Long-Term Debt (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Long-term debt	$ 1,356,084	$ 1,384,639
Less: current portion	87,781	100,526
Total	1,268,303	1,284,113
$1 billion revolver weighted average rate 1.62%, due in 2016
Debt Instrument [Line Items]
Long-term debt	225,931	527,884
$100 million Private Placement notes 5.64%, due in 2015
Debt Instrument [Line Items]
Long-term debt	100,000	100,000
$175 million Private Placement notes 3.89%, due in 2017
Debt Instrument [Line Items]
Long-term debt	175,000	175,000
$125 million Private Placements notes 2.68% due in 2019
Debt Instrument [Line Items]
Long-term debt	125,000	0
$225 million Private Placement notes 4.47%, due in 2020
Debt Instrument [Line Items]
Long-term debt	225,000	225,000
$125 million Private Placements notes 3.26% due in 2022
Debt Instrument [Line Items]
Long-term debt	125,000	0
Acquisition notes weighted average rate of 2.60% and weighted average maturity of 3.8 years
Debt Instrument [Line Items]
Long-term debt	235,856	240,138
Foreign bank debt weighted average rate 5.83% and Weighted average maturity of 2.0 years
Debt Instrument [Line Items]
Long-term debt	139,063	111,938
Obligations under capital leases
Debt Instrument [Line Items]
Long-term debt	$ 5,234	$ 4,679

Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.13,16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year or the normal operating cycle, if longer plus capital lease obligations due to be paid more than one year after the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section H

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Obligation related to long-term debt (excluding convertible debt) and capital leases, the portion which is due in one year or less in the future.

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