Schedule of Borrowings (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Total borrowings	$ 787,920	$ 808,810
Less current portion	5,152	2,444
Total long-term borrowings	782,768	806,366
4.2% Senior Notes
Debt Instrument [Line Items]
Long-term borrowings	349,179	349,125
4.5 % Senior Notes
Debt Instrument [Line Items]
Long-term borrowings	298,655	298,555
2.58% Senior Euro Notes
Debt Instrument [Line Items]
Long-term borrowings	104,328	104,655
Revolving Credit Facility
Debt Instrument [Line Items]
Revolving Facility	27,000	50,798
Other Borrowings
Debt Instrument [Line Items]
Long-term borrowings	$ 8,758	$ 5,677