Significant Accounting Policies - Property and Equipment (Details) - USD ($) $ in Millions |
Dec. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Total property and equipment | $ 36,440 | $ 33,882 |
| Accumulated depreciation and amortization | (23,447) | (20,699) |
| Property and equipment, net | 12,993 | 13,183 |
| Land | ||
| Property, Plant and Equipment [Line Items] | ||
| Total property and equipment | 1,847 | 1,958 |
| Building and improvements | ||
| Property, Plant and Equipment [Line Items] | ||
| Total property and equipment | 4,632 | 4,571 |
| Fixtures and equipment | ||
| Property, Plant and Equipment [Line Items] | ||
| Total property and equipment | 11,716 | 11,024 |
| Leasehold improvements | ||
| Property, Plant and Equipment [Line Items] | ||
| Total property and equipment | 6,725 | 6,511 |
| Software | ||
| Property, Plant and Equipment [Line Items] | ||
| Total property and equipment | $ 11,520 | $ 9,818 |