v2.4.1.9
Outstanding Long-Term Debt Obligations (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Schedule of Capitalization, Long-term Debt [Line Items]    
Capital lease obligations (average rate of 4.0% and 8.1% in 2014 and 2013, respectively) $ 516us-gaap_CapitalLeaseObligations $ 293us-gaap_CapitalLeaseObligations
Unamortized discount, net of premium (2,954)us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet (264)us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet
Total long-term debt, including current maturities 112,933us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities 93,144us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities
Less long-term debt maturing within one year 2,397us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent 3,486us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent
Total long-term debt 110,536us-gaap_LongTermDebtAndCapitalLeaseObligations 89,658us-gaap_LongTermDebtAndCapitalLeaseObligations
Verizon Communications | 0.30% - 3.85% Notes Payable And Other    
Schedule of Capitalization, Long-term Debt [Line Items]    
Interest rate range, minimum 0.30%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum
/ us-gaap_DebtInstrumentAxis
= vz_ZeroPointThreeZeroToThreePointEightFivePercentNotesPayableAndOtherMember
/ dei_LegalEntityAxis
= vz_VerizonCommunicationsMember
 
Interest rate range, maximum 3.85%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum
/ us-gaap_DebtInstrumentAxis
= vz_ZeroPointThreeZeroToThreePointEightFivePercentNotesPayableAndOtherMember
/ dei_LegalEntityAxis
= vz_VerizonCommunicationsMember
 
Maturity date range, start 2015  
Maturity date range, end 2042  
Notes payable and other 27,617us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= vz_ZeroPointThreeZeroToThreePointEightFivePercentNotesPayableAndOtherMember
/ dei_LegalEntityAxis
= vz_VerizonCommunicationsMember
20,416us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= vz_ZeroPointThreeZeroToThreePointEightFivePercentNotesPayableAndOtherMember
/ dei_LegalEntityAxis
= vz_VerizonCommunicationsMember
Verizon Communications | 4.15% - 5.50% Notes Payable And Other    
Schedule of Capitalization, Long-term Debt [Line Items]    
Interest rate range, minimum 4.15%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum
/ us-gaap_DebtInstrumentAxis
= vz_FourPointOneFivePercentageToFivePointFiveZeroPercentageNotesPayableAndOtherMember
/ dei_LegalEntityAxis
= vz_VerizonCommunicationsMember
 
Interest rate range, maximum 5.50%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum
/ us-gaap_DebtInstrumentAxis
= vz_FourPointOneFivePercentageToFivePointFiveZeroPercentageNotesPayableAndOtherMember
/ dei_LegalEntityAxis
= vz_VerizonCommunicationsMember
 
Maturity date range, start 2018  
Maturity date range, end 2054  
Notes payable and other 40,701us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= vz_FourPointOneFivePercentageToFivePointFiveZeroPercentageNotesPayableAndOtherMember
/ dei_LegalEntityAxis
= vz_VerizonCommunicationsMember
20,226us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= vz_FourPointOneFivePercentageToFivePointFiveZeroPercentageNotesPayableAndOtherMember
/ dei_LegalEntityAxis
= vz_VerizonCommunicationsMember
Verizon Communications | 5.85% - 6.90% Notes Payable And Other    
Schedule of Capitalization, Long-term Debt [Line Items]    
Interest rate range, minimum 5.85%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum
/ us-gaap_DebtInstrumentAxis
= vz_FivePointEightFivePercentageToSixPointNineZeroPercentageNotesPayableAndOtherMember
/ dei_LegalEntityAxis
= vz_VerizonCommunicationsMember
 
Interest rate range, maximum 6.90%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum
/ us-gaap_DebtInstrumentAxis
= vz_FivePointEightFivePercentageToSixPointNineZeroPercentageNotesPayableAndOtherMember
/ dei_LegalEntityAxis
= vz_VerizonCommunicationsMember
 
Maturity date range, start 2018  
Maturity date range, end 2054  
Notes payable and other 24,341us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= vz_FivePointEightFivePercentageToSixPointNineZeroPercentageNotesPayableAndOtherMember
/ dei_LegalEntityAxis
= vz_VerizonCommunicationsMember
31,965us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= vz_FivePointEightFivePercentageToSixPointNineZeroPercentageNotesPayableAndOtherMember
/ dei_LegalEntityAxis
= vz_VerizonCommunicationsMember
Verizon Communications | 7.35% - 8.95% Notes Payable And Other    
Schedule of Capitalization, Long-term Debt [Line Items]    
Interest rate range, minimum 7.35%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum
/ us-gaap_DebtInstrumentAxis
= vz_SevenPointThreeFivePercentageToEightPointNineFivePercentageNotesPayableAndOtherMember
/ dei_LegalEntityAxis
= vz_VerizonCommunicationsMember
 
Interest rate range, maximum 8.95%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum
/ us-gaap_DebtInstrumentAxis
= vz_SevenPointThreeFivePercentageToEightPointNineFivePercentageNotesPayableAndOtherMember
/ dei_LegalEntityAxis
= vz_VerizonCommunicationsMember
 
Maturity date range, start 2018  
Maturity date range, end 2039  
Notes payable and other 2,264us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= vz_SevenPointThreeFivePercentageToEightPointNineFivePercentageNotesPayableAndOtherMember
/ dei_LegalEntityAxis
= vz_VerizonCommunicationsMember
5,023us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= vz_SevenPointThreeFivePercentageToEightPointNineFivePercentageNotesPayableAndOtherMember
/ dei_LegalEntityAxis
= vz_VerizonCommunicationsMember
Verizon Communications | Floating Notes Payable And Other    
Schedule of Capitalization, Long-term Debt [Line Items]    
Maturity date range, start 2015  
Maturity date range, end 2025  
Notes payable and other 14,600us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= vz_FloatingNotesPayableAndOtherMember
/ dei_LegalEntityAxis
= vz_VerizonCommunicationsMember
5,500us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= vz_FloatingNotesPayableAndOtherMember
/ dei_LegalEntityAxis
= vz_VerizonCommunicationsMember
Verizon Wireless | 8.75% - 8.88% Notes Payable and Other    
Schedule of Capitalization, Long-term Debt [Line Items]    
Interest rate range, minimum 8.75%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum
/ us-gaap_DebtInstrumentAxis
= vz_EightPointSevenFiveToEightPointEightEightPercentNotesPayableAndOtherMember
/ dei_LegalEntityAxis
= vz_VerizonWirelessMember
 
Interest rate range, maximum 8.88%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum
/ us-gaap_DebtInstrumentAxis
= vz_EightPointSevenFiveToEightPointEightEightPercentNotesPayableAndOtherMember
/ dei_LegalEntityAxis
= vz_VerizonWirelessMember
 
Maturity date range, start 2015  
Maturity date range, end 2018  
Notes payable and other 676us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= vz_EightPointSevenFiveToEightPointEightEightPercentNotesPayableAndOtherMember
/ dei_LegalEntityAxis
= vz_VerizonWirelessMember
3,931us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= vz_EightPointSevenFiveToEightPointEightEightPercentNotesPayableAndOtherMember
/ dei_LegalEntityAxis
= vz_VerizonWirelessMember
Verizon Wireless | 6.80% - 7.88% Alltel assumed notes    
Schedule of Capitalization, Long-term Debt [Line Items]    
Interest rate range, minimum 6.80%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum
/ us-gaap_DebtInstrumentAxis
= vz_SixPointEightZeroPercentageToSevenPointEightEightPercentageAssumedNotesMember
/ dei_LegalEntityAxis
= vz_VerizonWirelessMember
 
Interest rate range, maximum 7.88%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum
/ us-gaap_DebtInstrumentAxis
= vz_SixPointEightZeroPercentageToSevenPointEightEightPercentageAssumedNotesMember
/ dei_LegalEntityAxis
= vz_VerizonWirelessMember
 
Maturity date range, start 2029  
Maturity date range, end 2032  
Notes payable and other 686us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= vz_SixPointEightZeroPercentageToSevenPointEightEightPercentageAssumedNotesMember
/ dei_LegalEntityAxis
= vz_VerizonWirelessMember
1,300us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= vz_SixPointEightZeroPercentageToSevenPointEightEightPercentageAssumedNotesMember
/ dei_LegalEntityAxis
= vz_VerizonWirelessMember
Telephone Subsidiaries | 5.13% - 6.86% Debentures    
Schedule of Capitalization, Long-term Debt [Line Items]    
Interest rate range, minimum 5.13%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum
/ us-gaap_DebtInstrumentAxis
= vz_FivePointOneThreeToSixPointEightSixPercentDebentureMember
/ dei_LegalEntityAxis
= vz_TelephoneSubsidiariesMember
 
Interest rate range, maximum 6.86%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum
/ us-gaap_DebtInstrumentAxis
= vz_FivePointOneThreeToSixPointEightSixPercentDebentureMember
/ dei_LegalEntityAxis
= vz_TelephoneSubsidiariesMember
 
Maturity date range, start 2027  
Maturity date range, end 2033  
Notes payable and other 1,075us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= vz_FivePointOneThreeToSixPointEightSixPercentDebentureMember
/ dei_LegalEntityAxis
= vz_TelephoneSubsidiariesMember
1,075us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= vz_FivePointOneThreeToSixPointEightSixPercentDebentureMember
/ dei_LegalEntityAxis
= vz_TelephoneSubsidiariesMember
Telephone Subsidiaries | 7.38% - 7.88% Debentures    
Schedule of Capitalization, Long-term Debt [Line Items]    
Interest rate range, minimum 7.38%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum
/ us-gaap_DebtInstrumentAxis
= vz_SevenPointThreeEightPercentageToSevenPointEightEightPercentageDebenturesMember
/ dei_LegalEntityAxis
= vz_TelephoneSubsidiariesMember
 
Interest rate range, maximum 7.88%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum
/ us-gaap_DebtInstrumentAxis
= vz_SevenPointThreeEightPercentageToSevenPointEightEightPercentageDebenturesMember
/ dei_LegalEntityAxis
= vz_TelephoneSubsidiariesMember
 
Maturity date range, start 2022  
Maturity date range, end 2032  
Notes payable and other 1,099us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= vz_SevenPointThreeEightPercentageToSevenPointEightEightPercentageDebenturesMember
/ dei_LegalEntityAxis
= vz_TelephoneSubsidiariesMember
1,099us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= vz_SevenPointThreeEightPercentageToSevenPointEightEightPercentageDebenturesMember
/ dei_LegalEntityAxis
= vz_TelephoneSubsidiariesMember
Telephone Subsidiaries | 8.00% - 8.75% Debentures    
Schedule of Capitalization, Long-term Debt [Line Items]    
Interest rate range, minimum 8.00%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum
/ us-gaap_DebtInstrumentAxis
= vz_EightPercentageToEightPointSevenFivePercentageDebenturesMember
/ dei_LegalEntityAxis
= vz_TelephoneSubsidiariesMember
 
Interest rate range, maximum 8.75%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum
/ us-gaap_DebtInstrumentAxis
= vz_EightPercentageToEightPointSevenFivePercentageDebenturesMember
/ dei_LegalEntityAxis
= vz_TelephoneSubsidiariesMember
 
Maturity date range, start 2019  
Maturity date range, end 2031  
Notes payable and other 880us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= vz_EightPercentageToEightPointSevenFivePercentageDebenturesMember
/ dei_LegalEntityAxis
= vz_TelephoneSubsidiariesMember
880us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= vz_EightPercentageToEightPointSevenFivePercentageDebenturesMember
/ dei_LegalEntityAxis
= vz_TelephoneSubsidiariesMember
Other Subsidiaries | 6.84% - 8.75% Debentures And Other    
Schedule of Capitalization, Long-term Debt [Line Items]    
Interest rate range, minimum 6.84%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum
/ us-gaap_DebtInstrumentAxis
= vz_SixPointEightFourPercentageToEightPointSevenFivePercentageDebenturesMember
/ dei_LegalEntityAxis
= vz_OtherSubsidiariesMember
 
Interest rate range, maximum 8.75%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum
/ us-gaap_DebtInstrumentAxis
= vz_SixPointEightFourPercentageToEightPointSevenFivePercentageDebenturesMember
/ dei_LegalEntityAxis
= vz_OtherSubsidiariesMember
 
Maturity date range, start 2018  
Maturity date range, end 2028  
Notes payable and other $ 1,432us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= vz_SixPointEightFourPercentageToEightPointSevenFivePercentageDebenturesMember
/ dei_LegalEntityAxis
= vz_OtherSubsidiariesMember
$ 1,700us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= vz_SixPointEightFourPercentageToEightPointSevenFivePercentageDebenturesMember
/ dei_LegalEntityAxis
= vz_OtherSubsidiariesMember