Changes In Equity And Comprehensive Income (Summary Of Changes In Equity) (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Balance, beginning of period			$ 993,030	$ 893,702
Dividends			(26,859)	(23,565)
Reacquisition on open market			(49,999)	(9,990)
Exercise of stock options, net of shares reacquired			17,308	12,389
Stock compensation expense			7,274	6,344
Excess tax benefit from stock based compensation			5,359	969
Net income	50,537	40,163	98,915	73,347
Less: Currency translation adjustment			41,884	(57,188)
Less: Changes in pension and postretirement plan assets and benefit obligation, net of tax benefit			2,353
Comprehensive income (loss)			143,152	16,159
Balance, end of period	1,089,265	896,008	1,089,265	896,008
Noncontrolling Interests [Member]
Balance, beginning of period			8,086	7,940
Net income			11	72
Less: Currency translation adjustment			211	(277)
Comprehensive income (loss)			222	(205)
Balance, end of period	8,308	7,735	8,308	7,735
Total Shareholders' Equity [Member]
Balance, beginning of period			984,944	885,762
Dividends			(26,859)	(23,565)
Reacquisition on open market			(49,999)	(9,990)
Exercise of stock options, net of shares reacquired			17,308	12,389
Stock compensation expense			7,274	6,344
Excess tax benefit from stock based compensation			5,359	969
Net income			98,904	73,275
Less: Currency translation adjustment			41,673	(56,911)
Less: Changes in pension and postretirement plan assets and benefit obligation, net of tax benefit			2,353
Comprehensive income (loss)			142,930	16,364
Balance, end of period	$ 1,080,957	$ 888,273	$ 1,080,957	$ 888,273