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Summary of Significant Accounting Policies - Additional Information (Details)
$ / shares in Units, $ in Millions
1 Months Ended 4 Months Ended 12 Months Ended
Jun. 05, 2020
USD ($)
shares
Feb. 28, 2020
$ / shares
shares
Oct. 31, 2021
shares
Mar. 31, 2021
shares
Dec. 31, 2020
shares
Sep. 30, 2020
USD ($)
shares
Sep. 30, 2022
USD ($)
shares
Sep. 30, 2021
USD ($)
shares
Sep. 30, 2020
USD ($)
shares
Sep. 30, 2019
shares
Accounting Policies [Line Items]                    
Capital stock authorized (in shares)   2,100,000,000                
Preferred stock,, authorized (in shares)   100,000,000                
Preferred stock, par value (in dollars per share) | $ / shares   $ 1.00                
Stockholders' equity note, stock split, conversion ratio   477,242.614671815                
Foreign currency transaction gain (loss) recognized in operating income (loss) | $             $ (11) $ 0 $ 2  
Foreign currency transaction gain (loss) recognized in other income (expense) | $             185 (8) (57)  
Advertising expense | $             $ 155 149 115  
Award requisite service period             4 years      
Modification of stock-based compensation plan | $                 769  
Non-cash compensation expense | $             $ 39 $ 45 608  
Share-based Payment Arrangement                    
Accounting Policies [Line Items]                    
Non-cash compensation expense | $           $ 11        
IPO                    
Accounting Policies [Line Items]                    
Preferred stock, outstanding (in shares) 0                  
Award requisite service period             1 year      
Modification of stock-based compensation plan | $ $ 769                  
Additional Paid-in Capital                    
Accounting Policies [Line Items]                    
Modification of stock-based compensation plan | $ 769               $ 769  
Additional Paid-in Capital | IPO Tag-Along Right                    
Accounting Policies [Line Items]                    
Modification of stock-based compensation plan | $ $ 57                  
Furniture and fixtures | Minimum                    
Accounting Policies [Line Items]                    
Property plant and equipment useful life             5 years      
Furniture and fixtures | Maximum                    
Accounting Policies [Line Items]                    
Property plant and equipment useful life             7 years      
Computer Equipment | Maximum                    
Accounting Policies [Line Items]                    
Property plant and equipment useful life             5 years      
Machinery and equipment | Maximum                    
Accounting Policies [Line Items]                    
Property plant and equipment useful life             13 years      
Building | Maximum                    
Accounting Policies [Line Items]                    
Property plant and equipment useful life             40 years      
Spotify | Credit Concentration Risk | Accounts Receivable                    
Accounting Policies [Line Items]                    
Customer concentration percentage             17.00% 18.00%    
Common Class A                    
Accounting Policies [Line Items]                    
Common stock authorized (in shares)   1,000,000,000         1,000,000,000 1,000,000,000    
Common stock outstanding (in shares)             137,199,200 122,414,827    
Common Class A | IPO                    
Accounting Policies [Line Items]                    
Common stock outstanding (in shares) 88,550,000                  
Common Class A | Common Stock                    
Accounting Policies [Line Items]                    
Common stock outstanding (in shares)           88,578,361 137,199,200 122,414,827 88,578,361 0
Exchange of Class B shares for Class A shares (in shares)             14,320,547 19,234,103    
Conversion of Class B shares to Class A shares (in shares)               10,244,898    
Common Class B                    
Accounting Policies [Line Items]                    
Common stock authorized (in shares)   1,000,000,000         1,000,000,000 1,000,000,000    
Common stock outstanding (in shares)   510,000,000         377,650,449 391,970,996    
Exchange of Class B shares for Class A shares (in shares)     510,165 968,920 18,265,183          
Stock redeemed during period (in shares)             510,165      
Conversion of Class B shares to Class A shares (in shares)             13,810,382      
Common Class B | IPO                    
Accounting Policies [Line Items]                    
Common stock outstanding (in shares) 421,450,000                  
Common Class B | Common Stock                    
Accounting Policies [Line Items]                    
Common stock outstanding (in shares)           421,450,000 377,650,449 391,970,996 421,450,000 505,830,022
Exchange of Class B shares for Class A shares (in shares)             14,320,547 19,234,106    
Conversion of Class B shares to Class A shares (in shares)               10,244,898