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Investments - Details Regarding Acquired Communities (Details) ft² in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) community home ft² | Dec. 31, 2021 USD ($) ft² community home | Dec. 31, 2020 USD ($) ft² home community
Asset Acquisition [Line Items] |  |  |
Number of communities acquired | community | 4 | 7 | 0
Number of apartment homes acquired | home | 1,313 | 1,932 | 0
Payments to acquire other real estate | $ 536,838 | $ 771,692 | $ 0
Commercial square feet | ft² | 16 | 90 | 0
Avalon Flatirons |  |  |
Asset Acquisition [Line Items] |  |  |
Number of communities acquired | community | 1 |  |
Number of apartment homes acquired | home | 207 |  |
Payments to acquire other real estate | $ 95,000 |  |
Commercial square feet | ft² | 16 |  |
Waterford Court |  |  |
Asset Acquisition [Line Items] |  |  |
Number of communities acquired | community | 1 |  |
Number of apartment homes acquired | home | 196 |  |
Payments to acquire other real estate | $ 69,500 |  |
Avalon Miramar Park Place |  |  |
Asset Acquisition [Line Items] |  |  |
Number of communities acquired | community | 1 |  |
Number of apartment homes acquired | home | 650 |  |
Payments to acquire other real estate | $ 295,000 |  |
Avalon Highland Creek |  |  |
Asset Acquisition [Line Items] |  |  |
Number of communities acquired | community | 1 |  |
Number of apartment homes acquired | home | 260 |  |
Payments to acquire other real estate | $ 76,700 |  |
2022 Acquisition |  |  |
Asset Acquisition [Line Items] |  |  |
Payments to acquire other real estate | $ 536,200 |  |
2021 Acquisition |  |  |
Asset Acquisition [Line Items] |  |  |
Payments to acquire other real estate |  | $ 724,500 |
2020 Acquisition |  |  |
Asset Acquisition [Line Items] |  |  |
Payments to acquire other real estate |  |  | $ 0

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The cash outflow associated with the purchase of other real estate investments held by the entity for investment purposes not otherwise defined in the taxonomy. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585 + Details
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