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Cover
6 Months Ended
Dec. 31, 2021
Cover [Abstract]  
Document Type 6-K
Amendment Flag false
Document Period End Date Dec. 31, 2021
Current Fiscal Year End Date --06-30
Entity File Number 001-40569
Entity Registrant Name Standard Lithium Ltd.
Entity Central Index Key 0001537137
Entity Address, Address Line One Suite 110
Entity Address, Address Line Two 375 Water Street
Entity Address, Address Line Three Vancouver
Entity Address, City or Town British Columbia
Entity Address, Country CA
Entity Address, Postal Zip Code V6B 5C6