Acquisitions (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($)
Wilcon Acquisition [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred	$ 600,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets	130,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	130,000
Business Acquisition, Goodwill	$ 380,000
Fiber Miles Acquired	1,900
FiberNet Acquisition [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	$ 56,569
Business Combination, Revenue of Acquiree since Acquisition Date, Actual	71,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets	328,138
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	72
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	439,961
Business Acquisition, Goodwill	$ 772,177	[1]
Fiber Miles Acquired	11,500
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	$ (34,552)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities	(41,535)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	$ 1,520,830	[2]
Top Metro Markets [Domain] | FiberNet Acquisition [Member]
Business Acquisition [Line Items]
Fiber Miles Acquired	6,000
FiberNet Acquisition [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred	$ 1,520,830
Business Acquisition, Date of Acquisition Agreement	Jan. 17, 2017

[1] The preliminary purchase price allocation for the FiberNet Acquisition resulted in the recognition of goodwill based on:•the Company's expectation to leverage the FiberNet fiber footprint to support new small cell networks and fiber based solutions,•the complementary nature of the FiberNet fiber to the Company's existing fiber assets and its location in top metro markets where the Company expects to see wireless carrier network investments,•the Company's belief that the acquired fiber assets are well-positioned to benefit from the continued growth trends in the wireless industry, and•other intangibles not qualified for separate recognition, including the assembled workforce.

[2] The vast majority of assets acquired in the FiberNet Acquisition are expected to be included in the Company's REIT and as such, no deferred taxes were recorded in connection with the FiberNet Acquisition.