DERIVATIVES (INCOME STATEMENT CLASSIFICATION) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Sales Revenue Services Net	$ 602,956	$ 592,453	$ 1,836,636	$ 1,785,429
Other nonoperating income expense	687	3,946	(2,232)	11,317
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 (loss) - effective portion, net of tax:	989	(1,276)	2,012	(1,184)
Designated as Hedging Instruments [Member] | Foreign Exchange [Member] | Cash Flow [Member] | Reclassification from accumulated other comprehensive income | Revenue
Derivative Instruments, Gain (Loss) [Line Items]
Sales Revenue Services Net	1,336	(1,724)	2,719	(1,598)
Not Designated as Hedging Instruments [Member] | Foreign Exchange [Member] | Fair Value [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other nonoperating income expense	$ (369)	$ 15	$ 1,017	$ 273