Quarterly report pursuant to Section 13 or 15(d)

Organization And Description Of Business (Narrative) (Details)

v3.21.1
Organization And Description Of Business (Narrative) (Details)
shares in Millions, ft² in Millions
 3 Months Ended
Mar. 31, 2021
ft²
item
property
state
shares
Organization And Description Of Business [Line Items]  
The Company's ownership percentage of the limited partnership 79.00%
Rentable area (in square feet) | ft² 27.8
Number of states with rentable commercial space | state 6
Number of parks | item 98
Number of buildings | item 676
Managed Properties [Member]  
Organization And Description Of Business [Line Items]  
Rentable area (in square feet) | ft² 0.4
Highgate at the Mile [Member]  
Organization And Description Of Business [Line Items]  
Number of units to be developed | property 395
Brentford at The Mile [Member]  
Organization And Description Of Business [Line Items]  
Number of units to be developed | property 411
JV Partner [Member] | Highgate at the Mile [Member]  
Organization And Description Of Business [Line Items]  
Economic interest in joint venture, percentage 5.00%
JV Partner [Member] | Brentford at The Mile [Member]  
Organization And Description Of Business [Line Items]  
Economic interest in joint venture, percentage 1.80%
PS [Member]  
Organization And Description Of Business [Line Items]  
Shares owned by Public Storage | shares 7.2
Affiliate's percent ownership of the Company's common equity 41.50%
Aggregate shares owned if partnership units are redeemed | shares 14.5
Investment in Joint Venture [Member] | Highgate at the Mile [Member]  
Organization And Description Of Business [Line Items]  
Economic interest in joint venture, percentage 95.00%
Investment in Joint Venture [Member] | Brentford at The Mile [Member]  
Organization And Description Of Business [Line Items]  
Economic interest in joint venture, percentage 98.20%