Annual report pursuant to Section 13 and 15(d)

Business and Summary of Significant Accounting Principles (Depreciation) (Details)

v2.4.0.6
Business and Summary of Significant Accounting Principles (Depreciation) (Details)
12 Months Ended
Dec. 31, 2012
Technology Equipment [Member] | Minimum [Member]
 
Property, Plant and Equipment [Line Items]  
Property Plant And Equipment Useful Life 5 years
Technology Equipment [Member] | Maximum [Member]
 
Property, Plant and Equipment [Line Items]  
Property Plant And Equipment Useful Life 20 years
Fiber optic cable systems [Member] | Minimum [Member]
 
Property, Plant and Equipment [Line Items]  
Property Plant And Equipment Useful Life 15 years
Fiber optic cable systems [Member] | Maximum [Member]
 
Property, Plant and Equipment [Line Items]  
Property Plant And Equipment Useful Life 25 years
Cable transmission equipment and distribution facilities [Member] | Minimum [Member]
 
Property, Plant and Equipment [Line Items]  
Property Plant And Equipment Useful Life 5 years
Cable transmission equipment and distribution facilities [Member] | Maximum [Member]
 
Property, Plant and Equipment [Line Items]  
Property Plant And Equipment Useful Life 30 years
Support equipment and systems [Member] | Minimum [Member]
 
Property, Plant and Equipment [Line Items]  
Property Plant And Equipment Useful Life 3 years
Support equipment and systems [Member] | Maximum [Member]
 
Property, Plant and Equipment [Line Items]  
Property Plant And Equipment Useful Life 20 years
Transportation Equipment [Member] | Minimum [Member]
 
Property, Plant and Equipment [Line Items]  
Property Plant And Equipment Useful Life 5 years
Transportation Equipment [Member] | Maximum [Member]
 
Property, Plant and Equipment [Line Items]  
Property Plant And Equipment Useful Life 13 years
Assets Held under Capital Leases [Member] | Minimum [Member]
 
Property, Plant and Equipment [Line Items]  
Property Plant And Equipment Useful Life 12 years
Assets Held under Capital Leases [Member] | Maximum [Member]
 
Property, Plant and Equipment [Line Items]  
Property Plant And Equipment Useful Life 20 years
Building [Member] | Weighted Average [Member]
 
Property, Plant and Equipment [Line Items]  
Property Plant And Equipment Useful Life 25 years
Customer premise equipment [Member] | Minimum [Member]
 
Property, Plant and Equipment [Line Items]  
Property Plant And Equipment Useful Life 2 years
Customer premise equipment [Member] | Maximum [Member]
 
Property, Plant and Equipment [Line Items]  
Property Plant And Equipment Useful Life 20 years