v3.26.1
Summary of Significant Accounting Policies - Schedule of Disaggregation of Revenue by Major Source (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Disaggregation Of Revenue [Line Items]        
Total revenues $ 28,236 $ 22,496 $ 50,623 $ 41,831
Total revenues from sales and services        
Disaggregation Of Revenue [Line Items]        
Total revenues 27,731 21,918 49,634 40,697
Automotive sales        
Disaggregation Of Revenue [Line Items]        
Total revenues 20,006 15,787 35,479 28,712
Automotive regulatory credits        
Disaggregation Of Revenue [Line Items]        
Total revenues 146 439 526 1,034
Energy generation and storage sales        
Disaggregation Of Revenue [Line Items]        
Total revenues 2,998 2,646 5,303 5,267
Services and other        
Disaggregation Of Revenue [Line Items]        
Total revenues 4,581 3,046 8,326 5,684
Automotive leasing        
Disaggregation Of Revenue [Line Items]        
Total revenues 364 435 745 882
Energy generation and storage leasing        
Disaggregation Of Revenue [Line Items]        
Total revenues $ 141 $ 143 $ 244 $ 252