| Component: (Network and Table) | |
|---|---|
| Network | 2438408 - Disclosure - Stock-Based Compensation - Summary of Changes in Status of Time-Based Awards (Details) (http://www.coned.com/role/StockBasedCompensationSummaryOfChangesInStatusOfTimeBasedAwardsDetails) |
| Table | Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] |
| Reporting Entity [Axis] | 0001047862 (http://www.sec.gov/CIK) |
| Award Type [Axis] | Time-based Awards |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | Period [Axis] | |
|---|---|---|
2016-01-01 - 2016-12-31 | ||
| Legal Entity [Axis] | ||
| CECONY | Entity [Domain] | |
Units | ||
Non-vested at beginning of period (in units) | ||
Granted (in units) | ||
Vested (in units) | ( | ( |
Forfeited (in units) | ( | ( |
Non-vested at end of period (in units) | ||
Weighted Average Grant Date Fair Value | ||
Non-vested at beginning of period (in dollars per share) | ||
Granted (in dollars per share) | 76.62 | 76.62 |
Vested (in dollars per share) | ||
Forfeited (in dollars per share) | ||
Non-vested at end of period (in dollars per share) | ||