v2.4.0.8
Changes to Debt (Detail) (USD $)
In Millions, unless otherwise specified
 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Debt Instrument [Line Items]    
Debt maturing within one year, Balance at January 1, 2014 $ 3,933  
Long-term debt, Balance at January 1, 2014 89,658  
Total, Balance at January 1, 2014 93,591  
Proceeds from long-term borrowings 20,245 499
Verizon Notes 5,000  
Preferred Stock 1,650  
Repayments of long-term borrowings and capital leases obligations (11,317) (2,330)
Increase in short-term obligations, excluding current maturities 279 (432)
Other 531  
Debt maturing within one year, Balance at June 30, 2014 2,283  
Long-term debt, Balance at June 30, 2014 107,696  
Total, Balance at June 30, 2014 109,979  
Debt Maturing Within One Year
    
Debt Instrument [Line Items]    
Debt maturing within one year, Balance at January 1, 2014 3,933  
Repayments of long-term borrowings and capital leases obligations (2,516)  
Increase in short-term obligations, excluding current maturities 279  
Reclassifications of long-term debt 565  
Other 22  
Debt maturing within one year, Balance at June 30, 2014 2,283  
Long-term Debt
    
Debt Instrument [Line Items]    
Long-term debt, Balance at January 1, 2014 89,658  
Proceeds from long-term borrowings 20,245  
Verizon Notes 5,000  
Preferred Stock 1,650  
Repayments of long-term borrowings and capital leases obligations (8,801)  
Reclassifications of long-term debt (565)  
Other 509  
Long-term debt, Balance at June 30, 2014 $ 107,696