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LONG-TERM DEBT (Details) |  |  |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Aug. 31, 2016 EUR (€) | May 16, 2016 USD ($) | Aug. 26, 2015 GBP (£) | Jun. 11, 2015 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2016 CAD | Dec. 31, 2015 USD ($) | Dec. 31, 2015 CAD | Dec. 31, 2014 USD ($) | Dec. 31, 2016 EUR (€) | Sep. 30, 2014 CAD
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Repayments debt |  |  |  |  | $ 262,248,000 |  | $ 52,838,000 |  | $ 170,907,000 |  |
August 2016 Credit Agreement [Member] | Term loan [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Face amount of debt | € | € 110,000,000 |  |  |  |  |  |  |  |  |  |
Debt issuance costs and discounts | € | € 500,000 |  |  |  |  |  |  |  |  |  |
Debt, term | 5 years |  |  |  |  |  |  |  |  |  |
Effective interest rate |  |  |  |  | 0.45% |  |  |  |  | 0.45% |
August 2016 Credit Agreement [Member] | Revolving credit facility [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity | € | € 20,000,000 |  |  |  |  |  |  |  |  |  |
Commitment fee percentage |  |  |  |  | 0.1225% | 0.1225% |  |  |  |  |
Long-term line of credit, outstanding borrowings | € |  |  |  |  |  |  |  |  |  | € 5,000,000 |
Effective interest rate |  |  |  |  | 0.35% |  |  |  |  | 0.35% |
Senior notes [Member] | Unsecured Senior Notes, 3.75% [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Face amount of debt |  | $ 400,000,000 |  |  |  |  |  |  |  |  |
Stated interest rate |  | 3.75% |  |  | 3.75% |  |  |  |  | 3.75% |
Basis points |  | 0.20% |  |  |  |  |  |  |  |  |
Debt issuance costs and discounts |  | $ 7,000,000 |  |  |  |  |  |  |  |  |
Debt, fair value |  |  |  |  | $ 371,000,000 |  |  |  |  |  |
Senior notes [Member] | Unsecured Senior Notes, 3.75% [Member] | Debt redemption, period one [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt redemption percentage |  | 101.00% |  |  |  |  |  |  |  |  |
Senior notes [Member] | Unsecured Senior Notes, 3.75% [Member] | Debt redemption, period two [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt redemption percentage |  | 100.00% |  |  |  |  |  |  |  |  |
Senior notes [Member] | Unsecured Senior Notes, 4.60% [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Face amount of debt |  |  |  | $ 1,000,000,000 |  |  |  |  |  |  |
Stated interest rate |  |  |  | 4.60% | 4.60% |  |  |  |  | 4.60% |
Basis points |  |  |  | 0.25% |  |  |  |  |  |  |
Debt issuance costs and discounts |  |  |  | $ 11,000,000 |  |  |  |  |  |  |
Debt, fair value |  |  |  |  | $ 1,100,000,000 |  | $ 1,000,000,000 |  |  |  |
Senior notes [Member] | Unsecured Senior Notes, 4.60% [Member] | Debt redemption, period one [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt redemption percentage |  |  |  | 101.00% |  |  |  |  |  |  |
Senior notes [Member] | Unsecured Senior Notes, 4.60% [Member] | Debt redemption, period two [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt redemption percentage |  |  |  | 100.00% |  |  |  |  |  |  |
Line of credit [Member] | Revolving credit facility [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity | £ |  |  | £ 20,000,000 |  |  |  |  |  |  |  |
Commitment fee percentage |  |  |  |  | 0.26% | 0.26% |  |  |  |  |
Long-term line of credit, outstanding borrowings |  |  |  |  | $ 0 |  |  |  |  |  |
Term loan [Member] | British pound term loan [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Face amount of debt | £ |  |  | £ 160,000,000 |  |  |  |  |  |  |  |
Debt, term |  |  | 5 years |  |  |  |  |  |  |  |
Semi annual payments | £ |  |  | £ 4,000,000 |  |  |  |  |  |  |  |
Weighted average interest rate |  |  |  |  | 1.17% |  | 1.26% |  |  | 1.17% |
Revolving credit facility [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity | CAD |  |  |  |  |  |  |  |  |  |  | CAD 175,000,000
Weighted average interest rate |  |  |  |  | 1.59% |  |  |  |  | 1.59% |
Commitment fee percentage |  |  |  |  | 0.07% | 0.07% |  |  |  |  |
Revolving credit facility, initiation date |  |  |  |  | Sep. 29, 2014 | Sep. 29, 2014 |  |  |  |  |
Revolving credit facility, maturity date |  |  |  |  | Sep. 24, 2019 | Sep. 24, 2019 |  |  |  |  |
Proceeds from revolving credit facility | CAD |  |  |  |  |  | CAD 135,000,000 |  | CAD 150,000,000 |  |  |
Required principal payments |  |  |  |  | $ 0 |  |  |  |  |  |
Euro term loan and revolving credit facility [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Repayments debt | € | € 102,500,000 |  |  |  |  |  |  |  |  |  |
Euro Interbank Offered Rate (EURIBOR) [Member] | August 2016 Credit Agreement [Member] | Term loan [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Basis points | 0.45% |  |  |  |  |  |  |  |  |  |
Euro Interbank Offered Rate (EURIBOR) [Member] | August 2016 Credit Agreement [Member] | Revolving credit facility [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Basis points | 0.35% |  |  |  |  |  |  |  |  |  |

X
- Definition Amount of the total principal payments made during the annual reporting period. + 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 + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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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=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 + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + 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 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 + Details
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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. + References No definition available. + Details
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- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + 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)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of the required periodic payments applied to principal. + 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 + Details
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- Definition Percentage price of original principal amount of debt at which debt can be redeemed by the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph e -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 + Details
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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. + References No definition available. + Details
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- Definition Weighted average interest rate of debt outstanding. + References No definition available. + Details
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- Definition Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the 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)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: 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 3: 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(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used. + References No definition available. + Details
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- Definition Date the credit facility first became available, in CCYY-MM-DD format. + 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 + Details
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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 + Details
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- Definition 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. + References No definition available. + Details
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