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Related Party Transactions (Details) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Aug. 31, 2015 USD ($) unit | Jun. 30, 2015 USD ($) apartment | Mar. 31, 2015 USD ($) | Jul. 31, 2014 USD ($) unit | Jan. 31, 2013 USD ($) | Dec. 31, 2016 USD ($) apartment | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2010 USD ($) | Nov. 30, 2016 USD ($)
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Management and other fees from affiliates |  |  |  |  |  | $ 12,400,000 | $ 15,600,000 | $ 16,500,000 |  |
Revenues from development and redevelopment fees |  |  |  |  |  | 4,200,000 | 6,700,000 | 7,200,000 |  |
Notes and other receivables |  |  |  |  |  | 40,970,000 | 19,285,000 |  |  |
Payments to acquire equity method investments |  |  | $ 1,300,000 |  |  | $ 183,989,000 | 127,879,000 | 246,006,000 |  |
Apartment units owned | apartment |  |  |  |  |  | 59,645 |  |  |  |
Cash consideration for BRE merger |  |  |  |  |  | $ 0 | 0 | 555,826,000 |  |
Gain on disposal of equity method investment | $ 1,500,000 |  |  |  |  | 13,046,000 | 0 | 6,558,000 |  |
Related party transaction, amount of transaction |  |  |  |  |  |  |  |  | $ 4,000,000 |
Limited partnership interest in partnership investments |  |  |  |  |  |  |  |  | 3.00% |
Notes And Other Receivables From Affiliates [Member] |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Notes and other receivables |  |  |  |  |  | 4,700,000 | 3,100,000 |  |  |
Related party note receivable, secured, bearing interest at 9.5%, due October 2019 [Member] |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Notes and other receivables |  |  |  |  |  | 6,593,000 | 0 |  |  |
Anaheim, CA Multifamily Property [Member] |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Equity method investments |  |  | 13,700,000 |  |  |  |  |  |  |
Proceeds from dispositions of co-investments |  |  | $ 13,700,000 |  |  |  |  |  |  |
Cumulative dividend rate (in hundredths) |  |  | 9.00% |  |  |  |  |  |  |
Marcus and Millichamp Company TMMC Affiliate [Member] |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Preferred equity interest investment in a related party entity |  |  |  |  | $ 8,600,000 |  |  |  |  |
Gain on disposal of equity method investment |  |  | $ 500,000 |  |  |  |  |  |  |
Marcus and Millichamp Company TMMC Affiliate [Member] | Related party note receivable, secured, bearing interest at 9.5%, due October 2019 [Member] |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Notes and other receivables |  |  |  |  |  |  |  |  |  | $ 6,600,000
Marcus and Millichamp Company TMMC Affiliate [Member] | Disposition Of Multi-family Properties [Member] |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Payments for brokerage fees |  |  |  |  |  | $ 1,100,000 |  |  |  |
MMI [Member] |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Payments for brokerage fees |  |  |  |  |  |  | $ 0 | $ 0 |  |
Limited Liability Company [Member] | Greentree Apartments [Member] |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Payments to acquire equity method investments |  | $ 10,000,000 |  |  |  |  |  |  |  |
Cumulative dividend rate (in hundredths) |  | 9.50% |  |  |  |  |  |  |  |
Apartment units owned | apartment |  | 220 |  |  |  |  |  |  |  |
Limited Liability Company [Member] | Sterling Cove [Member] |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Payments to acquire equity method investments |  | $ 5,000,000 |  |  |  |  |  |  |  |
Cumulative dividend rate (in hundredths) |  | 9.50% |  |  |  |  |  |  |  |
Apartment units owned | apartment |  | 218 |  |  |  |  |  |  |  |
Limited Liability Company [Member] | Alta Vista Apartments [Member] |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Payments to acquire equity method investments | $ 5,000,000 |  |  |  |  |  |  |  |  |
Cumulative dividend rate (in hundredths) | 9.50% |  |  |  |  |  |  |  |  |
Number of units in real estate property | unit | 92 |  |  |  |  |  |  |  |  |
Paragon Apartments [Member] |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Number of properties contributed | unit |  |  |  | 301 |  |  |  |  |  |
Cash consideration for BRE merger |  |  |  | $ 111,000,000 |  |  |  |  |  |

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