Annual report pursuant to Section 13 and 15(d)

Document And Entity Information

Document And Entity Information - USD ($)
12 Months Ended
Dec. 31, 2016
Feb. 24, 2017
Jun. 30, 2016
Entity Registrant Name MACK CALI REALTY CORP    
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2016    
Entity Central Index Key 0000924901    
Current Fiscal Year End Date --12-31    
Entity Filer Category Large Accelerated Filer    
Document Fiscal Year Focus 2016    
Document Fiscal Period Focus FY    
Entity Current Reporting Status Yes    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Public Float     $ 2,382,974,937
Entity Common Stock, Shares Outstanding   89,844,700  
Mack-Cali Realty LP [Member]      
Entity Registrant Name Mack Cali Realty LP    
Entity Central Index Key 0001067063    
Entity Filer Category Large Accelerated Filer