DERIVATIVES (INCOME STATEMENT CLASSIFICATION) (DETAILS) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Designated as Hedging Instruments [Member] | Foreign Exchange [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:	$ (476)	$ 5,331	$ (9,254)	$ 14,902
Amount and location of net gain or (loss) reclassified from accumulated OCI to income - effective portion: Revenue	917	1,367	7,227	2,016
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] | Foreign Exchange [Member] | Cash Flow [Member] | Other income (expense), net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount and location of net gain or (loss) reclassified from accumulated OCI to income - ineffective portion and amount excluded from effectiveness testing: Other income (expense), net	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:	(154)	(386)	(78)	(862)
Amount and location of net gain or (loss) reclassified from accumulated OCI to income - effective portion: Revenue	0	0	0
Amount and location of net gain or (loss) reclassified from accumulated OCI to income - effective portion: Interest expense	(264)	(381)	(778)	(564)
Designated as Hedging Instruments [Member] | Interest Rate [Member] | Cash Flow [Member] | Other income (expense), net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount and location of net gain or (loss) reclassified from accumulated OCI to income - ineffective portion and amount excluded from effectiveness testing: Other income (expense), net	0	0	0	0
Not Designated as Hedging Instruments [Member] | Foreign Exchange [Member] | Cash Flow [Member] | Cost of Services [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in other comprehensive income - effective portion, net of tax:	0	0	0	0
Not Designated as Hedging Instruments [Member] | Foreign Exchange [Member] | Cash Flow [Member] | Other income (expense), net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in other comprehensive income - effective portion, net of tax:	0	0	0	0
Not Designated as Hedging Instruments [Member] | Foreign Exchange [Member] | Fair Value [Member] | Cost of Services [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in other comprehensive income - effective portion, net of tax:	0	0	0	0
Not Designated as Hedging Instruments [Member] | Foreign Exchange [Member] | Fair Value [Member] | Other income (expense), net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in other comprehensive income - effective portion, net of tax:	(2,373)	544	(3,620)	4,399
Not Designated as Hedging Instruments [Member] | Leases Derivative Contract [Member] | Embedded Derivative [Member] | Cost of Services [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in other comprehensive income - effective portion, net of tax:	18	7	131	259
Not Designated as Hedging Instruments [Member] | Leases Derivative Contract [Member] | Embedded Derivative [Member] | Other income (expense), net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in other comprehensive income - effective portion, net of tax:	$ 0	$ 0	$ 0	$ 0