v2.4.0.6

Stock-Based Compensation (Summary Of Stock Option Activity) (Details) (Stock Options [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, Balance, December 31, 2012	2,199
Options, Granted	109
Options, Exercised	(10)
Options, Cancelled	(50)
Options, Balance, March 31, 2013	2,248
Options, Vested and expected to vest at March 31, 2013	2,158
Options, Exercisable, September 30, 2012	1,621
Weighted Average Exercise Price, Balance, December 31, 2012	$ 38.55
Weighted Average Exercise Price, Granted	$ 31.42
Weighted Average Exercise Price, Exercised	$ 22.37
Weighted Average Exercise Price, Cancelled	$ 33.12
Weighted Average Exercise Price, Balance, March 31, 2013	$ 38.39
Weighted Average Exercise Price, Vested and expected to vest	$ 38.51
Weighted Average Exercise Price, Exercisable, March 31, 2013	$ 39.07
Weighted Average Remaining Contractual Term (in years), Balance, March 31, 2013	5 years 6 months 22 days
Weighted Average Remaining Contractual Term (in years), Vested and expected to vest, March 31, 2013	5 years 5 months 5 days
Weighted Average Remaining Contractual Term (in years), Exercisable, March 31, 2013	4 years 4 months 17 days
Aggregate Intrinsic Value, Balance, March 31, 2013	$ 6,297
Aggregate Intrinsic Value, Vested and expected to vest, March 31, 2013	6,138
Aggregate Intrinsic Value, Exercisable, March 31, 2013	$ 5,288

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Net number of share options (or share units) granted during the period.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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