DEBT - Schedule of Long-Term Debt (Parenthetical) (Detail) - USD ($)	3 Months Ended	12 Months Ended
Mar. 31, 2018	Dec. 31, 2017
$1.2 billion senior credit facility weighted average rate 2.74% in 2018 and 2.55% in 2017, due in 2022
Debt Instrument [Line Items]
Maximum borrowing capacity of line of credit facility	$ 1,200,000,000
Long-term debt, weighted average interest rate	2.74%	2.55%
$950 million term loan weighted average rate 3.20% in 2018 and 2.83% in 2017, due in 2022
Debt Instrument [Line Items]
Maximum borrowing capacity of line of credit facility	$ 950,000,000
Stated interest rate	3.20%	2.83%
$125 million private placement notes 2.68%, due in 2019
Debt Instrument [Line Items]
Stated interest rate	2.68%
Long-term debt, face amount	$ 125,000,000
$225 million private placement notes 4.47%, due in 2020
Debt Instrument [Line Items]
Stated interest rate	4.47%
Long-term debt, face amount	$ 225,000,000
$150 million private placement notes 2.89%, due in 2021
Debt Instrument [Line Items]
Stated interest rate	2.89%
Long-term debt, face amount	$ 150,000,000
$125 million private placement notes 3.26%, due in 2022
Debt Instrument [Line Items]
Stated interest rate	3.26%
Long-term debt, face amount	$ 125,000,000
$200 million private placement notes 2.72%, due in 2022
Debt Instrument [Line Items]
Stated interest rate	2.72%
Long-term debt, face amount	$ 200,000,000
$100 million private placement notes 2.79%, due in 2023
Debt Instrument [Line Items]
Stated interest rate	2.79%
Long-term debt, face amount	$ 100,000,000
$150 million private placement notes 3.18%, due in 2023
Debt Instrument [Line Items]
Stated interest rate	3.18%
Long-term debt, face amount	$ 150,000,000
Promissory notes and deferred consideration weighted average rate 1.59% in 2018 and 1.49% in 2017 and weighted average maturity 2.9 years in 2018 and 2017
Debt Instrument [Line Items]
Long-term debt, weighted average interest rate	1.59%	1.49%
Long-term debt, maturity	2 years 10 months 24 days	2 years 10 months 24 days
Foreign bank debt weighted average rate 5.38% in 2018 and 6.11% in 2017 and weighted average maturity 1.5 years in 2018 and 1.7 years in 2017
Debt Instrument [Line Items]
Long-term debt, weighted average interest rate	5.38%	6.11%
Long-term debt, maturity	1 year 6 months	1 year 8 months 12 days

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

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=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

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- Definition

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

+ 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(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

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.

+ 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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Weighted average interest rate of long-term debt outstanding calculated at point in time.

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