Segment Information (Narrative) (Details) (Domestic Self-Storage [Member])	Dec. 31, 2014 item
Domestic Self-Storage [Member]
Segment Reporting Information [Line Items]
Number of self-storage facilities owned by the Company	2,238

The number of domestic self-storage facilities owned by Public Storage and it's subsidiaries.

No definition available.

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