v2.4.1.9
Commitments and Contingencies - Additional Information (Detail) (USD $)
3 Months Ended 12 Months Ended
Sep. 30, 2012
Dec. 31, 2014
LegalMatter
Dec. 31, 2012
Loss Contingencies [Line Items]      
Approximate number of federal district court actions alleged for patent infringement   70vz_ApproximateNumberOfFederalDistrictCourtActionsAllegedForPatentInfringement  
Payments for Legal Settlements $ 400,000,000us-gaap_PaymentsForLegalSettlements   $ 384,000,000us-gaap_PaymentsForLegalSettlements
Litigation settlements, payment period   6 years  
Future payments for Legal Settlements 200,000,000vz_FuturePaymentsForLegalSettlements    
Guarantee obligations, year term (in years)   30 years  
Letters of credit   100,000,000us-gaap_LettersOfCreditOutstandingAmount  
Purchase commitments   21,000,000,000us-gaap_RecordedUnconditionalPurchaseObligation  
2015   8,400,000,000us-gaap_RecordedUnconditionalPurchaseObligationDueWithinOneYear  
2016-2017   8,500,000,000vz_RecordedUnconditionalPurchaseObligationDueInSecondThroughThirdYear  
2018-2019   2,500,000,000vz_RecordedUnconditionalPurchaseObligationDueInFourthThroughFifthYear  
Thereafter   1,600,000,000us-gaap_RecordedUnconditionalPurchaseObligationDueAfterFifthYear  
Purchases against commitments   $ 21,000,000,000vz_AmountOfPurchasesAgainstCommitments