COMPREHENSIVE INCOME (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
COMPREHENSIVE INCOME
Net income including noncontrolling interests	$ 55,358	$ 32,628	$ 159,322	$ 90,701
Other comprehensive income:
Unrealized (loss) gain on derivatives designated and qualifying as cash flow hedges, net of tax	1,516	(1,015)	1,412	(185)
Defined benefit pension plan activity, net of tax	3,388	3,193	10,104	15,061
Currency translation adjustment	(59,045)	40,445	(23,978)	6,552
Total comprehensive income	1,217	75,251	146,860	112,129
Total comprehensive income (loss) attributable to noncontrolling interests	(684)	612	99	2,300
Total comprehensive income attributable to shareholders	1,901	74,639	146,761	109,829
Tax on unrealized (loss) gain on derivatives	447	(93)	477	285
Tax on defined benefit pension plan activity	$ 2,246	$ 1,785	$ 6,678	$ 9,230