Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net Income	$ 5,062	$ 3,736	$ 13,974	$ 11,767
Other Comprehensive Income (Loss), Net of Tax (Expense) Benefit
Foreign currency translation adjustments	10	117	(73)	205
Unrealized gain (loss) on cash flow hedges, net of tax of $(118), $(22), $(243) and $109	329	104	678	(94)
Unrealized gain (loss) on marketable securities, net of tax of $2, $0, $3 and $7	(1)	1	(5)	(5)
Defined benefit pension and postretirement plans, net of tax of $117, $(126), $235 and $48	(342)	177	(688)	(96)
Other comprehensive income (loss) attributable to Verizon	(4)	399	(88)	10
Total Comprehensive Income	5,058	4,135	13,886	11,777
Comprehensive income attributable to noncontrolling interests	138	116	385	335
Comprehensive income attributable to Verizon	4,920	4,019	13,501	11,442
Total Comprehensive Income	$ 5,058	$ 4,135	$ 13,886	$ 11,777