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Income Taxes - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Income Tax Contingency [Line Items]    
Tax expense (benefit), intra-entity transfers of assets other than inventory, amount $ (147)  
Tax expense (benefit), share-based payment arrangement   $ (45)
Unrecognized tax benefits 1,400  
Unrecognized tax benefits that would impact effective tax rate 1,300  
Minimum    
Income Tax Contingency [Line Items]    
Tax liability increase due to proposed adjustment to taxable income 600  
Maximum    
Income Tax Contingency [Line Items]    
Tax liability increase due to proposed adjustment to taxable income $ 700