Public Storage (PSA) 10-K 27 Feb 19 2018 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Feb. 25, 2019	Jun. 30, 2018
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	FY
Entity Registrant Name	Public Storage
Entity Central Index Key	1,393,311
Current Fiscal Year End Date	--12-31
Trading Symbol	psa
Entity Filer Category	Large Accelerated Filer
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 33,830,475,000
Entity Common Stock, Shares Outstanding		174,498,758

Balance Sheets

Balance Sheets - USD ($)	Dec. 31, 2018	Dec. 31, 2017
ASSETS
Cash and equivalents	$ 361,218,000	$ 433,376,000
Real estate facilities, at cost:
Land	4,047,982,000	3,947,123,000
Buildings	11,248,862,000	10,718,866,000
Real estate facilities, gross	15,296,844,000	14,665,989,000
Accumulated depreciation	(6,140,072,000)	(5,700,331,000)
Real estate facilities, net	9,156,772,000	8,965,658,000
Construction in process	285,339,000	264,441,000
Total real estate facilities	9,442,111,000	9,230,099,000
Investments in unconsolidated real estate entities	783,988,000	724,173,000
Goodwill and other intangible assets, net	209,856,000	214,957,000
Other Assets	131,097,000	130,287,000
Total assets	10,928,270,000	10,732,892,000
LIABILITIES AND EQUITY
Notes payable	1,412,283,000	1,431,322,000
Accrued and other liabilities	371,259,000	337,201,000
Total liabilities	1,783,542,000	1,768,523,000
Commitments and contingencies (Note 13)
Public Storage shareholders' equity:
Preferred Shares, $0.01 par value, 100,000,000 shares authorized, 161,000 shares issued (in series) and outstanding, (161,000 at December 31, 2017), at liquidation preference	4,025,000,000	4,025,000,000
Common Shares, $0.10 par value, 650,000,000 shares authorized, 174,130,881 shares issued and outstanding (173,853,370 shares at December 31, 2017)	17,413,000	17,385,000
Paid-in capital	5,718,485,000	5,648,399,000
Accumulated deficit	(577,360,000)	(675,711,000)
Accumulated other comprehensive loss	(64,060,000)	(75,064,000)
Total Public Storage shareholders’ equity	9,119,478,000	8,940,009,000
Noncontrolling interests	25,250,000	24,360,000
Total equity	9,144,728,000	8,964,369,000
Total liabilities and equity	$ 10,928,270,000	$ 10,732,892,000

Balance Sheets (Parenthetical)

Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2018	Dec. 31, 2017
Balance Sheets [Abstract]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, shares issued	161,000	161,000
Preferred stock, shares outstanding	161,000	161,000
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	650,000,000	650,000,000
Common stock, shares issued	174,130,881	173,853,370
Common stock, shares outstanding	174,130,881	173,853,370

Statements Of Income

Statements Of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues:
Total revenues	$ 2,754,280	$ 2,668,528	$ 2,560,549
Expenses:
Self-storage cost of operations	695,731	657,633	617,905
Ancillary cost of operations	43,991	50,345	51,178
Depreciation and amortization	483,646	454,526	433,314
General and administrative	118,720	82,882	83,656
Interest expense	32,542	12,690	4,210
Operating expenses	1,374,630	1,258,076	1,190,263
Other increase (decrease) to net income:
Interest and other income	26,442	18,771	15,138
Equity in earnings of unconsolidated real estate entities	103,495	75,655	56,756
Foreign currency exchange gain (loss)	18,117	(50,045)	17,570
Casualty loss		(7,789)
Gain on sale of real estate	37,903	1,421	689
Gain due to Shurgard Europe public offering	151,616
Net income	1,717,223	1,448,465	1,460,439
Allocation to noncontrolling interests	(6,192)	(6,248)	(6,863)
Net income allocable to Public Storage shareholders	1,711,031	1,442,217	1,453,576
Allocation of net income to:
Preferred shareholders- distributions	(216,316)	(236,535)	(238,214)
Preferred shareholders - redemptions (Note 8)		(29,330)	(26,873)
Restricted share units	(5,815)	(4,743)	(4,610)
Net income allocable to common shareholders	$ 1,488,900	$ 1,171,609	$ 1,183,879
Net income per common share:
Basic	$ 8.56	$ 6.75	$ 6.84
Diluted	$ 8.54	$ 6.73	$ 6.81
Basic weighted average common shares outstanding	173,969	173,613	173,091
Diluted weighted average common shares outstanding	174,297	174,151	173,878
Self-Storage Facilities [Member]
Revenues:
Total revenues	$ 2,597,607	$ 2,512,433	$ 2,405,828
Ancillary Operations [Member]
Revenues:
Total revenues	$ 156,673	$ 156,095	$ 154,721

Statements Of Comprehensive Inc

Statements Of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statements Of Comprehensive Income [Abstract]
Net income	$ 1,717,223	$ 1,448,465	$ 1,460,439
Other comprehensive income (loss):
Aggregate foreign currency exchange gain (loss)	1,914	(30,003)	(8,047)
Adjust for aggregate foreign currency exchange gain in equity in earnings of unconsolidated real estate entities			(941)
Adjust for foreign currency exchange loss reflected in gain on sale of real estate and gain on Shurgard Europe public offering	27,207
Adjust for aggregate foreign currency exchange (gain) loss included in net income	(18,117)	50,045	(17,570)
Other comprehensive income (loss)	11,004	20,042	(26,558)
Total comprehensive income	1,728,227	1,468,507	1,433,881
Allocation to noncontrolling interests	(6,192)	(6,248)	(6,863)
Comprehensive income allocable to Public Storage shareholders	$ 1,722,035	$ 1,462,259	$ 1,427,018

Statements Of Equity

Statements Of Equity - USD ($) $ in Thousands	Cumulative Preferred Shares [Member]	Common Shares [Member]	Paid-In Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Total Public Storage Shareholders' Equity [Member]	Noncontrolling Interests [Member]	Total
Balances at Dec. 31, 2015	$ 4,055,000	$ 17,293	$ 5,601,506	$ (434,610)	$ (68,548)	$ 9,170,641	$ 26,997	$ 9,197,638
Cumulative effect of a change in accounting principle (Note 10) at Dec. 31, 2015			789	(789)				789
Balances, as adjusted at Dec. 31, 2015	4,055,000	17,293	5,602,295	(435,399)	(68,548)	9,170,641	26,997	9,197,638
Issuance of preferred shares (Note 8)	1,175,000		(38,797)			1,136,203		1,136,203
Redemption of preferred shares (Note 8)	(862,500)					(862,500)		(862,500)
Issuance of common shares in connection with share-based compensation (Note 10)		36	25,505			25,541		25,541
Share-based compensation expense, net of cash paid in lieu of common shares (Note 10)			20,765			20,765		20,765
Contributions by noncontrolling interests							3,470	3,470
Net income				1,460,439		1,460,439		1,460,439
Net income allocated to noncontrolling interests				(6,863)		(6,863)	6,863	(6,863)
Distributions to equity holders:
Preferred shares (Note 8)				(238,214)		(238,214)		(238,214)
Noncontrolling interests							(7,586)	(7,586)
Common shares and restricted share units				(1,267,544)		(1,267,544)		(1,267,544)
Other comprehensive income (loss) (Note 2)					(26,558)	(26,558)		(26,558)
Balances at Dec. 31, 2016	4,367,500	17,329	5,609,768	(487,581)	(95,106)	9,411,910	29,744	9,441,654
Issuance of preferred shares (Note 8)	580,000		(18,823)			561,177		561,177
Redemption of preferred shares (Note 8)	(922,500)					(922,500)		(922,500)
Issuance of common shares in connection with share-based compensation (Note 10)		56	42,444			42,500		42,500
Share-based compensation expense, net of cash paid in lieu of common shares (Note 10)			22,711			22,711		22,711
Acquisition of noncontrolling interests			(7,701)			(7,701)	(6,724)	(14,425)
Contributions by noncontrolling interests							2,484	2,484
Net income				1,448,465		1,448,465		1,448,465
Net income allocated to noncontrolling interests				(6,248)		(6,248)	6,248	(6,248)
Distributions to equity holders:
Preferred shares (Note 8)				(236,535)		(236,535)		(236,535)
Noncontrolling interests							(7,392)	(7,392)
Common shares and restricted share units				(1,393,812)		(1,393,812)		(1,393,812)
Other comprehensive income (loss) (Note 2)					20,042	20,042		20,042
Balances at Dec. 31, 2017	4,025,000	17,385	5,648,399	(675,711)	(75,064)	8,940,009	24,360	8,964,369
Issuance of common shares in connection with share-based compensation (Note 10)		28	12,497			12,525		12,525
Share-based compensation expense, net of cash paid in lieu of common shares (Note 10)			57,589			57,589		57,589
Contributions by noncontrolling interests							1,720	1,720
Net income				1,717,223		1,717,223		1,717,223
Net income allocated to noncontrolling interests				(6,192)		(6,192)	6,192	(6,192)
Distributions to equity holders:
Preferred shares (Note 8)				(216,316)		(216,316)		(216,316)
Noncontrolling interests							(7,022)	(7,022)
Common shares and restricted share units				(1,396,364)		(1,396,364)		(1,396,364)
Other comprehensive income (loss) (Note 2)					11,004	11,004		11,004
Balances at Dec. 31, 2018	$ 4,025,000	$ 17,413	$ 5,718,485	$ (577,360)	$ (64,060)	$ 9,119,478	$ 25,250	$ 9,144,728

Statement Of Equity (Parentheti

Statement Of Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Statements Of Equity [Abstract]
Issuance of preferred shares, shares	23,200	47,000
Redemption of preferred shares, shares	36,900	34,500
Issuance of common shares in connection with share-based compensation, shares	564,583	367,546
Common shares and restricted share units, per share distribution	$ 8	$ 7.30

Statements Of Cash Flows

Statements Of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net income	$ 1,717,223	$ 1,448,465	$ 1,460,439
Adjustments to reconcile net income to net cash flows from operating activities:
Gain due to Shurgard Europe public offering	(151,616)
Gain on real estate investment sales	(37,903)	(1,421)	(689)
Assets damaged due to hurricanes		3,286
Depreciation and amortization	483,646	454,526	433,314
Equity in earnings of unconsolidated real estate entities	(103,495)	(75,655)	(56,756)
Distributions from retained earnings of unconsolidated real estate entities	109,754	53,749	84,397
Foreign currency exchange (gain) loss	(18,117)	50,045	(17,570)
Share-based compensation expense	69,936	37,548	37,483
Other	(7,925)	5,136	4,718
Total adjustments	344,280	527,214	484,897
Net cash flows from operating activities	2,061,503	1,975,679	1,945,336
Cash flows from investing activities:
Capital expenditures to maintain real estate facilities	(140,067)	(122,199)	(81,435)
Construction in process	(338,802)	(338,479)	(269,916)
Acquisition of real estate facilities and intangible assets	(181,020)	(285,279)	(416,178)
Distributions in excess of retained earnings from unconsolidated real estate entities	91,927		67,420
Proceeds from sale of real estate investments	54,184	6,103	998
Net cash flows from investing activities	(513,778)	(739,854)	(699,111)
Cash flows from financing activities:
Repayments on notes payable	(1,784)	(1,701)	(36,459)
Issuance of notes payable		992,077	113,620
Issuance of preferred shares		561,177	1,136,203
Issuance of common shares	12,525	42,500	25,541
Redemption of preferred shares		(922,500)	(862,500)
Cash paid upon vesting of restricted share units	(12,347)	(14,092)	(15,357)
Acquisition of noncontrolling interests		(14,425)
Contributions by noncontrolling interests	1,720	2,484	3,470
Distributions paid to Public Storage shareholders	(1,612,680)	(1,630,347)	(1,505,758)
Distributions paid to noncontrolling interests	(7,022)	(7,392)	(7,586)
Net cash flows from financing activities	(1,619,588)	(992,219)	(1,148,826)
Net cash flows from operating, investing and financing activities	(71,863)	243,606	97,399
Net effect of foreign exchange translation	(171)	(126)	(381)
(Decrease) increase in cash, equivalents, and restricted cash	(72,034)	243,480	97,018
Cash, equivalents, and restricted cash at beginning of the period:
Cash and equivalents	433,376	183,688	104,285
Restricted cash included in other assets	22,677	28,885	11,270
Cash, equivalents, and restricted cash	456,053	212,573	115,555
Cash, equivalents, and restricted cash at end of the period:
Cash and equivalents	361,218	433,376	183,688
Restricted cash included in other assets	22,801	22,677	28,885
Cash, equivalents, and restricted cash	384,019	456,053	212,573
Foreign currency translation adjustment:
Real estate facilities, net of accumulated depreciation	203	(659)	1,317
Investments in unconsolidated real estate entities	15,997	(19,370)	24,099
Notes payable	(18,285)	49,906	(17,750)
Accumulated other comprehensive gain (loss)	1,914	(30,003)	(8,047)
Reclassification of existing investment to real estate in connection with property acquisition (Note 3):
Real estate facilities		(6,310)
Investments in unconsolidated real estate entities		6,310
Real estate acquired in exchange for assumption of notes payable			(12,945)
Notes payable assumed in connection with acquisition of real estate			12,945
Accrued development costs and capital expenditures:
Capital expenditures to maintain real estate facilities	670	(2,581)	(4,612)
Construction in process	(23,595)	(11,233)	(18,238)
Accrued and other liabilities	$ 22,925	$ 13,814	$ 22,850

Description Of The Business

Description Of The Business	12 Months Ended
	Dec. 31, 2018
Description Of The Business [Abstract]
Description Of The Business	1. Description of the Business Public Storage (referred to herein as “the Company,” “we,” “us,” or “our”), a Maryland real estate investment trust (“REIT”), was organized in 1980. Our principal business activities include the ownership and operation of self-storage facilities which offer storage spaces for lease, generally on a month-to-month basis, for personal and business use, ancillary activities such as merchandise sales and tenant reinsurance to the tenants at our self-storage facilities, as well as the acquisition and development of additional self-storage space. At December 31, 2018, we have direct and indirect equity interests in 2, 429 self-storage facilities (with approximately 1 62 million net rentable square feet) located in 38 states in the United States (“U.S.”) operating under the “Public Storage” name. We also have a 35.2% interest in Shurgard Self Storage SA (“Shurgard Europe”), which owns 2 32 self-storage facilities (with approximately 13 million net rentable square feet) located in seven Western European countries, all operating under the “Shurgard” name. We also have direct and indirect equity interests in approximately 29 million net rentable square feet of commercial space located in seven states in the U.S. primarily owned and operated by PS Business Parks, Inc. (“PSB”) under the “PS Business Parks” name. At December 31, 2018, we have an approximate 42% common equity interest in PSB. Disclosures of the number and square footage of facilities, as well as the number and coverage of tenant reinsurance policies ( Note 13) are unaudited and outside the scope of our independent registered public accounting firm’s review of our financial statements in accordance with the standards of the Public Company Accounting Oversight Board (U.S.).

Summary Of Significant Accounti

Summary Of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2018
Summary Of Significant Accounting Policies [Abstract]
Summary Of Significant Accounting Policies	2. Summary of Significant Accounting Policies Basis of Presentation The financial statements are presented on an accrual basis in accordance with U.S. generally accepted accounting principles (“GAAP”) as defined in the Financial Accounting Standards Board Accounting Standards Codification (the “Codification”). Consolidation and Equity Method of Accounting We consider entities to be Variable Interest Entities (“VIEs”) when they have insufficient equity to finance their activities without additional subordinated financial support provided by other parties, or the equity holders as a group do not have a controlling financial interest. We consolidate VIEs when we have (i) the power to direct the activities most significantly impacting economic performance, and (ii) either the obligation to absorb losses or the right to receive benefits from the VIE. We have no involvement with any material VIEs. We consolidate all other entities when we control them through voting shares or contractual rights. The entities we consolidate, for the period in which the reference applies, are referred to collectively as the “Subsidiaries,” and we eliminate intercompany transactions and balances. We account for our investments in entities that we do not consolidate but have significant influence over using the equity method of accounting. These entities, for the periods in which the reference applies, are referred to collectively as the “Unconsolidated Real Estate Entities”, eliminating intra-entity profits and losses and amortizing any differences between the cost of our investment and the underlying equity in net assets against equity in earnings as if the Unconsolidated Real Estate Entity were a consolidated subsidiary. Equity in earnings of unconsolidated real estate entities represents our pro-rata share of the earnings of the Unconsolidated Real Estate Entities. When we begin consolidating an entity, we reflect our preexisting equity interest at book value. All changes in consolidation status are reflected prospectively. Collectively, at December 31, 2018, the Company and the Subsidiaries own 2, 429 self-storage facilities and three commercial facilities in the U.S . At December 31, 201 8 , the Unconsolidated Real Esta te Entities are comprised of PSB and Shurgard Europe . Use of Estimates The financial statements and accompanying notes reflect our estimates and assumptions. Actual results could differ from those estimates and assumptions. Income Taxes We have elected to be treated as a REIT, as defined in the Internal Revenue Code of 1986, as amended (the “Code”). As a REIT, we do not incur federal income tax if we distribute 100% of our REIT taxable income each year, and if we meet certain organizational and operational rules. We believe we have met these REIT requirements for all periods presented herein. Accordingly, we have recorded no federal income tax expense related to our REIT taxable income. Our merchandise and tenant reinsurance operations are subject to corporate income tax and such taxes are included in ancillary cost of operations. We also incur income and other taxes in certain states, which are included in general and administrative expense. We recognize tax benefits of uncertain income tax positions that are subject to audit only if we believe it is more likely than not that the position would ultimately be sustained assuming the relevant taxing authorities had full knowledge of the relevant facts and circumstances of our positions. As of December 31, 201 8 , we had no tax benefits that were not recognized. Real Estate Facilities Real estate facilities are recorded at cost. We capitalize all costs incurred to acquire, develop, construct, renovate and improve facilities, including interest and property taxes incurred during the construction period and, effective October 1, 2016, the external transaction costs associated with acquisitions of real estate. Prior to October 1, 2016, transaction costs for acquisitions were included in general and administrative expense on our income statements. This change was made due to a change in GAAP, which results in real estate facility acquisitions generally being considered acquisitions of assets rather than business combinations. We allocate the net acquisition cost of acquired real estate facilities to the underlying land, buildings, and identified intangible assets based upon their respective individual estimated fair values. Costs associated with dispositions of real estate, as well as repairs and maintenance costs, are expensed as incurred. We depreciate buildings and improvements on a straight-line basis over estimated useful lives ranging generally between 5 to 25 years. When we sell a full or partial interest in a real estate facility without retaining a controlling interest following sale, we recognize a gain or loss on sale as if 100% of the property was sold at fair value. If we retain a controlling interest following the sale, we record a gain or loss on a pro-rata basis based upon the interest sold.  Other Assets Other assets primarily consist of rents receivable from our tenants, prepaid expenses and restricted cash. Accrued and Other Liabilities Accrued and other liabilities consist primarily of rents prepaid by our tenants, trade payables, property tax accruals, accrued payroll, accrued tenant reinsurance losses, and contingent loss accruals when probable and estimable . We believe the fair value of our accrued and other liabilities approximates book value, due to the short period until repayment. We disclose the nature of significant unaccrued losses that are reasonably possible of occurring and, if estimable, a range of exposure. Cash Equivalents, Restricted Cash, Marketable Securities and Other Financial Instruments Cash equivalents represent highly liquid financial instruments such as money market funds with daily liquidity or short-term commercial paper or treasury securities maturing within three months of acquisition. Cash and equivalents which are restricted from general corporate use are included in other assets. We believe that the book value of all such financial instruments for all periods presented approximates fair value, due to the short period to maturity. Fair Value As used herein, the term “fair value” is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. Our estimates of fair value involve considerable judgment and are not necessarily indicative of the amounts that could be realized in current market exchanges. We estimate the fair value of our cash and equivalents, marketable securities, other assets, debt, and other liabilities by discounting the related future cash flows at a rate based upon quoted interest rates for securities that have similar characteristics such as credit quality and time to maturity. Such quoted interest rates are referred to generally as “Level 2” inputs. We use significant judgment to estimate fair values of investments in real estate, goodwill, and other intangible assets. In estimating their values, we consider significant unobservable inputs such as market prices of land, market capitalization rates, expected returns, earnings multiples, projected levels of earnings, costs of construction, and functional depreciation. These inputs are referred to generally as “Level 3” inputs. Currency and Credit Risk Financial instruments that are exposed to credit risk consist primarily of cash and equivalents, certain portions of other assets including rents receivable from our tenants and restricted cash. Cash equivalents we invest in are either money market funds with a rating of at least AAA by Standard & Poor’s, commercial paper that is rated A1 by Standard & Poor’s or deposits with highly rated commercial banks. At December 31, 201 8 , due primarily to our investment in Shurgard Europe (Note 4) and o u r notes payable denominated in Euros (Note 6), our operating results and financial position are affected by fluctuations in currency exchange rates between the Euro, and to a lesser extent, other European currencies, against the U.S. Dollar. Goodwill and Other Intangible Assets Intangible assets are comprised of goodwill, the “Shurgard” trade name, acquired customers in place, and leasehold interests in land. Goodwill totaled $174.6 million at December 31, 2018 and 2017. The “Shurgard” trade name, which is used by Shurgard Europe pursuant to a fee-based licensing agreement, has a book value of $18.8 million at December 31, 2018 and 2017. Goodwill and the “Shurgard” trade name have indefinite lives and are not amortized. Acquired customers in place and leasehold interests in land are finite-lived assets and are amortized relative to the benefit of the customers in place or the benefit to land lease expense to each period. At December 31, 2018, these intangibles had a net book value of $ 16.5 m illion ( $2 1.5 million at December 31, 2017). Accumulated amortization totaled $ 29.6 million at December 31, 2018 ( $31. 0 million at December 31, 2017), and amortization expense of $16. 6 million, $ 15.0 million and $ 21.7 million was recorded in 2018, 2017 and 2016, respectively. The estimated future amortization expense for our finite-lived intangible assets at December 31, 2018 is approximately $9 .2 million in 2019, $2. 5 million in 2020 and $ 4.8 million thereafter. During 2018, 2017 and 2016, intangibles increased $ 11.6 million, $ 17.2 million and $ 23.0 million, respectively, in connection with the acquisition of self-storage facilities (Note 3). Evaluation of Asset Impairment We evaluate our real estate and finite-lived intangible assets for impairment each quarter. If there are indicators of impairment and we determine that the asset is not recoverable from future undiscounted cash flows to be received through the asset’s remaining life (or, if earlier, the expected disposal date), we record an impairment charge to the extent the carrying amount exceeds the asset’s estimated fair value or net proceeds from expected disposal. We evaluate our investments in unconsolidated real estate entities for impairment on a quarterly basis. We record an impairment charge to the extent the carrying amount exceeds estimated fair value, when we believe any such shortfall is other than temporary. We evaluate goodwill for impairment annually and whenever relevant events, circumstances and other related factors indicate that fair value of the related reporting unit may be less than the carrying amount. If we determine that the fair value of the reporting unit exceeds the aggregate carrying amount, no impairment charge is recorded. Otherwise, we record an impairment charge to the extent the carrying amount of the goodwill exceeds the amount that would be allocated to goodwill if the reporting unit were acquired for estimated fair value. We evaluate other indefinite-lived intangible assets, such as the “Shurgard” trade name for impairment at least annually and whenever relevant events, circumstances and other related factors indicate that the fair value is less than the carrying amount. When we conclude that it is likely that the asset is not impaired, we do not record an impairment charge and no further analysis is performed. Otherwise, we record an impairment charge to the extent the carrying amount exceeds the asset’s estimated fair value. No impairments were recorded in any of our evaluations for any period presented herein. Casualty Loss We record casualty losses for a ) the book value of assets destroyed and b ) incremental repair, clean-up, and other costs associated with the casualty. Insurance proceeds are recorded as a reduction in casualty loss when all uncertainties of collection are satisfied. During 2017, we incurred casualty losses totaling $7.8 million, comprised of $3.3 million in book value of assets damaged and $4.5 million in repairs and maintenance incurred in connection with Hurricanes Harvey and Irma. Revenue and Expense Recognition Revenues from self-storage facilities, which are primarily composed of rental income earned pursuant to month-to-month leases, as well as associated late charges and administrative fees, are recognized as earned. Promotional discounts reduce rental income over the promotional period, which is generally one month. Ancillary revenues and interest and other income are recognized when earned. We accrue for property tax expense based upon actual amounts billed and, in some circumstances, estimates when bills or assessments have not been received from the taxing authorities. If these estimates are incorrect, the timing and amount of expense recognition could be incorrect. Cost of operations (including advertising expenditures), general and administrative expense, and interest expense are expensed as incurred. Foreign Currency Exchange Translation The local currency (primarily the Euro) is the functional currency for our interests in foreign operations. The related balance sheet amounts are translated into U.S. Dollars at the exchange rates at the respective financial statement date, while amounts on our statements of income are translated at the average exchange rates during the respective period . When financial instruments denominated in a currency other than the U.S. Dollar are expected to be settled in cash in the foreseeable future, the impact of changes in the U.S. Dollar equivalent are reflected in current earnings. The Euro was translated at exchange rates of approximately 1. 144 U.S. Dollars per Euro at December 31, 2018 ( 1. 198 at December 31, 2017), and average exchange rates of 1.1 81 , 1. 129 and 1. 107 for the years ended December 31, 2018, 2017 and 2016, respectively. Cumulative translation adjustments, to the extent not included in cumulative net income, are included in equity as a component of accumulated other comprehensive income (loss). Comprehensive Income Total comprehensive income represents net income, adjusted for changes in other comprehensive income (loss) for the applicable period. The aggregate foreign currency exchange gains and losses reflected on our statements of comprehensive income are comprised primarily of foreign currency exchange gains and losses on our investment in Shurgard Europe and our unsecured notes denominated in Euros. Net Income per Common Share Net income is allocated to (i) noncontrolling interests based upon their share of the net income of the Subsidiaries, (ii) preferred shareholders, to the extent redemption cost exceeds the related original net issuance proceeds (an “EITF D-42 allocation”), and (iii) the remaining net income is allocated to each of our equity securities based upon the dividends declared or accumulated during the period, combined with participation rights in undistributed earnings. Basic and diluted net income per common share are each calculated based upon net income allocable to common shareholders presented on the face of our income statement, divided by (i) in the case of basic net income per common share, weighted average common shares, and (ii) in the case of diluted income per share, weighted average common shares adjusted for the impact, if dilutive, of stock options outstanding ( Note 10). The following table reconciles from basic to diluted common shares outstanding (amounts in thousands) :   For the Years Ended December 31,  2018 2017 2016   Weighted average common shares and equivalents  outstanding:  Basic weighted average common  shares outstanding 173,969 173,613 173,091  Net effect of dilutive stock options -  based on treasury stock method 328 538 787  Diluted weighted average common  shares outstanding 174,297 174,151 173,878 

Real Estate Facilities

Real Estate Facilities	12 Months Ended
	Dec. 31, 2018
Real Estate Facilities [Abstract]
Real Estate Facilities	 3. Real Estate Facilities Activity in real estate facilities during 2018, 2017 and 2016 is as follows :      For the Years Ended December 31,  2018 2017 2016  (Amounts in thousands)  Operating facilities, at cost:  Beginning balance $ 14,665,989 $ 13,963,229 $ 13,205,261  Capital expenditures to maintain real estate facilities 139,397 124,780 86,047  Acquisitions 169,436 274,115 406,154  Dispositions (25,633) (1,092) -  Assets damaged due to hurricanes - (8,226) -  Developed or redeveloped facilities opened for operation 348,270 311,559 268,905  Impact of foreign exchange rate changes (615) 1,624 (3,138)  Ending balance 15,296,844 14,665,989 13,963,229  Accumulated depreciation:  Beginning balance (5,700,331) (5,270,963) (4,866,738)  Depreciation expense (457,029) (433,466) (406,046)  Dispositions 16,876 123 -  Assets damaged due to hurricanes - 4,940 -  Impact of foreign exchange rate changes 412 (965) 1,821  Ending balance (6,140,072) (5,700,331) (5,270,963)  Construction in process:  Beginning balance 264,441 230,310 219,190  Current development 362,397 349,712 288,154  Developed or redeveloped facilities opened for operation (348,270) (311,559) (268,905)  Dispositions (2,698) (4,022) -  Transfer from (to) other assets 9,469 - (8,129)  Ending balance 285,339 264,441 230,310  Total real estate facilities at December 31, $ 9,442,111 $ 9,230,099 $ 8,922,576 During 2018, we acquired 25 self-storage facilities ( 1.6 million net rentable square feet), for a total cost of $ 181.0 million in cash, of which $ 11.6 million was allocated to intangible assets. We completed development and redevelopment activities costing $ 348.3 million during 2018 , adding 3.0 million net rentable square feet of self-storage space. Construction in process at December 31, 2018 consists of projects to develop new self-storage facilities and redevelop existing self-storage facilities. On October 18, 2018, we sold our property in West London to Shurgard Europe for $42.1 million and recorded a related gain on sale of real estate of approximately $31.5 million. This gain was net of the recognition of a cumulative other comprehensive loss totaling $4.8 million with respect to foreign currency translation. On October 25, 2018, we sold a former commercial facility for $8. 7 million and recorded a related gain on sale of real estate of approximately $4.6 million. During 2018, we also sold portions of real estate facilities in connection with eminent domain proceedings for $3. 4 million in cash proceeds and recorded a related gain on sale of real estate of approximately $1. 8 million. During 2018, we also transferred $9.5 million of accumulated construction costs from other assets to construction in process. During 2017 , we acquired 22 self-storage facilities from third parties ( 1,365,000 net rentable square feet), for a total cost of $ 149.8 million, in cash. Approximately $ 8.2 million of the total cost was allocated to intangible assets. On December 31, 2017, we acquired the remaining 74.25% of the interests which we did not own in one of the unconsolidated entities that owned 12 self-storage facilities ( 749,000 net rentable square feet) for a total cost of $135.5 million in cash. Approximately $ 9.0 million of the $141.8 million acquisition cost (which includes the $6.3 million book value of our existing investment) was allocated to intangible assets and $0.3 million was allocated to other assets. We completed development and redevelopment activities during 201 7 , adding 2. 7 million net rentable square feet of self-storage space, at an aggregate cost of $ 311.6 million. During 2017, we sold real estate for a total of approximately $6. 4 million in cash proceeds, of which $0.3 million was collected in 2016, and recorded a related gain on real estate investment sales of approximately $1. 4 million in 2017. During 2016, we acquired 55 self-storage facilities ( 4,121,000 net rentable square feet), for a total cost of $429.1 million, consisting of $ 416.2 million in cash and the assumption of $12.9 million in mortgage notes . Approximately $ 23.0 million of the total cost was allocated to intangible assets. We completed development and redevelopment activities during 2016, adding 2,275,000 net rentable square feet of self-storage space, at an aggregate cost of $ 268.9 million. During 2016, we also transferred $8.1 million of accumulated construction costs to other assets, with respect to a development project that was suspended. At December 31, 201 8 , the adjusted basis of real estate facilities for U.S. federal tax purposes was approximately $10. 0 billion (unaudited ).

Investments In Unconsolidated R

Investments In Unconsolidated Real Estate Entities	12 Months Ended
	Dec. 31, 2018
Investments In Unconsolidated Real Estate Entities [Abstract]
Investments In Unconsolidated Real Estate Entities	4. Investments in Unconsolidated Real Estate Entities The following table sets forth our investments in, and equity in earnings of, the Unconsolidated Real Estate Entities (amounts in thousands):   Investments in Unconsolidated Real Estate Equity in Earnings of Unconsolidated Real Estate  Entities at December 31, Entities for the Year Ended December 31,  2018 2017 2018 2017 2016   PSB $ 434,533 $ 400,133 $ 89,362 $ 46,544 $ 31,707  Shurgard Europe 349,455 324,040 14,133 25,948 22,324  Other Investments - - - 3,163 2,725  Total $ 783,988 $ 724,173 $ 103,495 $ 75,655 $ 56,756  Investment in PSB PSB is a REIT traded on the New York Stock Exchange. We have an approximate 42% common equity interest in PSB as of December 31, 2018 and 2017, comprised of our ownership of 7,158,354 shares of PSB’s common stock and 7,305,355 limited partnership units (“LP Units”) in an operating partnership controlled by PSB. The LP Units are convertible at our option, subject to certain conditions, on a one-for-one basis into PSB common stock. Based upon the closing price at December 31, 2018 ( $1 31.00 per share of PSB common stock), the shares and units we owned had a market value of approximately $1.9 billion. At December 31, 2018, the adjusted tax basis of our investment in PSB approximates book value (unaudited). During 2018, 2017, and 2016, we received cash distributions from PSB totaling $55.0 million, $49.2 million, and $43.4 million, respectively. At December 31, 2018, our pro-rata investment in PSB’s real estate assets included in investment in real estate entities exceeds our pro-rata share of the underlying amounts on PSB’s balance sheet presented below by approximately $ 7.4 million ( $10.9 million at December 31, 2017). This differential (the “PSB Basis Differential”) is being amortized as a reduction to equity in earnings of the Unconsolidated Real Estate Entities. Such amortization totaled approximately $1. 8 million, $1.3 million, and $1.8 million during 2018, 2017, and 2016, respectively. Our equity in earnings of PSB is comprised of our equity interest in PSB’s earnings as reflected in the table below, less amortization of the PSB Basis Differential. The following table sets forth selected financial information of PSB. The amounts represent all of PSB’s balances and not our pro-rata share.    2018 2017 2016   (Amounts in thousands)  For the year ended December 31,  Revenues $ 413,516 $ 402,179 $ 386,871  Costs of operations (126,547) (125,340) (123,108)  Depreciation and amortization (99,242) (94,270) (99,486)  General and administrative (10,155) (9,679) (14,862)  Other items 1,875 (1,148) (4,431)  Gains on sale of real estate 93,484 7,574 -  Net income before allocation to preferred  shareholders and restricted share unitholders 272,931 179,316 144,984  Allocations to preferred shareholders and  restricted share unitholders (53,803) (64,612) (65,157)  Net income allocated to common shareholders  and LP Unitholders $ 219,128 $ 114,704 $ 79,827       Total assets (primarily real estate) $ 2,068,594 $ 2,100,159 $ 2,119,371  Preferred stock called for redemption - 130,000 230,000  Other liabilities 85,141 80,223 78,657  Equity:  Preferred stock 959,750 959,750 879,750  Common equity and LP units 1,023,703 930,186 930,964  Investment in Shurgard Europe On October 15, 2018, Shurgard Europe completed an initial global offering (the “Offering”) of its common shares, and its shares commenced trading on Euronext Brussels under the “SHUR” symbol. In the Offering, Shurgard Europe issued 25,000,000 of its shares to third parties at a price of €23 per share. Our equity interest, comprised of a direct and indirect pro-rata ownership interest in 31,268,459 shares, decreased from 49% to 35.2% as a result of the Offering. While we did not sell any of our shares in the Offering, we recorded a gain of $151. 6 million reflected as “Gain due to Shurgard Europe Public Offering” on our income statement, as if we had sold a proportionate share of our investment in Shurgard Europe. The gain resulted in a $174. 0 million increase in our investment in Shurgard Europe and a $22. 4 million reduction in other comprehensive loss with respect to cumulative foreign currency translation losses for Shurgard Europe. Based upon the closing price at December 31, 2018 ( €24.25 per share of SHUR common stock, at 1.144 exchange rate of US Dollars to the Euro), the shares we owned had a market value of approximately $867.4 million. Our equity in earnings of Shurgard Europe is comprised of our equity share of Shurgard Europe’s net income included in the tables below and our equity share of the trademark license fees that Shurgard Europe pays to us for the use of the “Shurgard” trademark. The remaining license fees we receive from Shurgard Europe are classified as interest and other income on our income statement. We received cash distributions from Shurgard Europe totaling $146. 7 million, $1.3 million, and $ 105.6 million in 2018, 2017, and 2016, respectively. Included in these amounts is our share of a distribution paid to Shurgard’s equity shareholders totaling $145.4 million in 2018 and $104. 4 million in 2016. The remaining amounts represent our equity share of trademark license fees we received, which are presented as distributions from Shurgard Europe. For 2018 and 2016, $91.9 million and $ 67.4 million, respectively, of the distributions received exceeded our cumulative retained earnings from Shurgard Europe and are presented as an investing activity on our statements of cash flows for each of the respective periods. Changes in foreign currency exchange rates decreased our investment in Shurgard Europe by approximately $16. 0 million in 2018, increased it by $19. 4 million in 2017 and decreased it by $24. 1 million in 2016. Included in our equity in earnings of Shurgard Europe for 2016 is a $ 941,000 increase for the recognition of accumulated comprehensive income, representing a decrease to equity rather than an increase to investments in Unconsolidated Real Estate Entities. The following table sets forth selected consolidated financial information of Shurgard Europe based upon all of Shurgard Europe’s balances for all periods, rather than our pro rata share. Such amounts are based upon our historical acquired book basis.     2018 2017 2016   (Amounts in thousands)  For the year ended December 31,  Self-storage and ancillary revenues $ 284,992 $ 265,088 $ 252,321  Self-storage and ancillary cost of operations (104,376) (98,510) (97,099)  Depreciation and amortization (82,655) (63,282) (62,829)  General and administrative (11,755) (12,465) (13,199)  Interest expense on third party debt (22,749) (20,759) (20,617)  Trademark license fee payable to Public Storage (2,852) (2,647) (2,531)  Income tax expense (22,775) (17,601) (10,669)  Gain on real estate investment sale 1,969 - -  Other, net (a) (14,726) 484 (2,348)   Net income $ 25,073 $ 50,308 $ 43,029  Average exchange rates of Euro to the U.S. Dollar 1.181 1.129 1.107   (a) Amounts for the year ended December 31, 2018 include $5.5 million in costs  incurred with respect to Shurgard Europe's initial global offering and a $7.3 million  casualty loss with respect to a fire at one of Shurgard Europe's facilities.      2018 2017 2016  (Amounts in thousands)  As of December 31,  Total assets (primarily self-storage facilities and cash) $ 1,736,654 $ 1,416,477 $ 1,261,912  Total debt to third parties 693,704 726,617 666,926  Other liabilities 143,963 143,638 106,916  Equity 898,987 546,222 488,070   Exchange rate of Euro to U.S. Dollar 1.144 1.198 1.052 Other Investments  On December 31, 2017, we acquired the remaining 74.25% equity interest we did not own in the Other Investments for $135.5 million, in cash, and began to consolidate the 12 self-storage facilities owned by the Other Investmen ts.

Credit Facility

Credit Facility	12 Months Ended
	Dec. 31, 2018
Credit Facility [Abstract]
Credit Facility	5 . Credit Facility We have a revolving credit agreement (the “Credit Facility”) with a $500 million borrowing limit, which expires on March 31, 2020 . Amounts drawn on the Credit Facility bear annual interest at rates ranging from LIBOR plus 0.850% to LIBOR plus 1.450% depending upon the ratio of our Total Indebtedness to Gross Asset Value (as defined in the Credit Facility) (LIBOR plus 0.850% at December 31, 2018). We are also required to pay a quarterly facility fee ranging from 0.080% per annum to 0.250% per annum depending upon the ratio of our Total Indebtedness to our Gross Asset Value ( 0.080% per annum at December 31, 2018). At December 31, 2018 and February 27 , 2019, we had no outstanding borrowings under this Credit Facility. We had undrawn standby letters of credit, which reduce our borrowing capacity, totaling $1 6.2 million at December 31, 2018 ( $1 6.1 million at December 31, 2017). The Credit Facility has various customary restrictive covenants, all of which we were in compliance with at December 31, 201 8 .

Notes Payable

Notes Payable	12 Months Ended
	Dec. 31, 2018
Notes Payable [Abstract]
Notes Payable	6 . Notes Payable Our notes payable at December 31, 2018 and 2017 are set forth in the table below:    Amounts at December 31, 2018  Coupon Effective Unamortized Book Fair Book Value at  Rate Rate Principal Costs Value Value December 31, 2017  ($ amounts in thousands)  U.S. Dollar Denominated Unsecured Debt  Notes due September 2022 2.370% 2.483% $ 500,000 $ (1,947) $ 498,053 $ 482,017 $ 497,525  Notes due September 2027 3.094% 3.218% 500,000 (4,604) 495,396 469,055 494,868  1,000,000 (6,551) 993,449 951,072 992,393   Euro Denominated Unsecured Debt  Notes due April 2024 1.540% 1.540% 114,449 - 114,449 115,964 119,795  Notes due November 2025 2.175% 2.175% 276,982 - 276,982 286,078 289,921  391,431 - 391,431 402,042 409,716  Mortgage Debt , secured by 30  real estate facilities with a net  book value of $111.0 million 4.090% 4.045% 27,403 - 27,403 27,613 29,213   $ 1,418,834 $ (6,551) $ 1,412,283 $ 1,380,727 $ 1,431,322  U.S. Dollar Denominated Unsecured Debt On September 18, 2017 , we issued, in a public offering, two tranches each totaling $500.0 million of U.S. Dollar denominated unsecured notes (the “U.S. Dollar Notes”). In connection with the offering, we incurred a total of $7.9 million in costs, which is reflected as a reduction in the principal amount and amortized, using the effective interest method, over the term of each respective note. Interest on the U.S. Dollar Notes is payable semi-annually on March 15 and September 15 of each year, commencing March 15, 2018. The U.S. Dollar Notes have various financial covenants, all of which we were in compliance with at December 31, 2018. Included in these covenants are a) a maximum Debt to Total Assets of 65% ( 4.2% at December 31, 2018) and b) a minimum ratio of Adjusted EBITDA to Interest Expense of 1.5x ( 67.4x for the year ended December 31, 2018) as well as covenants limiting the amount we can encumber our properties with mortgage debt. Euro Denominated Unsecured Debt Our Euro- denominated uns ec ured notes (the “Euro Notes”) are payable to institutional investors. The Euro Notes consist of two tranches, (i) €242.0 million were issued on November 3, 2015 for $264.3 million in net proceeds upon converting the Euros to U.S. Dollars and (ii) €100.0 million were issu ed on April 12, 2016 for $113.6 million in net proceeds upon converting the Euros to U.S. Dollars. Interest is payable semi-annually. The Euro Notes have various customary financial covenants, all of which we were in compliance with at December 31, 201 8 . We reflect changes in the U.S. Dollar equivalent of the amount payable, as a result of changes in foreign exchange rates as “foreign currency exchange (loss) gain” on our income statement (gain of $18.1 million for 2018, loss of $50. 0 million for 2017 and gain of $ 17.6 million for 2016). Mortgage Debt Our non-recourse mortgage debt was assumed in connection with property acquisitions and recorded at fair value with any premium or discount to the stated note balance amortized using the effective interest method. During 2016 , we assumed mortgage notes with ag gregate contractual values of $12.9 m illion and interest rates of 4.2 %, which approximated market rates, in connection with the acquisition of real estate facilities. At December 31, 201 8 , the notes ’ contractual interest rates are fixed, ranging between 3.2% and 7.1% , and mature between November 20 22 and September 2028 . At December 31 , 201 8 , approximate principal maturities of our Notes Payable are as follows (amounts in thousands):   Unsecured Mortgage  Debt Debt Total    2019 $ - $ 1,867 $ 1,867  2020 - 1,958 1,958  2021 - 1,836 1,836  2022 500,000 2,522 502,522  2023 - 19,161 19,161  Thereafter 891,431 59 891,490  $ 1,391,431 $ 27,403 $ 1,418,834  Weighted average effective rate 2.6% 4.0% 2.6% Cash paid for interest totaled $36.3 million, $ 16.8 million and $ 9.4 million for 2018, 2017 and 2016, respectively. Interest capitalized as real estate totaled $4.8 million , $ 4.4 million and $ 5.1 million for 2018, 2017 and 2016, respectively .

Noncontrolling Interests

Noncontrolling Interests	12 Months Ended
	Dec. 31, 2018
Noncontrolling Interests [Abstract]
Noncontrolling Interests	7 . Noncontrolling Interests At December 31, 201 8 , the noncontrolling interests represent (i) third-party equity interests in subsidiaries owning 1 7 operating self-storage facilities and five self-storage facilities that are under construction and (ii) 231,978 partnership units held by third-parties in a subsidiary that are convertible on a one-for-one basis (subject to certain limitations) into common shares of the Company at the option of the unitholder (collectively, the “Noncontrolling Interests”). At December 31, 2018, the Noncontrolling Interests cannot require us to redeem their interests, other than pursuant to a liquidation of the subsidiary. During 2018, 2017 and 2016, we allocated a total of $6.2 million, $6. 2 million and $ 6.9 million, respectively, of income to these interests; and we paid $7.0 million, $ 7 .4 million and $ 7. 6 million, respectively, in distributions to these interests. During 2017, we acquired Noncontrolling Interests for $ 14.4 million ( none for 2018 or 2016) in cash, of which $7.7 million was allocated to Paid-in capital and $6.7 million as a reduction to Noncontrolling Interests. During 2018, 2017 and 2016, Noncontrolling Interests contributed $1.7 million , $2.5 million and $ 3.5 million, respectively.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2018
Shareholders’ Equity [Abstract]
Shareholders' Equity	 8 . Shareholders’ Equity Preferred Shares At December 31, 201 8 and 201 7 , we had the following series of Cumulative Preferred Shares (“Preferred Shares”) outstanding:     Series Earliest Redemption Date Dividend Rate Shares Outstanding Liquidation Preference   (Dollar amounts in thousands)  Series U 6/15/2017 5.625% 11,500 $ 287,500  Series V 9/20/2017 5.375% 19,800 495,000  Series W 1/16/2018 5.200% 20,000 500,000  Series X 3/13/2018 5.200% 9,000 225,000  Series Y 3/17/2019 6.375% 11,400 285,000  Series Z 6/4/2019 6.000% 11,500 287,500  Series A 12/2/2019 5.875% 7,600 190,000  Series B 1/20/2021 5.400% 12,000 300,000  Series C 5/17/2021 5.125% 8,000 200,000  Series D 7/20/2021 4.950% 13,000 325,000  Series E 10/14/2021 4.900% 14,000 350,000  Series F 6/2/2022 5.150% 11,200 280,000  Series G 8/9/2022 5.050% 12,000 300,000  Total Preferred Shares 161,000 $ 4,025,000 The holders of our Preferred Shares have general preference rights with respect to liquidation, quarterly distributions and any accumulated unpaid distributions. Except under certain conditions and as noted below, holders of the Preferred Shares will not be entitled to vote on most matters. In the event of a cumulative arrearage equal to six quarterly dividends, holders of all outstanding series of preferred shares (voting as a single class without regard to series) will have the right to elect two additional members to serve on our board of trustees (our “Board”) until the arrearage has been cured. At December 31, 2018, there were no dividends in arrears. Except under certain conditions relating to the Company’s qualification as a REIT, the Preferred Shares are not redeemable prior to the dates indicated on the table above. On or after the respective dates, each of the series of Preferred Shares is redeemable at our option, in whole or in part, at $25.00 per depositary share, plus accrued and unpaid dividends. Holders of the Preferred Shares cannot require us to redeem such shares. Upon issuance of our Preferred Shares, we classify the liquidation value as preferred equity on our balance sheet with any issuance costs recorded as a reduction to Paid-in capital. In 2017, we redeemed our Series S and Series T Preferred Shares, at par, for a total of $922.5 million in cash, before payment of accrued dividends. In 2017, we issued an aggregate 23.2 million depositary shares, each representing 1/1 ,000 of a share of our Series F and Series G Preferred Shares, at an issuance price of $25.00 per depositary share, for a total of $580.0 million in gross proceeds, and we incurred $18. 8 million in issuance costs. In 2016, we redeemed our Series Q and Series R Preferred Shares at par, for a total of $862.5 million in cash, before payment of accrued dividends. In 201 6, we issued an aggregate 47.0 million depositary shares, each representing 1/1 ,000 of a share of our Series B, Series C, Series D and Series E Preferred Shares, at an issuance price of $25.00 per depositary share , for a total of $1,175. 0 m illion in gross proceeds, and we incurred $ 38.8 million in issuance costs. In 2017 and 2016, we recorded $29.3 million and $26.9 mi llion, respectively, in EITF D-42 allocations of income from our common shareholders to the holders of our Preferred Shares in connection with redemptions of Preferred Shares. Common Shares During 201 8 , 201 7 and 201 6 , activity with respect to the issuance of our common shares was as follows (dollar amounts in thousands):   2018 2017 2016  Shares Amount Shares Amount Shares Amount  Employee stock-based compensation and  exercise of stock options (Note 10) 277,511 $ 12,525 564,583 $ 42,500 367,546 $ 25,541 Our Board previously authorized the repurchase from time to time of up to 35.0 million of our common shares on the open market or in privately negotiated transactions. Through December 31, 2018, we repurchased approximately 23.7 million shares pursuant to this authorization; none of which were repurchased during the three years ended December 31, 2018. At December 31, 201 8 and 2017, we had 3,138 ,618 and 3,208,046 , respectively, of common shares reserved in connection with our share-based incentive plans (see Note 10 ), and 231,978 shares reserved for the conversion of partnership units owned by Noncontrolling Interests. The unaudited characterization of dividends for U.S. federal income tax purposes is made based upon earnings and profits of the Company, as defined by the Code. Common share dividends including amounts paid to our common shareholders and our restricted share unitholders totaled $1.39 6 billion ( $8.00 per share), $1. 394 billion ( $8.00 per share) and $ 1.26 8 billion ( $7.30 per share) for the years ended December 31, 2018, 2017 and 2016, respectively. Preferred share dividends totaled $216. 3 million, $2 36.5 million and $2 38.2 million for the years ended December 31, 2018, 2017 and 2016, respectively. For the tax year ended December 31, 201 8 , distributions for the common shares and all the various series of preferred shares were classified as follows:    2018 (unaudited)  1st Quarter 2nd Quarter 3rd Quarter 4th Quarter  Ordinary Income 100.00 % 100.00 % 100.00 % 93.17 %  Long-Term Capital Gain 0.00 % 0.00 % 0.00 % 6.83 %  Total 100.00 % 100.00 % 100.00 % 100.00 %  The ordinary income dividends distributed for the tax year ended December 31, 2018 do not constitute qualified dividend income.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2018
Related Party Transactions [Abstract]
Related Party Transactions	9 . Related Party Transactions B. Wayne Hughes, our former Chairman and his family, including his daughter Tamara Hughes Gustavson and his son B. Wayne Hughes, Jr., who are both members of our Board, collectively own approximately 14.5% of our common shares outstanding at December 31, 2018. At December 31, 2018, B. Wayne Hughes and Tamara Hughes Gustavson together owned and controlled 62 self-storage facilities in Canada. These facilities operate under the “Public Storage” tradename, which we license to the owners of these facilities for use in Canada on a royalty-free, non-exclusive basis. We have no ownership interest in these facilities and we do not own or operate any facilities in Canada. If we chose to acquire or develop our own facilities in Canada, we would have to share the use of the “Public Storage” name in Canada. We have a right of first refusal, subject to limitations, to acquire the stock or assets of the corporation engaged in the operation of these facilities if their owners agree to sell them. Our subsidiaries reinsure risks relating to loss of goods stored by customers in these facilities, and have received approxim ately $1. 3 million, $ 1.1 million and $848,000 for the years ended December 31, 2018, 2017 and 2016, respectively . Our right to continue receiving these premiums may be qualified.

Share-Based Compensation

Share-Based Compensation	12 Months Ended
	Dec. 31, 2018
Share-Based Compensation [Abstract]
Share-Based Compensation	10 . Share-Based Compensation Under various share-based compensation plans and under terms established by our Board or a committee thereof, we grant non-qualified options to purchase the Company’s common shares, as well as restricted share units (“RSUs”), to trustees, officers, and key employees. Stock options and RSUs are considered “granted” and “outstanding” as the terms are used herein, when (i) the Company and the recipient reach a mutual understanding of the key terms of the award, (ii) the award has been authorized, (iii) the recipient is affected by changes in the market price of our stock, and (iv) it is probable that any performance conditions will be met. We amortize the grant-date fair value of awards as compensation expense over the service period, which begins on the grant date and ends generally on the vesting date. For awards that are earned solely upon the passage of time and continued service, the entire cost of the award is amortized on a straight-line basis over the service period. For awards with performance conditions, the individual cost of each vesting is amortized separately over each individual service period (the “accelerated attribution” method). In amortizing share-based compensation expense, we do not estimate future forfeitures in advance. Instead, we reverse previously amortized share-based compensation expense with respect to grants that are forfeited in the period the employee terminates employment. We recorded a cumulative-effect adjustment of $789,000 to increase accumulated deficit and increase paid-in capital as of January 1, 2016, representing the impact of estimated forfeitures at December 31, 2015. In February 2018, we announced that Ron Havner and John Reyes, our Chief Executive Officer and Chief Financial Officer, respectively, at the time, were retiring from their executive roles at the end of 2018 and would then serve only as Trustees of the Company. Pursuant to our share-based compensation plans, their unvested grants will continue to vest over the original vesting periods during their service as Trustees. For financial reporting, the end of the service periods for previous stock option and RSU grants for these executives changed from (i) the various vesting dates to (ii) December 31, 2018 when they retired. Accordingly, all remaining share-based compensation expense for these two executives was amortized in the year ended December 31, 2018. See also “net income per common share” in Note 2 for further discussion regarding the impact of RSUs and stock options on our net income per common share and income allocated to common shareholders. Stock Options Stock options vest over a three to five -year period, expire ten years after the grant date, and the exercise price is equal to the closing trading price of our common shares on the grant date. Employees cannot require the Company to settle their award in cash. We issue new common shares in order to settle exercised stock options. We use the Black-Scholes option valuation model to estimate the fair value of our stock options. Outstanding stock option grants are included on a one-for-one basis in our diluted weighted average shares, to the extent dilutive, after applying the treasury stock method (based upon the average common share price during the period) to assumed exercise proceeds and measured but unrecognized compensation. Th e stock options outstanding at December 31, 2018 have an aggregate intrinsic value (the excess, if any, of each option’s market value over the exercise price) of approximately $ 35.8 million and remaining average contractual lives of approximately s ix years. The aggregate intrinsic value of exercisable stock options at December 31, 2018 amounted to approximately $31. 3 million. Approximately 1,351,000 of the stock options outstanding at December 31, 2018, have an exercise price of more than $200 . We have 69,75 5 stock options exercisable at December 31, 2018, which expire through June 30, 20 20 , with an average exercise price per share of $ 71.55 . Additional information with respect to stock options during 2018, 2017 and 2016 is as follows:     2018 2017 2016  Weighted Weighted Weighted  Average Average Average  Number Exercise Number Exercise Number Exercise  of Price of Price of Price  Options per Share Options per Share Options per Share  Options outstanding January 1, 2,408,917 $ 192.12 1,995,440 $ 150.83 1,940,279 $ 130.08  Granted 200,000 194.29 1,096,000 223.58 310,000 239.11  Exercised (179,995) 69.53 (482,523) 88.07 (254,839) 100.23  Cancelled (8,000) 223.50 (200,000) 203.64 - -   Options outstanding December 31, 2,420,922 $ 201.31 2,408,917 $ 192.12 1,995,440 $ 150.83   Options exercisable at December 31, 1,147,122 $ 178.31 848,250 $ 143.55 1,105,433 $ 108.84          2018 2017 2016   Stock option expense for the year (in 000's) (a) $ 17,162 $ 8,707 $ 5,180   Aggregate exercise date intrinsic value of options exercised during the year (in 000's) $ 25,117 $ 61,334 $ 33,228   Average assumptions used in valuing options with the Black-Scholes method:  Expected life of options in years, based upon historical experience 5 5 5  Risk-free interest rate 2.7% 1.9% 1.2%  Expected volatility, based upon historical volatility 12.5% 17.9% 17.9%  Expected dividend yield 4.1% 3.6% 2.9%   Average estimated value of options granted during the year $ 13.09 $ 23.49 $ 26.18 (a) Amounts for 2018 include $8.1 million, in connection with the acceleration of amortization on grants discussed above. Amounts for 2017 reflect a reduction in compensatio n expense of $0.8 million related to stock options forfeited during the period. Restricted Share Units RSUs generally vest ratably over a five to eight -year period from the grant date. The grantee receives dividends for each outstanding RSU equal to the per-share dividends received by our common shareholders. We expense any dividends previously paid upon forfeiture of the related RSU. Upon vesting, the grantee receives common shares equal to the number of vested RSUs, less common shares withheld in exchange for tax deposits made by the Company to satisfy the grantee’s statutory tax liabilities arising from the vesting. The fair value of our RSUs is determined based upon the applicable closing trading price of our common shares. The fair value of our RSUs outstanding at December 31, 2018 was approximately $145. 3 million. Remaining compensation expense related to RSUs outstanding at December 31, 2018 totals approximately $ 91.1 million and is expected to be recognized as compensation expense over the next 5.3 years on average. The following tables set forth relevant information with respect to restricted shares (dollar amounts in thousands):   2018 2017 2016  Number of Grant Date Number of Grant Date Number of Grant Date  Restricted Aggregate Restricted Aggregate Restricted Aggregate  Share Units Fair Value Share Units Fair Value Share Units Fair Value  Restricted share units outstanding January 1, 799,129 $ 166,144 696,641 $ 136,905 737,388 $ 129,284  Granted 138,567 27,733 340,957 73,953 171,144 40,263  Vested (164,104) (30,717) (144,473) (25,305) (180,050) (26,689)  Forfeited (55,896) (11,948) (93,996) (19,409) (31,841) (5,953)   Restricted share units outstanding December 31, 717,696 $ 151,212 799,129 $ 166,144 696,641 $ 136,905      2018 2017 2016  Amounts for the year (in 000's, except number of shares):  Fair value of vested shares on vesting date $ 32,317 $ 31,962 $ 41,400  Cash paid for taxes upon vesting in lieu of issuing common shares $ 12,347 $ 14,092 $ 15,357  Common shares issued upon vesting 97,516 82,060 112,707  Restricted share unit expense (a) $ 53,869 $ 28,841 $ 32,303   (a) Amounts for 2018, 2017 and 2016 include approximately $ 1.1 million, $0. 7 million and $1. 4 million, respectively, in employer taxes incurred upon vesting . Amounts for 2018 include $22.6 million, in connection with the acceleration of amortization on grants to our CEO and CFO as discussed above. Amounts for 2017 reflect a reduction in compensation expense of $4.6 million related to RSUs forfeited during the period. 

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2018
Segment Information [Abstract]
Segment Information	11 . Segment Information Our reportable segments reflect the significant components of our operations where discrete financial information is evaluated separately by our chief operating decision maker (“CODM”). We organize our segments based primarily upon the nature of the underlying products and services, as well as the drivers of profitability growth. The net income for each reportable segment included in the tables below are in conformity with GAAP and our significant accounting policies as denoted in Note 2. The amounts not attributable to reportable segments are aggregated under “other items not allocated to segments.” Following is a description of and basis for presentation for each of our reportable segments. Self-Storage Operations The Self-Storage Operations segment reflects the rental operations from all self-storage facilities we own. Our CODM reviews the net operating income (“NOI”) of this segment, which represents the related revenues less cost of operations (prior to depreciation expense), in assessing performance and making resource allocation decisions. The presentation in the tables below sets forth the NOI of this segment, as well as the depreciation expense for this segment, which while reviewed by our CODM and included in net income, is not considered by the CODM in assessing performance and decision making. For all periods presented, substantially all of our real estate facilities, goodwill and other intangible assets, other assets, and accrued and other liabilities are associated with the Self-Storage Operations segment. Ancillary Operations The Ancillary Operations segment reflects the sale of merchandise and reinsurance of policies against losses to goods stored by our self-storage tenants, activities which are incidental to our primary self-storage rental activities. Our CODM reviews the NOI of these operations in assessing performance and making resource allocation decisions. Investment in PSB This segment represents our 42% equity interest in PSB, a publicly-traded REIT that owns, operates, acquires and develops commercial properties, primarily multi-tenant flex, office, and industrial space. PSB has a separate management team that makes its financing, capital allocation, and other significant decisions. In making resource allocation decisions with respect to our investment in PSB, the CODM reviews PSB’s net income, which is detailed in PSB’s periodic filings with the SEC, and is included in Note 4. The segment presentation in the tables below includes our equity earnings from PSB. Investment in Shurgard Europe This segment represents our equity interest in Shurgard Europe, a publicly held company which owns and operates self-storage facilities located in seven countries in Western Europe. On October 15, 2018, Shurgard Europe completed an Offering of its common shares, and its shares commenced trading on Euronext Brussels under the “SHUR” symbol. Shurgard Europe has a separate management team and board of trustees that makes its financing, capital allocation, and other significant decisions. In making resource allocation decisions with respect to our investment in Shurgard Europe, the CODM reviews Shurgard Europe’s net income, which is detailed in Note 4. The segment presentation below includes our equity earnings from Shurgard Europe. Presentation of Segment Information The following tables reconcile NOI (as applicable) and net income of each segment to our consolidated net income (amounts in thousands):      For the year ended December 31, 2018   Self-Storage Operations Ancillary Operations Investment in PSB Investment in Shurgard Europe Other Items Not Allocated to Segments Total   (Amounts in thousands)  Revenues:  Self-storage operations $ 2,597,607 $ - $ - $ - $ - $ 2,597,607  Ancillary operations - 156,673 - - - 156,673  2,597,607 156,673 - - - 2,754,280   Cost of operations:  Self-storage operations 695,731 - - - - 695,731  Ancillary operations - 43,991 - - - 43,991  695,731 43,991 - - - 739,722   Net operating income:  Self-storage operations 1,901,876 - - - - 1,901,876  Ancillary operations - 112,682 - - - 112,682  1,901,876 112,682 - - - 2,014,558   Other components of net income (loss):  Depreciation and amortization (483,646) - - - - (483,646)  General and administrative - - - - (118,720) (118,720)  Interest and other income - - - - 26,442 26,442  Interest expense - - - - (32,542) (32,542)  Equity in earnings of  unconsolidated real estate entities - - 89,362 14,133 - 103,495  Foreign currency exchange gain - - - - 18,117 18,117  Gain on sale of real estate - - - - 37,903 37,903  Gain due to Shurgard Europe  public offering - - - 151,616 - 151,616  Net income (loss) $ 1,418,230 $ 112,682 $ 89,362 $ 165,749 $ (68,800) $ 1,717,223      For the year ended December 31, 2017   Self-Storage Operations Ancillary Operations Investment in PSB Investment in Shurgard Europe Other Items Not Allocated to Segments Total   (Amounts in thousands)  Revenues:  Self-storage operations $ 2,512,433 $ - $ - $ - $ - $ 2,512,433  Ancillary operations - 156,095 - - - 156,095  2,512,433 156,095 - - - 2,668,528   Cost of operations:  Self-storage operations 657,633 - - - - 657,633  Ancillary operations - 50,345 - - - 50,345  657,633 50,345 - - - 707,978   Net operating income:  Self-storage operations 1,854,800 - - - - 1,854,800  Ancillary operations - 105,750 - - - 105,750  1,854,800 105,750 - - - 1,960,550   Other components of net income (loss):  Depreciation and amortization (454,526) - - - - (454,526)  General and administrative - - - - (82,882) (82,882)  Interest and other income - - - - 18,771 18,771  Interest expense - - - - (12,690) (12,690)  Equity in earnings of  unconsolidated real estate entities - - 46,544 25,948 3,163 75,655  Foreign currency exchange loss - - - - (50,045) (50,045)  Casualty loss - - - - (7,789) (7,789)  Gain on sale of real estate - - - - 1,421 1,421  Net income (loss) $ 1,400,274 $ 105,750 $ 46,544 $ 25,948 $ (130,051) $ 1,448,465    For the year ended December 31, 2016   Self-Storage Operations Ancillary Operations Investment in PSB Investment in Shurgard Europe Other Items Not Allocated to Segments Total   (Amounts in thousands)  Revenues:  Self-storage operations $ 2,405,828 $ - $ - $ - $ - $ 2,405,828  Ancillary operations - 154,721 - - - 154,721  2,405,828 154,721 - - - 2,560,549   Cost of operations:  Self-storage operations 617,905 - - - - 617,905  Ancillary operations - 51,178 - - - 51,178  617,905 51,178 - - - 669,083   Net operating income:  Self-storage operations 1,787,923 - - - - 1,787,923  Ancillary operations - 103,543 - - - 103,543  1,787,923 103,543 - - - 1,891,466   Other components of net income (loss):  Depreciation and amortization (433,314) - - - - (433,314)  General and administrative - - - - (83,656) (83,656)  Interest and other income - - - - 15,138 15,138  Interest expense - - - - (4,210) (4,210)  Equity in earnings of  unconsolidated real estate entities - - 31,707 22,324 2,725 56,756  Foreign currency exchange gain - - - - 17,570 17,570  Gain on sale of real estate - - - - 689 689  Net income (loss) $ 1,354,609 $ 103,543 $ 31,707 $ 22,324 $ (51,744) $ 1,460,439 

Recent Accounting Pronouncement

Recent Accounting Pronouncements And Guidance	12 Months Ended
	Dec. 31, 2018
Recent Accounting Pronouncements And Guidance [Abstract]
Recent Accounting Pronouncements And Guidance	12. Recent Accounting Pronouncements and Guidance In May 2014, the FASB issued Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers (Topic 606), which requires revenue to be based upon the consideration expected from customers for promised goods or services. In February 2017, the FASB issued ASU 2017-05, Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets, which provides guidance with respect to the sale of real estate facilities. The new standards permit either the retrospective or cumulative effects transition method. We adopted the new standards effective January 1, 2018 utilizing the modified retrospective transition method applied to open contracts. The new standards did not have a material impact on our results of operations or financial condition, primarily because most of our revenue is from rental revenue from self-storage facilities, and included in self-storage facilities revenue on our statements of income, which the new standards do not address, and because we do not provide any material products and services to our customers or sell material amounts of our real estate facilities. The remainder of our revenues are composed of elements that are either covered by the new standards but not impacted, or are not covered by the new standards. In February 2016, the FASB issued ASU 2016-02, Leases, which amends the existing accounting standards for lease accounting, including requiring lessees to recognize most leases on their balance sheets and making targeted changes to lessor accounting. The new standard, effective on January 1, 2019, requires a modified retrospective transition approach for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief effective January 1, 2019 with a cumulative effect through December 31, 2018 recorded through retained earnings. The primary practical expedients we used included (i) using hindsight in determining the lease term and in assessing impairment of right-of-use assets, (ii) not assessing whether existing or expired land easements that were not previously accounted for as leases are or contain a lease under this new standard, and (iii) not separating lease and associated non-lease components for all existing leases where we are a lessor at January 1, 2019 in accordance with the requirements of the practical expedient. We do not believe this standard will have a material impact on our results of operations or financial condition, because substantially all of our lease revenues are derived from month-to-month self-storage leases, and we do not have material amounts of lease expense. In May 2017, the FASB issued ASU 2017-09, Stock Compensation: Scope of Modification Accounting, to increase clarity and consistency of practice and reduce cost and complexity when modifying the terms of share-based awards. We prospectively adopted this guidance effective January 1, 2018, with no material impact on our financial statements. In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230) - Restricted Cash , which primarily requires the statement of cash flows to explain not only the change in cash and equivalents, but also the change in restricted cash. The standard is effective on January 1, 2018, with early adoption permitted and requires the use of the retrospective transition method. The Company early adopted the new guidance during the fourth quarter of 2017. 

Commitments And Contingencies

Commitments And Contingencies	12 Months Ended
	Dec. 31, 2018
Commitments And Contingencies [Abstract]
Commitments And Contingencies	13. Commitments and Contingencies Contingent Losses We are a party to various legal proceedings and subject to various claims and complaints; however, we believe that the likelihood of these contingencies resulting in a material loss to the Company, either individually or in the aggregate, is remote. Insurance and Loss Exposure We carry property, earthquake, general liability, employee medical insurance and workers compensation coverage through internationally recognized insurance carriers, subject to deductibles. Our deductible for general liability is $2.0 million per occurrence. Our annual deductible for property loss is $25.0 million per occurrence. This deductible decreases to $5.0 million once we reach $35.0 million in aggregate losses for occurrences that exceed $5.0 million. Insurance carriers’ aggregate limits on these policies of $75.0 million for property losses and $102.0 million for general liability losses are higher than estimates of maximum probable losses that could occur from individual catastrophic events determined in recent engineering and actuarial studies; however, in case of multiple catastrophic events, these limits could be exceeded. We reinsure a program that provides insurance to our customers from an independent third-party insurer. This program covers customer claims for losses to goods stored at our facilities as a result of specific named perils (earthquakes are not covered by this program), up to a maximum limit of $5,000 per storage unit. We reinsure all risks in this program, but purchase insurance to cover this exposure for a limit of $15.0 million for losses in excess of $5.0 million per occurrence. We are subject to licensing requirements and regulations in several states. Customers participate in the program at their option. At December 31, 201 8 , there were approximately 914,000 certificates held by our self-storage customers, representing aggregate coverage of approximately $2. 9 billion . Construction Commitments We have construction commitments representing future expected payments for construction under contract totaling $138. 5 million at December 31, 2018. We expect to pay approximately $126. 3 million in 2019 and $12. 2 million in 2020 for these construction commitments .

Supplementary Quarterly Financi

Supplementary Quarterly Financial Data	12 Months Ended
	Dec. 31, 2018
Supplementary Quarterly Financial Data [Abstract]
Supplementary Quarterly Financial Data	1 4 . Supplementary Quarterly Financial Data (unaudited)     Three Months Ended  March 31, June 30, September 30, December 31,  2018 2018 2018 2018  (Amounts in thousands, except per share data)   Self-storage and ancillary revenues $ 669,924 $ 685,528 $ 706,368 $ 692,460   Self-storage and ancillary cost of operations $ 192,827 $ 190,977 $ 195,544 $ 160,374   Depreciation and amortization $ 117,979 $ 119,777 $ 124,516 $ 121,374   Net Income $ 344,436 $ 405,292 $ 379,589 $ 587,906   Per Common Share  Net income - Basic $ 1.66 $ 2.00 $ 1.85 $ 3.05   Net income - Diluted $ 1.65 $ 2.00 $ 1.85 $ 3.04    Three Months Ended  March 31, June 30, September 30, December 31,  2017 2017 2017 2017  (Amounts in thousands, except per share data)   Self-storage and ancillary revenues $ 645,547 $ 664,312 $ 686,361 $ 672,308   Self-storage and ancillary cost of operations $ 182,902 $ 182,578 $ 190,619 $ 151,879   Depreciation and amortization $ 110,929 $ 110,177 $ 113,320 $ 120,100   Net Income $ 344,021 $ 355,207 $ 358,274 $ 390,963   Per Common Share  Net income - Basic $ 1.62 $ 1.59 $ 1.61 $ 1.92   Net income - Diluted $ 1.62 $ 1.59 $ 1.61 $ 1.92  

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2018
Subsequent Events [Abstract]
Subsequent Events	15 . Subsequent Events Subsequent to December 3 1 , 2018, we acquired or were under contract to acquire 1 4 self-storage facilities ( nine in Virginia and one each in Colorad o , Florida , Georgia , Kentucky a nd Michigan with 935,000 net rentable square feet, for $102. 4 millio n . On February 22, 2019, we called for redemption, and on March 28, 2019, we will redeem our 6.375% Series Y Preferred Shares, at par ( $285.0 million). We will record an $8.5 million allocation of income from our common shareholders to the holders of our Preferred Shares in the three months ending March 31, 2019 in connection with this redemption.

Schedule III - Real Estate And

Schedule III - Real Estate And Accumulated Depreciation	12 Months Ended
	Dec. 31, 2018
Schedule III - Real Estate And Accumulated Depreciation [Abstract]
Schedule III - Real Estate And Accumulated Depreciation	   Self-storage facilities by market:  Los Angeles 224 16,086 538 510,249 924,346 296,987 507,862 1,223,720 1,731,582 686,584  Houston 123 9,093 - 177,951 443,126 142,048 177,412 585,713 763,125 261,800  San Francisco 138 8,952 - 241,791 527,127 190,078 254,541 704,455 958,996 426,169  Dallas/Ft. Worth 122 8,760 - 173,223 414,707 118,863 174,821 531,972 706,793 257,203  Chicago 130 8,172 - 137,165 352,595 122,609 140,002 472,367 612,369 340,765  New York 94 6,940 - 250,900 548,541 166,300 257,237 708,504 965,741 386,344  Atlanta 103 6,749 - 129,671 341,153 67,847 129,468 409,203 538,671 243,122  Seattle/Tacoma 93 6,424 - 183,213 466,998 95,459 182,225 563,445 745,670 301,030  Miami 90 6,416 - 215,278 461,099 87,470 217,170 546,677 763,847 284,258  Washington DC 91 5,648 - 233,905 406,769 112,017 239,100 513,591 752,691 285,899  Orlando/Daytona 72 4,550 12,174 140,411 253,375 55,715 145,892 303,609 449,501 141,198  Denver 61 4,295 9,661 95,009 226,499 65,256 95,738 291,026 386,764 131,592  Charlotte 54 4,056 - 77,016 194,846 54,628 84,879 241,611 326,490 107,397  Minneapolis/St. Paul 54 3,690 3,931 107,071 211,200 25,259 107,236 236,294 343,530 106,371  Tampa 53 3,613 - 87,165 174,499 46,672 89,927 218,409 308,336 113,117  Philadelphia 57 3,582 - 51,682 152,406 55,037 50,703 208,422 259,125 152,874  West Palm Beach 45 3,398 - 153,414 216,913 48,466 154,122 264,671 418,793 109,277  Detroit 41 2,795 - 62,990 159,461 28,972 63,840 187,583 251,423 103,405  Phoenix 38 2,536 - 60,974 169,042 25,757 60,965 194,808 255,773 94,513  Austin 31 2,343 - 51,150 115,641 39,486 53,172 153,105 206,277 76,208  Portland 43 2,256 - 51,182 126,464 26,792 51,840 152,598 204,438 95,235  Sacramento 34 1,959 - 25,141 69,409 27,711 25,646 96,615 122,261 72,863  Raleigh 28 1,882 - 50,348 99,583 28,318 51,479 126,770 178,249 54,523  San Diego 20 1,815 - 47,884 108,911 39,142 50,394 145,543 195,937 80,945  San Antonio 28 1,791 - 27,566 76,028 26,691 27,524 102,761 130,285 62,052  Norfolk 29 1,727 - 35,608 92,053 17,323 35,047 109,937 144,984 57,997  Boston 25 1,679 - 61,583 158,870 21,353 62,149 179,657 241,806 83,539  Columbus 22 1,629 - 25,341 64,746 26,791 25,448 91,430 116,878 41,711  Oklahoma City 22 1,533 - 35,704 68,360 12,840 35,704 81,200 116,904 19,843  Baltimore 23 1,472 - 25,176 79,734 18,139 25,300 97,749 123,049 66,565  Indianapolis 23 1,472 - 21,945 60,353 12,874 22,945 72,227 95,172 42,326  St. Louis 26 1,464 - 20,037 56,237 21,401 20,680 76,995 97,675 60,081  Kansas City 24 1,461 - 14,225 43,732 27,046 14,425 70,578 85,003 57,162  Columbia 23 1,331 - 20,169 57,131 19,062 20,928 75,434 96,362 31,667  Las Vegas 20 1,259 - 23,168 52,723 10,024 22,417 63,498 85,915 46,030  Milwaukee 15 964 1,099 13,189 32,071 9,958 13,158 42,060 55,218 31,402  Cincinnati 17 947 - 15,023 32,351 22,398 14,941 54,831 69,772 27,878  Louisville 14 875 - 22,813 43,250 6,390 22,812 49,641 72,453 11,155  Jacksonville 14 841 - 11,252 27,714 11,197 11,301 38,862 50,163 30,515  Nashville/Bowling Green 16 835 - 12,744 29,420 10,330 12,742 39,752 52,494 26,255  Honolulu 11 807 - 54,184 106,299 11,378 55,101 116,760 171,861 58,488  Greensboro 13 787 - 12,737 29,811 13,032 14,826 40,754 55,580 24,203  Colorado Springs 12 706 - 8,229 19,659 12,877 8,225 32,540 40,765 26,212  Chattanooga 10 706 - 6,569 26,045 6,682 6,371 32,925 39,296 13,385  Hartford/New Haven 11 693 - 6,778 19,959 21,307 8,443 39,601 48,044 30,275  Savannah 12 690 - 33,094 42,465 2,267 31,766 46,060 77,826 13,779  Charleston 11 681 - 12,415 34,114 16,528 13,391 49,666 63,057 21,688  Fort Myers/Naples 9 670 - 15,373 35,353 4,945 15,608 40,063 55,671 15,558  New Orleans 9 627 - 9,205 30,832 5,871 9,373 36,535 45,908 23,480  Greensville/Spartanburg/Asheville 11 623 - 9,036 20,767 9,349 9,965 29,187 39,152 18,918  Reno 7 559 - 5,487 18,704 3,987 5,487 22,691 28,178 11,189  Birmingham 14 538 - 5,229 17,835 13,238 5,117 31,185 36,302 26,512  Salt Lake City 8 517 - 7,846 15,947 4,625 7,495 20,923 28,418 13,744  Memphis 9 510 - 7,962 21,981 8,784 9,315 29,412 38,727 19,019  Buffalo/Rochester 9 462 - 6,785 17,954 3,617 6,783 21,573 28,356 12,638  Richmond 10 460 - 13,248 23,253 4,248 13,053 27,696 40,749 16,460  Tucson 7 439 - 9,403 25,491 5,475 9,884 30,485 40,369 17,863  Cleveland/Akron 7 437 - 4,070 16,139 5,344 4,463 21,090 25,553 10,952  Wichita 7 433 - 2,017 6,691 7,078 2,130 13,656 15,786 11,416  Mobile 9 394 - 4,257 17,441 4,532 4,084 22,146 26,230 11,804  Omaha 4 377 - 7,491 20,930 1,800 7,491 22,730 30,221 2,165  Monterey/Salinas 7 329 - 8,465 24,151 4,045 8,455 28,206 36,661 19,811  Palm Springs 3 242 - 8,309 18,065 1,240 8,309 19,305 27,614 9,531  Evansville 4 232 - 1,826 8,445 1,169 1,798 9,642 11,440 3,132  Dayton 5 230 - 1,074 8,975 4,752 1,073 13,728 14,801 6,593  Augusta 4 202 - 1,793 5,990 2,328 1,793 8,318 10,111 5,497  Fort Wayne 3 168 - 349 3,594 3,095 349 6,689 7,038 5,718  Providence 3 155 - 995 11,206 2,847 995 14,053 15,048 5,716  Huntsville/Decatur 3 153 - 1,024 3,321 2,989 971 6,363 7,334 5,820  Shreveport 2 150 - 817 3,030 2,252 741 5,358 6,099 4,498  Springfield/Holyoke 2 144 - 1,428 3,380 1,781 1,427 5,162 6,589 4,401  Rochester 2 99 - 1,047 2,246 1,963 980 4,276 5,256 3,710  Santa Barbara 2 98 - 5,733 9,106 385 5,733 9,491 15,224 5,043  Topeka 2 94 - 225 1,419 1,983 225 3,402 3,627 2,852  Lansing 2 88 - 556 2,882 821 556 3,703 4,259 2,058  Roanoke 1 57 - 819 1,776 580 819 2,356 3,175 2,132  Flint 1 56 - 543 3,068 217 542 3,286 3,828 1,687  Joplin 1 56 - 264 904 952 264 1,856 2,120 1,538  Syracuse 1 55 - 545 1,279 777 545 2,056 2,601 1,897  Modesto/Fresno/Stockton 1 33 - 44 206 963 193 1,020 1,213 725   Commercial and non-operating  real estate - 9,615 22,472 24,155 10,651 45,591 56,242 39,095    2,429 162,047 $27,403 $3,987,212 $8,842,668 $2,466,964 $4,047,982 $11,248,862 $15,296,844 $6,140,072   Note: Buildings and improvements are depreciated on a straight-line basis over estimated useful lives ranging generally  between 5 to 25 years. In addition, disclosures of the number and square footage of our facilities are unaudited.  

Summary Of Significant Accoun_2

Summary Of Significant Accounting Policies (Policy)	12 Months Ended
	Dec. 31, 2018
Summary Of Significant Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The financial statements are presented on an accrual basis in accordance with U.S. generally accepted accounting principles (“GAAP”) as defined in the Financial Accounting Standards Board Accounting Standards Codification (the “Codification”).
Consolidation and Equity Method of Accounting	Consolidation and Equity Method of Accounting We consider entities to be Variable Interest Entities (“VIEs”) when they have insufficient equity to finance their activities without additional subordinated financial support provided by other parties, or the equity holders as a group do not have a controlling financial interest. We consolidate VIEs when we have (i) the power to direct the activities most significantly impacting economic performance, and (ii) either the obligation to absorb losses or the right to receive benefits from the VIE. We have no involvement with any material VIEs. We consolidate all other entities when we control them through voting shares or contractual rights. The entities we consolidate, for the period in which the reference applies, are referred to collectively as the “Subsidiaries,” and we eliminate intercompany transactions and balances. We account for our investments in entities that we do not consolidate but have significant influence over using the equity method of accounting. These entities, for the periods in which the reference applies, are referred to collectively as the “Unconsolidated Real Estate Entities”, eliminating intra-entity profits and losses and amortizing any differences between the cost of our investment and the underlying equity in net assets against equity in earnings as if the Unconsolidated Real Estate Entity were a consolidated subsidiary. Equity in earnings of unconsolidated real estate entities represents our pro-rata share of the earnings of the Unconsolidated Real Estate Entities. When we begin consolidating an entity, we reflect our preexisting equity interest at book value. All changes in consolidation status are reflected prospectively. Collectively, at December 31, 2018, the Company and the Subsidiaries own 2, 429 self-storage facilities and three commercial facilities in the U.S . At December 31, 201 8 , the Unconsolidated Real Esta te Entities are comprised of PSB and Shurgard Europe .
Use of Estimates	Use of Estimates The financial statements and accompanying notes reflect our estimates and assumptions. Actual results could differ from those estimates and assumptions.
Income Taxes	Income Taxes We have elected to be treated as a REIT, as defined in the Internal Revenue Code of 1986, as amended (the “Code”). As a REIT, we do not incur federal income tax if we distribute 100% of our REIT taxable income each year, and if we meet certain organizational and operational rules. We believe we have met these REIT requirements for all periods presented herein. Accordingly, we have recorded no federal income tax expense related to our REIT taxable income. Our merchandise and tenant reinsurance operations are subject to corporate income tax and such taxes are included in ancillary cost of operations. We also incur income and other taxes in certain states, which are included in general and administrative expense. We recognize tax benefits of uncertain income tax positions that are subject to audit only if we believe it is more likely than not that the position would ultimately be sustained assuming the relevant taxing authorities had full knowledge of the relevant facts and circumstances of our positions. As of December 31, 201 8 , we had no tax benefits that were not recognized.
Real Estate Facilities	Real Estate Facilities Real estate facilities are recorded at cost. We capitalize all costs incurred to acquire, develop, construct, renovate and improve facilities, including interest and property taxes incurred during the construction period and, effective October 1, 2016, the external transaction costs associated with acquisitions of real estate. Prior to October 1, 2016, transaction costs for acquisitions were included in general and administrative expense on our income statements. This change was made due to a change in GAAP, which results in real estate facility acquisitions generally being considered acquisitions of assets rather than business combinations. We allocate the net acquisition cost of acquired real estate facilities to the underlying land, buildings, and identified intangible assets based upon their respective individual estimated fair values. Costs associated with dispositions of real estate, as well as repairs and maintenance costs, are expensed as incurred. We depreciate buildings and improvements on a straight-line basis over estimated useful lives ranging generally between 5 to 25 years. When we sell a full or partial interest in a real estate facility without retaining a controlling interest following sale, we recognize a gain or loss on sale as if 100% of the property was sold at fair value. If we retain a controlling interest following the sale, we record a gain or loss on a pro-rata basis based upon the interest sold. 
Other Assets	Other Assets Other assets primarily consist of rents receivable from our tenants, prepaid expenses and restricted cash.
Accrued and Other Liabilities	Accrued and Other Liabilities Accrued and other liabilities consist primarily of rents prepaid by our tenants, trade payables, property tax accruals, accrued payroll, accrued tenant reinsurance losses, and contingent loss accruals when probable and estimable . We believe the fair value of our accrued and other liabilities approximates book value, due to the short period until repayment. We disclose the nature of significant unaccrued losses that are reasonably possible of occurring and, if estimable, a range of exposure.
Cash Equivalents, Restricted Cash, Marketable Securities and Other Financial Instruments	Cash Equivalents, Restricted Cash, Marketable Securities and Other Financial Instruments Cash equivalents represent highly liquid financial instruments such as money market funds with daily liquidity or short-term commercial paper or treasury securities maturing within three months of acquisition. Cash and equivalents which are restricted from general corporate use are included in other assets. We believe that the book value of all such financial instruments for all periods presented approximates fair value, due to the short period to maturity.
Fair Value	Fair Value As used herein, the term “fair value” is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. Our estimates of fair value involve considerable judgment and are not necessarily indicative of the amounts that could be realized in current market exchanges. We estimate the fair value of our cash and equivalents, marketable securities, other assets, debt, and other liabilities by discounting the related future cash flows at a rate based upon quoted interest rates for securities that have similar characteristics such as credit quality and time to maturity. Such quoted interest rates are referred to generally as “Level 2” inputs. We use significant judgment to estimate fair values of investments in real estate, goodwill, and other intangible assets. In estimating their values, we consider significant unobservable inputs such as market prices of land, market capitalization rates, expected returns, earnings multiples, projected levels of earnings, costs of construction, and functional depreciation. These inputs are referred to generally as “Level 3” inputs.
Currency and Credit Risk	Currency and Credit Risk Financial instruments that are exposed to credit risk consist primarily of cash and equivalents, certain portions of other assets including rents receivable from our tenants and restricted cash. Cash equivalents we invest in are either money market funds with a rating of at least AAA by Standard & Poor’s, commercial paper that is rated A1 by Standard & Poor’s or deposits with highly rated commercial banks. At December 31, 201 8 , due primarily to our investment in Shurgard Europe (Note 4) and o u r notes payable denominated in Euros (Note 6), our operating results and financial position are affected by fluctuations in currency exchange rates between the Euro, and to a lesser extent, other European currencies, against the U.S. Dollar.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Intangible assets are comprised of goodwill, the “Shurgard” trade name, acquired customers in place, and leasehold interests in land. Goodwill totaled $174.6 million at December 31, 2018 and 2017. The “Shurgard” trade name, which is used by Shurgard Europe pursuant to a fee-based licensing agreement, has a book value of $18.8 million at December 31, 2018 and 2017. Goodwill and the “Shurgard” trade name have indefinite lives and are not amortized. Acquired customers in place and leasehold interests in land are finite-lived assets and are amortized relative to the benefit of the customers in place or the benefit to land lease expense to each period. At December 31, 2018, these intangibles had a net book value of $ 16.5 m illion ( $2 1.5 million at December 31, 2017). Accumulated amortization totaled $ 29.6 million at December 31, 2018 ( $31. 0 million at December 31, 2017), and amortization expense of $16. 6 million, $ 15.0 million and $ 21.7 million was recorded in 2018, 2017 and 2016, respectively. The estimated future amortization expense for our finite-lived intangible assets at December 31, 2018 is approximately $9 .2 million in 2019, $2. 5 million in 2020 and $ 4.8 million thereafter. During 2018, 2017 and 2016, intangibles increased $ 11.6 million, $ 17.2 million and $ 23.0 million, respectively, in connection with the acquisition of self-storage facilities (Note 3).
Evaluation of Asset Impairment	Evaluation of Asset Impairment We evaluate our real estate and finite-lived intangible assets for impairment each quarter. If there are indicators of impairment and we determine that the asset is not recoverable from future undiscounted cash flows to be received through the asset’s remaining life (or, if earlier, the expected disposal date), we record an impairment charge to the extent the carrying amount exceeds the asset’s estimated fair value or net proceeds from expected disposal. We evaluate our investments in unconsolidated real estate entities for impairment on a quarterly basis. We record an impairment charge to the extent the carrying amount exceeds estimated fair value, when we believe any such shortfall is other than temporary. We evaluate goodwill for impairment annually and whenever relevant events, circumstances and other related factors indicate that fair value of the related reporting unit may be less than the carrying amount. If we determine that the fair value of the reporting unit exceeds the aggregate carrying amount, no impairment charge is recorded. Otherwise, we record an impairment charge to the extent the carrying amount of the goodwill exceeds the amount that would be allocated to goodwill if the reporting unit were acquired for estimated fair value. We evaluate other indefinite-lived intangible assets, such as the “Shurgard” trade name for impairment at least annually and whenever relevant events, circumstances and other related factors indicate that the fair value is less than the carrying amount. When we conclude that it is likely that the asset is not impaired, we do not record an impairment charge and no further analysis is performed. Otherwise, we record an impairment charge to the extent the carrying amount exceeds the asset’s estimated fair value. No impairments were recorded in any of our evaluations for any period presented herein.
Casualty Loss	Casualty Loss We record casualty losses for a ) the book value of assets destroyed and b ) incremental repair, clean-up, and other costs associated with the casualty. Insurance proceeds are recorded as a reduction in casualty loss when all uncertainties of collection are satisfied. During 2017, we incurred casualty losses totaling $7.8 million, comprised of $3.3 million in book value of assets damaged and $4.5 million in repairs and maintenance incurred in connection with Hurricanes Harvey and Irma.
Revenue and Expense Recognition	Revenue and Expense Recognition Revenues from self-storage facilities, which are primarily composed of rental income earned pursuant to month-to-month leases, as well as associated late charges and administrative fees, are recognized as earned. Promotional discounts reduce rental income over the promotional period, which is generally one month. Ancillary revenues and interest and other income are recognized when earned. We accrue for property tax expense based upon actual amounts billed and, in some circumstances, estimates when bills or assessments have not been received from the taxing authorities. If these estimates are incorrect, the timing and amount of expense recognition could be incorrect. Cost of operations (including advertising expenditures), general and administrative expense, and interest expense are expensed as incurred.
Foreign Currency Exchange Translation	Foreign Currency Exchange Translation The local currency (primarily the Euro) is the functional currency for our interests in foreign operations. The related balance sheet amounts are translated into U.S. Dollars at the exchange rates at the respective financial statement date, while amounts on our statements of income are translated at the average exchange rates during the respective period . When financial instruments denominated in a currency other than the U.S. Dollar are expected to be settled in cash in the foreseeable future, the impact of changes in the U.S. Dollar equivalent are reflected in current earnings. The Euro was translated at exchange rates of approximately 1. 144 U.S. Dollars per Euro at December 31, 2018 ( 1. 198 at December 31, 2017), and average exchange rates of 1.1 81 , 1. 129 and 1. 107 for the years ended December 31, 2018, 2017 and 2016, respectively. Cumulative translation adjustments, to the extent not included in cumulative net income, are included in equity as a component of accumulated other comprehensive income (loss).
Comprehensive Income	Comprehensive Income Total comprehensive income represents net income, adjusted for changes in other comprehensive income (loss) for the applicable period. The aggregate foreign currency exchange gains and losses reflected on our statements of comprehensive income are comprised primarily of foreign currency exchange gains and losses on our investment in Shurgard Europe and our unsecured notes denominated in Euros.
Net Income Per Common Share	Net Income per Common Share Net income is allocated to (i) noncontrolling interests based upon their share of the net income of the Subsidiaries, (ii) preferred shareholders, to the extent redemption cost exceeds the related original net issuance proceeds (an “EITF D-42 allocation”), and (iii) the remaining net income is allocated to each of our equity securities based upon the dividends declared or accumulated during the period, combined with participation rights in undistributed earnings. Basic and diluted net income per common share are each calculated based upon net income allocable to common shareholders presented on the face of our income statement, divided by (i) in the case of basic net income per common share, weighted average common shares, and (ii) in the case of diluted income per share, weighted average common shares adjusted for the impact, if dilutive, of stock options outstanding ( Note 10). The following table reconciles from basic to diluted common shares outstanding (amounts in thousands) :   For the Years Ended December 31,  2018 2017 2016   Weighted average common shares and equivalents  outstanding:  Basic weighted average common  shares outstanding 173,969 173,613 173,091  Net effect of dilutive stock options -  based on treasury stock method 328 538 787  Diluted weighted average common  shares outstanding 174,297 174,151 173,878 

Summary Of Significant Accoun_3

Summary Of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2018
Summary Of Significant Accounting Policies [Abstract]
Net Income Per Common Share	  For the Years Ended December 31,  2018 2017 2016   Weighted average common shares and equivalents  outstanding:  Basic weighted average common  shares outstanding 173,969 173,613 173,091  Net effect of dilutive stock options -  based on treasury stock method 328 538 787  Diluted weighted average common  shares outstanding 174,297 174,151 173,878 

Real Estate Facilities (Tables)

Real Estate Facilities (Tables)	12 Months Ended
	Dec. 31, 2018
Real Estate Facilities [Abstract]
Schedule Of Real Estate Activities	   For the Years Ended December 31,  2018 2017 2016  (Amounts in thousands)  Operating facilities, at cost:  Beginning balance $ 14,665,989 $ 13,963,229 $ 13,205,261  Capital expenditures to maintain real estate facilities 139,397 124,780 86,047  Acquisitions 169,436 274,115 406,154  Dispositions (25,633) (1,092) -  Assets damaged due to hurricanes - (8,226) -  Developed or redeveloped facilities opened for operation 348,270 311,559 268,905  Impact of foreign exchange rate changes (615) 1,624 (3,138)  Ending balance 15,296,844 14,665,989 13,963,229  Accumulated depreciation:  Beginning balance (5,700,331) (5,270,963) (4,866,738)  Depreciation expense (457,029) (433,466) (406,046)  Dispositions 16,876 123 -  Assets damaged due to hurricanes - 4,940 -  Impact of foreign exchange rate changes 412 (965) 1,821  Ending balance (6,140,072) (5,700,331) (5,270,963)  Construction in process:  Beginning balance 264,441 230,310 219,190  Current development 362,397 349,712 288,154  Developed or redeveloped facilities opened for operation (348,270) (311,559) (268,905)  Dispositions (2,698) (4,022) -  Transfer from (to) other assets 9,469 - (8,129)  Ending balance 285,339 264,441 230,310  Total real estate facilities at December 31, $ 9,442,111 $ 9,230,099 $ 8,922,576 

Investments In Unconsolidated_2

Investments In Unconsolidated Real Estate Entities (Tables)	12 Months Ended
	Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]
Schedule Of Investments In Real Estate Entities And Equity In Earnings Of Real Estate	  Investments in Unconsolidated Real Estate Equity in Earnings of Unconsolidated Real Estate  Entities at December 31, Entities for the Year Ended December 31,  2018 2017 2018 2017 2016   PSB $ 434,533 $ 400,133 $ 89,362 $ 46,544 $ 31,707  Shurgard Europe 349,455 324,040 14,133 25,948 22,324  Other Investments - - - 3,163 2,725  Total $ 783,988 $ 724,173 $ 103,495 $ 75,655 $ 56,756 
PSB [Member]
Schedule of Equity Method Investments [Line Items]
Schedule Of Selected Financial Information	  2018 2017 2016   (Amounts in thousands)  For the year ended December 31,  Revenues $ 413,516 $ 402,179 $ 386,871  Costs of operations (126,547) (125,340) (123,108)  Depreciation and amortization (99,242) (94,270) (99,486)  General and administrative (10,155) (9,679) (14,862)  Other items 1,875 (1,148) (4,431)  Gains on sale of real estate 93,484 7,574 -  Net income before allocation to preferred  shareholders and restricted share unitholders 272,931 179,316 144,984  Allocations to preferred shareholders and  restricted share unitholders (53,803) (64,612) (65,157)  Net income allocated to common shareholders  and LP Unitholders $ 219,128 $ 114,704 $ 79,827       Total assets (primarily real estate) $ 2,068,594 $ 2,100,159 $ 2,119,371  Preferred stock called for redemption - 130,000 230,000  Other liabilities 85,141 80,223 78,657  Equity:  Preferred stock 959,750 959,750 879,750  Common equity and LP units 1,023,703 930,186 930,964 
Shurgard Europe [Member]
Schedule of Equity Method Investments [Line Items]
Schedule Of Selected Financial Information	    2018 2017 2016   (Amounts in thousands)  For the year ended December 31,  Self-storage and ancillary revenues $ 284,992 $ 265,088 $ 252,321  Self-storage and ancillary cost of operations (104,376) (98,510) (97,099)  Depreciation and amortization (82,655) (63,282) (62,829)  General and administrative (11,755) (12,465) (13,199)  Interest expense on third party debt (22,749) (20,759) (20,617)  Trademark license fee payable to Public Storage (2,852) (2,647) (2,531)  Income tax expense (22,775) (17,601) (10,669)  Gain on real estate investment sale 1,969 - -  Other, net (a) (14,726) 484 (2,348)   Net income $ 25,073 $ 50,308 $ 43,029  Average exchange rates of Euro to the U.S. Dollar 1.181 1.129 1.107   (a) Amounts for the year ended December 31, 2018 include $5.5 million in costs  incurred with respect to Shurgard Europe's initial global offering and a $7.3 million  casualty loss with respect to a fire at one of Shurgard Europe's facilities.      2018 2017 2016  (Amounts in thousands)  As of December 31,  Total assets (primarily self-storage facilities and cash) $ 1,736,654 $ 1,416,477 $ 1,261,912  Total debt to third parties 693,704 726,617 666,926  Other liabilities 143,963 143,638 106,916  Equity 898,987 546,222 488,070   Exchange rate of Euro to U.S. Dollar 1.144 1.198 1.052 

Notes Payable (Tables)

Notes Payable (Tables)	12 Months Ended
	Dec. 31, 2018
Notes Payable [Abstract]
Notes Payable	  Amounts at December 31, 2018  Coupon Effective Unamortized Book Fair Book Value at  Rate Rate Principal Costs Value Value December 31, 2017  ($ amounts in thousands)  U.S. Dollar Denominated Unsecured Debt  Notes due September 2022 2.370% 2.483% $ 500,000 $ (1,947) $ 498,053 $ 482,017 $ 497,525  Notes due September 2027 3.094% 3.218% 500,000 (4,604) 495,396 469,055 494,868  1,000,000 (6,551) 993,449 951,072 992,393   Euro Denominated Unsecured Debt  Notes due April 2024 1.540% 1.540% 114,449 - 114,449 115,964 119,795  Notes due November 2025 2.175% 2.175% 276,982 - 276,982 286,078 289,921  391,431 - 391,431 402,042 409,716  Mortgage Debt , secured by 30  real estate facilities with a net  book value of $111.0 million 4.090% 4.045% 27,403 - 27,403 27,613 29,213   $ 1,418,834 $ (6,551) $ 1,412,283 $ 1,380,727 $ 1,431,322  
Maturities Of Notes Payable	  Unsecured Mortgage  Debt Debt Total    2019 $ - $ 1,867 $ 1,867  2020 - 1,958 1,958  2021 - 1,836 1,836  2022 500,000 2,522 502,522  2023 - 19,161 19,161  Thereafter 891,431 59 891,490  $ 1,391,431 $ 27,403 $ 1,418,834  Weighted average effective rate 2.6% 4.0% 2.6% 

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2018
Shareholders’ Equity [Abstract]
Preferred Shares Outstanding	  Series Earliest Redemption Date Dividend Rate Shares Outstanding Liquidation Preference   (Dollar amounts in thousands)  Series U 6/15/2017 5.625% 11,500 $ 287,500  Series V 9/20/2017 5.375% 19,800 495,000  Series W 1/16/2018 5.200% 20,000 500,000  Series X 3/13/2018 5.200% 9,000 225,000  Series Y 3/17/2019 6.375% 11,400 285,000  Series Z 6/4/2019 6.000% 11,500 287,500  Series A 12/2/2019 5.875% 7,600 190,000  Series B 1/20/2021 5.400% 12,000 300,000  Series C 5/17/2021 5.125% 8,000 200,000  Series D 7/20/2021 4.950% 13,000 325,000  Series E 10/14/2021 4.900% 14,000 350,000  Series F 6/2/2022 5.150% 11,200 280,000  Series G 8/9/2022 5.050% 12,000 300,000  Total Preferred Shares 161,000 $ 4,025,000 
Schedule Of Issuance And Repurchases Of Common Shares	  2018 2017 2016  Shares Amount Shares Amount Shares Amount  Employee stock-based compensation and  exercise of stock options (Note 10) 277,511 $ 12,525 564,583 $ 42,500 367,546 $ 25,541 
Schedule Of Distribution Classification	  2018 (unaudited)  1st Quarter 2nd Quarter 3rd Quarter 4th Quarter  Ordinary Income 100.00 % 100.00 % 100.00 % 93.17 %  Long-Term Capital Gain 0.00 % 0.00 % 0.00 % 6.83 %  Total 100.00 % 100.00 % 100.00 % 100.00 %  

Share-Based Compensation (Table

Share-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2018
Share-Based Compensation [Abstract]
Share-Based Compensation Options Outstanding Rollforward	  2018 2017 2016  Weighted Weighted Weighted  Average Average Average  Number Exercise Number Exercise Number Exercise  of Price of Price of Price  Options per Share Options per Share Options per Share  Options outstanding January 1, 2,408,917 $ 192.12 1,995,440 $ 150.83 1,940,279 $ 130.08  Granted 200,000 194.29 1,096,000 223.58 310,000 239.11  Exercised (179,995) 69.53 (482,523) 88.07 (254,839) 100.23  Cancelled (8,000) 223.50 (200,000) 203.64 - -   Options outstanding December 31, 2,420,922 $ 201.31 2,408,917 $ 192.12 1,995,440 $ 150.83   Options exercisable at December 31, 1,147,122 $ 178.31 848,250 $ 143.55 1,105,433 $ 108.84 
Share-Based Compensation Valuation Assumptions	  2018 2017 2016   Stock option expense for the year (in 000's) (a) $ 17,162 $ 8,707 $ 5,180   Aggregate exercise date intrinsic value of options exercised during the year (in 000's) $ 25,117 $ 61,334 $ 33,228   Average assumptions used in valuing options with the Black-Scholes method:  Expected life of options in years, based upon historical experience 5 5 5  Risk-free interest rate 2.7% 1.9% 1.2%  Expected volatility, based upon historical volatility 12.5% 17.9% 17.9%  Expected dividend yield 4.1% 3.6% 2.9%   Average estimated value of options granted during the year $ 13.09 $ 23.49 $ 26.18 (a) Amounts for 2018 include $8.1 million, in connection with the acceleration of amortization on grants discussed above. Amounts for 2017 reflect a reduction in compensatio n expense of $0.8 million related to stock options forfeited during the period.
Share-Based Compensation Restricted Units Outstanding And Vesting	  2018 2017 2016  Number of Grant Date Number of Grant Date Number of Grant Date  Restricted Aggregate Restricted Aggregate Restricted Aggregate  Share Units Fair Value Share Units Fair Value Share Units Fair Value  Restricted share units outstanding January 1, 799,129 $ 166,144 696,641 $ 136,905 737,388 $ 129,284  Granted 138,567 27,733 340,957 73,953 171,144 40,263  Vested (164,104) (30,717) (144,473) (25,305) (180,050) (26,689)  Forfeited (55,896) (11,948) (93,996) (19,409) (31,841) (5,953)   Restricted share units outstanding December 31, 717,696 $ 151,212 799,129 $ 166,144 696,641 $ 136,905 
Share-Based Compensation Shares Vesting During Year	    2018 2017 2016  Amounts for the year (in 000's, except number of shares):  Fair value of vested shares on vesting date $ 32,317 $ 31,962 $ 41,400  Cash paid for taxes upon vesting in lieu of issuing common shares $ 12,347 $ 14,092 $ 15,357  Common shares issued upon vesting 97,516 82,060 112,707  Restricted share unit expense (a) $ 53,869 $ 28,841 $ 32,303   (a) Amounts for 2018, 2017 and 2016 include approximately $ 1.1 million, $0. 7 million and $1. 4 million, respectively, in employer taxes incurred upon vesting. Amounts for 2018 include $22.6 million, in connection with the acceleration of amortization on grants to our CEO and CFO as discussed above. Amounts for 2017 reflect a reduction in compensation expense of $4.6 million related to RSUs forfeited during the period.

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2018
Segment Information [Abstract]
Summary Of Segment Information	  For the year ended December 31, 2018   Self-Storage Operations Ancillary Operations Investment in PSB Investment in Shurgard Europe Other Items Not Allocated to Segments Total   (Amounts in thousands)  Revenues:  Self-storage operations $ 2,597,607 $ - $ - $ - $ - $ 2,597,607  Ancillary operations - 156,673 - - - 156,673  2,597,607 156,673 - - - 2,754,280   Cost of operations:  Self-storage operations 695,731 - - - - 695,731  Ancillary operations - 43,991 - - - 43,991  695,731 43,991 - - - 739,722   Net operating income:  Self-storage operations 1,901,876 - - - - 1,901,876  Ancillary operations - 112,682 - - - 112,682  1,901,876 112,682 - - - 2,014,558   Other components of net income (loss):  Depreciation and amortization (483,646) - - - - (483,646)  General and administrative - - - - (118,720) (118,720)  Interest and other income - - - - 26,442 26,442  Interest expense - - - - (32,542) (32,542)  Equity in earnings of  unconsolidated real estate entities - - 89,362 14,133 - 103,495  Foreign currency exchange gain - - - - 18,117 18,117  Gain on sale of real estate - - - - 37,903 37,903  Gain due to Shurgard Europe  public offering - - - 151,616 - 151,616  Net income (loss) $ 1,418,230 $ 112,682 $ 89,362 $ 165,749 $ (68,800) $ 1,717,223      For the year ended December 31, 2017   Self-Storage Operations Ancillary Operations Investment in PSB Investment in Shurgard Europe Other Items Not Allocated to Segments Total   (Amounts in thousands)  Revenues:  Self-storage operations $ 2,512,433 $ - $ - $ - $ - $ 2,512,433  Ancillary operations - 156,095 - - - 156,095  2,512,433 156,095 - - - 2,668,528   Cost of operations:  Self-storage operations 657,633 - - - - 657,633  Ancillary operations - 50,345 - - - 50,345  657,633 50,345 - - - 707,978   Net operating income:  Self-storage operations 1,854,800 - - - - 1,854,800  Ancillary operations - 105,750 - - - 105,750  1,854,800 105,750 - - - 1,960,550   Other components of net income (loss):  Depreciation and amortization (454,526) - - - - (454,526)  General and administrative - - - - (82,882) (82,882)  Interest and other income - - - - 18,771 18,771  Interest expense - - - - (12,690) (12,690)  Equity in earnings of  unconsolidated real estate entities - - 46,544 25,948 3,163 75,655  Foreign currency exchange loss - - - - (50,045) (50,045)  Casualty loss - - - - (7,789) (7,789)  Gain on sale of real estate - - - - 1,421 1,421  Net income (loss) $ 1,400,274 $ 105,750 $ 46,544 $ 25,948 $ (130,051) $ 1,448,465    For the year ended December 31, 2016   Self-Storage Operations Ancillary Operations Investment in PSB Investment in Shurgard Europe Other Items Not Allocated to Segments Total   (Amounts in thousands)  Revenues:  Self-storage operations $ 2,405,828 $ - $ - $ - $ - $ 2,405,828  Ancillary operations - 154,721 - - - 154,721  2,405,828 154,721 - - - 2,560,549   Cost of operations:  Self-storage operations 617,905 - - - - 617,905  Ancillary operations - 51,178 - - - 51,178  617,905 51,178 - - - 669,083   Net operating income:  Self-storage operations 1,787,923 - - - - 1,787,923  Ancillary operations - 103,543 - - - 103,543  1,787,923 103,543 - - - 1,891,466   Other components of net income (loss):  Depreciation and amortization (433,314) - - - - (433,314)  General and administrative - - - - (83,656) (83,656)  Interest and other income - - - - 15,138 15,138  Interest expense - - - - (4,210) (4,210)  Equity in earnings of  unconsolidated real estate entities - - 31,707 22,324 2,725 56,756  Foreign currency exchange gain - - - - 17,570 17,570  Gain on sale of real estate - - - - 689 689  Net income (loss) $ 1,354,609 $ 103,543 $ 31,707 $ 22,324 $ (51,744) $ 1,460,439 

Supplementary Quarterly Finan_2

Supplementary Quarterly Financial Data (Tables)	12 Months Ended
	Dec. 31, 2018
Supplementary Quarterly Financial Data [Abstract]
Supplementary Quarterly Financial Data	  Three Months Ended  March 31, June 30, September 30, December 31,  2018 2018 2018 2018  (Amounts in thousands, except per share data)   Self-storage and ancillary revenues $ 669,924 $ 685,528 $ 706,368 $ 692,460   Self-storage and ancillary cost of operations $ 192,827 $ 190,977 $ 195,544 $ 160,374   Depreciation and amortization $ 117,979 $ 119,777 $ 124,516 $ 121,374   Net Income $ 344,436 $ 405,292 $ 379,589 $ 587,906   Per Common Share  Net income - Basic $ 1.66 $ 2.00 $ 1.85 $ 3.05   Net income - Diluted $ 1.65 $ 2.00 $ 1.85 $ 3.04    Three Months Ended  March 31, June 30, September 30, December 31,  2017 2017 2017 2017  (Amounts in thousands, except per share data)   Self-storage and ancillary revenues $ 645,547 $ 664,312 $ 686,361 $ 672,308   Self-storage and ancillary cost of operations $ 182,902 $ 182,578 $ 190,619 $ 151,879   Depreciation and amortization $ 110,929 $ 110,177 $ 113,320 $ 120,100   Net Income $ 344,021 $ 355,207 $ 358,274 $ 390,963   Per Common Share  Net income - Basic $ 1.62 $ 1.59 $ 1.61 $ 1.92   Net income - Diluted $ 1.62 $ 1.59 $ 1.61 $ 1.92  

Description Of The Business (Na

Description Of The Business (Narrative) (Details)	12 Months Ended
	Dec. 31, 2018ft²statecountryitem	Oct. 15, 2018	Oct. 14, 2018	Dec. 31, 2017
Nature Of Business [Line Items]
Net rentable square feet	162,047
Public Storage [Member]
Nature Of Business [Line Items]
PSA self-storage facilities | item	2,429
Net rentable square feet	162,000,000
Number of states with facilities | state	38
Shurgard Europe [Member]
Nature Of Business [Line Items]
Net rentable square feet	13,000,000
Ownership interest, percentage	35.20%	35.20%	49.00%
Number of facilities owned by Shurgard Europe | item	232
Shurgard Europe [Member] | Western Europe [Member]
Nature Of Business [Line Items]
Direct interest in self-storage facilities, number of countries | country	7
PSB [Member]
Nature Of Business [Line Items]
Net rentable square feet	29,000,000
Number of states with facilities | state	7
Ownership interest, percentage	42.00%			42.00%

Summary Of Significant Accoun_4

Summary Of Significant Accounting Policies (Basis of Presentation and Consolidation And Equity Method Of Accounting) (Narrative) (Details) - U.S. [Member]	Dec. 31, 2018item
Summary Of Significant Accounting Policies [Line Items]
Owned self-storage facilities	2,429
Commercial facilities in U.S.	3

Summary Of Significant Accoun_5

Summary Of Significant Accounting Policies (Income Taxes and Real Estate Facilities) (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)
Unrecognized tax benefits	$ 0
Percentage of interest in real estate sold at fair value	100.00%
Maximum [Member]
Estimated useful lives of buildings and improvements	25 years
Minimum [Member]
Estimated useful lives of buildings and improvements	5 years

Summary Of Significant Accoun_6

Summary Of Significant Accounting Policies (Goodwill And Other Intangible Assets) (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Summary Of Significant Accounting Policies [Abstract]
Goodwill balance	$ 174.6	$ 174.6
Shurgard trade name, book value	18.8	18.8
In-place and leasehold interests in land, net book value	16.5	21.5
In-place and leasehold interests in land, accumulated amortization	29.6	31
In-place and leasehold interests in land, amortization expense	16.6	15	$ 21.7
Estimated future amortization expense, 2019	9.2
Estimated future amortization expense, 2020	2.5
Estimated future amortization expense, thereafter	4.8
Increase in in-place and leasehold interests in land	$ 11.6	$ 17.2	$ 23

Summary Of Significant Accoun_7

Summary Of Significant Accounting Policies (Evaluation Of Asset Impairment, Casualty Loss, Foreign Currency Exchange Translation, And Recent Accounting Pronouncements And Guidance) (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)$ / €	Dec. 31, 2017USD ($)$ / €	Dec. 31, 2016$ / €
Trading Activity, Gains and Losses, Net [Line Items]
Impairments	$ 0
Loss from Catastrophes		$ 7,789
Exchange rate | $ / €	1.144	1.198
Weighted Average [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Exchange rate | $ / €	1.181	1.129	1.107
Book Value of Assets Damaged [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Loss from Catastrophes		$ 3,300
Repairs And Maintenance [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Loss from Catastrophes		$ 4,500

Summary Of Significant Accoun_8

Summary Of Significant Accounting Policies (Net Income Per Common Share) (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Summary Of Significant Accounting Policies [Abstract]
Basic weighted average common shares outstanding	173,969	173,613	173,091
Net effect of dilutive stock options - based on treasury stock method	328	538	787
Diluted weighted average common shares outstanding	174,297	174,151	173,878

Real Estate Facilities (Narrati

Real Estate Facilities (Narrative) (Details) $ in Thousands	Oct. 25, 2018USD ($)	Oct. 18, 2018USD ($)	Dec. 31, 2017USD ($)ft²item	Dec. 31, 2018USD ($)ft²item	Dec. 31, 2017USD ($)ft²item	Dec. 31, 2016USD ($)ft²item
Schedule Of Real Estate Facilities [Line Items]
Net rentable square feet | ft²				162,047
Cash to acquire self-storage facilities				$ 181,020	$ 285,279	$ 416,178
Cash proceeds from sale of real estate facilities					6,400	300
Gain on sale of real estate				37,903	1,421	689
Transfer from (to) other assets				9,469		(8,129)
Allocated to other assets			$ 130,287	131,097	130,287
Real estate facilities for federal tax purposes				10,000,000
Development and Redevelopment [Member]
Schedule Of Real Estate Facilities [Line Items]
Aggregate costs to develop and expand				$ 348,300	$ 311,600	$ 268,900
Addtional net rentable square feet | ft²				3,000,000	2,700,000	2,275,000
Disposal Of Commercial Facility [Member]
Schedule Of Real Estate Facilities [Line Items]
Cash proceeds from sale of real estate facilities	$ 8,700
Gain on sale of real estate	$ 4,600
Disposal Of Real Estate Facilities [Member]
Schedule Of Real Estate Facilities [Line Items]
Cash proceeds from sale of real estate facilities				$ 3,400
Gain on sale of real estate				$ 1,800
Acquisition Of Self-Storage Facilities Other Investments [Member]
Schedule Of Real Estate Facilities [Line Items]
Number of operating self-storage facilities | item			12	25		55
Net rentable square feet | ft²			749,000	1,600,000		4,121,000
Cash to acquire self-storage facilities			$ 135,500	$ 181,000
Allocated to intangible assets			$ 9,000	$ 11,600	$ 9,000	$ 23,000
Cash proceeds from sale of real estate facilities						416,200
Ownership interest, percentage			74.25%		74.25%
Total cost of acquisition			$ 141,800			429,100
Value of existing investment			6,300
Allocated to other assets			300		$ 300
Mortgage debt assumed						$ 12,900
Acquisition Of Self-Storage Facilities From Third Parties [Member]
Schedule Of Real Estate Facilities [Line Items]
Number of operating self-storage facilities | item					22
Net rentable square feet | ft²					1,365,000
Cash to acquire self-storage facilities					$ 149,800
Allocated to intangible assets			$ 8,200		$ 8,200
West London [Member] | Disposal Of Real Estate [Member]
Schedule Of Real Estate Facilities [Line Items]
Cash proceeds from sale of real estate facilities		$ 42,100
Gain on sale of real estate		31,500
Cumulative other comprehensive loss, foreign currency translation		$ 4,800

Real Estate Facilities (Schedul

Real Estate Facilities (Schedule Of Real Estate Activities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Real Estate Facilities [Abstract]
Beginning balance (Operating facilities, at cost)	$ 14,665,989	$ 13,963,229	$ 13,205,261
Capital expenditures to maintain real estate facilities	139,397	124,780	86,047
Acquisitions	169,436	274,115	406,154
Dispositions	(25,633)	(1,092)
Assets damaged due to hurricanes		(8,226)
Developed or redeveloped facilities opened for operation	348,270	311,559	268,905
Impact of foreign exchange rate changes	(615)	1,624	(3,138)
Ending balance (Operating facilities, at cost)	15,296,844	14,665,989	13,963,229
Beginning balance, (Accumulated depreciation)	(5,700,331)	(5,270,963)	(4,866,738)
Depreciation expense	(457,029)	(433,466)	(406,046)
Dispositions	16,876	123
Assets damaged due to hurricanes		4,940
Impact of foreign exchange rate changes	412	(965)	1,821
Ending balance, (Accumulated depreciation)	(6,140,072)	(5,700,331)	(5,270,963)
Beginning Balance (Construction in process)	264,441	230,310	219,190
Current development	362,397	349,712	288,154
Developed or redeveloped facilities opened for operations	(348,270)	(311,559)	(268,905)
Dispositions	(2,698)	(4,022)
Transfer from (to) other assets	9,469		(8,129)
Ending Balance (Construction in process)	285,339	264,441	230,310
Total real estate facilities	$ 9,442,111	$ 9,230,099	$ 8,922,576

Investments In Unconsolidated_3

Investments In Unconsolidated Real Estate Entities (Investment in PSB) (Narrative) (Details) - PSB [Member] - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Ownership interest, percentage	42.00%	42.00%
Common stock owned of PSB	7,158,354
Limited partnership units in PSB	7,305,355
Closing price per share	$ 131
Market value	$ 1,900
Cash distribution received	55	$ 49.2	$ 43.4
Basis differential	7.4	10.9
Amortization of basis differential	$ 1.8	$ 1.3	$ 1.8

Investments In Unconsolidated_4

Investments In Unconsolidated Real Estate Entities (Investment In Shurgard Europe) (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)$ / €	Dec. 31, 2016USD ($)$ / €	Dec. 31, 2018€ / shares	Dec. 31, 2018USD ($)$ / €shares	Oct. 15, 2018€ / sharesshares	Oct. 14, 2018
Schedule of Equity Method Investments [Line Items]
Gain due to Shurgard Europe public offering	$ 151,616
Exchange rate | $ / €		1.198			1.144
Adjust for aggregate foreign currency exchange gain in equity in earnings of unconsolidated real estate entities			$ (941)
Shurgard Europe [Member]
Schedule of Equity Method Investments [Line Items]
Shares issued | shares						25,000,000
Price per share | € / shares						€ 23
Shares owned | shares					31,268,459
Ownership interest, percentage					35.20%	35.20%	49.00%
Increase in investment					$ 174,000
Reduction to other comprehensive loss, foreign currency translation	22,400
Closing price per share | € / shares				€ 24.25
Exchange rate | $ / €		1.198	1.052		1.144
Market value					$ 867,400
Cash distribution received	146,700	$ 1,300	$ 105,600
Distribution to shareholders	145,400		104,400
Change in investment from foreign currency exchange rates	(16,000)	$ 19,400	(24,100)
Shurgard Europe [Member] | Accumulated Comprehensive Income [Member]
Schedule of Equity Method Investments [Line Items]
Adjust for aggregate foreign currency exchange gain in equity in earnings of unconsolidated real estate entities			941
Shurgard Europe [Member] | Accumulated Distributions in Excess of Net Income [Member]
Schedule of Equity Method Investments [Line Items]
Cash distribution received	$ 91,900		$ 67,400

Investments In Unconsolidated_5

Investments In Unconsolidated Real Estate Entities (Other Investments) (Narrative) (Details) $ in Thousands	Dec. 31, 2017USD ($)item	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Cash to acquire self-storage facilities		$ 181,020	$ 285,279	$ 416,178
Other Investments [Member]
Ownership interest, percentage	74.25%		74.25%
Cash to acquire self-storage facilities	$ 135,500
Number of facilities owned | item	12

Investments In Unconsolidated_6

Investments In Unconsolidated Real Estate Entities (Schedule Of Investments In Real Estate Entities And Equity In Earnings Of Real Estate) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Schedule of Equity Method Investments [Line Items]
Investments in Unconsolidated Real Estate Entities	$ 783,988	$ 724,173
Equity in Earnings of Unconsolidated Real Estate Entities	103,495	75,655	$ 56,756
Other Investments [Member]
Schedule of Equity Method Investments [Line Items]
Equity in Earnings of Unconsolidated Real Estate Entities		3,163	2,725
PSB [Member]
Schedule of Equity Method Investments [Line Items]
Investments in Unconsolidated Real Estate Entities	434,533	400,133
Equity in Earnings of Unconsolidated Real Estate Entities	89,362	46,544	31,707
Shurgard Europe [Member]
Schedule of Equity Method Investments [Line Items]
Investments in Unconsolidated Real Estate Entities	349,455	324,040
Equity in Earnings of Unconsolidated Real Estate Entities	$ 14,133	$ 25,948	$ 22,324

Investments In Unconsolidated_7

Investments In Unconsolidated Real Estate Entities (Schedule Of Selected Financial Information) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)$ / €	Dec. 31, 2017USD ($)$ / €	Dec. 31, 2016USD ($)$ / €
Schedule of Equity Method Investments [Line Items]
Exchange rate of Euro to U.S. Dollar | $ / €	1.144	1.198
PSB [Member]
Schedule of Equity Method Investments [Line Items]
Self-storage and ancillary revenues	$ 413,516	$ 402,179	$ 386,871
Self-storage and ancillary cost of operations	(126,547)	(125,340)	(123,108)
Depreciation and amortization	(99,242)	(94,270)	(99,486)
General and administrative	(10,155)	(9,679)	(14,862)
Gain on sale of real estate investment sale	93,484	7,574
Other items, net	1,875	(1,148)	(4,431)
Net income before allocation to preferred shareholders and restricted share unitholders	272,931	179,316	144,984
Allocations to preferred shareholders and restricted share unitholders	(53,803)	(64,612)	(65,157)
Net income allocated to common shareholders and LP Unitholders	219,128	114,704	79,827
Total assets	2,068,594	2,100,159	2,119,371
Preferred stock called for redemption		130,000	230,000
Other liabilities	85,141	80,223	78,657
Preferred stock	959,750	959,750	879,750
Common equity and LP units	1,023,703	930,186	930,964
Shurgard Europe [Member]
Schedule of Equity Method Investments [Line Items]
Self-storage and ancillary revenues	284,992	265,088	252,321
Self-storage and ancillary cost of operations	(104,376)	(98,510)	(97,099)
Depreciation and amortization	(82,655)	(63,282)	(62,829)
General and administrative	(11,755)	(12,465)	(13,199)
Interest expense on third party debt	(22,749)	(20,759)	(20,617)
Trademark license fee payable to Public Storage	(2,852)	(2,647)	(2,531)
Income tax expense	(22,775)	(17,601)	(10,669)
Gain on sale of real estate investment sale	1,969
Other items, net	(14,726)	484	(2,348)
Net income	25,073	50,308	43,029
Total assets	1,736,654	1,416,477	1,261,912
Total debt to third parties	693,704	726,617	666,926
Other liabilities	143,963	143,638	106,916
Equity	$ 898,987	$ 546,222	$ 488,070
Exchange rate of Euro to U.S. Dollar | $ / €	1.144	1.198	1.052
Shurgard Europe [Member] | Fire [Member]
Schedule of Equity Method Investments [Line Items]
Other items, net	$ 7,300
Shurgard Europe [Member] | IPO [Member]
Schedule of Equity Method Investments [Line Items]
Other items, net	$ 5,500
Weighted Average [Member]
Schedule of Equity Method Investments [Line Items]
Exchange rate of Euro to U.S. Dollar | $ / €	1.181	1.129	1.107
Weighted Average [Member] | Shurgard Europe [Member]
Schedule of Equity Method Investments [Line Items]
Exchange rate of Euro to U.S. Dollar | $ / €	1.181	1.129	1.107

Credit Facility (Narrative) (De

Credit Facility (Narrative) (Details) - Credit Facility [Member] - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Feb. 27, 2019
Schedule Of Debt [Line Items]
Credit Facility borrowing capacity	$ 500,000,000
Expiration of Credit Facility	Mar. 31, 2020
Interest at period end spread (LIBOR)	0.85%
Frequency of commitment fee	quarterly
Commitment fee percentage	0.08%
Outstanding borrowings	$ 0
Reduction in borrowing capacity to amount of letters of credit	$ 16,200,000	$ 16,100,000
Minimum [Member]
Schedule Of Debt [Line Items]
Interest rate spread (LIBOR)	0.85%
Commitment fee percentage	0.08%
Maximum [Member]
Schedule Of Debt [Line Items]
Interest rate spread (LIBOR)	1.45%
Commitment fee percentage	0.25%
Subsequent Event [Member]
Schedule Of Debt [Line Items]
Outstanding borrowings			$ 0

Notes Payable (Narrative) (Deta

Notes Payable (Narrative) (Details)	Sep. 18, 2017USD ($)item	Apr. 12, 2016USD ($)	Nov. 03, 2015USD ($)	Dec. 31, 2018USD ($)item	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Apr. 12, 2016EUR (€)	Nov. 03, 2015EUR (€)
Debt Instrument [Line Items]
Proceeds from issuance of debt					$ 992,077,000	$ 113,620,000
Foreign currency exchange gain (loss)				$ 18,117,000	(50,045,000)	17,570,000
Cash paid for interest expense				36,300,000	16,800,000	9,400,000
Interest capitalized as real estate				$ 4,800,000	4,400,000	5,100,000
Mortgage Notes [Member]
Debt Instrument [Line Items]
Mortgage debt assumed						12,900,000
Interest rate				4.20%
Mortgage Notes [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest rate				3.20%
Maturity date				Nov. 1, 2022
Mortgage Notes [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest rate				7.10%
Maturity date				Sep. 30, 2028
Unsecured Debt [Member]
Debt Instrument [Line Items]
Foreign currency exchange gain (loss)				$ 18,100,000	$ (50,000,000)	$ 17,600,000
Unsecured Debt [Member] | U.S. Dollar Notes [Member]
Debt Instrument [Line Items]
Issuance date				Sep. 18, 2017
Number of tranches | item	2
Debt issuance amount	$ 500,000,000
Debt issuance costs	$ 7,900,000
Debt to Total Assets ratio				4.20%
Adjusted EBTIDA to interest Expense ratio				67.40
Unsecured Debt [Member] | U.S. Dollar Notes [Member] | Minimum [Member]
Debt Instrument [Line Items]
Adjusted EBTIDA to interest Expense ratio				1.50
Unsecured Debt [Member] | U.S. Dollar Notes [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt to Total Assets ratio				65.00%
Unsecured Debt [Member] | Euro Notes [Member]
Debt Instrument [Line Items]
Number of tranches | item				2
Unsecured Debt [Member] | Notes Due November 2025 [Member]
Debt Instrument [Line Items]
Issuance date				Nov. 3, 2015
Debt issuance amount | €								€ 242,000,000
Proceeds from issuance of debt			$ 264,300,000
Unsecured Debt [Member] | Notes Due April 2024 [Member]
Debt Instrument [Line Items]
Issuance date				Apr. 12, 2016
Debt issuance amount | €							€ 100,000,000
Proceeds from issuance of debt		$ 113,600,000

Notes Payable (Notes Payable) (

Notes Payable (Notes Payable) (Details)	12 Months Ended
	Dec. 31, 2018USD ($)item	Dec. 31, 2017USD ($)
Principal	$ 1,418,834,000
Unamortized Costs	(6,551,000)
Book Value	1,412,283,000	$ 1,431,322,000
Fair Value	1,380,727,000
U.S. Dollar Denominated Unsecured Debt [Member]
Principal	1,000,000,000
Unamortized Costs	(6,551,000)
Book Value	993,449,000	992,393,000
Fair Value	$ 951,072,000
U.S. Dollar Denominated Unsecured Debt [Member] | Notes Due September 2022 [Member]
Coupon Rate	2.37%
Effective Rate	2.483%
Principal	$ 500,000,000
Unamortized Costs	(1,947,000)
Book Value	498,053,000	497,525,000
Fair Value	$ 482,017,000
U.S. Dollar Denominated Unsecured Debt [Member] | Notes due, September 2027 [Member]
Coupon Rate	3.094%
Effective Rate	3.218%
Principal	$ 500,000,000
Unamortized Costs	(4,604,000)
Book Value	495,396,000	494,868,000
Fair Value	469,055,000
Euro Denominated Unsecured Debt [Member]
Principal	391,431,000
Book Value	391,431,000	409,716,000
Fair Value	$ 402,042,000
Euro Denominated Unsecured Debt [Member] | Notes Due April 2024 [Member]
Coupon Rate	1.54%
Effective Rate	1.54%
Principal	$ 114,449,000
Book Value	114,449,000	119,795,000
Fair Value	$ 115,964,000
Euro Denominated Unsecured Debt [Member] | Notes Due November 2025 [Member]
Coupon Rate	2.175%
Effective Rate	2.175%
Principal	$ 276,982,000
Book Value	276,982,000	289,921,000
Fair Value	$ 286,078,000
Mortgage Debt [Member]
Coupon Rate	4.09%
Effective Rate	4.045%
Principal	$ 27,403,000
Book Value	27,403,000	$ 29,213,000
Fair Value	27,613,000
Mortgage Debt [Member] | Secured By Real Estate Facilities [Member]
Net book value of real estate facilities securing notes payable	$ 111,000,000
Real estate facilities securing debt | item	30

Notes Payable (Maturities Of No

Notes Payable (Maturities Of Notes Payable) (Details) $ in Thousands	Dec. 31, 2018USD ($)
Debt Instrument [Line Items]
2,019	$ 1,867
2,020	1,958
2,021	1,836
2,022	502,522
2,023	19,161
Thereafter	891,490
Total debt	$ 1,418,834
Weighted average effective rate	2.60%
Unsecured Debt [Member]
Debt Instrument [Line Items]
2,022	$ 500,000
Thereafter	891,431
Total debt	$ 1,391,431
Weighted average effective rate	2.60%
Mortgage Notes [Member]
Debt Instrument [Line Items]
2,019	$ 1,867
2,020	1,958
2,021	1,836
2,022	2,522
2,023	19,161
Thereafter	59
Total debt	$ 27,403
Weighted average effective rate	4.00%

Noncontrolling Interests (Narra

Noncontrolling Interests (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)itemshares	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Noncontrolling Interest [Line Items]
Distributions paid	$ 7,022	$ 7,392	$ 7,586
Acquisition of noncontrolling interests		14,425
Contributions by noncontrolling interests	$ 1,720	2,484	3,470
Paid-In Capital [Member]
Noncontrolling Interest [Line Items]
Acquisition of noncontrolling interests		7,701
Noncontrolling Interests [Member]
Noncontrolling Interest [Line Items]
Permanent Noncontrolling Interest in Subsidiaries, number of self-storage facilities | item	17
Permanent Noncontrolling Interest in Subsidiaries, number of self-storage facilities under construction | item	5
Convertible partnership units | shares	231,978
Income allocated to other Permanent Noncontrolling Interest in Subsidiaries	$ 6,200	6,200	6,900
Distributions paid	7,022	7,392	7,586
Acquisition of noncontrolling interests		6,724
Contributions by noncontrolling interests	$ 1,720	$ 2,484	$ 3,470

Shareholders' Equity (Preferred

Shareholders' Equity (Preferred Shares) (Narrative) (Details) $ / shares in Units, $ in Thousands, shares in Millions	12 Months Ended
	Dec. 31, 2018USD ($)item$ / shares	Dec. 31, 2017USD ($)$ / sharesshares	Dec. 31, 2016USD ($)$ / sharesshares
Class of Stock [Line Items]
Number of additional board members the preferred shareholders can elect in the case of an excess arrearage of quarterly dividends | item	2
Preferred stock, amount of preferred dividends in arrears	$ 0
Preferred stock, redemption price per share | $ / shares	$ 25
EITF D-42 allocations		$ 29,330	$ 26,873
Series S and T Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, redemption amount		$ 922,500
Series F and G Preferred Stock [Member]
Class of Stock [Line Items]
Shares issued | shares		23.2
Preferred shares per depositary share		0.10%
Shares issued, price per share | $ / shares		$ 25
Gross proceeds from issuance of preferred stock		$ 580,000
Original issuance costs on preferred shares redeemed during the period		$ 18,800
Series Q and R Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, redemption amount			$ 862,500
Series B, Series C, Series D, and Series E Preferred Stock [Member]
Class of Stock [Line Items]
Shares issued | shares			47
Preferred shares per depositary share			0.10%
Shares issued, price per share | $ / shares			$ 25
Gross proceeds from issuance of preferred stock			$ 1,175,000
Original issuance costs on preferred shares redeemed during the period			$ 38,800

Shareholders' Equity (Common Sh

Shareholders' Equity (Common Shares) (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended			36 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2018
Shareholders’ Equity [Abstract]
Number of shares authorized for repurchase	35,000,000			35,000,000
Aggregate amount of shares repurchased pursuant to authorization	23,700,000
Shares repurchased pursuant to authorization		0	0	0
Common shares reserved in connection with share-based incentive plan	3,138,618	3,208,046		3,138,618
Common shares reserved for conversion of Convertable Partnership Units	231,978	231,978		231,978
Common shares and restricted shares, dividends	$ 1,396,364	$ 1,393,812	$ 1,267,544
Common shares and restricted shares, dividends per share	$ 8	$ 8	$ 7.30
Preferred shares, dividends	$ 216,316	$ 236,535	$ 238,214

Shareholders' Equity (Preferr_2

Shareholders' Equity (Preferred Shares Outstanding) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Class of Stock [Line Items]
Preferred stock, shares outstanding	161,000	161,000
Liquidation Preference	$ 4,025,000
Series U Preferred Stock [Member]
Class of Stock [Line Items]
Earliest Redemption Date	Jun. 15, 2017
Dividend Rate %	5.625%
Preferred stock, shares outstanding	11,500
Liquidation Preference	$ 287,500
Series V Preferred Stock [Member]
Class of Stock [Line Items]
Earliest Redemption Date	Sep. 20, 2017
Dividend Rate %	5.375%
Preferred stock, shares outstanding	19,800
Liquidation Preference	$ 495,000
Series W Preferred Stock [Member]
Class of Stock [Line Items]
Earliest Redemption Date	Jan. 16, 2018
Dividend Rate %	5.20%
Preferred stock, shares outstanding	20,000
Liquidation Preference	$ 500,000
Series X Preferred Stock [Member]
Class of Stock [Line Items]
Earliest Redemption Date	Mar. 13, 2018
Dividend Rate %	5.20%
Preferred stock, shares outstanding	9,000
Liquidation Preference	$ 225,000
Series Y Preferred Stock [Member]
Class of Stock [Line Items]
Earliest Redemption Date	Mar. 17, 2019
Dividend Rate %	6.375%
Preferred stock, shares outstanding	11,400
Liquidation Preference	$ 285,000
Series Z Preferred Stock [Member]
Class of Stock [Line Items]
Earliest Redemption Date	Jun. 4, 2019
Dividend Rate %	6.00%
Preferred stock, shares outstanding	11,500
Liquidation Preference	$ 287,500
Series A Preferred Stock [Member]
Class of Stock [Line Items]
Earliest Redemption Date	Dec. 2, 2019
Dividend Rate %	5.875%
Preferred stock, shares outstanding	7,600
Liquidation Preference	$ 190,000
Series B Preferred Stock [Member]
Class of Stock [Line Items]
Earliest Redemption Date	Jan. 20, 2021
Dividend Rate %	5.40%
Preferred stock, shares outstanding	12,000
Liquidation Preference	$ 300,000
Series C Preferred Stock [Member]
Class of Stock [Line Items]
Earliest Redemption Date	May 17, 2021
Dividend Rate %	5.125%
Preferred stock, shares outstanding	8,000
Liquidation Preference	$ 200,000
Series D Preferred Stock [Member]
Class of Stock [Line Items]
Earliest Redemption Date	Jul. 20, 2021
Dividend Rate %	4.95%
Preferred stock, shares outstanding	13,000
Liquidation Preference	$ 325,000
Series E Preferred Stock [Member]
Class of Stock [Line Items]
Earliest Redemption Date	Oct. 14, 2021
Dividend Rate %	4.90%
Preferred stock, shares outstanding	14,000
Liquidation Preference	$ 350,000
Series F Preferred Stock [Member]
Class of Stock [Line Items]
Earliest Redemption Date	Jun. 2, 2022
Dividend Rate %	5.15%
Preferred stock, shares outstanding	11,200
Liquidation Preference	$ 280,000
Series G Preferred Stock [Member]
Class of Stock [Line Items]
Earliest Redemption Date	Aug. 9, 2022
Dividend Rate %	5.05%
Preferred stock, shares outstanding	12,000
Liquidation Preference	$ 300,000

Shareholders' Equity (Schedule

Shareholders' Equity (Schedule Of Issuance And Repurchases Of Common Shares) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Shareholders’ Equity [Abstract]
Employee stock-based compensation and exercise of stock options (Note 10), Shares	277,511	564,583	367,546
Employee stock-based compensation and exercise of stock options (Note 10), Amount	$ 12,525	$ 42,500	$ 25,541

Shareholders' Equity (Schedul_2

Shareholders' Equity (Schedule Of Distribution Classification) (Details)	3 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018
Shareholders’ Equity [Abstract]
Ordinary Income	93.17%	100.00%	100.00%	100.00%
Long-Term Capital Gain	6.83%	0.00%	0.00%	0.00%
Total	100.00%	100.00%	100.00%	100.00%

Related Party Transactions (Nar

Related Party Transactions (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)item	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Related Party Transaction [Line Items]
Tenants reinsurance premiums earned by subsidiaries | $	$ 1,300	$ 1,100	$ 848
Hughes Family [Member]
Related Party Transaction [Line Items]
Percentage ownership of common shares outstanding	14.50%
Canada [Member] | Hughes Family [Member]
Related Party Transaction [Line Items]
Number of self-storage facilities | item	62
Ownership interest	0.00%

Share-Based Compensation (Stock

Share-Based Compensation (Stock Options) (Narrative) (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)employee$ / sharesshares	Dec. 31, 2017$ / sharesshares	Dec. 31, 2016$ / sharesshares	Dec. 31, 2015USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cumulative effect of a change in accounting principle | $				$ 789
Stock options outstanding | shares	2,420,922	2,408,917	1,995,440	1,940,279
Average exercise price | $ / shares	$ 201.31	$ 192.12	$ 150.83	$ 130.08
Stock options exercisable | shares	1,147,122	848,250	1,105,433
Exercisable, average exercise price per share | $ / shares	$ 178.31	$ 143.55	$ 108.84
Chief Executive Officer and Chief Financial Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of executives retiring | employee	2
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding, aggregate intrinsic value | $	$ 35,800
Average remaining contractual lives	6 years
Aggregate intrinsic value for stock options exercisable | $	$ 31,300
Stock options exercisable | shares	69,755
Expiration date	Jun. 30, 2020
Exercisable, average exercise price per share | $ / shares	$ 71.55
Maximum [Member] | Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, number of years	5 years
Minimum [Member] | Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, number of years	3 years
Exercise Price Above $200 [Member] | Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding | shares	1,351,000
Range of exercise prices, upper | $ / shares	$ 200

Share-Based Compensation (Restr

Share-Based Compensation (Restricted Share Units) (Narrative) (Details) - Restricted Share Units [Member] $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of restricted stock units outstanding	$ 145.3
Restricted stock, compensation expense not yet recognized	$ 91.1
Compensation recognition period	5 years 3 months 18 days
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, number of years	8 years
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, number of years	5 years

Share-Based Compensation (Share

Share-Based Compensation (Share-Based Compensation Options Outstanding Rollforward) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-Based Compensation [Abstract]
Options outstanding January 1, Number of Options	2,408,917	1,995,440	1,940,279
Granted, Number of Options	200,000	1,096,000	310,000
Exercised, Number of Options	(179,995)	(482,523)	(254,839)
Cancelled, Number of Options	(8,000)	(200,000)
Options outstanding December 31, Number of Options	2,420,922	2,408,917	1,995,440
Options exercisable at December 31, Number of Options	1,147,122	848,250	1,105,433
Options outstanding January 1, Weighted Average Exercise Price Per Share	$ 192.12	$ 150.83	$ 130.08
Granted, Weighted Average Exercise Price Per Share	194.29	223.58	239.11
Exercised. Weighted Average Exercise Price Per Share	69.53	88.07	100.23
Cancelled, Weighted Average Exercise Price Per Share	223.50	203.64
Options outstanding December 31, Weighted Average Exercise Price Per Share	201.31	192.12	150.83
Options exercisable at December 31, Weighted Average Exercise Price Per Share	$ 178.31	$ 143.55	$ 108.84

Share-Based Compensation (Sha_2

Share-Based Compensation (Share-Based Compensation Valuation Assumptions) (Details) - Stock Options [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option expense for the year	$ 17,162	$ 8,707	$ 5,180
Aggregate exercise date intrinsic value of options exercised during the year	$ 25,117	$ 61,334	$ 33,228
Expected life of options in years, based upon historical experience	5 years	5 years	5 years
Risk-free interest rate	2.70%	1.90%	1.20%
Expected volatility, based upon historical volatility	12.50%	17.90%	17.90%
Expected dividend yield	4.10%	3.60%	2.90%
Average estimated value of options granted during the year	$ 13.09	$ 23.49	$ 26.18
Acceleration	$ 8,100
Reduction in compensation expense resulting from forfeitures		$ 800

Share-Based Compensation (Sha_3

Share-Based Compensation (Share-Based Compensation Restricted Units) (Details) - Restricted Share Units [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted share units outstanding January 1, Number Of Restricted Share Units	799,129	696,641	737,388
Granted, Number Of Restricted Share Units	138,567	340,957	171,144
Vested, Number Of Restricted Share Units	(164,104)	(144,473)	(180,050)
Forfeited, Number Of Restricted Share Units	(55,896)	(93,996)	(31,841)
Restricted share units outstanding December 31, Number Of Restricted Share Units	717,696	799,129	696,641
Restricted share units outstanding January 1, Grant Date Aggregate Fair Value	$ 166,144	$ 136,905	$ 129,284
Granted, Grant Date Aggregate Fair Value	27,733	73,953	40,263
Vested, Grant Date Aggregate Fair Value	(30,717)	(25,305)	(26,689)
Forfeited, Grant Date Aggregate Fair Value	(11,948)	(19,409)	(5,953)
Restricted share units outstanding December 31, Grant Date Aggregate Fair Value	$ 151,212	$ 166,144	$ 136,905

Share-Based Compensation (Sha_4

Share-Based Compensation (Share-Based Compensation Shares Vesting During Year) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of vested shares on vesting date		$ 32,317	$ 31,962	$ 41,400
Cash paid for taxes upon vesting in lieu of issuing common shares		$ 12,347	$ 14,092	$ 15,357
Common shares issued upon vesting		97,516	82,060	112,707
Restricted share unit expense	[1]	$ 53,869	$ 28,841	$ 32,303
Restricted Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Taxes incurred upon vesting of restricted share units		1,100	700	$ 1,400
Reduction in compensation expense resulting from forfeitures			$ 4,600
Chief Executive Officer and Chief Financial Officer [Member] | Restricted Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Acceleration		$ 22,600
[1]	Amounts for 2018, 2017 and 2016 include approximately $1.1 million, $0.7 million and $1.4 million, respectively, in employer taxes incurred upon vesting.

Segment Information (Narrative)

Segment Information (Narrative) (Details)	Dec. 31, 2018	Dec. 31, 2017
PSB [Member]
Schedule of Equity Method Investments [Line Items]
Ownership interest, percentage	42.00%	42.00%

Segment Information (Summary Of

Segment Information (Summary Of Segment Information) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Total revenues	$ 692,460	$ 706,368	$ 685,528	$ 669,924	$ 672,308	$ 686,361	$ 664,312	$ 645,547	$ 2,754,280	$ 2,668,528	$ 2,560,549
Self-storage cost of operations									695,731	657,633	617,905
Ancillary cost of operations									43,991	50,345	51,178
Total cost of operations	160,374	195,544	190,977	192,827	151,879	190,619	182,578	182,902	739,722	707,978	669,083
Net Operating Income - Self-Storage Operations									1,901,876	1,854,800	1,787,923
Net Operating Income - Ancillary Operations									112,682	105,750	103,543
Total net operating income									2,014,558	1,960,550	1,891,466
Depreciation and amortization	(121,374)	(124,516)	(119,777)	(117,979)	(120,100)	(113,320)	(110,177)	(110,929)	(483,646)	(454,526)	(433,314)
General and administrative									(118,720)	(82,882)	(83,656)
Interest and other income									26,442	18,771	15,138
Interest expense									(32,542)	(12,690)	(4,210)
Equity in earnings of unconsolidated real estate entities									103,495	75,655	56,756
Foreign currency exchange gain (loss)									18,117	(50,045)	17,570
Casualty loss										(7,789)
Gain on sale of real estate									37,903	1,421	689
Gain due to Shurgard Europe public offering									151,616
Net income (loss)	$ 587,906	$ 379,589	$ 405,292	$ 344,436	$ 390,963	$ 358,274	$ 355,207	$ 344,021	1,717,223	1,448,465	1,460,439
Self-Storage Facilities [Member]
Segment Reporting Information [Line Items]
Total revenues									2,597,607	2,512,433	2,405,828
Self-storage cost of operations									695,731	657,633	617,905
Total cost of operations									695,731	657,633	617,905
Net Operating Income - Self-Storage Operations									1,901,876	1,854,800	1,787,923
Total net operating income									1,901,876	1,854,800	1,787,923
Depreciation and amortization									(483,646)	(454,526)	(433,314)
Net income (loss)									1,418,230	1,400,274	1,354,609
Ancillary Operations [Member]
Segment Reporting Information [Line Items]
Total revenues									156,673	156,095	154,721
Ancillary cost of operations									43,991	50,345	51,178
Total cost of operations									43,991	50,345	51,178
Net Operating Income - Ancillary Operations									112,682	105,750	103,543
Total net operating income									112,682	105,750	103,543
Net income (loss)									112,682	105,750	103,543
Invesment in PSB [Member]
Segment Reporting Information [Line Items]
Equity in earnings of unconsolidated real estate entities									89,362	46,544	31,707
Net income (loss)									89,362	46,544	31,707
Investment In Shurgard Europe [Member]
Segment Reporting Information [Line Items]
Equity in earnings of unconsolidated real estate entities									14,133	25,948	22,324
Gain due to Shurgard Europe public offering									151,616
Net income (loss)									165,749	25,948	22,324
Other Items Not Allocated To Segments [Member]
Segment Reporting Information [Line Items]
General and administrative									(118,720)	(82,882)	(83,656)
Interest and other income									26,442	18,771	15,138
Interest expense									(32,542)	(12,690)	(4,210)
Equity in earnings of unconsolidated real estate entities										3,163	2,725
Foreign currency exchange gain (loss)									18,117	(50,045)	17,570
Casualty loss										(7,789)
Gain on sale of real estate									37,903	1,421	689
Net income (loss)									(68,800)	(130,051)	(51,744)
Self-Storage Facilities [Member]
Segment Reporting Information [Line Items]
Total revenues									2,597,607	2,512,433	2,405,828
Self-Storage Facilities [Member] | Self-Storage Facilities [Member]
Segment Reporting Information [Line Items]
Total revenues									2,597,607	2,512,433	2,405,828
Ancillary Operations [Member]
Segment Reporting Information [Line Items]
Total revenues									156,673	156,095	154,721
Ancillary Operations [Member] | Ancillary Operations [Member]
Segment Reporting Information [Line Items]
Total revenues									$ 156,673	$ 156,095	$ 154,721

Commitments And Contingencies (

Commitments And Contingencies (Narrative) (Details)	12 Months Ended
	Dec. 31, 2018USD ($)item
Commitments And Contingencies [Abstract]
Deductible for general liability	$ 2,000,000
Deductible for property	25,000,000
Aggregate maximum losses for property	35,000,000
Aggregate per occurance property coverage	5,000,000
Reduced deductible for property	5,000,000
Aggregate limit for property coverage	75,000,000
Aggregate limit for general liability coverage	102,000,000
Tenant insurance program against claims, maximum amount	5,000
Third-party insurance coverage for claims paid exceeding amount for individual event	15,000,000
Third-party limit for insurance coverage claims paid for individual event	$ 5,000,000
Tenant certificate holders participating in insurance program, approximate | item	914,000
Aggregate coverage of tenants participating in insurance program	$ 2,900,000,000
Construction commitments	138,500,000
Construction commitments 2019	126,300,000
Construction commitments 2020	$ 12,200,000

Supplementary Quarterly Finan_3

Supplementary Quarterly Financial Data (Supplementary Quarterly Financial Data) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Supplementary Quarterly Financial Data [Abstract]
Self-storage and ancillary revenues	$ 692,460	$ 706,368	$ 685,528	$ 669,924	$ 672,308	$ 686,361	$ 664,312	$ 645,547	$ 2,754,280	$ 2,668,528	$ 2,560,549
Self storage and ancillary cost of operations	160,374	195,544	190,977	192,827	151,879	190,619	182,578	182,902	739,722	707,978	669,083
Depreciation and amortization	121,374	124,516	119,777	117,979	120,100	113,320	110,177	110,929	483,646	454,526	433,314
Net income	$ 587,906	$ 379,589	$ 405,292	$ 344,436	$ 390,963	$ 358,274	$ 355,207	$ 344,021	$ 1,717,223	$ 1,448,465	$ 1,460,439
Net income - Basic	$ 3.05	$ 1.85	$ 2	$ 1.66	$ 1.92	$ 1.61	$ 1.59	$ 1.62	$ 8.56	$ 6.75	$ 6.84
Net income - Diluted	$ 3.04	$ 1.85	$ 2	$ 1.65	$ 1.92	$ 1.61	$ 1.59	$ 1.62	$ 8.54	$ 6.73	$ 6.81

Subsequent Events (Narrative) (

Subsequent Events (Narrative) (Details) $ in Thousands	2 Months Ended	3 Months Ended	12 Months Ended
	Feb. 26, 2019USD ($)ft²item	Mar. 31, 2019USD ($)	Dec. 31, 2018ft²	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Mar. 28, 2019USD ($)
Subsequent Event [Line Items]
Net rentable square feet | ft²			162,047
Income reclassified from common to preferred | $				$ 29,330	$ 26,873
Subsequent Event [Member]
Subsequent Event [Line Items]
Number of self-storage facilities acquired or under contract to be acquired	14
Net rentable square feet | ft²	935,000
Total cost of acquisition | $	$ 102,400
Virginia [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Number of self-storage facilities acquired or under contract to be acquired	9
Colorado [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Number of self-storage facilities acquired or under contract to be acquired	1
Florida [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Number of self-storage facilities acquired or under contract to be acquired	1
Georgia [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Number of self-storage facilities acquired or under contract to be acquired	1
Kentucky [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Number of self-storage facilities acquired or under contract to be acquired	1
Michigan [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Number of self-storage facilities acquired or under contract to be acquired	1
Series Y Preferred Stock [Member]
Subsequent Event [Line Items]
Dividend Rate %			6.375%
Series Y Preferred Stock [Member] | Forecasted [Member]
Subsequent Event [Line Items]
Preferred stock, redemption amount | $						$ 285,000
Income reclassified from common to preferred | $		$ 8,500

Schedule III - Real Estate An_2

Schedule III - Real Estate And Accumulated Depreciation (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)ft²item
Real Estate and Accumulated Depreciation [Line Items]
No. of Facilities | item	2,429
Net Rentable Square Feet | ft²	162,047
2018 Encumbrances	$ 27,403
Initial Cost, Land	3,987,212
Initial Cost, Buildings & Improvements	8,842,668
Costs Subsequent to Acquisition	2,466,964
Gross Carrying Amount, Land	4,047,982
Gross Carrying Amount, Buildings	11,248,862
Gross Carrying Amount, Total	15,296,844
Accumulated Depreciation	$ 6,140,072
Commercial and Non-Operating Real Estate [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	real estate
Initial Cost, Land	$ 9,615
Initial Cost, Buildings & Improvements	22,472
Costs Subsequent to Acquisition	24,155
Gross Carrying Amount, Land	10,651
Gross Carrying Amount, Buildings	45,591
Gross Carrying Amount, Total	56,242
Accumulated Depreciation	$ 39,095
Los Angeles [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Los Angeles
No. of Facilities | item	224
Net Rentable Square Feet | ft²	16,086
2018 Encumbrances	$ 538
Initial Cost, Land	510,249
Initial Cost, Buildings & Improvements	924,346
Costs Subsequent to Acquisition	296,987
Gross Carrying Amount, Land	507,862
Gross Carrying Amount, Buildings	1,223,720
Gross Carrying Amount, Total	1,731,582
Accumulated Depreciation	$ 686,584
Houston [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Houston
No. of Facilities | item	123
Net Rentable Square Feet | ft²	9,093
Initial Cost, Land	$ 177,951
Initial Cost, Buildings & Improvements	443,126
Costs Subsequent to Acquisition	142,048
Gross Carrying Amount, Land	177,412
Gross Carrying Amount, Buildings	585,713
Gross Carrying Amount, Total	763,125
Accumulated Depreciation	$ 261,800
San Francisco [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	San Francisco
No. of Facilities | item	138
Net Rentable Square Feet | ft²	8,952
Initial Cost, Land	$ 241,791
Initial Cost, Buildings & Improvements	527,127
Costs Subsequent to Acquisition	190,078
Gross Carrying Amount, Land	254,541
Gross Carrying Amount, Buildings	704,455
Gross Carrying Amount, Total	958,996
Accumulated Depreciation	$ 426,169
Dallas/Ft. Worth [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Dallas/Ft. Worth
No. of Facilities | item	122
Net Rentable Square Feet | ft²	8,760
Initial Cost, Land	$ 173,223
Initial Cost, Buildings & Improvements	414,707
Costs Subsequent to Acquisition	118,863
Gross Carrying Amount, Land	174,821
Gross Carrying Amount, Buildings	531,972
Gross Carrying Amount, Total	706,793
Accumulated Depreciation	$ 257,203
Chicago [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Chicago
No. of Facilities | item	130
Net Rentable Square Feet | ft²	8,172
Initial Cost, Land	$ 137,165
Initial Cost, Buildings & Improvements	352,595
Costs Subsequent to Acquisition	122,609
Gross Carrying Amount, Land	140,002
Gross Carrying Amount, Buildings	472,367
Gross Carrying Amount, Total	612,369
Accumulated Depreciation	$ 340,765
New York [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	New York
No. of Facilities | item	94
Net Rentable Square Feet | ft²	6,940
Initial Cost, Land	$ 250,900
Initial Cost, Buildings & Improvements	548,541
Costs Subsequent to Acquisition	166,300
Gross Carrying Amount, Land	257,237
Gross Carrying Amount, Buildings	708,504
Gross Carrying Amount, Total	965,741
Accumulated Depreciation	$ 386,344
Atlanta [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Atlanta
No. of Facilities | item	103
Net Rentable Square Feet | ft²	6,749
Initial Cost, Land	$ 129,671
Initial Cost, Buildings & Improvements	341,153
Costs Subsequent to Acquisition	67,847
Gross Carrying Amount, Land	129,468
Gross Carrying Amount, Buildings	409,203
Gross Carrying Amount, Total	538,671
Accumulated Depreciation	$ 243,122
Seattle/Tacoma [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Seattle/Tacoma
No. of Facilities | item	93
Net Rentable Square Feet | ft²	6,424
Initial Cost, Land	$ 183,213
Initial Cost, Buildings & Improvements	466,998
Costs Subsequent to Acquisition	95,459
Gross Carrying Amount, Land	182,225
Gross Carrying Amount, Buildings	563,445
Gross Carrying Amount, Total	745,670
Accumulated Depreciation	$ 301,030
Miami [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Miami
No. of Facilities | item	90
Net Rentable Square Feet | ft²	6,416
Initial Cost, Land	$ 215,278
Initial Cost, Buildings & Improvements	461,099
Costs Subsequent to Acquisition	87,470
Gross Carrying Amount, Land	217,170
Gross Carrying Amount, Buildings	546,677
Gross Carrying Amount, Total	763,847
Accumulated Depreciation	$ 284,258
Washington DC [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Washington DC
No. of Facilities | item	91
Net Rentable Square Feet | ft²	5,648
Initial Cost, Land	$ 233,905
Initial Cost, Buildings & Improvements	406,769
Costs Subsequent to Acquisition	112,017
Gross Carrying Amount, Land	239,100
Gross Carrying Amount, Buildings	513,591
Gross Carrying Amount, Total	752,691
Accumulated Depreciation	$ 285,899
Orlando/Daytona [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Orlando/Daytona
No. of Facilities | item	72
Net Rentable Square Feet | ft²	4,550
2018 Encumbrances	$ 12,174
Initial Cost, Land	140,411
Initial Cost, Buildings & Improvements	253,375
Costs Subsequent to Acquisition	55,715
Gross Carrying Amount, Land	145,892
Gross Carrying Amount, Buildings	303,609
Gross Carrying Amount, Total	449,501
Accumulated Depreciation	$ 141,198
Denver [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Denver
No. of Facilities | item	61
Net Rentable Square Feet | ft²	4,295
2018 Encumbrances	$ 9,661
Initial Cost, Land	95,009
Initial Cost, Buildings & Improvements	226,499
Costs Subsequent to Acquisition	65,256
Gross Carrying Amount, Land	95,738
Gross Carrying Amount, Buildings	291,026
Gross Carrying Amount, Total	386,764
Accumulated Depreciation	$ 131,592
Charlotte [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Charlotte
No. of Facilities | item	54
Net Rentable Square Feet | ft²	4,056
Initial Cost, Land	$ 77,016
Initial Cost, Buildings & Improvements	194,846
Costs Subsequent to Acquisition	54,628
Gross Carrying Amount, Land	84,879
Gross Carrying Amount, Buildings	241,611
Gross Carrying Amount, Total	326,490
Accumulated Depreciation	$ 107,397
Minneapolis/St. Paul [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Minneapolis/St. Paul
No. of Facilities | item	54
Net Rentable Square Feet | ft²	3,690
2018 Encumbrances	$ 3,931
Initial Cost, Land	107,071
Initial Cost, Buildings & Improvements	211,200
Costs Subsequent to Acquisition	25,259
Gross Carrying Amount, Land	107,236
Gross Carrying Amount, Buildings	236,294
Gross Carrying Amount, Total	343,530
Accumulated Depreciation	$ 106,371
Tampa [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Tampa
No. of Facilities | item	53
Net Rentable Square Feet | ft²	3,613
Initial Cost, Land	$ 87,165
Initial Cost, Buildings & Improvements	174,499
Costs Subsequent to Acquisition	46,672
Gross Carrying Amount, Land	89,927
Gross Carrying Amount, Buildings	218,409
Gross Carrying Amount, Total	308,336
Accumulated Depreciation	$ 113,117
Philadelphia [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Philadelphia
No. of Facilities | item	57
Net Rentable Square Feet | ft²	3,582
Initial Cost, Land	$ 51,682
Initial Cost, Buildings & Improvements	152,406
Costs Subsequent to Acquisition	55,037
Gross Carrying Amount, Land	50,703
Gross Carrying Amount, Buildings	208,422
Gross Carrying Amount, Total	259,125
Accumulated Depreciation	$ 152,874
West Palm Beach [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	West Palm Beach
No. of Facilities | item	45
Net Rentable Square Feet | ft²	3,398
Initial Cost, Land	$ 153,414
Initial Cost, Buildings & Improvements	216,913
Costs Subsequent to Acquisition	48,466
Gross Carrying Amount, Land	154,122
Gross Carrying Amount, Buildings	264,671
Gross Carrying Amount, Total	418,793
Accumulated Depreciation	$ 109,277
Detroit [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Detroit
No. of Facilities | item	41
Net Rentable Square Feet | ft²	2,795
Initial Cost, Land	$ 62,990
Initial Cost, Buildings & Improvements	159,461
Costs Subsequent to Acquisition	28,972
Gross Carrying Amount, Land	63,840
Gross Carrying Amount, Buildings	187,583
Gross Carrying Amount, Total	251,423
Accumulated Depreciation	$ 103,405
Phoenix [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Phoenix
No. of Facilities | item	38
Net Rentable Square Feet | ft²	2,536
Initial Cost, Land	$ 60,974
Initial Cost, Buildings & Improvements	169,042
Costs Subsequent to Acquisition	25,757
Gross Carrying Amount, Land	60,965
Gross Carrying Amount, Buildings	194,808
Gross Carrying Amount, Total	255,773
Accumulated Depreciation	$ 94,513
Austin [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Austin
No. of Facilities | item	31
Net Rentable Square Feet | ft²	2,343
Initial Cost, Land	$ 51,150
Initial Cost, Buildings & Improvements	115,641
Costs Subsequent to Acquisition	39,486
Gross Carrying Amount, Land	53,172
Gross Carrying Amount, Buildings	153,105
Gross Carrying Amount, Total	206,277
Accumulated Depreciation	$ 76,208
Portland [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Portland
No. of Facilities | item	43
Net Rentable Square Feet | ft²	2,256
Initial Cost, Land	$ 51,182
Initial Cost, Buildings & Improvements	126,464
Costs Subsequent to Acquisition	26,792
Gross Carrying Amount, Land	51,840
Gross Carrying Amount, Buildings	152,598
Gross Carrying Amount, Total	204,438
Accumulated Depreciation	$ 95,235
Sacramento [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Sacramento
No. of Facilities | item	34
Net Rentable Square Feet | ft²	1,959
Initial Cost, Land	$ 25,141
Initial Cost, Buildings & Improvements	69,409
Costs Subsequent to Acquisition	27,711
Gross Carrying Amount, Land	25,646
Gross Carrying Amount, Buildings	96,615
Gross Carrying Amount, Total	122,261
Accumulated Depreciation	$ 72,863
Raleigh [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Raleigh
No. of Facilities | item	28
Net Rentable Square Feet | ft²	1,882
Initial Cost, Land	$ 50,348
Initial Cost, Buildings & Improvements	99,583
Costs Subsequent to Acquisition	28,318
Gross Carrying Amount, Land	51,479
Gross Carrying Amount, Buildings	126,770
Gross Carrying Amount, Total	178,249
Accumulated Depreciation	$ 54,523
San Diego [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	San Diego
No. of Facilities | item	20
Net Rentable Square Feet | ft²	1,815
Initial Cost, Land	$ 47,884
Initial Cost, Buildings & Improvements	108,911
Costs Subsequent to Acquisition	39,142
Gross Carrying Amount, Land	50,394
Gross Carrying Amount, Buildings	145,543
Gross Carrying Amount, Total	195,937
Accumulated Depreciation	$ 80,945
San Antonio [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	San Antonio
No. of Facilities | item	28
Net Rentable Square Feet | ft²	1,791
Initial Cost, Land	$ 27,566
Initial Cost, Buildings & Improvements	76,028
Costs Subsequent to Acquisition	26,691
Gross Carrying Amount, Land	27,524
Gross Carrying Amount, Buildings	102,761
Gross Carrying Amount, Total	130,285
Accumulated Depreciation	$ 62,052
Norfolk [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Norfolk
No. of Facilities | item	29
Net Rentable Square Feet | ft²	1,727
Initial Cost, Land	$ 35,608
Initial Cost, Buildings & Improvements	92,053
Costs Subsequent to Acquisition	17,323
Gross Carrying Amount, Land	35,047
Gross Carrying Amount, Buildings	109,937
Gross Carrying Amount, Total	144,984
Accumulated Depreciation	$ 57,997
Boston [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Boston
No. of Facilities | item	25
Net Rentable Square Feet | ft²	1,679
Initial Cost, Land	$ 61,583
Initial Cost, Buildings & Improvements	158,870
Costs Subsequent to Acquisition	21,353
Gross Carrying Amount, Land	62,149
Gross Carrying Amount, Buildings	179,657
Gross Carrying Amount, Total	241,806
Accumulated Depreciation	$ 83,539
Columbus [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Columbus
No. of Facilities | item	22
Net Rentable Square Feet | ft²	1,629
Initial Cost, Land	$ 25,341
Initial Cost, Buildings & Improvements	64,746
Costs Subsequent to Acquisition	26,791
Gross Carrying Amount, Land	25,448
Gross Carrying Amount, Buildings	91,430
Gross Carrying Amount, Total	116,878
Accumulated Depreciation	$ 41,711
Oaklahoma City [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Oklahoma City
No. of Facilities | item	22
Net Rentable Square Feet | ft²	1,533
Initial Cost, Land	$ 35,704
Initial Cost, Buildings & Improvements	68,360
Costs Subsequent to Acquisition	12,840
Gross Carrying Amount, Land	35,704
Gross Carrying Amount, Buildings	81,200
Gross Carrying Amount, Total	116,904
Accumulated Depreciation	$ 19,843
Baltimore [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Baltimore
No. of Facilities | item	23
Net Rentable Square Feet | ft²	1,472
Initial Cost, Land	$ 25,176
Initial Cost, Buildings & Improvements	79,734
Costs Subsequent to Acquisition	18,139
Gross Carrying Amount, Land	25,300
Gross Carrying Amount, Buildings	97,749
Gross Carrying Amount, Total	123,049
Accumulated Depreciation	$ 66,565
Indianapolis [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Indianapolis
No. of Facilities | item	23
Net Rentable Square Feet | ft²	1,472
Initial Cost, Land	$ 21,945
Initial Cost, Buildings & Improvements	60,353
Costs Subsequent to Acquisition	12,874
Gross Carrying Amount, Land	22,945
Gross Carrying Amount, Buildings	72,227
Gross Carrying Amount, Total	95,172
Accumulated Depreciation	$ 42,326
St. Louis [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	St. Louis
No. of Facilities | item	26
Net Rentable Square Feet | ft²	1,464
Initial Cost, Land	$ 20,037
Initial Cost, Buildings & Improvements	56,237
Costs Subsequent to Acquisition	21,401
Gross Carrying Amount, Land	20,680
Gross Carrying Amount, Buildings	76,995
Gross Carrying Amount, Total	97,675
Accumulated Depreciation	$ 60,081
Kansas City [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Kansas City
No. of Facilities | item	24
Net Rentable Square Feet | ft²	1,461
Initial Cost, Land	$ 14,225
Initial Cost, Buildings & Improvements	43,732
Costs Subsequent to Acquisition	27,046
Gross Carrying Amount, Land	14,425
Gross Carrying Amount, Buildings	70,578
Gross Carrying Amount, Total	85,003
Accumulated Depreciation	$ 57,162
Columbia [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Columbia
No. of Facilities | item	23
Net Rentable Square Feet | ft²	1,331
Initial Cost, Land	$ 20,169
Initial Cost, Buildings & Improvements	57,131
Costs Subsequent to Acquisition	19,062
Gross Carrying Amount, Land	20,928
Gross Carrying Amount, Buildings	75,434
Gross Carrying Amount, Total	96,362
Accumulated Depreciation	$ 31,667
Las Vegas [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Las Vegas
No. of Facilities | item	20
Net Rentable Square Feet | ft²	1,259
Initial Cost, Land	$ 23,168
Initial Cost, Buildings & Improvements	52,723
Costs Subsequent to Acquisition	10,024
Gross Carrying Amount, Land	22,417
Gross Carrying Amount, Buildings	63,498
Gross Carrying Amount, Total	85,915
Accumulated Depreciation	$ 46,030
Milwaukee [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Milwaukee
No. of Facilities | item	15
Net Rentable Square Feet | ft²	964
2018 Encumbrances	$ 1,099
Initial Cost, Land	13,189
Initial Cost, Buildings & Improvements	32,071
Costs Subsequent to Acquisition	9,958
Gross Carrying Amount, Land	13,158
Gross Carrying Amount, Buildings	42,060
Gross Carrying Amount, Total	55,218
Accumulated Depreciation	$ 31,402
Cincinnati [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Cincinnati
No. of Facilities | item	17
Net Rentable Square Feet | ft²	947
Initial Cost, Land	$ 15,023
Initial Cost, Buildings & Improvements	32,351
Costs Subsequent to Acquisition	22,398
Gross Carrying Amount, Land	14,941
Gross Carrying Amount, Buildings	54,831
Gross Carrying Amount, Total	69,772
Accumulated Depreciation	$ 27,878
Louisville [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Louisville
No. of Facilities | item	14
Net Rentable Square Feet | ft²	875
Initial Cost, Land	$ 22,813
Initial Cost, Buildings & Improvements	43,250
Costs Subsequent to Acquisition	6,390
Gross Carrying Amount, Land	22,812
Gross Carrying Amount, Buildings	49,641
Gross Carrying Amount, Total	72,453
Accumulated Depreciation	$ 11,155
Jacksonville [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Jacksonville
No. of Facilities | item	14
Net Rentable Square Feet | ft²	841
Initial Cost, Land	$ 11,252
Initial Cost, Buildings & Improvements	27,714
Costs Subsequent to Acquisition	11,197
Gross Carrying Amount, Land	11,301
Gross Carrying Amount, Buildings	38,862
Gross Carrying Amount, Total	50,163
Accumulated Depreciation	$ 30,515
Nashville/Bowling Green [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Nashville/Bowling Green
No. of Facilities | item	16
Net Rentable Square Feet | ft²	835
Initial Cost, Land	$ 12,744
Initial Cost, Buildings & Improvements	29,420
Costs Subsequent to Acquisition	10,330
Gross Carrying Amount, Land	12,742
Gross Carrying Amount, Buildings	39,752
Gross Carrying Amount, Total	52,494
Accumulated Depreciation	$ 26,255
Honolulu [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Honolulu
No. of Facilities | item	11
Net Rentable Square Feet | ft²	807
Initial Cost, Land	$ 54,184
Initial Cost, Buildings & Improvements	106,299
Costs Subsequent to Acquisition	11,378
Gross Carrying Amount, Land	55,101
Gross Carrying Amount, Buildings	116,760
Gross Carrying Amount, Total	171,861
Accumulated Depreciation	$ 58,488
Greensboro [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Greensboro
No. of Facilities | item	13
Net Rentable Square Feet | ft²	787
Initial Cost, Land	$ 12,737
Initial Cost, Buildings & Improvements	29,811
Costs Subsequent to Acquisition	13,032
Gross Carrying Amount, Land	14,826
Gross Carrying Amount, Buildings	40,754
Gross Carrying Amount, Total	55,580
Accumulated Depreciation	$ 24,203
Colorado Springs [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Colorado Springs
No. of Facilities | item	12
Net Rentable Square Feet | ft²	706
Initial Cost, Land	$ 8,229
Initial Cost, Buildings & Improvements	19,659
Costs Subsequent to Acquisition	12,877
Gross Carrying Amount, Land	8,225
Gross Carrying Amount, Buildings	32,540
Gross Carrying Amount, Total	40,765
Accumulated Depreciation	$ 26,212
Chattanooga [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Chattanooga
No. of Facilities | item	10
Net Rentable Square Feet | ft²	706
Initial Cost, Land	$ 6,569
Initial Cost, Buildings & Improvements	26,045
Costs Subsequent to Acquisition	6,682
Gross Carrying Amount, Land	6,371
Gross Carrying Amount, Buildings	32,925
Gross Carrying Amount, Total	39,296
Accumulated Depreciation	$ 13,385
Hartford/New Haven [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Hartford/New Haven
No. of Facilities | item	11
Net Rentable Square Feet | ft²	693
Initial Cost, Land	$ 6,778
Initial Cost, Buildings & Improvements	19,959
Costs Subsequent to Acquisition	21,307
Gross Carrying Amount, Land	8,443
Gross Carrying Amount, Buildings	39,601
Gross Carrying Amount, Total	48,044
Accumulated Depreciation	$ 30,275
Savannah [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Savannah
No. of Facilities | item	12
Net Rentable Square Feet | ft²	690
Initial Cost, Land	$ 33,094
Initial Cost, Buildings & Improvements	42,465
Costs Subsequent to Acquisition	2,267
Gross Carrying Amount, Land	31,766
Gross Carrying Amount, Buildings	46,060
Gross Carrying Amount, Total	77,826
Accumulated Depreciation	$ 13,779
Charleston [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Charleston
No. of Facilities | item	11
Net Rentable Square Feet | ft²	681
Initial Cost, Land	$ 12,415
Initial Cost, Buildings & Improvements	34,114
Costs Subsequent to Acquisition	16,528
Gross Carrying Amount, Land	13,391
Gross Carrying Amount, Buildings	49,666
Gross Carrying Amount, Total	63,057
Accumulated Depreciation	$ 21,688
Fort Myers/Naples [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Fort Myers/Naples
No. of Facilities | item	9
Net Rentable Square Feet | ft²	670
Initial Cost, Land	$ 15,373
Initial Cost, Buildings & Improvements	35,353
Costs Subsequent to Acquisition	4,945
Gross Carrying Amount, Land	15,608
Gross Carrying Amount, Buildings	40,063
Gross Carrying Amount, Total	55,671
Accumulated Depreciation	$ 15,558
New Orleans [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	New Orleans
No. of Facilities | item	9
Net Rentable Square Feet | ft²	627
Initial Cost, Land	$ 9,205
Initial Cost, Buildings & Improvements	30,832
Costs Subsequent to Acquisition	5,871
Gross Carrying Amount, Land	9,373
Gross Carrying Amount, Buildings	36,535
Gross Carrying Amount, Total	45,908
Accumulated Depreciation	$ 23,480
Greensville/Spartanburg/Asheville [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Greensville/Spartanburg/Asheville
No. of Facilities | item	11
Net Rentable Square Feet | ft²	623
Initial Cost, Land	$ 9,036
Initial Cost, Buildings & Improvements	20,767
Costs Subsequent to Acquisition	9,349
Gross Carrying Amount, Land	9,965
Gross Carrying Amount, Buildings	29,187
Gross Carrying Amount, Total	39,152
Accumulated Depreciation	$ 18,918
Reno [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Reno
No. of Facilities | item	7
Net Rentable Square Feet | ft²	559
Initial Cost, Land	$ 5,487
Initial Cost, Buildings & Improvements	18,704
Costs Subsequent to Acquisition	3,987
Gross Carrying Amount, Land	5,487
Gross Carrying Amount, Buildings	22,691
Gross Carrying Amount, Total	28,178
Accumulated Depreciation	$ 11,189
Birmingham [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Birmingham
No. of Facilities | item	14
Net Rentable Square Feet | ft²	538
Initial Cost, Land	$ 5,229
Initial Cost, Buildings & Improvements	17,835
Costs Subsequent to Acquisition	13,238
Gross Carrying Amount, Land	5,117
Gross Carrying Amount, Buildings	31,185
Gross Carrying Amount, Total	36,302
Accumulated Depreciation	$ 26,512
Salt Lake City [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Salt Lake City
No. of Facilities | item	8
Net Rentable Square Feet | ft²	517
Initial Cost, Land	$ 7,846
Initial Cost, Buildings & Improvements	15,947
Costs Subsequent to Acquisition	4,625
Gross Carrying Amount, Land	7,495
Gross Carrying Amount, Buildings	20,923
Gross Carrying Amount, Total	28,418
Accumulated Depreciation	$ 13,744
Memphis [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Memphis
No. of Facilities | item	9
Net Rentable Square Feet | ft²	510
Initial Cost, Land	$ 7,962
Initial Cost, Buildings & Improvements	21,981
Costs Subsequent to Acquisition	8,784
Gross Carrying Amount, Land	9,315
Gross Carrying Amount, Buildings	29,412
Gross Carrying Amount, Total	38,727
Accumulated Depreciation	$ 19,019
Buffalo/Rochester [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Buffalo/Rochester
No. of Facilities | item	9
Net Rentable Square Feet | ft²	462
Initial Cost, Land	$ 6,785
Initial Cost, Buildings & Improvements	17,954
Costs Subsequent to Acquisition	3,617
Gross Carrying Amount, Land	6,783
Gross Carrying Amount, Buildings	21,573
Gross Carrying Amount, Total	28,356
Accumulated Depreciation	$ 12,638
Richmond [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Richmond
No. of Facilities | item	10
Net Rentable Square Feet | ft²	460
Initial Cost, Land	$ 13,248
Initial Cost, Buildings & Improvements	23,253
Costs Subsequent to Acquisition	4,248
Gross Carrying Amount, Land	13,053
Gross Carrying Amount, Buildings	27,696
Gross Carrying Amount, Total	40,749
Accumulated Depreciation	$ 16,460
Tucson [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Tucson
No. of Facilities | item	7
Net Rentable Square Feet | ft²	439
Initial Cost, Land	$ 9,403
Initial Cost, Buildings & Improvements	25,491
Costs Subsequent to Acquisition	5,475
Gross Carrying Amount, Land	9,884
Gross Carrying Amount, Buildings	30,485
Gross Carrying Amount, Total	40,369
Accumulated Depreciation	$ 17,863
Cleveland/Akron [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Cleveland/Akron
No. of Facilities | item	7
Net Rentable Square Feet | ft²	437
Initial Cost, Land	$ 4,070
Initial Cost, Buildings & Improvements	16,139
Costs Subsequent to Acquisition	5,344
Gross Carrying Amount, Land	4,463
Gross Carrying Amount, Buildings	21,090
Gross Carrying Amount, Total	25,553
Accumulated Depreciation	$ 10,952
Wichita [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Wichita
No. of Facilities | item	7
Net Rentable Square Feet | ft²	433
Initial Cost, Land	$ 2,017
Initial Cost, Buildings & Improvements	6,691
Costs Subsequent to Acquisition	7,078
Gross Carrying Amount, Land	2,130
Gross Carrying Amount, Buildings	13,656
Gross Carrying Amount, Total	15,786
Accumulated Depreciation	$ 11,416
Mobile [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Mobile
No. of Facilities | item	9
Net Rentable Square Feet | ft²	394
Initial Cost, Land	$ 4,257
Initial Cost, Buildings & Improvements	17,441
Costs Subsequent to Acquisition	4,532
Gross Carrying Amount, Land	4,084
Gross Carrying Amount, Buildings	22,146
Gross Carrying Amount, Total	26,230
Accumulated Depreciation	$ 11,804
Omaha [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Omaha
No. of Facilities | item	4
Net Rentable Square Feet | ft²	377
Initial Cost, Land	$ 7,491
Initial Cost, Buildings & Improvements	20,930
Costs Subsequent to Acquisition	1,800
Gross Carrying Amount, Land	7,491
Gross Carrying Amount, Buildings	22,730
Gross Carrying Amount, Total	30,221
Accumulated Depreciation	$ 2,165
Monterey/Salinas [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Monterey/Salinas
No. of Facilities | item	7
Net Rentable Square Feet | ft²	329
Initial Cost, Land	$ 8,465
Initial Cost, Buildings & Improvements	24,151
Costs Subsequent to Acquisition	4,045
Gross Carrying Amount, Land	8,455
Gross Carrying Amount, Buildings	28,206
Gross Carrying Amount, Total	36,661
Accumulated Depreciation	$ 19,811
Palm Springs [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Palm Springs
No. of Facilities | item	3
Net Rentable Square Feet | ft²	242
Initial Cost, Land	$ 8,309
Initial Cost, Buildings & Improvements	18,065
Costs Subsequent to Acquisition	1,240
Gross Carrying Amount, Land	8,309
Gross Carrying Amount, Buildings	19,305
Gross Carrying Amount, Total	27,614
Accumulated Depreciation	$ 9,531
Evansville [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Evansville
No. of Facilities | item	4
Net Rentable Square Feet | ft²	232
Initial Cost, Land	$ 1,826
Initial Cost, Buildings & Improvements	8,445
Costs Subsequent to Acquisition	1,169
Gross Carrying Amount, Land	1,798
Gross Carrying Amount, Buildings	9,642
Gross Carrying Amount, Total	11,440
Accumulated Depreciation	$ 3,132
Dayton [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Dayton
No. of Facilities | item	5
Net Rentable Square Feet | ft²	230
Initial Cost, Land	$ 1,074
Initial Cost, Buildings & Improvements	8,975
Costs Subsequent to Acquisition	4,752
Gross Carrying Amount, Land	1,073
Gross Carrying Amount, Buildings	13,728
Gross Carrying Amount, Total	14,801
Accumulated Depreciation	$ 6,593
Augusta [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Augusta
No. of Facilities | item	4
Net Rentable Square Feet | ft²	202
Initial Cost, Land	$ 1,793
Initial Cost, Buildings & Improvements	5,990
Costs Subsequent to Acquisition	2,328
Gross Carrying Amount, Land	1,793
Gross Carrying Amount, Buildings	8,318
Gross Carrying Amount, Total	10,111
Accumulated Depreciation	$ 5,497
Fort Wayne [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Fort Wayne
No. of Facilities | item	3
Net Rentable Square Feet | ft²	168
Initial Cost, Land	$ 349
Initial Cost, Buildings & Improvements	3,594
Costs Subsequent to Acquisition	3,095
Gross Carrying Amount, Land	349
Gross Carrying Amount, Buildings	6,689
Gross Carrying Amount, Total	7,038
Accumulated Depreciation	$ 5,718
Providence [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Providence
No. of Facilities | item	3
Net Rentable Square Feet | ft²	155
Initial Cost, Land	$ 995
Initial Cost, Buildings & Improvements	11,206
Costs Subsequent to Acquisition	2,847
Gross Carrying Amount, Land	995
Gross Carrying Amount, Buildings	14,053
Gross Carrying Amount, Total	15,048
Accumulated Depreciation	$ 5,716
Huntsville/Decatur [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Huntsville/Decatur
No. of Facilities | item	3
Net Rentable Square Feet | ft²	153
Initial Cost, Land	$ 1,024
Initial Cost, Buildings & Improvements	3,321
Costs Subsequent to Acquisition	2,989
Gross Carrying Amount, Land	971
Gross Carrying Amount, Buildings	6,363
Gross Carrying Amount, Total	7,334
Accumulated Depreciation	$ 5,820
Shreveport [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Shreveport
No. of Facilities | item	2
Net Rentable Square Feet | ft²	150
Initial Cost, Land	$ 817
Initial Cost, Buildings & Improvements	3,030
Costs Subsequent to Acquisition	2,252
Gross Carrying Amount, Land	741
Gross Carrying Amount, Buildings	5,358
Gross Carrying Amount, Total	6,099
Accumulated Depreciation	$ 4,498
Springfield/Holyoke [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Springfield/Holyoke
No. of Facilities | item	2
Net Rentable Square Feet | ft²	144
Initial Cost, Land	$ 1,428
Initial Cost, Buildings & Improvements	3,380
Costs Subsequent to Acquisition	1,781
Gross Carrying Amount, Land	1,427
Gross Carrying Amount, Buildings	5,162
Gross Carrying Amount, Total	6,589
Accumulated Depreciation	$ 4,401
Rochester [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Rochester
No. of Facilities | item	2
Net Rentable Square Feet | ft²	99
Initial Cost, Land	$ 1,047
Initial Cost, Buildings & Improvements	2,246
Costs Subsequent to Acquisition	1,963
Gross Carrying Amount, Land	980
Gross Carrying Amount, Buildings	4,276
Gross Carrying Amount, Total	5,256
Accumulated Depreciation	$ 3,710
Santa Barbara [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Santa Barbara
No. of Facilities | item	2
Net Rentable Square Feet | ft²	98
Initial Cost, Land	$ 5,733
Initial Cost, Buildings & Improvements	9,106
Costs Subsequent to Acquisition	385
Gross Carrying Amount, Land	5,733
Gross Carrying Amount, Buildings	9,491
Gross Carrying Amount, Total	15,224
Accumulated Depreciation	$ 5,043
Topeka [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Topeka
No. of Facilities | item	2
Net Rentable Square Feet | ft²	94
Initial Cost, Land	$ 225
Initial Cost, Buildings & Improvements	1,419
Costs Subsequent to Acquisition	1,983
Gross Carrying Amount, Land	225
Gross Carrying Amount, Buildings	3,402
Gross Carrying Amount, Total	3,627
Accumulated Depreciation	$ 2,852
Lansing [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Lansing
No. of Facilities | item	2
Net Rentable Square Feet | ft²	88
Initial Cost, Land	$ 556
Initial Cost, Buildings & Improvements	2,882
Costs Subsequent to Acquisition	821
Gross Carrying Amount, Land	556
Gross Carrying Amount, Buildings	3,703
Gross Carrying Amount, Total	4,259
Accumulated Depreciation	$ 2,058
Roanoke [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Roanoke
No. of Facilities | item	1
Net Rentable Square Feet | ft²	57
Initial Cost, Land	$ 819
Initial Cost, Buildings & Improvements	1,776
Costs Subsequent to Acquisition	580
Gross Carrying Amount, Land	819
Gross Carrying Amount, Buildings	2,356
Gross Carrying Amount, Total	3,175
Accumulated Depreciation	$ 2,132
Flint [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Flint
No. of Facilities | item	1
Net Rentable Square Feet | ft²	56
Initial Cost, Land	$ 543
Initial Cost, Buildings & Improvements	3,068
Costs Subsequent to Acquisition	217
Gross Carrying Amount, Land	542
Gross Carrying Amount, Buildings	3,286
Gross Carrying Amount, Total	3,828
Accumulated Depreciation	$ 1,687
Joplin [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Joplin
No. of Facilities | item	1
Net Rentable Square Feet | ft²	56
Initial Cost, Land	$ 264
Initial Cost, Buildings & Improvements	904
Costs Subsequent to Acquisition	952
Gross Carrying Amount, Land	264
Gross Carrying Amount, Buildings	1,856
Gross Carrying Amount, Total	2,120
Accumulated Depreciation	$ 1,538
Syracuse [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Syracuse
No. of Facilities | item	1
Net Rentable Square Feet | ft²	55
Initial Cost, Land	$ 545
Initial Cost, Buildings & Improvements	1,279
Costs Subsequent to Acquisition	777
Gross Carrying Amount, Land	545
Gross Carrying Amount, Buildings	2,056
Gross Carrying Amount, Total	2,601
Accumulated Depreciation	$ 1,897
Modesto/Fresno/Stockton [Member] | Self-Storage Facilities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Description	Modesto/Fresno/Stockton
No. of Facilities | item	1
Net Rentable Square Feet | ft²	33
Initial Cost, Land	$ 44
Initial Cost, Buildings & Improvements	206
Costs Subsequent to Acquisition	963
Gross Carrying Amount, Land	193
Gross Carrying Amount, Buildings	1,020
Gross Carrying Amount, Total	1,213
Accumulated Depreciation	$ 725