Property and Equipment - Schedule of Property and Equipment (Details) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Property, Plant and Equipment, Gross | $ 52,672 | $ 47,140 |
| Less—accumulated depreciation and amortization | (16,976) | (15,309) |
| Property and equipment, net | 35,696 | 31,831 |
| Ships | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, Plant and Equipment, Gross | 45,108 | 41,046 |
| Ship improvements | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, Plant and Equipment, Gross | 2,663 | 2,491 |
| Ships under construction | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, Plant and Equipment, Gross | 1,312 | 1,048 |
| Land, buildings and improvements, including leasehold improvements and port facilities | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, Plant and Equipment, Gross | 1,519 | 887 |
| Computer hardware and software | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, Plant and Equipment, Gross | $ 2,070 | $ 1,668 |