Number Of Individuals Owning Remaining Equity

No definition available.

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Namespace Prefix:	psa_
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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
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Period Type:	instant

- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

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

- Definition

Amount of transactions with related party during the financial reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864

+ Details

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Balance Type:	debit
Period Type:	duration

- 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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- Details

Name:	srt_StatementGeographicalAxis=country_CA
Namespace Prefix:
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- Details

Name:	srt_OwnershipAxis=psa_HughesOwnedCanadianFacilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=psa_TamaraHughesGustavsonMember
Namespace Prefix:
Data Type:	na
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Related Party Transactions (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) adult_children storage_facility	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Related Party Transaction [Line Items]
Tenants reinsurance premiums earned by subsidiaries \| $	$ 2.2	$ 2.1	$ 1.6
Canada \| Hughes Owned Canadian Facilities
Related Party Transaction [Line Items]
Number of self-storage facilities \| storage_facility	65
Number of Ms. Gustavson's adult children owning remaining equity in LLC \| adult_children	2
Ownership interest by parent	0.00%
Canada \| Hughes Owned Canadian Facilities \| Tamara Hughes Gustavson
Related Party Transaction [Line Items]
Ownership interest of noncontrolling owners (less than)	0.10%