DEBT - Schedule of Long-Term Debt (Detail) - USD ($)	6 Months Ended
Jun. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Total debt	$ 1,668,006,000	$ 1,659,215,000
Less: current portion of total debt	129,270,000	131,969,000
Long-term portion of total debt	1,538,736,000	1,527,246,000
Obligations under capital leases
Debt Instrument [Line Items]
Total debt	7,274,000	9,185,000
$1.2 billion senior credit facility weighted average rate 1.47%, due in 2019
Debt Instrument [Line Items]
Total debt	362,590,000	459,975,000
Maximum borrowing capacity of line of credit facility	$ 1,200,000,000.0
Long-term Debt, Weighted Average Interest Rate	1.47%
$250 million term loan 0.97%, due in 2015
Debt Instrument [Line Items]
Total debt	$ 250,000,000	0
Long-term debt, face amount	$ 250,000,000
Stated interest rate	0.97%
$100 million private placement notes 5.64%, due in 2015
Debt Instrument [Line Items]
Total debt	$ 0	100,000,000
$175 million private placement notes 3.89%, due in 2017
Debt Instrument [Line Items]
Total debt	175,000,000	175,000,000
Long-term debt, face amount	$ 175,000,000.0
Stated interest rate	3.89%
$125 million private placement notes 2.68%, due in 2019
Debt Instrument [Line Items]
Total debt	$ 125,000,000	125,000,000
Long-term debt, face amount	$ 125,000,000.0
Stated interest rate	2.68%
$225 million private placement notes 4.47%, due in 2020
Debt Instrument [Line Items]
Total debt	$ 225,000,000	225,000,000
Long-term debt, face amount	$ 225,000,000.0
Stated interest rate	4.47%
$125 million private placement notes 3.26%, due in 2022
Debt Instrument [Line Items]
Total debt	$ 125,000,000	125,000,000
Long-term debt, face amount	$ 125,000,000.0
Stated interest rate	3.26%
Promissory notes and deferred consideration weighted average rate of 3.80% and weighted average maturity of 3.4 years
Debt Instrument [Line Items]
Total debt	$ 273,982,000	279,590,000
Long-term Debt, Weighted Average Interest Rate	3.80%
Long Term Debt Maturity	3 years 4 months 24 days
Foreign bank debt weighted average rate 8.86% and weighted average maturity of 1.6 years
Debt Instrument [Line Items]
Total debt	$ 124,160,000	$ 160,465,000
Long-term Debt, Weighted Average Interest Rate	8.86%
Long Term Debt Maturity	1 year 7 months 6 days

Long Term Debt, Maturity

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- Definition

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.

+ References

Reference 1: 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)

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

+ 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)

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section H

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Amount of long-term debt and capital leases due within one year or the normal operating cycle, if longer.

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Weighted average interest rate of long-term debt outstanding.

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