Annual report pursuant to Section 13 and 15(d)

Description of Business (Details)

v3.19.3.a.u2
Description of Business (Details)
customer in Millions, $ in Millions
12 Months Ended
Feb. 14, 2014
USD ($)
Dec. 31, 2019
item
customer
Skyhook    
Business Acquisition [Line Items]    
Number of primary products | item   2
TruePosition | Skyhook    
Business Acquisition [Line Items]    
Voting interest acquired (as a percent) 100.00%  
Cash paid for acquisition | $ $ 57.5  
Charter    
Business Acquisition [Line Items]    
Number of business and residential customers | customer   29.2