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Segment Reporting (Details 3) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Segment Reporting |  |
Total revenue | $ 560,792 | $ 522,326
NOI | $ 386,453 | $ 355,869
% NOI change from prior year | 8.60% | 3.40%
Gross real estate | $ 22,108,756 | $ 20,919,484
Gross real estate assets held for sale | 153,151 |
Operating Segments | Established |  |
Segment Reporting |  |
Total revenue | 417,544 | 382,757
NOI | $ 295,357 | $ 272,020
% NOI change from prior year | 1.20% | 3.10%
Gross real estate | $ 14,515,336 | $ 13,393,588
Operating Segments | Established | New England |  |
Segment Reporting |  |
Total revenue | 57,909 | 56,154
NOI | $ 37,643 | $ 36,180
% NOI change from prior year | 1.80% | 1.00%
Gross real estate | $ 1,973,203 | $ 1,875,024
Operating Segments | Established | Metro NY/NJ |  |
Segment Reporting |  |
Total revenue | 104,096 | 85,760
NOI | $ 71,921 | $ 58,938
% NOI change from prior year | 0.90% | 2.90%
Gross real estate | $ 3,722,387 | $ 2,903,317
Operating Segments | Established | Mid-Atlantic |  |
Segment Reporting |  |
Total revenue | 59,159 | 55,755
NOI | $ 41,067 | $ 39,147
% NOI change from prior year | 0.20% | 3.70%
Gross real estate | $ 2,233,711 | $ 2,062,311
Operating Segments | Established | Pacific Northwest |  |
Segment Reporting |  |
Total revenue | 21,242 | 20,454
NOI | $ 14,838 | $ 14,815
% NOI change from prior year | (0.60%) | 5.20%
Gross real estate | $ 725,487 | $ 731,537
Operating Segments | Established | Northern California |  |
Segment Reporting |  |
Total revenue | 92,197 | 83,323
NOI | $ 70,494 | $ 63,717
% NOI change from prior year | 1.80% | 2.00%
Gross real estate | $ 3,017,863 | $ 2,815,589
Operating Segments | Established | Southern California |  |
Segment Reporting |  |
Total revenue | 82,941 | 81,311
NOI | $ 59,394 | $ 59,223
% NOI change from prior year | 1.90% | 5.00%
Gross real estate | $ 2,842,685 | $ 3,005,810
Operating Segments | Other Stabilized |  |
Segment Reporting |  |
Total revenue | 71,203 | 70,116
NOI | 47,265 | 48,943
Gross real estate | 3,036,815 | 3,032,689
Operating Segments | Development / Redevelopment |  |
Segment Reporting |  |
Total revenue | 67,934 | 55,547
NOI | 43,831 | 34,906
Gross real estate | 4,321,466 | 4,276,266
Land Held for Future Development |  |
Segment Reporting |  |
Gross real estate | 136,771 | 103,954
Non-allocated |  |
Segment Reporting |  |
Total revenue | 886 | 1,200
Gross real estate | 98,368 | 112,987
Continuing Operations |  |
Segment Reporting |  |
Total revenue | 557,567 | 509,620
Continuing Operations | Operating Segments | Established |  |
Segment Reporting |  |
Total revenue | 417,544 | 382,757
Continuing Operations | Operating Segments | Other Stabilized |  |
Segment Reporting |  |
Total revenue | 71,203 | 70,116
Continuing Operations | Non-allocated |  |
Segment Reporting |  |
Total revenue | $ 886 | $ 1,200

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