Stock Based Compensation - Additional Information (Detail) $ / shares in Units, $ in Billions |
6 Months Ended | |
|---|---|---|
|
Jun. 30, 2017
USD ($)
Installment
$ / shares
|
May 31, 2017
shares
|
|
| Verizon 2009 Plan Long Term Incentive Plan | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Shares reserved under stock based compensation | shares | 91,000,000 | |
| Restricted Stock Units and Performance Stock Units | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Unrecognized compensation expense related to the unvested portion of RSUs and PSUs | $ | $ 1.3 | |
| Weighted-average period of unrecognized compensation expense related to the unvested portion of RSUs and PSUs (in years) | 2 years | |
| Restricted Stock Units Equity Awards | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Number of equal vesting installments | Installment | 3 | |
| Weighted average grant date fair value per unit | $ / shares | $ 50.01 |