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Stock-Based Compensation (Narrative) (Details) (USD $)
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0 Months Ended | |
|---|---|---|
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Mar. 13, 2012
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Apr. 28, 2012
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| Stock-Based Compensation | ||
| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 6,000,000 | |
| Granted, Shares | 1,900,000 | |
| Granted, Weighted-Average Exercise Price Per Share | $ 37.63 | |
| Grants of stock options - fair value per option | $ 11.68 | |
| Granted, Stock Awards | 646,000 | |
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value | $ 37.63 |