| **Stock-Based Compensation And Employee Benefit Plans (Summary Of Outstanding And Exercisable Stock Options) (Details) (USD $)In Thousands, except Per Share data, unless otherwise specified** | 12 Months Ended           |         |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------|---------|
||
| **Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]**                                                                                     |                      |    |
| Options outstanding, number of shares                                                                                                                                                           | 5,311                     | 7,802   |
| Options Outstanding, Weighted-Average Remaining Contractual Term (in years)                                                                                                                     | 4 years 7 months 1 day    |    |
| Options Outstanding, Weighted-Average Exercise Prices                                                                                                                                           | $ 37.43                   | $ 34.17 |
| Options exercisable, number of shares                                                                                                                                                           | 4,191                     |    |
| Options exercisable, weighted-average exercise prices                                                                                                                                           | $ 40.70                   |    |
| $11.53 - $19.99 [Member]                                                                                                                                                                        |                      |    |
| **Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]**                                                                                     |                      |    |
| Range of Exercise Prices, Minimum                                                                                                                                                               | $ 11.53                   |    |
| Range of Exercise Prices, Maximum                                                                                                                                                               | $ 19.99                   |    |
| Options outstanding, number of shares                                                                                                                                                           | 911                       |    |
| Options Outstanding, Weighted-Average Remaining Contractual Term (in years)                                                                                                                     | 4 years 10 months 25 days |    |
| Options Outstanding, Weighted-Average Exercise Prices                                                                                                                                           | $ 17.40                   |    |
| Options Outstanding, Potential Dilution                                                                                                                                                         | 0.30%                     |    |
| Options exercisable, number of shares                                                                                                                                                           | 845                       |    |
| Options exercisable, weighted-average exercise prices                                                                                                                                           | $ 17.69                   |    |
| Options Exercisable, Potential Dilution                                                                                                                                                         | 0.30%                     |    |
| $20.00 - $29.99 [Member]                                                                                                                                                                        |                      |    |
| **Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]**                                                                                     |                      |    |
| Range of Exercise Prices, Minimum                                                                                                                                                               | $ 20                      |    |
| Options outstanding, number of shares                                                                                                                                                           | 1,752                     |    |
| Options Outstanding, Weighted-Average Remaining Contractual Term (in years)                                                                                                                     | 7 years 9 months 5 days   |    |
| Options Outstanding, Weighted-Average Exercise Prices                                                                                                                                           | $ 24.03                   |    |
| Options Outstanding, Potential Dilution                                                                                                                                                         | 0.60%                     |    |
| Options exercisable, number of shares                                                                                                                                                           | 697                       |    |
| Options exercisable, weighted-average exercise prices                                                                                                                                           | $ 21.16                   |    |
| Options Exercisable, Potential Dilution                                                                                                                                                         | 0.20%                     |    |
| $30.00 - $39.99 [Member]                                                                                                                                                                        |                      |    |
| **Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]**                                                                                     |                      |    |
| Range of Exercise Prices, Maximum                                                                                                                                                               | $ 39.99                   |    |
| Options outstanding, number of shares                                                                                                                                                           | 8                         |    |
| Options Outstanding, Weighted-Average Remaining Contractual Term (in years)                                                                                                                     | 4 years 6 months 1 day    |    |
| Options Outstanding, Weighted-Average Exercise Prices                                                                                                                                           | $ 36.00                   |    |
| Options Outstanding, Potential Dilution                                                                                                                                                         | 0.00%                     |    |
| Options exercisable, number of shares                                                                                                                                                           | 8                         |    |
| Options exercisable, weighted-average exercise prices                                                                                                                                           | $ 36.00                   |    |
| Options Exercisable, Potential Dilution                                                                                                                                                         | 0.00%                     |    |
| $40.00 - $59.99 [Member]                                                                                                                                                                        |                      |    |
| **Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]**                                                                                     |                      |    |
| Range of Exercise Prices, Minimum                                                                                                                                                               | $ 40                      |    |
| Range of Exercise Prices, Maximum                                                                                                                                                               | $ 59.99                   |    |
| Options outstanding, number of shares                                                                                                                                                           | 2,271                     |    |
| Options Outstanding, Weighted-Average Remaining Contractual Term (in years)                                                                                                                     | 2 years 7 months 18 days  |    |
| Options Outstanding, Weighted-Average Exercise Prices                                                                                                                                           | $ 51.34                   |    |
| Options Outstanding, Potential Dilution                                                                                                                                                         | 0.70%                     |    |
| Options exercisable, number of shares                                                                                                                                                           | 2,272                     |    |
| Options exercisable, weighted-average exercise prices                                                                                                                                           | $ 51.34                   |    |
| Options Exercisable, Potential Dilution                                                                                                                                                         | 0.70%                     |    |
| $60.00 - $65.93 [Member]                                                                                                                                                                        |                      |    |
| **Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]**                                                                                     |                      |    |
| Range of Exercise Prices, Minimum                                                                                                                                                               | $ 60                      |    |
| Range of Exercise Prices, Maximum                                                                                                                                                               | $ 64.92                   |    |
| Options outstanding, number of shares                                                                                                                                                           | 369                       |    |
| Options Outstanding, Weighted-Average Remaining Contractual Term (in years)                                                                                                                     | 10 months                 |    |
| Options Outstanding, Weighted-Average Exercise Prices                                                                                                                                           | $ 64.85                   |    |
| Options Outstanding, Potential Dilution                                                                                                                                                         | 0.10%                     |    |
| Options exercisable, number of shares                                                                                                                                                           | 369                       |    |
| Options exercisable, weighted-average exercise prices                                                                                                                                           | $ 64.85                   |    |
| Options Exercisable, Potential Dilution                                                                                                                                                         | 0.10%                     |    |
| $11.53 - $64.92 [Member]                                                                                                                                                                        |                      |    |
| **Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]**                                                                                     |                      |    |
| Range of Exercise Prices, Minimum                                                                                                                                                               | $ 11.53                   |    |
| Range of Exercise Prices, Maximum                                                                                                                                                               | $ 64.92                   |    |
| Options outstanding, number of shares                                                                                                                                                           | 5,311                     |    |
| Options Outstanding, Weighted-Average Remaining Contractual Term (in years)                                                                                                                     | 4 years 7 months 1 day    |    |
| Options Outstanding, Weighted-Average Exercise Prices                                                                                                                                           | $ 37.43                   |    |
| Options Outstanding, Potential Dilution                                                                                                                                                         | 1.70%                     |    |
| Options exercisable, number of shares                                                                                                                                                           | 4,191                     |    |
| Options exercisable, weighted-average exercise prices                                                                                                                                           | $ 40.70                   |    |
| Options Exercisable, Potential Dilution                                                                                                                                                         | 1.30%                     |    |

| X                                                                                                                                                                                                                                                                                                                                                                                 |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Potential Dilution
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                 |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Potential Dilution
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
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.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
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.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Number of options outstanding, including both vested and non-vested options.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
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.
+ References
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| X                                                                                                                                                                                                                          |
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.
+ References
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