STOCKHOLDERS' EQUITY (Schedule of Components of Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands		3 Months Ended			6 Months Ended		12 Months Ended
		Feb. 28, 2022	Feb. 28, 2021		Feb. 28, 2022	Feb. 28, 2021	Aug. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, Attributable to PriceSmart					$ 915,345
Other comprehensive income (loss), Attributable to PriceSmart		$ 4,226	$ (1,093)		(1,902)	$ 2,100
Balance, Attributable to PriceSmart		953,884			953,884		$ 915,345
Balance		942,146	867,291		916,214	832,732	832,732
Balance		953,884	875,251		953,884	875,251	916,214
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, Attributable to PriceSmart					(182,508)	(176,820)	(176,820)
Other comprehensive income (loss), Attributable to PriceSmart		4,226	(1,120)		(1,905)	2,042
Balance, Attributable to PriceSmart		(184,413)	(174,778)		(184,413)	(174,778)	(182,508)
Balance		(188,639)	(173,658)		(182,508)	(176,820)	(176,820)
Balance		(184,413)	(174,778)		(184,413)	(174,778)	(182,508)
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), Attributable to PriceSmart			430		(5,718)		(7,837)
Defined Benefit Pension Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), Attributable to PriceSmart	[1]		128		101		(230)
Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), Attributable to PriceSmart			1,484	[2]	3,712		2,252	[2]
Other comprehensive income (loss)					3,712
Sale Of Aeropost [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss)	[2]				(254)
AOCI Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance					251	134	134
Balance			192			192	251
Accumulated Foreign Currency Adjustment Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss)			58		3		117
Reclassification From Other Comprehensive Income (Loss) Attributable To Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amount reclassified from accumulated other comprehensive income (loss), Attributable to PriceSmart							127
AOCI Including Portion Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance					(182,257)	(176,686)	(176,686)
Balance		$ (184,413)	(174,586)		(184,413)	$ (174,586)	(182,257)
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss)			488		(5,715)		(7,720)
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss)	[1]		128		$ 101		(230)
Accumulated Derivative Instruments Including Portion Attributable To Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss)	[2]		$ 1,484				2,252
Reclassification From Other Comprehensive Income (Loss) Including Portion Attributable To Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income (loss)							$ 127

[1] Amounts reclassified from accumulated other comprehensive income (loss) related to the minimum pension liability are included in warehouse club and other operations in the Company's consolidated statements of income.

[2] Refer to Note 8 - Derivative Instruments and Hedging Activities.