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Noncontrolling Interests (Details) - Noncontrolling Interests	Sep. 30, 2023 shares
Noncontrolling Interest [Line Items]
Convertible partnership units (in shares)	499,966
Partnership units conversion ratio	1

X

- Definition

Convertible Partnership Units.

+ References

No definition available.

+ Details

Name:	psa_ConvertiblePartnershipUnits
Namespace Prefix:	psa_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Partnership Units Conversion Ratio to Common Shares

+ References

No definition available.

+ Details

Name:	psa_PartnershipUnitsConversionRatio
Namespace Prefix:	psa_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

X

- 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

Name:	us-gaap_MinorityInterestLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_StatementEquityComponentsAxis=us-gaap_NoncontrollingInterestMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: