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GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) - USD ($) | 7 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2016 | Dec. 31, 2017 | May 31, 2016 | May 31, 2015 | Dec. 31, 2015
Goodwill [Line Items] |  |  |  |  |
Accumulated impairment loss | $ 0 | $ 0 | $ 0 |  | $ 0
Amortization expense of acquired intangibles | $ 194,329,000 | $ 337,878,000 | $ 113,689,000 | $ 72,587,000 |
Customer-related intangible assets |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Intangible assets weighted average amortization periods | 12 years 1 month | 16 years 9 months 18 days | 13 years 10 months 24 days | 15 years 1 month 6 days |
Trade name |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Intangible assets weighted average amortization periods |  | 15 years |  |  |
Acquired technology |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Intangible assets weighted average amortization periods |  | 8 years 9 months 18 days | 5 years | 9 years 1 month 6 days |
Contract-based intangible assets |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Intangible assets weighted average amortization periods |  | 3 years |  |  |
Trademarks and trade names |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Intangible assets weighted average amortization periods |  |  | 7 years | 6 years 1 month 6 days |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a,h) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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