Quarterly report pursuant to Section 13 or 15(d)

Partners' Capital - Reconciliation of Change in Total Partners' Capital (Detail)

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Partners' Capital - Reconciliation of Change in Total Partners' Capital (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Partners Capital [Line Items]    
Exercise of stock options $ 173  
Earned portion of non-vested stock 1,661 $ 1,453
Carrying value less than redemption value on redeemed noncontrolling interest   (4)
Adjustment to redemption value on noncontrolling redeemable Operating Partnership units 10,924 (2,358)
Net income attributable to common shareholders/unitholders 73,575 47,383
Amortization of terminated hedge included in AOCL 229 229
Life Storage LP [Member]    
Partners Capital [Line Items]    
Beginning balance of total controlling partners’ capital 3,378,999 2,378,098
Net proceeds from issuance of Operating Partnership Units 92,771 180,529
Exercise of stock options 173  
Earned portion of non-vested stock 1,661 1,453
Carrying value less than redemption value on redeemed noncontrolling interest 0 (4)
Adjustment to redemption value on noncontrolling redeemable Operating Partnership units 10,924 (2,358)
Net income attributable to common shareholders/unitholders 73,575 47,383
Amortization of terminated hedge included in AOCL 229 229
Distributions (83,637) (55,840)
Ending balance of total controlling partners’ capital 3,474,695 2,549,490
Life Storage LP [Member] | Life Storage Holdings, Inc. General Partner [Member]    
Partners Capital [Line Items]    
Beginning balance of total controlling partners’ capital 36,131 24,045
Net proceeds from issuance of Operating Partnership Units 927 1,807
Exercise of stock options 2  
Earned portion of non-vested stock 17 14
Carrying value less than redemption value on redeemed noncontrolling interest (1) (1)
Adjustment to redemption value on noncontrolling redeemable Operating Partnership units 0 0
Net income attributable to common shareholders/unitholders 754 476
Amortization of terminated hedge included in AOCL 2 2
Distributions (846) (561)
Ending balance of total controlling partners’ capital 36,986 25,782
Life Storage LP [Member] | Life Storage, Inc. Limited Partner [Member]    
Partners Capital [Line Items]    
Beginning balance of total controlling partners’ capital 3,346,992 2,359,094
Net proceeds from issuance of Operating Partnership Units 91,844 178,722
Exercise of stock options 171  
Earned portion of non-vested stock 1,644 1,439
Carrying value less than redemption value on redeemed noncontrolling interest 1 (3)
Adjustment to redemption value on noncontrolling redeemable Operating Partnership units 10,924 (2,358)
Net income attributable to common shareholders/unitholders 72,821 46,907
Amortization of terminated hedge included in AOCL (2) (2)
Distributions (82,791) (55,279)
Ending balance of total controlling partners’ capital 3,441,604 2,528,520
Accumulated Other Comprehensive Income (Loss) [Member]    
Partners Capital [Line Items]    
Exercise of stock options 0  
Earned portion of non-vested stock 0 0
Carrying value less than redemption value on redeemed noncontrolling interest   0
Adjustment to redemption value on noncontrolling redeemable Operating Partnership units 0 0
Net income attributable to common shareholders/unitholders 0 0
Amortization of terminated hedge included in AOCL 229 229
Accumulated Other Comprehensive Income (Loss) [Member] | Life Storage LP [Member]    
Partners Capital [Line Items]    
Beginning balance of total controlling partners’ capital (4,124) (5,041)
Net proceeds from issuance of Operating Partnership Units 0 0
Exercise of stock options 0  
Earned portion of non-vested stock 0 0
Carrying value less than redemption value on redeemed noncontrolling interest 0 0
Adjustment to redemption value on noncontrolling redeemable Operating Partnership units 0 0
Net income attributable to common shareholders/unitholders 0 0
Amortization of terminated hedge included in AOCL 229 229
Distributions 0 0
Ending balance of total controlling partners’ capital $ (3,895) $ (4,812)