Real Estate Investments - Schedule of Carrying Value of Real Estate Investments (Details)
$ in Thousands
5 Months Ended
Sep. 30, 2015
USD ($)
Real Estate Investments [Line Items]  
Real estate investments $ 6,026,679
Accumulated depreciation - real estate investments (3,637,594)
Net real estate investments 2,389,085
Land  
Real Estate Investments [Line Items]  
Real estate investments 33,065
Building and Improvements  
Real Estate Investments [Line Items]  
Real estate investments 310,591
Poles  
Real Estate Investments [Line Items]  
Real estate investments 226,899
Fiber  
Real Estate Investments [Line Items]  
Real estate investments 1,890,317
Copper  
Real Estate Investments [Line Items]  
Real estate investments 3,469,232
Conduit  
Real Estate Investments [Line Items]  
Real estate investments 89,460
Construction in progress  
Real Estate Investments [Line Items]  
Real estate investments $ 7,115
Minimum | Building and Improvements  
Real Estate Investments [Line Items]  
Depreciable Lives 3 years
Minimum | Poles  
Real Estate Investments [Line Items]  
Depreciable Lives 13 years
Minimum | Fiber  
Real Estate Investments [Line Items]  
Depreciable Lives 7 years
Minimum | Copper  
Real Estate Investments [Line Items]  
Depreciable Lives 7 years
Minimum | Conduit  
Real Estate Investments [Line Items]  
Depreciable Lives 13 years
Maximum | Building and Improvements  
Real Estate Investments [Line Items]  
Depreciable Lives 40 years
Maximum | Poles  
Real Estate Investments [Line Items]  
Depreciable Lives 40 years
Maximum | Fiber  
Real Estate Investments [Line Items]  
Depreciable Lives 40 years
Maximum | Copper  
Real Estate Investments [Line Items]  
Depreciable Lives 40 years
Maximum | Conduit  
Real Estate Investments [Line Items]  
Depreciable Lives 47 years