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LONG-TERM DEBT (Details) |  |  | 1 Months Ended | 12 Months Ended | 24 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Aug. 31, 2016 EUR (€) | Sep. 30, 2014 CAD ($) | Aug. 31, 2015 GBP (£) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | May 31, 2017 USD ($) | May 31, 2016 USD ($) | Jun. 30, 2015 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Repayments debt |  |  |  | $ 96,000,000 | $ 39,000,000 | $ 263,000,000 |  |  |
August 2016 Credit Agreement [Member] | Revolving credit facility [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowing capacity | € | € 20,000,000 |  |  |  |  |  |  |  |
Senior notes [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt issuance costs and discounts |  |  |  |  |  |  | $ 24,000,000 |  |
Senior notes [Member] | Debt redemption, period one [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt redemption percentage |  |  |  |  |  |  | 101.00% |  |
Senior notes [Member] | Debt redemption, period two [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt redemption percentage |  |  |  |  |  |  | 100.00% |  |
Senior notes [Member] | Unsecured Senior Notes, 4.20% [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Face amount of debt |  |  |  |  |  |  | $ 400,000,000 |  |
Stated interest rate |  |  |  | 4.20% |  |  | 4.20% |  |
Long-term Debt, Fair Value |  |  |  | $ 383,000,000 | 411,000,000 |  |  |  |
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% |
Long-term Debt, Fair Value |  |  |  | $ 357,000,000 | 384,000,000 |  |  |  |
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%
Long-term Debt, Fair Value |  |  |  | $ 1,026,000,000 | $ 1,089,000,000 |  |  |  |
Line of credit [Member] | Revolving credit facility [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowing capacity | £ |  |  | £ 20,000,000 |  |  |  |  |  |
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 |  |  |  | 1.34% | 1.04% |  |  |  |
Term loan [Member] | August 2016 Credit Agreement [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Face amount of debt | € | € 110,000,000 |  |  |  |  |  |  |  |
Debt, term | 5 years |  |  |  |  |  |  |  |
Effective interest rate |  |  |  | 0.45% | 0.45% |  |  |  |
Revolving credit facility [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  | $ 175,000,000 |  |  |  |  |  |  |
Weighted average interest rate |  |  |  | 2.50% |  |  |  |  |
Euro term loan [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term Debt, Fair Value |  |  |  | $ 126,000,000 | $ 132,000,000 |  |  |  |
Repayments debt | € | € 102,500,000 |  |  |  |  |  |  |  |
London Interbank Offered Rate (LIBOR) [Member] | Term loan [Member] | British pound term loan [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Basis points |  |  | 0.75% |  |  |  |  |  |
Euro Interbank Offered Rate (EURIBOR) [Member] | Term loan [Member] | August 2016 Credit Agreement [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Basis points | 0.45% |  |  |  |  |  |  |  |
Canadian Dollar Offered Rate (CDOR) [Member] | Revolving credit facility [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Basis points |  | 0.80% |  |  |  |  |  |  |
Minimum [Member] | Senior notes [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Basis points |  |  |  |  |  |  | 20.00% |  |
Maximum [Member] | Senior notes [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Basis points |  |  |  |  |  |  | 25.00% |  |

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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 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 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 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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