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Share-Based Compensation (Details 2) (USD $)	1 Months Ended		3 Months Ended		12 Months Ended
	Nov. 30, 2010	Nov. 30, 2009	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2011 plan	Dec. 31, 2010	Dec. 31, 2009
Share-based Compensation
Personnel accruals					$ 20,849,000	$ 29,151,000
Phantom Unit Appreciation Plan
Share-based Compensation
Number of Phantom Unit Appreciation Plans					2
Payments to phantom unit holders	3,600,000	900,000	9,200,000	20,100,000
Personnel accruals					0	18,700,000
Compensation expense					$ 10,600,000	$ 15,500,000	$ 3,700,000
Service Phantom interest
Share-based Compensation
Interest (per point)						$ 14.64	$ 11.37
Performance Phantom interest
Share-based Compensation
Interest (per point)						$ 21.25	$ 5.48

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- Definition

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- Definition

Represents the interest valued using the company's closing stock price as on the balance sheet date.

+ References

No definition available.

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- Definition

Represents the payments to phantom unit holders during the period.

+ References

No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

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-Name Accounting Standards Codification

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph g(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

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-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

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