DEBT - Offering of Senior Unsecured Notes (Details)	Apr. 05, 2018 USD ($)	Apr. 05, 2018 EUR (€)
Senior Notes
Debt Instrument [Line Items]
Redemption Price, percentage	100.00%
Senior Notes \| 2026 Dollar Notes
Debt Instrument [Line Items]
Amount of debt \| $	$ 550,000,000.0
Stated interest rate (as a percent)	6.50%	6.50%
Senior Notes \| 2023 Euro Notes
Debt Instrument [Line Items]
Amount of debt		€ 550,000,000.0
Stated interest rate (as a percent)	4.00%	4.00%
Senior Notes \| 2026 Euro Notes
Debt Instrument [Line Items]
Amount of debt		€ 250,000,000.0
Stated interest rate (as a percent)	4.75%	4.75%
Senior Notes \| Euro Notes
Debt Instrument [Line Items]
Redemption Price, percentage	100.00%
Senior Unsecured Notes
Debt Instrument [Line Items]
Redemption Price, percentage	101.00%

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.

+ References

No definition available.

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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=75038535&loc=d3e64711-112823

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