DEBT (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Long-term Debt	$ 966,298	$ 953,205
Long Term Debt Fair Value	978,652	960,271
Long-term Debt, Gross	950,668	954,342
Debt issuance costs, net	(984)	(1,137)
Unamortized interest rate swap proceeds	16,614
Less: current portion of long-term debt and short-term debt	150,668	1,259
Total long-term debt	815,630	951,946
Long-term Debt, gross [Member]
Debt Instrument [Line Items]
Long Term Debt Fair Value	963,022	961,408
Carrying Value
Debt Instrument [Line Items]
Less: current portion of long-term debt and short-term debt	150,668	1,259
Total long-term debt	815,630	951,946
Carrying Value \| 5.51% Senior notes due 2017
Debt Instrument [Line Items]
Long-term Debt	150,000	150,000
Carrying Value \| 3.84% Senior notes due 2021
Debt Instrument [Line Items]
Long-term Debt	100,000	100,307
Carrying Value \| 3.70% Senior notes due 2023
Debt Instrument [Line Items]
Long-term Debt	225,000	225,000
Carrying Value \| 3.85% Senior notes due 2025
Debt Instrument [Line Items]
Long-term Debt	100,000	100,450
Carrying Value \| 4.24% Senior notes due 2026
Debt Instrument [Line Items]
Long-term Debt	200,000	201,422
Carrying Value \| 4.05% Senior notes due 2028
Debt Instrument [Line Items]
Long-term Debt	75,000	75,904
Carrying Value \| 4.11% Senior notes due 2028
Debt Instrument [Line Items]
Long-term Debt	100,000	100,000
Carrying Value \| Other debt
Debt Instrument [Line Items]
Long-term Debt	668	1,259
Estimated Fair Value
Debt Instrument [Line Items]
Less: current portion of long-term debt and short-term debt	150,668	1,259
Total long-term debt	827,984	959,012
Estimated Fair Value \| 5.51% Senior notes due 2017
Debt Instrument [Line Items]
Long Term Debt Fair Value	154,509	158,024
Estimated Fair Value \| 3.84% Senior notes due 2021
Debt Instrument [Line Items]
Long Term Debt Fair Value	102,463	100,307
Estimated Fair Value \| 3.70% Senior notes due 2023
Debt Instrument [Line Items]
Long Term Debt Fair Value	226,946	224,322
Estimated Fair Value \| 3.85% Senior notes due 2025
Debt Instrument [Line Items]
Long Term Debt Fair Value	100,338	100,450
Estimated Fair Value \| 4.24% Senior notes due 2026
Debt Instrument [Line Items]
Long Term Debt Fair Value	203,592	201,422
Estimated Fair Value \| 4.05% Senior notes due 2028
Debt Instrument [Line Items]
Long Term Debt Fair Value	74,630	75,904
Estimated Fair Value \| 4.11% Senior notes due 2028
Debt Instrument [Line Items]
Long Term Debt Fair Value	99,876	99,720
Estimated Fair Value \| Other debt
Debt Instrument [Line Items]
Long Term Debt Fair Value	$ 668	$ 1,259

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

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Amount as of the balance sheet date of the unamortized adjustment to the carrying value of an interest-bearing hedged item made under an effective interest rate fair value hedge that is amortized upon discontinuation of the interest rate fair value hedge.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 35
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-URI http://asc.fasb.org/extlink&oid=65886642&loc=d3e75592-113984

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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