Quarterly report pursuant to Section 13 or 15(d)

Mack-Cali Realty Corporation Stockholders' Equity (Schedule Of Stock Option Plans) (Details)

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Mack-Cali Realty Corporation Stockholders' Equity (Schedule Of Stock Option Plans) (Details) (USD $)
 9 Months Ended
Sep. 30, 2012
Mack-Cali Realty Corporation Stockholders' Equity [Abstract]  
Shares Under Options - Outstanding, beginning balance 183,870
Shares Under Options - Outstanding, ending balance 183,870
Shares Under Options - Options exercisable 183,870
Shares Under Options - Available for grant 2,347,153
Weighted Average Exercise Price - Outstanding, beginning balance $ 29.51
Weighted Average Exercise Price - Outstanding, ending balance $ 29.51
Outstanding stock option price range, lower range $ 28.47
Outstanding stock option price range, upper range $ 45.47