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Consolidated Statements of Capital - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |
Net income | $ 599,332 | $ 464,448 | $ 413,599
Reversal of unrealized gains upon the sale of marketable securities | 0 | (32) | 13
Cash flow hedge losses reclassified to earnings | 3,338 | 1,824 | 0
Change in fair value of derivatives and amortization of swap settlements | (4,148) | (2,948) | 7,824
Change in fair value of marketable securities, net | (61) | 281 | (118)
Issuance of common stock under: |  |  |
Sale of common stock by general partner, net | (296) | 72,539 | (919)
Retirement of common stock, net | (269,315) | (56,989) | (51,233)
Changes in the redemption value of redeemable noncontrolling interest | 4,299 | (2,008) | (1,164)
Changes in noncontrolling interest from acquisition | 1,349 | 65,472 | 7,919
Distributions to noncontrolling interest | (31,367) | (28,493) | (29,233)
Redemptions | (3,113) | $ (36,568) | $ (1,333)
ASU 2016-01 |  |  |
Issuance of common stock under: |  |  |
Accounting Standards Update [Extensible List] |  |  | us-gaap:AccountingStandardsUpdate201601Member
ASU 2017-05 |  |  |
Issuance of common stock under: |  |  |
Accounting Standards Update [Extensible List] |  |  | us-gaap:AccountingStandardsUpdate201705Member
ASU 2017-12 |  |  |
Issuance of common stock under: |  |  |
Accounting Standards Update [Extensible List] |  | us-gaap:AccountingStandardsUpdate201712Member |
Essex Portfolio, L.P. |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |
Balances | 6,403,504 | $ 6,393,844 | $ 6,396,825
Net income | 599,332 | 464,448 | 413,599
Reversal of unrealized gains upon the sale of marketable securities | 0 | (32) | 13
Cash flow hedge losses reclassified to earnings | 3,338 | 1,824 | 0
Change in fair value of derivatives and amortization of swap settlements | (4,148) | (2,948) | 7,824
Change in fair value of marketable securities, net | (61) | 281 | (118)
Issuance of common stock under: |  |  |
General partner's stock based compensation, net | 9,201 | 33,779 | 6,213
Sale of common stock by general partner, net | (296) | 72,539 | (919)
Equity based compensation costs | 12,913 | 12,283 | 12,851
Retirement of common stock, net | (269,315) | (56,989) | (51,233)
Cumulative effect upon adoption | 6,403,504 | 6,403,504 | 6,393,844
Changes in the redemption value of redeemable noncontrolling interest | 4,299 | (2,008) | (1,164)
Changes in noncontrolling interest from acquisition | 1,349 | 65,472 | 7,919
Distributions to noncontrolling interest | (12,292) | (10,521) | (12,174)
Redemptions | (3,113) | (36,568) | (1,333)
Distributions declared | (561,329) | (532,081) | (508,167)
Balances | 6,183,192 | 6,403,504 | 6,393,844
Essex Portfolio, L.P. | Cumulative Effect, Period of Adoption, Adjustment | ASU 2017-05 |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |
Balances |  |  | 123,708
Issuance of common stock under: |  |  |
Cumulative effect upon adoption |  |  | 123,708
Essex Portfolio, L.P. | Cumulative Effect, Period of Adoption, Adjustment | ASU 2017-12 |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |
Balances | (190) | 181 |
Issuance of common stock under: |  |  |
Cumulative effect upon adoption | (190) | (190) | 181
Balances |  | (190) | 181
Essex Portfolio, L.P. | Accumulated other comprehensive loss, net |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |
Balances | (10,432) | (9,738) | (15,229)
Reversal of unrealized gains upon the sale of marketable securities |  | (32) | 13
Cash flow hedge losses reclassified to earnings | 3,338 | 1,824 |
Change in fair value of derivatives and amortization of swap settlements | (4,148) | (2,948) | 7,824
Change in fair value of marketable securities, net | (61) | 281 | (118)
Issuance of common stock under: |  |  |
Cumulative effect upon adoption | (11,303) | (10,432) | (9,738)
Balances | (11,303) | (10,432) | (9,738)
Essex Portfolio, L.P. | Accumulated other comprehensive loss, net | Cumulative Effect, Period of Adoption, Adjustment | ASU 2016-01 |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |
Balances |  |  | (2,228)
Issuance of common stock under: |  |  |
Cumulative effect upon adoption |  |  | (2,228)
Essex Portfolio, L.P. | Accumulated other comprehensive loss, net | Cumulative Effect, Period of Adoption, Adjustment | ASU 2017-12 |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |
Balances |  | 181 |
Issuance of common stock under: |  |  |
Cumulative effect upon adoption |  | 181 | 181
Balances |  |  | 181
Essex Portfolio, L.P. | Noncontrolling interest |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |
Balances | 122,262 | 64,231 | 66,410
Net income | 10,550 | 9,819 | 9,994
Issuance of common stock under: |  |  |
Cumulative effect upon adoption | 121,172 | 122,262 | 64,231
Changes in the redemption value of redeemable noncontrolling interest | 121 | 1,310 | 68
Changes in noncontrolling interest from acquisition | 1,349 | 65,472 |
Distributions to noncontrolling interest | (12,292) | (10,521) | (12,174)
Redemptions | (818) | (8,049) | (67)
Balances | 121,172 | 122,262 | 64,231
Essex Portfolio, L.P. | General Partner | Common Equity |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |
Balances | $ 6,234,315 | $ 6,280,290 | $ 6,295,852
Balances (in shares) | 66,092 | 65,890 | 66,054
Net income | $ 568,870 | $ 439,286 | $ 390,153
Issuance of common stock under: |  |  |
General partner's stock based compensation, net | $ 9,201 | $ 33,779 | $ 6,213
General partner's stock based compensation, net (in shares) | 95 | 195 | 41
Sale of common stock by general partner, net | $ (296) | $ 72,539 | $ (919)
Sale of common stock by general partner, net (in shares) |  | 228 |
Equity based compensation costs | 12,453 | $ 11,029 | 11,651
Retirement of common stock, net | $ (269,315) | $ (56,989) | $ (51,233)
Retirement of common stock, net (in shares) | (1,197) | (234) | (210)
Cumulative effect upon adoption | $ 6,015,139 | $ 6,234,315 | $ 6,280,290
Changes in the redemption value of redeemable noncontrolling interest | 4,375 | (3,427) | (1,143)
Redemptions | $ (2,020) | $ (28,083) | $ (1,061)
Redemptions (in shares) | 9 | 13 | 5
Distributions declared | $ (542,254) | $ (514,109) | $ (491,108)
Balances | $ 6,015,139 | $ 6,234,315 | $ 6,280,290
Balances (in shares) | 64,999 | 66,092 | 65,890
Essex Portfolio, L.P. | General Partner | Common Equity | ASU 2016-01 |  |  |
Issuance of common stock under: |  |  |
Accounting Standards Update [Extensible List] |  |  | us-gaap:AccountingStandardsUpdate201601Member
Essex Portfolio, L.P. | General Partner | Common Equity | ASU 2017-05 |  |  |
Issuance of common stock under: |  |  |
Accounting Standards Update [Extensible List] |  |  | us-gaap:AccountingStandardsUpdate201705Member
Essex Portfolio, L.P. | General Partner | Common Equity | ASU 2017-12 |  |  |
Issuance of common stock under: |  |  |
Accounting Standards Update [Extensible List] | us-gaap:AccountingStandardsUpdate201613Member | us-gaap:AccountingStandardsUpdate201712Member |
Essex Portfolio, L.P. | General Partner | Common Equity | Cumulative Effect, Period of Adoption, Adjustment | ASU 2016-01 |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |
Balances |  |  | $ 2,234
Issuance of common stock under: |  |  |
Cumulative effect upon adoption |  |  | 2,234
Essex Portfolio, L.P. | General Partner | Common Equity | Cumulative Effect, Period of Adoption, Adjustment | ASU 2017-05 |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |
Balances |  |  | 119,651
Issuance of common stock under: |  |  |
Cumulative effect upon adoption |  |  | 119,651
Essex Portfolio, L.P. | General Partner | Common Equity | Cumulative Effect, Period of Adoption, Adjustment | ASU 2017-12 |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |
Balances | $ (190) |  |
Issuance of common stock under: |  |  |
Cumulative effect upon adoption | (190) | $ (190) |
Balances |  | (190) |
Essex Portfolio, L.P. | Limited Partner | Common Equity |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |
Balances | $ 57,359 | $ 59,061 | $ 49,792
Balances (in shares) | 2,302 | 2,305 | 2,268
Net income | $ 19,912 | $ 15,343 | $ 13,452
Issuance of common stock under: |  |  |
Equity based compensation costs | $ 460 | $ 1,254 | $ 1,200
Equity based compensation costs (in shares) | 2 | 10 | 11
Cumulative effect upon adoption | $ 58,184 | $ 57,359 | $ 59,061
Changes in the redemption value of redeemable noncontrolling interest | (197) | 109 | (89)
Changes in noncontrolling interest from acquisition |  |  | $ 7,919
Changes in noncontrolling interest from acquisition (in shares) |  |  | 31
Redemptions | $ (275) | $ (436) | $ (205)
Redemptions (in shares) | (9) | (13) | (5)
Distributions declared | $ (19,075) | $ (17,972) | $ (17,059)
Balances | $ 58,184 | $ 57,359 | $ 59,061
Balances (in shares) | 2,295 | 2,302 | 2,305
Essex Portfolio, L.P. | Limited Partner | Common Equity | Cumulative Effect, Period of Adoption, Adjustment | ASU 2016-01 |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |
Balances |  |  | $ (6)
Issuance of common stock under: |  |  |
Cumulative effect upon adoption |  |  | (6)
Essex Portfolio, L.P. | Limited Partner | Common Equity | Cumulative Effect, Period of Adoption, Adjustment | ASU 2017-05 |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |
Balances |  |  | 4,057
Issuance of common stock under: |  |  |
Cumulative effect upon adoption |  |  | $ 4,057

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