Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital (Schedule Of Weighted Average Assumptions) (Details) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Expected life (in years) | 6 years | |
| Risk-free interest rate | 1.50% | |
| Volatility | 20.26% | |
| Dividend yield | 5.65% | |
| Time Vesting Options [Member] | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Expected life (in years) | 6 years | |
| Risk-free interest rate | 2.04% | |
| Volatility | 29.00% | |
| Dividend yield | 3.50% | |
| Price Vesting Options [Member] | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Expected life (in years) | 5 years 9 months 18 days | |
| Risk-free interest rate | 1.96% | |
| Volatility | 29.00% | |
| Dividend yield | 3.50% | |