Share-Based Compensation (Schedule of Share-Based Compensation Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Share-based Payment Arrangement, Expensed, Amount [Line Items]
Share-based compensation expense	$ 12,790	$ 10,621	$ 24,678	$ 20,904
Income Statement Location [Axis]: us-gaap:DirectCostsOfLeasedAndRentedPropertyOrEquipment
Share-based Payment Arrangement, Expensed, Amount [Line Items]
Share-based compensation expense	3,130	2,965	6,099	6,096
Income Statement Location [Axis]: us-gaap:GeneralAndAdministrativeExpense
Share-based Payment Arrangement, Expensed, Amount [Line Items]
Share-based compensation expense	9,020	7,059	17,504	13,022
Income Statement Location [Axis]: us-gaap:OtherCostOfOperatingRevenue
Share-based Payment Arrangement, Expensed, Amount [Line Items]
Share-based compensation expense	380	338	731	673
Income Statement Location [Axis]: psa:RealEstateAcquisitionAndDevelopmentExpense
Share-based Payment Arrangement, Expensed, Amount [Line Items]
Share-based compensation expense	$ 260	$ 259	$ 344	$ 1,113