Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital (Schedule Of Reconciliation Of Shares Used In Basic EPS Calculation To Shares Used In Diluted EPS Calculation) (Details) - shares shares in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2021 |
Jun. 30, 2020 |
Jun. 30, 2021 |
Jun. 30, 2020 |
|
| Stockholders Equity [Line Items] | ||||
| Basic EPS shares | 90,774 | 90,629 | 90,733 | 90,622 |
| Add: Operating Partnership - common and vested LTIP units | 9,099 | 9,584 | 9,084 | 9,576 |
| Diluted EPS Shares | 99,873 | 100,213 | 99,817 | 100,198 |
| Mack-Cali Realty LP [Member] | ||||
| Stockholders Equity [Line Items] | ||||
| Basic EPU units | 99,873 | 100,213 | 99,817 | 100,198 |
| Diluted EPU Units | 99,873 | 100,213 | 99,817 | 100,198 |