Number of self-storage facilities direct and indirect interest.

No definition available.

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Namespace Prefix:	psa_
Data Type:	xbrli:integerItemType
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- Definition

Nature Of Business [Line Items]

+ References

No definition available.

+ Details

Name:	psa_NatureOfBusinessLineItems
Namespace Prefix:	psa_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Net rentable area for properties owned.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of countries in which the entity operates as of balance sheet date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of states the entity operates in as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=psa_ShurgardSelfStorageSaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=psa_PSBusinessParksMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	dei_LegalEntityAxis=psa_PublicStorageMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	srt_ProductOrServiceAxis=psa_CommercialAndRetailSpaceMember
Namespace Prefix:
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Description of the Business (Narrative) (Details) ft² in Thousands	Dec. 31, 2022 ft² country storage_facility state	Jul. 20, 2022	Dec. 31, 2021	Dec. 31, 2020
Nature Of Business [Line Items]
Net rentable area (in square feet)	204,217
Shurgard
Nature Of Business [Line Items]
PSA number of self-storage facilities \| storage_facility	266
Net rentable area (in square feet)	15,000
Ownership interest (percentage)	35.00%		35.00%	35.00%
Number of countries in which entity operates \| country	7
PSB
Nature Of Business [Line Items]
Ownership interest (percentage)		41.00%
Public Storage
Nature Of Business [Line Items]
PSA number of self-storage facilities \| storage_facility	2,869
Net rentable area (in square feet)	204,200
Number of states with facilities \| state	40
Public Storage \| Commercial and Retail Space
Nature Of Business [Line Items]
Net rentable area (in square feet)	1,200