Annual report pursuant to Section 13 and 15(d)

Supplementary Quarterly Financial Data (Unaudited) - Summary of Quarterly Results of Operations (Detail)

v3.22.0.1
Supplementary Quarterly Financial Data (Unaudited) - Summary of Quarterly Results of Operations (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Quarterly Financial Information [Line Items]                      
Operating revenue $ 221,159 $ 208,256 $ 187,262 $ 171,887 $ 166,505 $ 156,310 $ 147,013 $ 146,943 $ 788,565 $ 616,771 $ 574,739
Net income 75,767 71,051 57,765 47,592 41,799 37,288 36,648 36,625 252,175 152,360 260,077
Net income attributable to common shareholders/unitholders $ 74,145 $ 70,274 $ 57,516 $ 47,383 $ 41,586 $ 37,095 $ 36,457 $ 36,433 $ 249,317 $ 151,571 $ 258,699
Earnings per common share/unit attributable to common shareholders/unitholders - basic $ 0.90 $ 0.89 $ 0.75 $ 0.63 $ 0.57 $ 0.52 $ 0.52 $ 0.52 $ 3.18 $ 2.13 $ 3.70
Earnings per common share/unit attributable to common shareholders/unitholders - diluted $ 0.90 $ 0.89 $ 0.74 $ 0.63 $ 0.57 $ 0.52 $ 0.52 $ 0.52 $ 3.17 $ 2.13 $ 3.70
Life Storage LP [Member]                      
Quarterly Financial Information [Line Items]                      
Operating revenue $ 221,159 $ 208,256 $ 187,262 $ 171,887 $ 166,505 $ 156,310 $ 147,013 $ 146,943 $ 788,565 $ 616,771 $ 574,739
Net income 75,767 71,051 57,765 47,592 41,799 37,288 36,648 36,625 252,175 152,360 260,077
Net income attributable to common shareholders/unitholders $ 74,145 $ 70,274 $ 57,516 $ 47,383 $ 41,586 $ 37,095 $ 36,457 $ 36,433 $ 249,317 $ 151,571 $ 258,699
Earnings per common share/unit attributable to common shareholders/unitholders - basic $ 0.90 $ 0.89 $ 0.75 $ 0.63 $ 0.57 $ 0.52 $ 0.52 $ 0.52 $ 3.18 $ 2.13 $ 3.70
Earnings per common share/unit attributable to common shareholders/unitholders - diluted $ 0.90 $ 0.89 $ 0.74 $ 0.63 $ 0.57 $ 0.52 $ 0.52 $ 0.52 $ 3.17 $ 2.13 $ 3.70