Share Options And Awards (Share Options Outstanding And Exercisable) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Option Outstanding, Number	3,543,746
Share Option Outstanding, Weighted Average Remaining Contractual Life (years)	4 years 3 months
Share Option Outstanding, Weighted Average Exercise Price	$ 29.16
Share Option Outstanding, Aggregate Intrinsic Value	$ 0
Share Option Exercisable, Number	3,015,748
Share Option Exercisable, Weighted Average Exercise Price	$ 30.59
Share Option Exercisable, Weighted Average Remaining Contractual Life (years)	3 years 11 months
Share Option Exercisable, Aggregate Intrinsic Value	$ 0
$11.85 - $17.78 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Lower	$ 11.85
Range of Exercise Prices, Upper	$ 17.78
Share Option Outstanding, Number	743,869
Share Option Outstanding, Weighted Average Remaining Contractual Life (years)	5 years 2 months
Share Option Outstanding, Weighted Average Exercise Price	$ 11.85
Share Option Exercisable, Number	610,870
Share Option Exercisable, Weighted Average Exercise Price	$ 11.85
Share Option Exercisable, Weighted Average Remaining Contractual Life (years)	5 years 2 months
$17.79 - $26.69 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Lower	$ 17.79
Range of Exercise Prices, Upper	$ 26.69
Share Option Outstanding, Number	870,886
Share Option Outstanding, Weighted Average Remaining Contractual Life (years)	6 years 9 months
Share Option Outstanding, Weighted Average Exercise Price	$ 23.78
Share Option Exercisable, Number	475,887
Share Option Exercisable, Weighted Average Exercise Price	$ 23.56
Share Option Exercisable, Weighted Average Remaining Contractual Life (years)	6 years 8 months
$26.70 - $40.05 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Lower	$ 26.70
Range of Exercise Prices, Upper	$ 40.05
Share Option Outstanding, Number	1,465,277
Share Option Outstanding, Weighted Average Remaining Contractual Life (years)	2 years 10 months
Share Option Outstanding, Weighted Average Exercise Price	$ 35.36
Share Option Exercisable, Number	1,465,277
Share Option Exercisable, Weighted Average Exercise Price	$ 35.35
Share Option Exercisable, Weighted Average Remaining Contractual Life (years)	2 years 10 months
$40.06 - $49.62 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Lower	$ 40.06
Range of Exercise Prices, Upper	$ 49.62
Share Option Outstanding, Number	463,714
Share Option Outstanding, Weighted Average Remaining Contractual Life (years)	2 years 11 months
Share Option Outstanding, Weighted Average Exercise Price	$ 47.46
Share Option Exercisable, Number	463,714
Share Option Exercisable, Weighted Average Exercise Price	$ 47.46
Share Option Exercisable, Weighted Average Remaining Contractual Life (years)	2 years 11 months

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.

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=d3e5070-113901

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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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- Definition

Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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-Subparagraph (c)(1)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Section 50

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- 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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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- Definition

The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ 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)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ 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)(i)-(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Paragraph 2

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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