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Segment Reporting (Details 3) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Segment Reporting |  |  |  |
Total revenue | $ 575,982 | $ 550,500 | $ 1,706,015 | $ 1,603,337
NOI | 399,870 | 370,125 | 1,173,027 | 1,077,410
Gross real estate | 22,435,859 | 21,546,649 | 22,435,859 | 21,546,649
Gross real estate assets held for sale | 109,900 | 53,723 | 109,900 | 53,723
Operating Segments | Established |  |  |  |
Segment Reporting |  |  |  |
Total revenue | 427,023 | 417,330 | 1,266,066 | 1,236,208
NOI | 303,076 | 293,955 | 897,954 | 876,922
Gross real estate | 14,585,970 | 14,411,614 | 14,585,970 | 14,411,614
Operating Segments | Established | New England |  |  |  |
Segment Reporting |  |  |  |
Total revenue | 60,690 | 58,872 | 178,841 | 174,018
NOI | 40,005 | 38,635 | 117,008 | 113,423
Gross real estate | 2,006,671 | 1,988,987 | 2,006,671 | 1,988,987
Operating Segments | Established | Metro NY/NJ |  |  |  |
Segment Reporting |  |  |  |
Total revenue | 106,341 | 105,225 | 315,683 | 311,301
NOI | 74,562 | 71,864 | 219,396 | 215,187
Gross real estate | 3,729,612 | 3,617,773 | 3,729,612 | 3,617,773
Operating Segments | Established | Mid-Atlantic |  |  |  |
Segment Reporting |  |  |  |
Total revenue | 59,752 | 58,561 | 177,342 | 174,653
NOI | 41,432 | 40,020 | 123,056 | 120,186
Gross real estate | 2,223,386 | 2,213,522 | 2,223,386 | 2,213,522
Operating Segments | Established | Pacific Northwest |  |  |  |
Segment Reporting |  |  |  |
Total revenue | 22,014 | 21,531 | 64,609 | 62,833
NOI | 15,681 | 15,692 | 45,753 | 45,632
Gross real estate | 726,752 | 723,674 | 726,752 | 723,674
Operating Segments | Established | Northern California |  |  |  |
Segment Reporting |  |  |  |
Total revenue | 92,292 | 89,798 | 274,206 | 267,316
NOI | 70,465 | 68,731 | 209,866 | 205,168
Gross real estate | 2,983,019 | 2,966,133 | 2,983,019 | 2,966,133
Operating Segments | Established | Southern California |  |  |  |
Segment Reporting |  |  |  |
Total revenue | 85,934 | 83,343 | 255,385 | 246,087
NOI | 60,931 | 59,013 | 182,875 | 177,326
Gross real estate | 2,916,530 | 2,901,525 | 2,916,530 | 2,901,525
Operating Segments | Other Stabilized |  |  |  |
Segment Reporting |  |  |  |
Total revenue | 66,542 | 52,885 | 195,034 | 137,739
NOI | 45,196 | 34,746 | 132,498 | 88,946
Gross real estate | 2,740,944 | 2,477,846 | 2,740,944 | 2,477,846
Operating Segments | Development / Redevelopment |  |  |  |
Segment Reporting |  |  |  |
Total revenue | 77,499 | 63,012 | 217,416 | 171,297
NOI | 51,598 | 41,424 | 142,575 | 111,542
Gross real estate | 4,895,487 | 3,847,578 | 4,895,487 | 3,847,578
Operating Segments | Disposals [Member] |  |  |  |
Segment Reporting |  |  |  |
Gross real estate |  | 629,970 |  | 629,970
Land Held for Future Development |  |  |  |
Segment Reporting |  |  |  |
Gross real estate | 116,582 | 85,863 | 116,582 | 85,863
Non-allocated |  |  |  |
Segment Reporting |  |  |  |
Total revenue | 912 | 993 | 2,752 | 3,290
Gross real estate | 96,876 | 93,778 | 96,876 | 93,778
Continuing Operations |  |  |  |
Segment Reporting |  |  |  |
Gain on Business Interruption Insurance Recovery |  | 3,495 |  | 3,495
Total revenue | 571,976 | 534,220 | 1,681,268 | 1,548,534
Continuing Operations | Operating Segments | Established |  |  |  |
Segment Reporting |  |  |  |
Gain on Business Interruption Insurance Recovery |  | 0 |  | 0
Total revenue | 427,023 | 417,330 | 1,266,066 | 1,236,208
Continuing Operations | Operating Segments | Other Stabilized |  |  |  |
Segment Reporting |  |  |  |
Gain on Business Interruption Insurance Recovery |  | 0 |  | 0
Total revenue | 66,542 | 52,885 | 195,034 | 137,739
Continuing Operations | Non-allocated |  |  |  |
Segment Reporting |  |  |  |
Gain on Business Interruption Insurance Recovery |  | 0 |  | 0
Total revenue | $ 912 | 993 | $ 2,752 | 3,290
Avalon Maplewood [Member] |  |  |  |
Segment Reporting |  |  |  |
Gain on Business Interruption Insurance Recovery |  | $ 3,495 |  | $ 3,495

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