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DERIVATIVES (INCOME STATEMENT CLASSIFICATION) (DETAILS) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Designated as Hedging Instruments [Member] | Option and Forward Contracts [Member] | Cash Flow [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in other comprehensive income - effective portion, net of tax:	$ 2,337	$ (2,673)	$ 9,571	$ (2,104)
Amount and location of net gain or (loss) reclassified from accumulated OCI to income - effective portion: Revenue	692	3,224	649	6,915
Amount and location of net gain or (loss) reclassified from accumulated OCI to income - effective portion: Interest expense	0	0	0	0
Designated as Hedging Instruments [Member] | Interest Rate [Member] | Cash Flow [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in other comprehensive income - effective portion, net of tax:	(313)	(516)	(476)	(327)
Amount and location of net gain or (loss) reclassified from accumulated OCI to income - effective portion: Revenue	0	0	0	0
Amount and location of net gain or (loss) reclassified from accumulated OCI to income - effective portion: Interest expense	(183)	0	(183)	0
Not Designated as Hedging Instruments [Member] | Option and Forward Contracts [Member] | Cash Flow [Member] | Cost of Services [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount and location of net gain or (loss) recognized in the Consolidated Statement of Comprehensive Income	0	0	0	0
Not Designated as Hedging Instruments [Member] | Option and Forward Contracts [Member] | Cash Flow [Member] | Other income (expense), net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount and location of net gain or (loss) recognized in the Consolidated Statement of Comprehensive Income	0	0	0	0
Not Designated as Hedging Instruments [Member] | Option and Forward Contracts [Member] | Fair Value [Member] | Cost of Services [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount and location of net gain or (loss) recognized in the Consolidated Statement of Comprehensive Income	0	0	0	0
Not Designated as Hedging Instruments [Member] | Option and Forward Contracts [Member] | Fair Value [Member] | Other income (expense), net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount and location of net gain or (loss) recognized in the Consolidated Statement of Comprehensive Income	1,686	(207)	3,855	503
Not Designated as Hedging Instruments [Member] | Leases | Embedded Derivative [Member] | Cost of Services [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount and location of net gain or (loss) recognized in the Consolidated Statement of Comprehensive Income	(266)	78	(266)	122
Not Designated as Hedging Instruments [Member] | Leases | Embedded Derivative [Member] | Other income (expense), net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount and location of net gain or (loss) recognized in the Consolidated Statement of Comprehensive Income	$ 0	$ 0	$ 0	$ 0

X

- Definition

The amount of net gains or losses on a cash flow hedge reclassified in the period to interest expense from accumulated other comprehensive income.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 45

-Subparagraph b(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.



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

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-Publisher FASB

-Name Accounting Standards Codification

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- Definition

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+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 45

-Subparagraph b(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.



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

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-Section 50

-Paragraph 4C

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-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624171-113959



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- Definition

The amount of net gains and losses recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 205G

-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.



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4A

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 44C

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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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- Definition

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624171-113959



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 205G

-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 Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 44C

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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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