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SUBSEQUENT EVENTS - Narrative (Details) - USD ($)	Oct. 17, 2018	Oct. 18, 2018	Sep. 30, 2018	Dec. 31, 2017
Subsequent Event [Line Items]
Face amount of debt instrument			$ 101,174,000	$ 108,979,000
Revolving Credit Facility | Secured Debt
Subsequent Event [Line Items]
Face amount of debt instrument			$ 1,500,000,000.0
Subsequent Event | Revolving Credit Facility | Secured Debt | SICOM Systems, Inc.
Subsequent Event [Line Items]
Draw on Revolving Credit Facility	$ 415,000,000
Subsequent Event | Term Loan B-4 | Secured Debt
Subsequent Event [Line Items]
Face amount of debt instrument		$ 500,000,000
Quarterly Installment Payments on Principal, Percentage		0.25%

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-Name Accounting Standards Codification
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-SubTopic 30
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