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Pay vs Performance Disclosure | 12 Months Ended
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Dec. 31, 2022 USD ($) $ / shares | Dec. 31, 2021 USD ($) $ / shares | Dec. 31, 2020 USD ($) $ / shares
Pay vs Performance Disclosure [Table] |  |  |  |  |
Pay vs Performance [Table Text Block] |  | ## Pay Versus Performance Table
|  |  |  |  |  |  | Value of Initial Fixed $100 Investment Based On: |  |
Year | Summary Compensation Table Total for Benjamin W. Schall ($)(1) | Compensation Actually Paid to Benjamin W. Schall ($)(2) | Summary Compensation Table Total for Timothy J. Naughton ($)(3) | Compensation Actually Paid to Timothy J. Naughton ($)(2) | Average Summary Compensation Table Total for Non-PEO NEOs ($) | Average Compensation Actually Paid to Non-PEO NEOs ($)(2) | Total Shareholder Return ($)(4) | Peer Group Total Shareholder Return ($)(5) | Net Income ($ in ‘000) ($)(6) | Core FFO/Share ($)(7)
2022 | 9,393,208 | 3,772,678 | 9,814,142 | (1,308,884) | 4,187,942(8) | 1,457,095(8) | 85 | 94 | 1,136,438 | 9.79
2021 | — | — | 14,371,460 | 26,154,241 | 7,495,804(9) | 10,290,484(9) | 129 | 139 | 1,004,356 | 8.26
2020 | — | — | 11,294,333 | (3,579,035) | 3,530,628(10) | 426,405(10) | 80 | 85 | 827,706 | 8.69
(1) Mr. Schall joined AvalonBay as President and a director in January 2021 and became Chief Executive Officer effective January 3, 2022. Mr. Schall’s compensation for 2021 is included in the non-PEO averages. (2) The amounts reported represent the “compensation actually paid” to each of Mr. Schall and Mr. Naughton and the average “compensation actually paid” to each of the other NEOs as a group, each computed in accordance with Item 402(v) of Regulation S-K, but do not reflect the actual amount of compensation earned by or paid to such NEOs. In accordance with Item 402(v) of Regulation S-K, the following adjustments were made to the amounts reported in the “Total” column of the Summary Compensation Table to calculate “compensation actually paid.”
| Year | Summary Compensation Table Total | Subtract Summary Compensation Table Value of Equity Awards Granted in the Applicable Fiscal Year (Grant Date Fair Value) (i) | For Awards Subtracted in Column (B), Add the Fair Value of Such Awards on December 31 of the Applicable Year(ii) | For Awards Outstanding (Unvested) as of December 31 of the Applicable Year, Add the Change in Fair Value Between December 31 of the Prior Fiscal Year and December 31 of the Applicable Fiscal Year (iii) | For Awards that Vested During the Applicable Year, Add the Change in Fair Value Between December 31 of the Prior Fiscal Year and the Vesting Date (iv) | Add Dividends Paid on Unvested Restricted Stock During the Applicable Fiscal Year | Compensation Actually Paid
| (A) | (B) | (C) | (D) | (E) | (F) | (G)
| 2022 – PEO Schall | 9,393,208 | (6,351,246) | 3,705,283 | (2,786,237) | (342,670) | 154,340 | 3,772,678
| 2022 – PEO Naughton | 9,814,142 | (7,343,192) | 3,696,749 | (6,766,814) | (924,797) | 215,028 | (1,308,884)
| 2022 – Average Non-PEO NEOs | 4,187,942 | (2,524,777) | 1,453,657 | (1,513,615) | (212,401) | 66,289 | 1,457,095
| 2021 – PEO Naughton | 14,371,460 | (10,551,826) | 14,011,349 | 4,604,039 | 3,373,073 | 346,146 | 26,154,241
| 2021 – Average Non-PEO NEOs | 7,495,804 | (5,049,488) | 6,223,603 | 925,342 | 583,792 | 111,431 | 10,290,484
| 2020 – PEO Naughton | 11,294,333 | (8,497,608) | 2,412,393 | (4,958,731) | (4,310,055) | 480,633 | (3,579,035)
| 2020 – Average Non-PEO NEOs | 3,530,628 | (2,149,216) | 798,282 | (1,039,788) | (831,586) | 118,086 | 426,405
i. The amounts reported represent the sum of the amounts reported in the “Stock Awards” and “Option Awards” columns of the Summary Compensation Table for the applicable fiscal year. ii. No awards granted during a fiscal year vested that same year. iii. Represents the sum of the following for each equity award that was outstanding (unvested) as of December 31 of the applicable fiscal year and December 31 of the prior fiscal year: the difference between (x) the fair value of such award as of December 31 of the applicable fiscal year and (y) the fair value of such award as of December 31 of the prior fiscal year. For performance awards, the fair value represents the Monte Carlo valuation for the TSR portion and the payout corresponding to the interim level of achievement of the operating metrics portion. For options, fair value represents the Black-Scholes value. iv. For a multi-year performance award that matured (vested) on December 31 of the reported year, the fair value was the number of units earned valued at the closing price of a share of Common Stock on December 31 of that year, plus the cash amount in respect of accrued dividends to be paid out upon settlement.
(3) Mr. Naughton served as Chief Executive Officer from 2012 through January 2, 2022 and served as Executive Chairman throughout 2022. (4) Cumulative TSR (assuming reinvestment of dividends) for the Company and the peer group, based on an initial purchase price of $100 and is calculated by dividing the sum of the cumulative amount of dividends for the measurement period, assuming dividend reinvestment, and the difference between the Company’s share price at the end and the beginning of the measurement period by the Company’s share price at the beginning of the measurement period. (5) Represents the weighted peer group TSR, weighted according to the respective companies’ stock market capitalization at the beginning of each period. The peer group used for this purpose is the FTSE NAREIT Apartment REIT Index, a published industry index. (6) The dollar amounts reported represent the amount of net income reflected in the Company’s audited financial statements for the applicable fiscal year. (7) The Company Selected Measure is Core FFO per share, representing the Company’s FFO as adjusted for non-core items. By further adjusting for items that are not considered by us to be part of our core business operations, Core FFO can help one compare the core operating and financial performance of the Company between periods. While we consider numerous financial and non-financial performance measures for the purpose of evaluating and determining executive compensation, we consider Core FFO per share, which is one of the measures used to determine annual cash incentive compensation for our NEOs, to be the most important performance measure used to link compensation actually paid to the NEOs for fiscal year 2022 to Company performance. (8) Non-PEO NEOs for 2022 include Messrs. O’Shea Birenbaum, Breslin, and Schulman. (9) Non-PEO NEOs for 2021 include Messrs. O’Shea, Schall, Birenbaum and Breslin. (10) Non-PEO NEOs for 2020 include Messrs. O’Shea, Birenbaum and Breslin and William M. McLaughlin, our former Executive Vice President, Development and Construction. |  |  |
Company Selected Measure Name |  | Core FFO |  |  |
Named Executive Officers, Footnote [Text Block] |  | The amounts reported represent the “compensation actually paid” to each of Mr. Schall and Mr. Naughton and the average “compensation actually paid” to each of the other NEOs as a group, each computed in accordance with Item 402(v) of Regulation S-K, but do not reflect the actual amount of compensation earned by or paid to such NEOs. In accordance with Item 402(v) of Regulation S-K, the following adjustments were made to the amounts reported in the “Total” column of the Summary Compensation Table to calculate “compensation actually paid.” |  |  |
Peer Group Issuers, Footnote [Text Block] |  | Represents the weighted peer group TSR, weighted according to the respective companies’ stock market capitalization at the beginning of each period. The peer group used for this purpose is the FTSE NAREIT Apartment REIT Index, a published industry index. |  |  |
Adjustment To PEO Compensation, Footnote [Text Block] |  |
| Year | Summary Compensation Table Total | Subtract Summary Compensation Table Value of Equity Awards Granted in the Applicable Fiscal Year (Grant Date Fair Value) (i) | For Awards Subtracted in Column (B), Add the Fair Value of Such Awards on December 31 of the Applicable Year(ii) | For Awards Outstanding (Unvested) as of December 31 of the Applicable Year, Add the Change in Fair Value Between December 31 of the Prior Fiscal Year and December 31 of the Applicable Fiscal Year (iii) | For Awards that Vested During the Applicable Year, Add the Change in Fair Value Between December 31 of the Prior Fiscal Year and the Vesting Date (iv) | Add Dividends Paid on Unvested Restricted Stock During the Applicable Fiscal Year | Compensation Actually Paid
| (A) | (B) | (C) | (D) | (E) | (F) | (G)
| 2022 – PEO Schall | 9,393,208 | (6,351,246) | 3,705,283 | (2,786,237) | (342,670) | 154,340 | 3,772,678
| 2022 – PEO Naughton | 9,814,142 | (7,343,192) | 3,696,749 | (6,766,814) | (924,797) | 215,028 | (1,308,884)
| 2022 – Average Non-PEO NEOs | 4,187,942 | (2,524,777) | 1,453,657 | (1,513,615) | (212,401) | 66,289 | 1,457,095
| 2021 – PEO Naughton | 14,371,460 | (10,551,826) | 14,011,349 | 4,604,039 | 3,373,073 | 346,146 | 26,154,241
| 2021 – Average Non-PEO NEOs | 7,495,804 | (5,049,488) | 6,223,603 | 925,342 | 583,792 | 111,431 | 10,290,484
| 2020 – PEO Naughton | 11,294,333 | (8,497,608) | 2,412,393 | (4,958,731) | (4,310,055) | 480,633 | (3,579,035)
| 2020 – Average Non-PEO NEOs | 3,530,628 | (2,149,216) | 798,282 | (1,039,788) | (831,586) | 118,086 | 426,405
i. The amounts reported represent the sum of the amounts reported in the “Stock Awards” and “Option Awards” columns of the Summary Compensation Table for the applicable fiscal year. ii. No awards granted during a fiscal year vested that same year. iii. Represents the sum of the following for each equity award that was outstanding (unvested) as of December 31 of the applicable fiscal year and December 31 of the prior fiscal year: the difference between (x) the fair value of such award as of December 31 of the applicable fiscal year and (y) the fair value of such award as of December 31 of the prior fiscal year. For performance awards, the fair value represents the Monte Carlo valuation for the TSR portion and the payout corresponding to the interim level of achievement of the operating metrics portion. For options, fair value represents the Black-Scholes value. iv. For a multi-year performance award that matured (vested) on December 31 of the reported year, the fair value was the number of units earned valued at the closing price of a share of Common Stock on December 31 of that year, plus the cash amount in respect of accrued dividends to be paid out upon settlement.
Non-PEO NEO Average Total Compensation Amount |  | $ 4,187,942 |  | $ 7,495,804 | $ 3,530,628
Non-PEO NEO Average Compensation Actually Paid Amount |  | $ 1,457,095 |  | 10,290,484 | 426,405
Adjustment to Non-PEO NEO Compensation Footnote [Text Block] |  |
| Year | Summary Compensation Table Total | Subtract Summary Compensation Table Value of Equity Awards Granted in the Applicable Fiscal Year (Grant Date Fair Value) (i) | For Awards Subtracted in Column (B), Add the Fair Value of Such Awards on December 31 of the Applicable Year(ii) | For Awards Outstanding (Unvested) as of December 31 of the Applicable Year, Add the Change in Fair Value Between December 31 of the Prior Fiscal Year and December 31 of the Applicable Fiscal Year (iii) | For Awards that Vested During the Applicable Year, Add the Change in Fair Value Between December 31 of the Prior Fiscal Year and the Vesting Date (iv) | Add Dividends Paid on Unvested Restricted Stock During the Applicable Fiscal Year | Compensation Actually Paid
| (A) | (B) | (C) | (D) | (E) | (F) | (G)
| 2022 – PEO Schall | 9,393,208 | (6,351,246) | 3,705,283 | (2,786,237) | (342,670) | 154,340 | 3,772,678
| 2022 – PEO Naughton | 9,814,142 | (7,343,192) | 3,696,749 | (6,766,814) | (924,797) | 215,028 | (1,308,884)
| 2022 – Average Non-PEO NEOs | 4,187,942 | (2,524,777) | 1,453,657 | (1,513,615) | (212,401) | 66,289 | 1,457,095
| 2021 – PEO Naughton | 14,371,460 | (10,551,826) | 14,011,349 | 4,604,039 | 3,373,073 | 346,146 | 26,154,241
| 2021 – Average Non-PEO NEOs | 7,495,804 | (5,049,488) | 6,223,603 | 925,342 | 583,792 | 111,431 | 10,290,484
| 2020 – PEO Naughton | 11,294,333 | (8,497,608) | 2,412,393 | (4,958,731) | (4,310,055) | 480,633 | (3,579,035)
| 2020 – Average Non-PEO NEOs | 3,530,628 | (2,149,216) | 798,282 | (1,039,788) | (831,586) | 118,086 | 426,405
i. The amounts reported represent the sum of the amounts reported in the “Stock Awards” and “Option Awards” columns of the Summary Compensation Table for the applicable fiscal year. ii. No awards granted during a fiscal year vested that same year. iii. Represents the sum of the following for each equity award that was outstanding (unvested) as of December 31 of the applicable fiscal year and December 31 of the prior fiscal year: the difference between (x) the fair value of such award as of December 31 of the applicable fiscal year and (y) the fair value of such award as of December 31 of the prior fiscal year. For performance awards, the fair value represents the Monte Carlo valuation for the TSR portion and the payout corresponding to the interim level of achievement of the operating metrics portion. For options, fair value represents the Black-Scholes value. iv. For a multi-year performance award that matured (vested) on December 31 of the reported year, the fair value was the number of units earned valued at the closing price of a share of Common Stock on December 31 of that year, plus the cash amount in respect of accrued dividends to be paid out upon settlement.
Compensation Actually Paid vs. Total Shareholder Return [Text Block] |  |  |  |  |
Compensation Actually Paid vs. Net Income [Text Block] |  |  |  |  |
Compensation Actually Paid vs. Company Selected Measure [Text Block] |  |  |  |  |
Tabular List [Table Text Block] |  | ##### Tabular List of Performance Measures The following table includes financial performance measures that the Company determined are its most important financial measures for 2022 and they are reflected in our multi-year performance awards or annual bonus program. Financial Measure Total Shareholder Return Core FFO per Share Three-year Compounded Annual Growth Rate of Core FFO per Share Relative to Apartment REIT Companies Same Store Revenue Development Yield |  |  |
Total Shareholder Return Amount |  | $ 85 |  | 129 | 80
Peer Group Total Shareholder Return Amount |  | 94 |  | 139 | 85
Net Income (Loss) |  | $ 1,136,438,000 |  | $ 1,004,356,000 | $ 827,706,000
Company Selected Measure Amount | $ / shares |  | 9.79 |  | 8.26 | 8.69
Measure [Axis]: 1 |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
Measure Name |  | Total Shareholder Return |  |  |
Measure [Axis]: 2 |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
Measure Name |  | Core FFO per Share |  |  |
Measure [Axis]: 3 |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
Measure Name |  | Three-year Compounded Annual Growth Rate of Core FFO per Share Relative to Apartment REIT Companies |  |  |
Measure [Axis]: 4 |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
Measure Name |  | Same Store Revenue |  |  |
Measure [Axis]: 5 |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
Measure Name |  | Development Yield |  |  |
Non-PEO NEO [Member] | Subtract Summary Compensation Table Value of Equity Awards Granted in the Applicable Fiscal Year (Grant Date Fair Value) |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
Adjustment to Compensation Amount | [1] | $ (2,524,777) |  | $ (5,049,488) | $ (2,149,216)
Non-PEO NEO [Member] | For Awards Subtracted in Column (B), Add the Fair Value of Such Awards on December 31 of the Applicable Year |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
Adjustment to Compensation Amount | [2] | 1,453,657 |  | 6,223,603 | 798,282
Non-PEO NEO [Member] | For Awards Outstanding (Unvested) as of December 31 of the Applicable Year, Add the Change in Fair Value Between December 31 of the Prior Fiscal Year and December 31 of the Applicable Fiscal Year |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
Adjustment to Compensation Amount | [3] | (1,513,615) |  | 925,342 | (1,039,788)
Non-PEO NEO [Member] | For Awards that Vested During the Applicable Year, Add the Change in Fair Value Between December 31 of the Prior Fiscal Year and the Vesting Date |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
Adjustment to Compensation Amount | [4] | (212,401) |  | 583,792 | (831,586)
Non-PEO NEO [Member] | Add Dividends Paidon Unvested Restricted Stock During the Applicable Fiscal Year |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
Adjustment to Compensation Amount |  | 66,289 |  | 111,431 | 118,086
Benjamin W Schall |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
PEO Total Compensation Amount | [5] | 9,393,208 |  |  |
PEO Actually Paid Compensation Amount |  | $ 3,772,678 | [5] |  |
PEO Name |  | Mr. Schall |  |  |
Benjamin W Schall | PEO [Member] | Subtract Summary Compensation Table Value of Equity Awards Granted in the Applicable Fiscal Year (Grant Date Fair Value) |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
Adjustment to Compensation Amount | [1] | $ (6,351,246) |  |  |
Benjamin W Schall | PEO [Member] | For Awards Subtracted in Column (B), Add the Fair Value of Such Awards on December 31 of the Applicable Year |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
Adjustment to Compensation Amount | [2] | 3,705,283 |  |  |
Benjamin W Schall | PEO [Member] | For Awards Outstanding (Unvested) as of December 31 of the Applicable Year, Add the Change in Fair Value Between December 31 of the Prior Fiscal Year and December 31 of the Applicable Fiscal Year |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
Adjustment to Compensation Amount | [3] | (2,786,237) |  |  |
Benjamin W Schall | PEO [Member] | For Awards that Vested During the Applicable Year, Add the Change in Fair Value Between December 31 of the Prior Fiscal Year and the Vesting Date |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
Adjustment to Compensation Amount | [4] | (342,670) |  |  |
Benjamin W Schall | PEO [Member] | Add Dividends Paidon Unvested Restricted Stock During the Applicable Fiscal Year |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
Adjustment to Compensation Amount |  | 154,340 |  |  |
Timothy J Naughton |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
PEO Total Compensation Amount |  | 9,814,142 |  | 14,371,460 | 11,294,333
PEO Actually Paid Compensation Amount |  | $ (1,308,884) |  | $ 26,154,241 | $ (3,579,035)
PEO Name |  | Mr. Naughton |  | Mr. Naughton | Mr. Naughton
Timothy J Naughton | PEO [Member] | Subtract Summary Compensation Table Value of Equity Awards Granted in the Applicable Fiscal Year (Grant Date Fair Value) |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
Adjustment to Compensation Amount | [1] | $ (7,343,192) |  | $ (10,551,826) | $ (8,497,608)
Timothy J Naughton | PEO [Member] | For Awards Subtracted in Column (B), Add the Fair Value of Such Awards on December 31 of the Applicable Year |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
Adjustment to Compensation Amount | [2] | 3,696,749 |  | 14,011,349 | 2,412,393
Timothy J Naughton | PEO [Member] | For Awards Outstanding (Unvested) as of December 31 of the Applicable Year, Add the Change in Fair Value Between December 31 of the Prior Fiscal Year and December 31 of the Applicable Fiscal Year |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
Adjustment to Compensation Amount | [3] | (6,766,814) |  | 4,604,039 | (4,958,731)
Timothy J Naughton | PEO [Member] | For Awards that Vested During the Applicable Year, Add the Change in Fair Value Between December 31 of the Prior Fiscal Year and the Vesting Date |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
Adjustment to Compensation Amount | [4] | (924,797) |  | 3,373,073 | (4,310,055)
Timothy J Naughton | PEO [Member] | Add Dividends Paidon Unvested Restricted Stock During the Applicable Fiscal Year |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
Adjustment to Compensation Amount |  | $ 215,028 |  | $ 346,146 | $ 480,633
Messrs O Shea | Non-PEO NEO [Member] |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
PEO Name |  | Messrs. O’Shea |  | Messrs. O’Shea | Messrs. O’Shea
Birenbaum | Non-PEO NEO [Member] |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
PEO Name |  | Birenbaum |  | Birenbaum | Birenbaum
Breslin | Non-PEO NEO [Member] |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
PEO Name |  | Breslin |  | Breslin | Breslin
Schulman | Non-PEO NEO [Member] |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
PEO Name |  | Schulman |  |  |
Schall | Non-PEO NEO [Member] |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
PEO Name |  |  |  | Schall |
William M McLaughlin | Non-PEO NEO [Member] |  |  |  |  |
Pay vs Performance Disclosure [Table] |  |  |  |  |
PEO Name |  |  |  |  | William M. McLaughlin
[1] | The amounts reported represent the sum of the amounts reported in the “Stock Awards” and “Option Awards” columns of the Summary Compensation Table for the applicable fiscal year.
[2] | No awards granted during a fiscal year vested that same year.
[3] | Represents the sum of the following for each equity award that was outstanding (unvested) as of December 31 of the applicable fiscal year and December 31 of the prior fiscal year: the difference between (x) the fair value of such award as of December 31 of the applicable fiscal year and (y) the fair value of such award as of December 31 of the prior fiscal year. For performance awards, the fair value represents the Monte Carlo valuation for the TSR portion and the payout corresponding to the interim level of achievement of the operating metrics portion. For options, fair value represents the Black-Scholes value.
[4] | For a multi-year performance award that matured (vested) on December 31 of the reported year, the fair value was the number of units earned valued at the closing price of a share of Common Stock on December 31 of that year, plus the cash amount in respect of accrued dividends to be paid out upon settlement.
[5] | Mr. Schall joined AvalonBay as President and a director in January 2021 and became Chief Executive Officer effective January 3, 2022. Mr. Schall’s compensation for 2021 is included in the non-PEO averages.

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