Debt - Exchange Offers (Details)	Sep. 30, 2021 USD ($)
Debt Instrument [Line Items]
Principal Amount Issued	$ 1,000,000,000
Exchange Offers
Debt Instrument [Line Items]
Principal amount exchanged	4,480,000,000
Principal Amount Issued	4,664,000,000
Debt discount	184,000,000
Exchange Offers | Verizon 0.750% - 4.150% notes and floating rate notes, due 2024 - 2026
Debt Instrument [Line Items]
Principal amount exchanged	$ 4,480,000,000
Exchange Offers | Verizon 0.750% - 4.150% notes and floating rate notes, due 2024 - 2026 | Minimum
Debt Instrument [Line Items]
Stated interest rate on debt instrument	0.75%
Exchange Offers | Verizon 0.750% - 4.150% notes and floating rate notes, due 2024 - 2026 | Maximum
Debt Instrument [Line Items]
Stated interest rate on debt instrument	4.15%
Exchange Offers | Verizon 2.355% Notes Due 2032
Debt Instrument [Line Items]
Stated interest rate on debt instrument	2.355%
Principal Amount Issued	$ 4,664,000,000