Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2019	Feb. 21, 2020	Jun. 30, 2019
Document Type	10-K
Document Annual Report	true
Current Fiscal Year End Date	--12-31
Document Period End Date	Dec. 31, 2019
Document Fiscal Year Focus	2019
Document Transition Report	false
Entity File Number	001-33519
Entity Registrant Name	PUBLIC STORAGE
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	95-3551121
Entity Address, Address Line One	701 Western Avenue
Entity Address, City or Town	Glendale
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	91201-2349
City Area Code	818
Local Phone Number	244-8080
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 35,489,494,000
Entity Common Stock, Shares Outstanding		174,758,632
Documents Incorporated by Reference	Portions of the definitive proxy statement to be filed in connection with the Annual Meeting of Shareholders to be held in 2020 are incorporated by reference into Part III of this Annual Report on Form 10-K to the extent described therein.
Amendment Flag	false
Document Fiscal Period Focus	FY
Entity Central Index Key	0001393311
Common Shares [Member]
Title of 12(b) Security	Common Shares, $0.10 par value
Trading Symbol	PSA
Security Exchange Name	NYSE
Series V Preferred Stock [Member]
Title of 12(b) Security	Depositary Shares Each Representing 1/1,000 of a 5.375% Cum Pref Share, Series V, $0.01 par value
Trading Symbol	PSAPrV
Security Exchange Name	NYSE
Series W Preferred Stock [Member]
Title of 12(b) Security	Depositary Shares Each Representing 1/1,000 of a 5.200% Cum Pref Share, Series W, $0.01 par value
Trading Symbol	PSAPrW
Security Exchange Name	NYSE
Series X Preferred Stock [Member]
Title of 12(b) Security	Depositary Shares Each Representing 1/1,000 of a 5.200% Cum Pref Share, Series X, $0.01 par value
Trading Symbol	PSAPrX
Security Exchange Name	NYSE
Series B Preferred Stock [Member]
Title of 12(b) Security	Depositary Shares Each Representing 1/1,000 of a 5.400% Cum Pref Share, Series B, $0.01 par value
Trading Symbol	PSAPrB
Security Exchange Name	NYSE
Series C Preferred Stock [Member]
Title of 12(b) Security	Depositary Shares Each Representing 1/1,000 of a 5.125% Cum Pref Share, Series C, $0.01 par value
Trading Symbol	PSAPrC
Security Exchange Name	NYSE
Series D Preferred Stock [Member]
Title of 12(b) Security	Depositary Shares Each Representing 1/1,000 of a 4.950% Cum Pref Share, Series D, $0.01 par value
Trading Symbol	PSAPrD
Security Exchange Name	NYSE
Series E Preferred Stock [Member]
Title of 12(b) Security	Depositary Shares Each Representing 1/1,000 of a 4.900% Cum Pref Share, Series E, $0.01 par value
Trading Symbol	PSAPrE
Security Exchange Name	NYSE
Series F Preferred Stock [Member]
Title of 12(b) Security	Depositary Shares Each Representing 1/1,000 of a 5.150% Cum Pref Share, Series F, $0.01 par value
Trading Symbol	PSAPrF
Security Exchange Name	NYSE
Series G Preferred Stock [Member]
Title of 12(b) Security	Depositary Shares Each Representing 1/1,000 of a 5.050% Cum Pref Share, Series G, $0.01 par value
Trading Symbol	PSAPrG
Security Exchange Name	NYSE
Series H Preferred Stock [Member]
Title of 12(b) Security	Depositary Shares Each Representing 1/1,000 of a 5.600% Cum Pref Share, Series H, $0.01 par value
Trading Symbol	PSAPrH
Security Exchange Name	NYSE
Series I Preferred Stock [Member]
Title of 12(b) Security	Depositary Shares Each Representing 1/1,000 of a 4.875% Cum Pref Share, Series I, $0.01 par value
Trading Symbol	PSAPrI
Security Exchange Name	NYSE
Series J Preferred Stock [Member]
Title of 12(b) Security	Depositary Shares Each Representing 1/1,000 of a 4.700% Cum Pref Share, Series J, $0.01 par value
Trading Symbol	PSAPrJ
Security Exchange Name	NYSE
Series K Preferred Stock [Member]
Title of 12(b) Security	Depositary Shares Each Representing 1/1,000 of a 4.750% Cum Pref Share, Series K, $0.01 par value
Trading Symbol	PSAPrK
Security Exchange Name	NYSE
Notes Due 2032 [Member]
Title of 12(b) Security	0.875% Senior Notes due 2032
Trading Symbol	PSA32
Security Exchange Name	NYSE