v2.4.0.8
Summary of Plant Property and Equipment (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Buildings and Equipment
Minimum
Dec. 31, 2013
Buildings and Equipment
Maximum
Dec. 31, 2013
Central Office and Other Network Equipment
Minimum
Dec. 31, 2013
Central Office and Other Network Equipment
Maximum
Dec. 31, 2013
Cable Poles and Conduit
Minimum
Dec. 31, 2013
Cable Poles and Conduit
Maximum
Dec. 31, 2013
Leasehold Improvements
Minimum
Dec. 31, 2013
Leasehold Improvements
Maximum
Dec. 31, 2013
Furniture Vehicles and Other
Minimum
Dec. 31, 2013
Furniture Vehicles and Other
Maximum
Property, Plant and Equipment [Line Items]                        
Property, Plant and Equipment, Useful Life (years)     15 years 45 years 3 years 15 years 11 years 50 years 5 years 20 years 3 years 20 years
Land $ 819 $ 859                    
Buildings and equipment 23,857 22,909                    
Central office and other network equipment 121,594 113,262                    
Cable, poles and conduit 55,240 53,761                    
Leasehold improvements 5,877 5,404                    
Work in progress 4,176 4,126                    
Furniture, vehicles and other 9,302 9,254                    
Plant, property and equipment 220,865 209,575                    
Less accumulated depreciation 131,909 120,933                    
Total $ 88,956 $ 88,642