Debt - Schedule of Long-term Debt Obligations (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Schedule of Capitalization, Long-term Debt [Line Items]
Finance lease obligations (average rate of 2.5% and 2.2% in 2022 and 2021, respectively)	$ 1,732	$ 1,325
Unamortized discount, net of premium	(4,039)	(4,922)
Unamortized debt issuance costs	(671)	(688)
Total long-term debt, including current maturities	150,489	150,868
Less long-term debt maturing within one year	9,813	7,443
Total long-term debt	140,676	143,425
Short-term notes payable	150	0
Debt maturing within one year	9,963	7,443
Total debt	$ 150,639	$ 150,868
Finance Lease, Liability
Schedule of Capitalization, Long-term Debt [Line Items]
Finance lease obligations average rate	2.50%	2.20%
Floating Rate, Maturities Less Than 5 Years And 5 To 10 Years | Secured Overnight Financial Rate (SOFR)
Schedule of Capitalization, Long-term Debt [Line Items]
Debt instrument, percentage points added to the reference rate	3.45%
Floating Rate, Maturities Less Than 5 Years And 5 To 10 Years | One Month LIBOR
Schedule of Capitalization, Long-term Debt [Line Items]
Debt instrument, percentage points added to the reference rate	4.392%
Floating Rate, Maturities Less Than 5 Years And 5 To 10 Years | Three Month LIBOR
Schedule of Capitalization, Long-term Debt [Line Items]
Debt instrument, percentage points added to the reference rate	4.767%
Floating Rate, Maturities Less Than 5 Years | Secured Overnight Financial Rate (SOFR) | Minimum
Schedule of Capitalization, Long-term Debt [Line Items]
Debt instrument, percentage points added to the reference rate	3.807%
Floating Rate, Maturities Less Than 5 Years | Secured Overnight Financial Rate (SOFR) | Maximum
Schedule of Capitalization, Long-term Debt [Line Items]
Debt instrument, percentage points added to the reference rate	4.372%
Verizon Communications | Maturities Less Than 5 Years
Schedule of Capitalization, Long-term Debt [Line Items]
Long-term debt, gross	$ 23,929	$ 18,406
Verizon Communications | Maturities Less Than 5 Years | Minimum
Schedule of Capitalization, Long-term Debt [Line Items]
Stated interest rate on debt instrument	0.75%
Verizon Communications | Maturities Less Than 5 Years | Maximum
Schedule of Capitalization, Long-term Debt [Line Items]
Stated interest rate on debt instrument	5.82%
Verizon Communications | Maturities 5 To 10 Years
Schedule of Capitalization, Long-term Debt [Line Items]
Long-term debt, gross	$ 42,637	43,225
Verizon Communications | Maturities 5 To 10 Years | Minimum
Schedule of Capitalization, Long-term Debt [Line Items]
Stated interest rate on debt instrument	1.50%
Verizon Communications | Maturities 5 To 10 Years | Maximum
Schedule of Capitalization, Long-term Debt [Line Items]
Stated interest rate on debt instrument	7.88%
Verizon Communications | Maturities Greater Than 10 Years
Schedule of Capitalization, Long-term Debt [Line Items]
Long-term debt, gross	$ 60,134	73,520
Verizon Communications | Maturities Greater Than 10 Years | Minimum
Schedule of Capitalization, Long-term Debt [Line Items]
Stated interest rate on debt instrument	1.13%
Verizon Communications | Maturities Greater Than 10 Years | Maximum
Schedule of Capitalization, Long-term Debt [Line Items]
Stated interest rate on debt instrument	8.95%
Verizon Communications | Floating Rate, Maturities Less Than 5 Years
Schedule of Capitalization, Long-term Debt [Line Items]
Long-term debt, gross	$ 2,992	4,086
Verizon Communications | Floating Rate, Maturities 5 To 10 Years
Schedule of Capitalization, Long-term Debt [Line Items]
Long-term debt, gross	3,029	824
Alltel Corporation | Maturities 5 To 10 Years
Schedule of Capitalization, Long-term Debt [Line Items]
Long-term debt, gross	$ 94	38
Alltel Corporation | Maturities 5 To 10 Years | Minimum
Schedule of Capitalization, Long-term Debt [Line Items]
Stated interest rate on debt instrument	6.80%
Alltel Corporation | Maturities 5 To 10 Years | Maximum
Schedule of Capitalization, Long-term Debt [Line Items]
Stated interest rate on debt instrument	7.88%
Alltel Corporation | Maturities Greater Than 10 Years
Schedule of Capitalization, Long-term Debt [Line Items]
Long-term debt, gross		58
Operating telephone company subsidiaries—debentures | Maturities Less Than 5 Years
Schedule of Capitalization, Long-term Debt [Line Items]
Long-term debt, gross		141
Operating telephone company subsidiaries—debentures | Maturities 5 To 10 Years
Schedule of Capitalization, Long-term Debt [Line Items]
Long-term debt, gross	$ 475	375
Operating telephone company subsidiaries—debentures | Maturities 5 To 10 Years | Minimum
Schedule of Capitalization, Long-term Debt [Line Items]
Stated interest rate on debt instrument	6.00%
Operating telephone company subsidiaries—debentures | Maturities 5 To 10 Years | Maximum
Schedule of Capitalization, Long-term Debt [Line Items]
Stated interest rate on debt instrument	8.75%
Operating telephone company subsidiaries—debentures | Maturities Greater Than 10 Years
Schedule of Capitalization, Long-term Debt [Line Items]
Long-term debt, gross	$ 139	250
Operating telephone company subsidiaries—debentures | Maturities Greater Than 10 Years | Minimum
Schedule of Capitalization, Long-term Debt [Line Items]
Stated interest rate on debt instrument	5.13%
Operating telephone company subsidiaries—debentures | Maturities Greater Than 10 Years | Maximum
Schedule of Capitalization, Long-term Debt [Line Items]
Stated interest rate on debt instrument	7.38%
Other subsidiaries | Maturities Less Than 5 Years
Schedule of Capitalization, Long-term Debt [Line Items]
Long-term debt, gross	$ 9,767	9,620
Other subsidiaries | Maturities Less Than 5 Years | Minimum
Schedule of Capitalization, Long-term Debt [Line Items]
Stated interest rate on debt instrument	0.41%
Other subsidiaries | Maturities Less Than 5 Years | Maximum
Schedule of Capitalization, Long-term Debt [Line Items]
Stated interest rate on debt instrument	5.72%
Other subsidiaries | Floating Rate, Maturities Less Than 5 Years
Schedule of Capitalization, Long-term Debt [Line Items]
Long-term debt, gross	$ 10,271	$ 4,610