STOCKHOLDERS' EQUITY (Schedule of Components of Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands		12 Months Ended
		Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, Attributable to PriceSmart		$ 915,345
Other comprehensive income (loss), Attributable to PriceSmart		(13,075)	$ (5,571)	$ (32,367)
Balance, Attributable to PriceSmart		991,073	915,345
Balance		916,214	832,732	798,279
Amounts reclassified from accumulated other comprehensive income (loss)				2,814
Balance		991,073	916,214	832,732
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, Attributable to PriceSmart		(182,508)	(176,820)	(144,339)
Other comprehensive income (loss), Attributable to PriceSmart		(13,078)	(5,688)	(32,481)
Amount reclassified from accumulated other comprehensive income (loss), Attributable to PriceSmart		127	127	2,814
Balance, Attributable to PriceSmart		(195,586)	(182,508)	(176,820)
Balance		(182,508)	(176,820)	(144,339)
Balance		(195,586)	(182,508)	(176,820)
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), Attributable to PriceSmart		(19,034)	(7,837)	(29,413)
Defined Benefit Pension Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), Attributable to PriceSmart	[1]	(341)	(230)	(79)
Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), Attributable to PriceSmart	[2]	6,170	2,252	(5,803)
Sale Of Aeropost [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss)		(254)
AOCI Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance		251	134	20
Balance			251	134
Accumulated Foreign Currency Adjustment Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss)		3	117	114
AOCI Including Portion Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance		(182,257)	(176,686)	(144,319)
Balance		(195,586)	(182,257)	(176,686)
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss)		(19,031)	(7,720)	(29,299)
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss)	[1]	(341)	(230)	(79)
Accumulated Derivative Instruments Including Portion Attributable To Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss)	[2]	6,170	2,252	$ (5,803)
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	$ 127

[1] Amounts reclassified from accumulated other comprehensive 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 13 - Derivative Instruments and Hedging Activities.