v3.24.1.u1
Summary of Significant Accounting Policies - Schedule of Disaggregation of Revenue by Major Source (Detail) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Disaggregation Of Revenue [Line Items]    
Revenues $ 21,301 $ 23,329
Total revenues from sales and services    
Disaggregation Of Revenue [Line Items]    
Revenues 20,712 22,649
Automotive sales    
Disaggregation Of Revenue [Line Items]    
Revenues 16,460 18,878
Automotive regulatory credits    
Disaggregation Of Revenue [Line Items]    
Revenues 442 521
Energy generation and storage sales    
Disaggregation Of Revenue [Line Items]    
Revenues 1,522 1,413
Services and other    
Disaggregation Of Revenue [Line Items]    
Revenues 2,288 1,837
Automotive leasing    
Disaggregation Of Revenue [Line Items]    
Revenues 476 564
Energy generation and storage leasing    
Disaggregation Of Revenue [Line Items]    
Revenues $ 113 $ 116