XML 35 R24.htm IDEA: XBRL DOCUMENT v3.8.0.1
Description of Business and Accounting Policies (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Oct. 27, 2017
Jul. 27, 2017
Jul. 09, 2017
Dec. 31, 2016
Number of customers that exceed 10% of total accounts receivable   1       1          
Accounts Receivable from customers greater than 10%, percentage   14.00%       14.00%         21.00%
Revenue from customers greater than 10%, percentage         12.00%   12.00%        
Common Stock, Par or Stated Value Per Share   $ 0.01       $ 0.01       $ 0.01 $ 0.01
Share Price               $ 19.45      
Committed senior secured credit facilities and senior notes                 $ 1,150.0    
Available-for-Sale Securities, Shares Sold       2,800,000              
Proceeds from Sale of Available-for-sale Securities, Equity       $ 140.7   $ 140.7 $ 181.2        
Gain on sale of Investment in CyrusOne   $ 0.0   (117.7) $ (33.3) (117.7) $ (151.9)        
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax   $ 10.2       $ 10.2         $ 14.5
Income Tax Credits and Adjustments     $ 14.5                
Defined Benefit Plan, Cost Reclassified, Cost of Services       2.0              
Defined Benefit Plan, Cost Reclassified, SG&A costs       1.0              
Hawaiian Telcom Holdco, Inc. [Member]                      
Business Combination, Consideration Transferred     380.0                
Common Stock, Par or Stated Value Per Share                   $ 0.01  
Business combination exchange ratio, Share Consideration   1.6305                  
Business combination exchange ratio, shares, Mixed Consideration   0.6522                  
Business combination exchange ratio, cash, Mixed Consideration   $ 18.45                  
Business combination exchange ratio, Cash Consideration   $ 30.75                  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt     $ 310.0                
OnX Holdings LLC [Member]                      
Business Combination, Consideration Transferred, Excluding Working Capital Adjustment   $ 201.0                  
Business Combination, Consideration Transferred $ 242.3                    
SunTel Services [Member]                      
Business Combination, Consideration Transferred       10.0              
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment       0.4              
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill       1.2              
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Working Capital       4.1              
Goodwill, Acquired During Period       $ 4.3