v3.26.1
Financial instruments - Narrative (Details)
$ / shares in Units, $ in Thousands
 12 Months Ended
Jun. 23, 2022
tranche
$ / shares
shares
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Disclosure of financial liabilities [line items]        
Interest revenue for financial assets measured at amortised cost | $   $ 7,640 $ 21,093 $ 32,280
Interest expense for financial liabilities measured at amortised cost | $   375,226 335,412 205,677
Fair value changes - Earn-out rights and Class C shares | $   $ 23,391 $ 129,124 [1] $ 465,168 [1]
Class A Shares        
Disclosure of financial liabilities [line items]        
Shares issuable, threshold trading days 20 days      
Shares issuable, threshold trading day period 30 days      
Class A Shares | Business Combination Agreement, Tranche Five        
Disclosure of financial liabilities [line items]        
Closing share price (in usd per share) | $ / shares $ 690.0      
Class A Shares | Business Combination Agreement, Tranche Three        
Disclosure of financial liabilities [line items]        
Closing share price (in usd per share) | $ / shares 540.0      
Class A Shares | Business Combination Agreement, Tranche Two        
Disclosure of financial liabilities [line items]        
Closing share price (in usd per share) | $ / shares 465.0      
Class A Shares | Business Combination Agreement, Tranche Four        
Disclosure of financial liabilities [line items]        
Closing share price (in usd per share) | $ / shares 615.0      
Class A Shares | Business Combination Agreement, Tranche One        
Disclosure of financial liabilities [line items]        
Closing share price (in usd per share) | $ / shares $ 390.0      
Polestar Automotive Holding Limited ("Former Parent")        
Disclosure of financial liabilities [line items]        
Number of tranches | tranche 5      
Polestar Automotive Holding Limited ("Former Parent") | Class A Shares        
Disclosure of financial liabilities [line items]        
Number of earn-out rights (in shares) 802,621      
Polestar Automotive Holding Limited ("Former Parent") | Class A Shares | Business Combination Agreement, Tranche Five        
Disclosure of financial liabilities [line items]        
Number of earn-out rights (in shares) 160,524      
Polestar Automotive Holding Limited ("Former Parent") | Class A Shares | Business Combination Agreement, Tranche Three        
Disclosure of financial liabilities [line items]        
Number of earn-out rights (in shares) 160,524      
Polestar Automotive Holding Limited ("Former Parent") | Class A Shares | Business Combination Agreement, Tranche Two        
Disclosure of financial liabilities [line items]        
Number of earn-out rights (in shares) 160,524      
Polestar Automotive Holding Limited ("Former Parent") | Class A Shares | Business Combination Agreement, Tranche Four        
Disclosure of financial liabilities [line items]        
Number of earn-out rights (in shares) 160,524      
Polestar Automotive Holding Limited ("Former Parent") | Class A Shares | Business Combination Agreement, Tranche One        
Disclosure of financial liabilities [line items]        
Number of earn-out rights (in shares) 160,524      
Polestar Automotive Holding Limited ("Former Parent") | Class B Shares        
Disclosure of financial liabilities [line items]        
Number of earn-out rights (in shares) 4,469,966      
Polestar Automotive Holding Limited ("Former Parent") | Class B Shares | Business Combination Agreement, Tranche Five        
Disclosure of financial liabilities [line items]        
Number of earn-out rights (in shares) 893,993      
Polestar Automotive Holding Limited ("Former Parent") | Class B Shares | Business Combination Agreement, Tranche Three        
Disclosure of financial liabilities [line items]        
Number of earn-out rights (in shares) 893,993      
Polestar Automotive Holding Limited ("Former Parent") | Class B Shares | Business Combination Agreement, Tranche Two        
Disclosure of financial liabilities [line items]        
Number of earn-out rights (in shares) 893,993      
Polestar Automotive Holding Limited ("Former Parent") | Class B Shares | Business Combination Agreement, Tranche Four        
Disclosure of financial liabilities [line items]        
Number of earn-out rights (in shares) 893,993      
Polestar Automotive Holding Limited ("Former Parent") | Class B Shares | Business Combination Agreement, Tranche One        
Disclosure of financial liabilities [line items]        
Number of earn-out rights (in shares) 893,993      
[1] Certain figures and descriptions were re-presented (see Voluntary re-presentation from previous year in Note 2 - Material accounting policies and use of significant judgements and estimates).