Summary of Significant Accounting Policies - Segment Reporting (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Segment Reporting Information [Line Items] | ||||
| Total revenue | $ 2,517,497,000 | $ 2,372,492,000 | $ 4,645,050,000 | $ 4,563,707,000 |
| Cruise operating expense | ||||
| Total cruise operating expense | 1,456,847,000 | 1,454,755,000 | 2,760,785,000 | 2,842,178,000 |
| Other operating expense | ||||
| Depreciation and amortization | 243,760,000 | 222,405,000 | 475,057,000 | 445,334,000 |
| Total other operating expense | 636,814,000 | 576,176,000 | 1,259,487,000 | 1,161,574,000 |
| Interest expense, net | (236,782,000) | (178,472,000) | (454,654,000) | (396,649,000) |
| Other income (expense), net | (156,425,000) | 1,896,000 | (180,930,000) | 20,033,000 |
| Net income (loss) before income taxes | 30,629,000 | 164,985,000 | (10,806,000) | 183,339,000 |
| Service cost | 552,000 | 718,000 | 1,105,000 | 1,437,000 |
| Commissions, transportation and other | ||||
| Cruise operating expense | ||||
| Total cruise operating expense | 487,835,000 | 501,039,000 | 883,178,000 | 937,249,000 |
| Onboard and other | ||||
| Segment Reporting Information [Line Items] | ||||
| Total revenue | 808,512,000 | 770,416,000 | 1,517,381,000 | 1,501,817,000 |
| Cruise operating expense | ||||
| Total cruise operating expense | 187,684,000 | 171,707,000 | 326,542,000 | 303,743,000 |
| Payroll and related | ||||
| Cruise operating expense | ||||
| Total cruise operating expense | 346,133,000 | 330,578,000 | 680,637,000 | 674,859,000 |
| Fuel | ||||
| Cruise operating expense | ||||
| Total cruise operating expense | 157,377,000 | 174,964,000 | 332,391,000 | 372,698,000 |
| Food | ||||
| Cruise operating expense | ||||
| Total cruise operating expense | 81,323,000 | 77,046,000 | 156,911,000 | 161,754,000 |
| Other | ||||
| Cruise operating expense | ||||
| Total cruise operating expense | 196,495,000 | 199,421,000 | 381,126,000 | 391,875,000 |
| Single reportable segment | ||||
| Segment Reporting Information [Line Items] | ||||
| Total revenue | 2,517,497,000 | 2,372,492,000 | 4,645,050,000 | 4,563,707,000 |
| Cruise operating expense | ||||
| Adjusted total cruise operating expense | 1,450,887,000 | 1,448,960,000 | 2,749,448,000 | 2,831,050,000 |
| Other operating expense | ||||
| Adjusted marketing, general and administrative | 372,563,000 | 335,864,000 | 748,482,000 | 680,999,000 |
| Depreciation and amortization | 243,760,000 | 222,405,000 | 475,057,000 | 445,334,000 |
| Adjusted total other operating expense | 616,323,000 | 558,269,000 | 1,223,539,000 | 1,126,333,000 |
| Adjusted operating income (loss) | 450,287,000 | 365,263,000 | 672,063,000 | 606,324,000 |
| Non-cash compensation | (26,451,000) | (23,702,000) | (47,285,000) | (46,369,000) |
| Interest expense, net | (236,782,000) | (178,472,000) | (454,654,000) | (396,649,000) |
| Other income (expense), net | (156,425,000) | 1,896,000 | (180,930,000) | 20,033,000 |
| Net income (loss) before income taxes | 30,629,000 | 164,985,000 | (10,806,000) | 183,339,000 |
| Single reportable segment | Commissions, transportation and other | ||||
| Cruise operating expense | ||||
| Total cruise operating expense | 487,835,000 | 501,039,000 | 883,178,000 | 937,249,000 |
| Single reportable segment | Onboard and other | ||||
| Cruise operating expense | ||||
| Total cruise operating expense | 187,684,000 | 171,707,000 | 326,542,000 | 303,743,000 |
| Single reportable segment | Payroll and related | ||||
| Cruise operating expense | ||||
| Adjusted total cruise operating expense | 340,173,000 | 324,783,000 | 669,300,000 | 663,731,000 |
| Single reportable segment | Fuel | ||||
| Cruise operating expense | ||||
| Total cruise operating expense | 157,377,000 | 174,964,000 | 332,391,000 | 372,698,000 |
| Single reportable segment | Food | ||||
| Cruise operating expense | ||||
| Total cruise operating expense | 81,323,000 | 77,046,000 | 156,911,000 | 161,754,000 |
| Single reportable segment | Other | ||||
| Cruise operating expense | ||||
| Total cruise operating expense | $ 196,495,000 | $ 199,421,000 | $ 381,126,000 | $ 391,875,000 |