance Share Grants) (Details)

v2.3.0.15
Stock Compensation Plans (Estimated Fair Value For Performance Share Grants) (Details) (USD $)
0 Months Ended
Mar. 08, 2011
Stock Compensation Plans [Abstract] Ìý
Grant Date Market Price $ 96.70
Average Expected Term (Years) 2.81
Expected Volatility 94.40%
Risk-Free Interest Rate 1.17%
Dividend Yield 0.58%
Fair Value $ 77.90
Fair Value (Percent of Grant Date Market Price) 80.60%