ORGANIZATION AND BUSINESS	12 Months Ended
Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
ORGANIZATION AND BUSINESS	ORGANIZATION AND BUSINESS Organization and Business GTT Communications, Inc. ("GTT" or the "Company") serves large enterprise and carrier clients with complex national and global networking needs, and differentiates itself from the competition by providing an outstanding service experience built on its core values of simplicity, speed and agility. The Company operates a Tier 1 internet network ranked among the largest in the industry, and owns a fiber network that includes an expansive pan-European footprint and subsea cables. The Company's global network includes over 600 unique points of presence ("PoPs") spanning six continents, and the Company provides services in more than 140 countries.

The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-URI http://asc.fasb.org/topic&trid=2122149

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-URI http://asc.fasb.org/topic&trid=2197479

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