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Long-term Equity-based Compensation Plans (Tables)
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9 Months Ended |
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Sep. 30, 2012
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
The assumptions used in the Black-Scholes pricing model for options granted during the nine months ended September 30, 2012 and 2011 were as follows: | | | | | | | | | | | | | | Nine Months Ended | | Sep 30, 2012 | | Sep 30, 2011 | Range of Valuation Assumptions | | | | | | | | Expected Volatility | 29.36 | % | - | 53.84 | % | | 41.26 | % | - | 55.16 | % | Risk-free Interest Rate | 0.16 |
| - | 1.26 |
| | 1.30 |
| - | 2.87 |
| Expected Dividend Yield | 2.92 |
| - | 3.26 |
| | 3.15 |
| - | 3.38 |
| Weighted-Average Expected Life in Years | |
| | | | |
| | | Employee Grants | 1 |
| - | 7 | | 3.5 |
| - | 7 | Director Grants | 6 | | 6 |
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| Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] |
Option and stock appreciation right activity for the nine months ended September 30, 2012 is presented below: | | | | | | | | | | | | | | | Shares Subject to Options | | Weighted- Average Exercise Price Per Share ($) | | Weighted- Average Remaining Contractual Life (in Years) | | Aggregate Intrinsic Value ($ in Millions) | Outstanding at Beginning of the Year | 3,632,398 |
| | $ | 40.70 |
| | | | | Granted | 265,451 |
| | 29.81 |
| | | | | Exercised | (15,199 | ) | | 22.08 |
| | | | | Forfeited or Expired | (452,846 | ) | | 48.36 |
| | | | | Outstanding at September 30, 2012 | 3,429,804 |
| | $ | 38.93 |
| | 4.42 | | $ | 7.2 |
| Vested and Expected to Vest at September 30, 2012 | 3,394,413 |
| | $ | 39.04 |
| | 4.38 | | $ | 7.1 |
| Exercisable at September 30, 2012 | 2,944,739 |
| | $ | 40.79 |
| | 3.73 | | $ | 5.7 |
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| Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] |
Information pertaining to options and stock appreciation rights outstanding at September 30, 2012 is presented below: | | | | | | | | | | | | | | | | | | | | | | | | | | | | Outstanding | | Exercisable | Range of Exercise Prices | | Shares Subject to Options | | Weighted- Average Exercise Price Per Share ($) | | Weighted- Average Remaining Contractual Life (in Years) | | Shares Subject to Options | | Weighted- Average Exercise Price Per Share ($) | $ | 10.00 |
| - | $ | 15.00 |
| | 204,500 |
| | $ | 13.55 |
| | 6.35 | | 204,500 |
| | $ | 13.55 |
| 15.01 |
| - | 20.00 |
| | 8,000 |
| | 16.48 |
| | 6.60 | | 8,000 |
| | 16.48 |
| 20.01 |
| - | 25.00 |
| | 313,750 |
| | 23.74 |
| | 7.52 | | 176,312 |
| | 23.64 |
| 25.01 |
| - | 30.00 |
| | 636,000 |
| | 28.56 |
| | 8.29 | | 292,373 |
| | 28.03 |
| 30.01 |
| - | 35.00 |
| | 6,614 |
| | 31.92 |
| | 6.09 | | 2,614 |
| | 31.18 |
| 35.01 |
| - | 40.00 |
| | 340,577 |
| | 37.25 |
| | 5.19 | | 340,577 |
| | 37.25 |
| 40.01 |
| - | 45.00 |
| | 400,084 |
| | 43.56 |
| | 1.81 | | 400,084 |
| | 43.56 |
| 45.01 |
| - | 50.00 |
| | 1,185,747 |
| | 48.62 |
| | 2.72 | | 1,185,747 |
| | 48.62 |
| 50.01 |
| - | 55.00 |
| | 334,532 |
| | 50.85 |
| | 1.28 | | 334,532 |
| | 50.85 |
| 10.00 |
| - | 55.00 |
| | 3,429,804 |
| | 38.93 |
| | 4.42 | | 2,944,739 |
| | 40.79 |
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Performance-Based Restricted Stock [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
Activity related to nonvested performance-based restricted stock for the nine months ended September 30, 2012 was as follows: | | | | | | | | | Performance-Based Restricted Shares | | Weighted- Average Grant-Date Fair Value Per Share | Nonvested Balance at Beginning of the Year | 172,875 |
| | $ | 29.86 |
| Granted | 68,575 |
| | 36.65 |
| Vested | (51,596 | ) | | 14.04 |
| Forfeited | (2,579 | ) | | 30.68 |
| Nonvested Balance at End of Period | 187,275 |
| | $ | 36.70 |
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Time-Based Restricted Stock [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
Activity related to nonvested time-based restricted stock for the nine months ended September 30, 2012 was as follows: | | | | | | | | | Time-Based Restricted Shares | | Weighted- Average Grant-Date Fair Value Per Share | Nonvested Balance at Beginning of the Year | 116,784 |
| | $ | 23.33 |
| Granted | 72,125 |
| | 29.90 |
| Vested | (42,824 | ) | | 24.41 |
| Forfeited | (14,979 | ) | | 25.79 |
| Nonvested Balance at End of Period | 131,106 |
| | $ | 26.31 |
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