Earnout Contingency Expiration

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- Definition

Lease expiration period

+ References

No definition available.

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- Definition

Performance Based Commitments Maximum Consideration

+ References

No definition available.

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- Definition

Performance Based Commitments Maximum Consideration Exchange Rate Adjusted

+ References

No definition available.

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- Definition

Real Estate Price Per Square Acre

+ References

No definition available.

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- Definition

Revenue Sharing Agreement Amount

+ References

No definition available.

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- Definition

Space held for redevelopment.

+ References

No definition available.

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- Definition

The amount of liability arising from an inherited contingency (as defined) which has been recognized as of the acquisition date.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 12, 13, 14, 20, A107

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 55

-Paragraph 37

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph i

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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- Definition

Amount of payments made under the terms of an indemnification agreement contained in a lease.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 10

-Section 25

-Paragraph 53

-URI http://asc.fasb.org/extlink&oid=6452223&loc=d3e35680-112684

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-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 86-33

-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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- Definition

Costs incurred and are directly related to generating revenues from leased and rented property or equipment.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.2(c))

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

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- Definition

Date which lease or group of leases is set to expire, in CCYY-MM-DD format.

+ References

No definition available.

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- Definition

Carrying amount as of the balance sheet date of investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.1(f))

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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- Definition

The floor amount as of the balance sheet date that the entity must expend to satisfy the terms of disclosed arrangements (excluding long-term commitments) in which the entity has agreed to expend funds to procure goods or services from one or more suppliers, other than under a long-term purchase commitment or an unconditional purchase obligation.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 17

-Article 9

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

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-Subparagraph (SX 210.9-03.17)

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-Topic 210

-SubTopic 10

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-Subparagraph (SX 210.5-02.25)

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-Name Accounting Standards Codification

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-SubTopic 210

-Section S99

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 25

-Article 5

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 19

-Article 7

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Commitments And Contingencies (Details)	3 Months Ended					3 Months Ended
Commitments And Contingencies (Details)	Mar. 31, 2012 USD ($)	Mar. 31, 2011 USD ($)	Mar. 31, 2012 350 East Cermak Road [Member] USD ($)	Mar. 31, 2011 350 East Cermak Road [Member] USD ($)	Dec. 31, 2011 350 East Cermak Road [Member] USD ($)	Mar. 31, 2012 29 A International Business Park [Member] USD ($)	Mar. 31, 2012 29 A International Business Park [Member] SGD
Lease expiration, date			May 01, 2012
Rental expense, leases	$ 79,845,000	$ 71,723,000
Rental revenue sharing agreement, maximum per month			135,000
Space held for redevelopment (in square feet)			192,000
Payments made as part of revenue sharing agreement			400,000	400,000
Contingent liability			300,000		700,000
Additional performance based consideration earned (maximum)							50,000,000
Additional performance based consideration earned (maximum), adjusted for exchange rate						39,800,000
Expiration of earnout contingency						November 2020	November 2020
Lease expiration period	April 2017
Sale price of building	24,000,000
Real estate price, per square acre	225,000
Commitments related to construction contracts	$ 213,100,000