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Operating Segments and Geographic Information (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2024 USD ($) segment destination | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Segment Reporting Information [Line Items] |  |  |
Number of reportable segments | segment | 1 |  |
Number of operating segments | segment | 1 |  |
Number of destinations | destination | 33 |  |
Summarization of operating revenues by geographic regions |  |  |
Total operating revenue | $ | $ 9,279 | $ 9,615 | $ 9,158
Europe |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of destinations | destination | 5 |  |
Puerto Rico |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of destinations | destination | 3 |  |
U.S Virgin Islands |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of destinations | destination | 2 |  |
Domestic & Canada |  |  |
Summarization of operating revenues by geographic regions |  |  |
Total operating revenue | $ | $ 5,640 | 6,072 | 6,067
Caribbean & Latin America |  |  |
Summarization of operating revenues by geographic regions |  |  |
Total operating revenue | $ | 3,169 | 3,282 | 2,968
Atlantic |  |  |
Summarization of operating revenues by geographic regions |  |  |
Total operating revenue | $ | $ 470 | $ 261 | $ 123

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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 49 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-49 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-18 + Details
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