Name:	psa_AggregateCoverageOfTenantsParticipating
Namespace Prefix:	psa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The aggregate maximum limit of coverage under our general liability insurance policies through third-party insurance carriers.

No definition available.

Name:	psa_AggregateLimitGeneralLiabilityCoverage
Namespace Prefix:	psa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The aggregate maximum limit of coverage under our property insurance policies through third-party insurance carriers.

No definition available.

Name:	psa_AggregateLimitPropertyCoverage
Namespace Prefix:	psa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The aggregate maximum losses under our property insurance policies through third-party insurance carriers.

No definition available.

Name:	psa_AggregateLossThresholdForReducedDeductibleForProperty
Namespace Prefix:	psa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Deductible for general liability insurance

No definition available.

Name:	psa_DeductibleForGeneralLiability
Namespace Prefix:	psa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Deductible for property insurance

No definition available.

Name:	psa_DeductibleForProperty
Namespace Prefix:	psa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The aggregate per occurance limit of coverage under our property insurance policies through third-party insurance carriers.

No definition available.

Name:	psa_MinimumLossPerOccurrenceToReachAggregateLossThresholdForReducedDeductibleForProperty
Namespace Prefix:	psa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Reduced Deductible For Property

No definition available.

Name:	psa_ReducedDeductibleForProperty
Namespace Prefix:	psa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The number of certificate holders held by tenants at our self-storage facilities participating in our tenant insurance program at the end of the reporting period.

No definition available.

Name:	psa_TenantCertificateHoldersParticipatingIndividualInsuranceProgram
Namespace Prefix:	psa_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

The maximum individual limit amount offered under our tenant reinsurance program for goods stored by tenants at our self-storage facilities.

No definition available.

Name:	psa_TenantIndividualInsuranceLimitMaximum
Namespace Prefix:	psa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The minimum amount for which claims paid for individual events must exceed under our third-party insurance coverage.

No definition available.

Name:	psa_ThirdPartyInsuranceCoverageForClaimsPaidExceedingAmountForIndividualEvent
Namespace Prefix:	psa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The maximum amount of claims paid for individual events under our third-party insurance coverage.

No definition available.

Name:	psa_ThirdPartyInsuranceCoverageForClaimsPaidForIndividualEventLimit
Namespace Prefix:	psa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

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

Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

No definition available.

Name:	us-gaap_ContractualObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of contractual obligation to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

No definition available.

Name:	us-gaap_ContractualObligationDueInNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of contractual obligation to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

No definition available.

Name:	us-gaap_ContractualObligationDueInSecondYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of contractual obligation to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

No definition available.

Name:	us-gaap_ContractualObligationDueInThirdYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of lessee's undiscounted obligation for lease payment for operating lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980

Name:	us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of lessee's undiscounted obligation for lease payment for operating lease due after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

Name:	us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

Name:	us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

Name:	us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

Name:	us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

Name:	us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).