CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY
Cash dividends declared, Common, per share (in dollars per share)	$ 0.82	$ 0.82	$ 0.805
Translation adjustments, deferred income taxes	$ 2,504	$ 7,612	$ (21,866)
Cash flow hedging instrument adjustments, deferred income taxes	(2,101)	347	10,849
Pension liability adjustments, deferred income taxes	19,143	(9,727)	26,012
Marketable securities unrealized gains (loss), deferred income taxes	$ 7	$ (7)	$ (2)
Stock options exercised (in shares)	157,058	91,485	76,605
Vesting of restricted stock units (in shares)	92,630	69,515	101,918
Treasury shares repurchased (in shares)	286,577