Quarterly report pursuant to Section 13 or 15(d)

Segment Reporting (Schedule Of Reconciliation Of Net Operating Income To Net Income Available To Common Shareholders) (Details)

v3.20.2
Segment Reporting (Schedule Of Reconciliation Of Net Operating Income To Net Income Available To Common Shareholders) (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Segment Reporting Information [Line Items]        
Net operating income $ (6,840,000) $ 15,198,000 $ 4,683,000 $ 40,863,000
Depreciation and amortization (31,670,000) (32,605,000) (92,807,000) (96,110,000)
Land and other impairments (1,292,000) (2,589,000) (23,401,000) (5,088,000)
Property impairments (36,582,000)   (36,582,000)  
Gain on change of control of interests       13,790,000
Realized gains (losses) and unrealized losses on disposition of rental property, net   (34,666,000) (7,915,000) 233,698,000
Gain on disposition of developable land   296,000 4,813,000 566,000
Gain on sale of investment in unconsolidated joint venture       903,000
Gain from extinguishment of debt, net 0 (98,000) 0 1,801,000
Income (loss) from continuing operations (76,384,000) (54,464,000) (151,209,000) 190,423,000
Income from discontinued operations 19,491,000 8,506,000 63,213,000 24,686,000
Realized gains (losses) and unrealized losses on disposition of rental property and impairments, net 15,775,000 (10,063,000) (23,900,000) (15,865,000)
Total discontinued operations, net 35,266,000 (1,557,000) 39,313,000 8,821,000
Net income (loss) (41,118,000) (56,021,000) (111,896,000) 199,244,000
Noncontrolling interests in consolidated joint ventures 895,000 405,000 1,900,000 2,500,000
Noncontrolling interests in Operating Partnership of income from continuing operations 7,874,000 6,005,000 16,166,000 (18,191,000)
Noncontrolling interests in Operating Partnership in discontinued operations (3,388,000) 154,000 (3,776,000) (896,000)
Redeemable noncontrolling interests (6,471,000) (6,471,000) (19,413,000) (16,144,000)
Net income (loss) available to common shareholders (42,208,000) (55,928,000) (117,019,000) 166,513,000
Mack-Cali Realty LP [Member]        
Segment Reporting Information [Line Items]        
Net operating income (6,840,000) 15,198,000 4,683,000 40,863,000
Depreciation and amortization (31,670,000) (32,605,000) (92,807,000) (96,110,000)
Land and other impairments (1,292,000) (2,589,000) (23,401,000) (5,088,000)
Property impairments (36,582,000)   (36,582,000)  
Gain on change of control of interests       13,790,000
Realized gains (losses) and unrealized losses on disposition of rental property, net   (34,666,000) (7,915,000) 233,698,000
Gain on disposition of developable land   296,000 4,813,000 566,000
Gain on sale of investment in unconsolidated joint venture       903,000
Gain from extinguishment of debt, net   (98,000)   1,801,000
Income (loss) from continuing operations (76,384,000) (54,464,000) (151,209,000) 190,423,000
Income from discontinued operations 19,491,000 8,506,000 63,213,000 24,686,000
Realized gains (losses) and unrealized losses on disposition of rental property and impairments, net 15,775,000 (10,063,000) (23,900,000) (15,865,000)
Total discontinued operations, net 35,266,000 (1,557,000) 39,313,000 8,821,000
Net income (loss) (41,118,000) (56,021,000) (111,896,000) 199,244,000
Noncontrolling interests in consolidated joint ventures 895,000 405,000 1,900,000 2,500,000
Redeemable noncontrolling interests (6,471,000) (6,471,000) (19,413,000) (16,144,000)
Net income (loss) available to common shareholders $ (46,694,000) $ (62,087,000) $ (129,409,000) $ 185,600,000