Basis of Presentation - Additional Information (Detail)	6 Months Ended
Jun. 30, 2022
Life Storage LP [Member]
Schedule Of Significant Accounting Policies [Line Items]
Stock distribution terms	Share and per share amounts and unit and per unit amounts as of and for all periods presented have been adjusted to reflect the impact of the three-for-two distribution of common stock announced by the Company on January 4, 2021 and distributed on January 27, 2021 to shareholders and unitholders of record on January 15, 2021.

Incentive distribution payments made to managing members or general partners on a percentage scale, based on amounts in excess of distributions to Limited Liability Corporation or Limited Partnership members or limited partners.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 73
-URI https://asc.fasb.org/extlink&oid=6926462&loc=SL5163674-159010

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 55
-Paragraph 103
-URI https://asc.fasb.org/extlink&oid=109243028&loc=SL5199526-159011

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 72
-URI https://asc.fasb.org/extlink&oid=6926462&loc=SL5163672-159010

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