Summary of Significant Accounting Policies	6 Months Ended
Jun. 30, 2014
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Recent Accounting Pronouncements In January 2014, amended guidance was issued regarding the accounting for service concession arrangements. The new guidance defines a service concession as an arrangement between a public-sector entity grantor and an operating entity under which the operating entity operates and maintains the grantor’s infrastructure for a specified period of time and in return receives payments from the grantor and or third party user for use of the infrastructure. The guidance prohibits the operating entity from accounting for a service concession arrangement as a lease and from recording the infrastructure used in the arrangement within property plant and equipment. This guidance must be applied using a modified retrospective approach and will be effective for our interim and annual reporting periods beginning after December 15, 2014. Early adoption is permitted. The adoption of this newly issued guidance is not expected to have a material impact on our consolidated financial statements. In April 2014, amended guidance was issued changing the requirements for reporting discontinued operations and enhancing the disclosures in this area. The new guidance requires a disposal of a component of an entity or a group of components of an entity to be reported in discontinued operations if the disposal represents a strategic shift that has (or will have) a major effect on an entity's operations and financial results. The guidance will be effective prospectively for our interim and annual reporting periods beginning after December 15, 2014. The guidance will impact the reporting and disclosures of future disposals, if any. In May 2014, amended guidance was issued to clarify the principles used to recognize revenue for all entities. The guidance is based on the principle that revenue should be recognized to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard also requires more detailed disclosures and provides additional guidance for transactions that were not comprehensively addressed in the prior accounting guidance. This guidance must be applied using one of two retrospective application methods and will be effective for our interim and annual reporting periods beginning after December 15, 2016. Early adoption is not permitted. We are currently evaluating the impact of the adoption of this newly issued guidance on our consolidated financial statements. Reclassifications For the quarter and six months ended June 30, 2013, $1.7 million has been reclassified in the consolidated statements of comprehensive income (loss) from Marketing, selling and administrative expenses to Restructuring Charges to conform to the current year presentation. Other Revenues and expenses include port costs that vary with guest head counts. The amounts of such port costs included in passenger ticket revenues on a gross basis were $137.7 million and $117.0 million for the second quarters of 2014 and 2013, respectively, and $261.8 million and $232.7 million for the six months ended June 30, 2014 and 2013, respectively. During the second quarter of 2013, we recorded an out-of-period adjustment of approximately $15.2 million to correct an error in the calculation of our liability for our credit card rewards program which understated the liability and overstated income during the fiscal years 2003 through 2013. Because the adjustment, both individually and in the aggregate, was not material to any of the prior years’ financial statements, and the impact of correcting the error was not material to the full year 2013 financial statements, we recorded the correction in the financial statements in the second quarter of 2013. This amount reduced onboard and other revenues in our consolidated statements of comprehensive income (loss).

Summary of Significant Accounting Policies

Recent Accounting Pronouncements

In January 2014, amended guidance was issued regarding the accounting for service concession arrangements. The new guidance defines a service concession as an arrangement between a public-sector entity grantor and an operating entity under which the operating entity operates and maintains the grantor’s infrastructure for a specified period of time and in return receives payments from the grantor and or third party user for use of the infrastructure. The guidance prohibits the operating entity from accounting for a service concession arrangement as a lease and from recording the infrastructure used in the arrangement within property plant and equipment. This guidance must be applied using a modified retrospective approach and will be effective for our interim and annual reporting periods beginning after December 15, 2014. Early adoption is permitted. The adoption of this newly issued guidance is not expected to have a material impact on our consolidated financial statements.

In April 2014, amended guidance was issued changing the requirements for reporting discontinued operations and enhancing the disclosures in this area. The new guidance requires a disposal of a component of an entity or a group of components of an entity to be reported in discontinued operations if the disposal represents a strategic shift that has (or will have) a major effect on an entity's operations and financial results. The guidance will be effective prospectively for our interim and annual reporting periods beginning after December 15, 2014. The guidance will impact the reporting and disclosures of future disposals, if any.

In May 2014, amended guidance was issued to clarify the principles used to recognize revenue for all entities. The guidance is based on the principle that revenue should be recognized to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard also requires more detailed disclosures and provides additional guidance for transactions that were not comprehensively addressed in the prior accounting guidance. This guidance must be applied using one of two retrospective application methods and will be effective for our interim and annual reporting periods beginning after December 15, 2016. Early adoption is not permitted. We are currently evaluating the impact of the adoption of this newly issued guidance on our consolidated financial statements.

Reclassifications

For the quarter and six months ended June 30, 2013, $1.7 million has been reclassified in the consolidated statements of comprehensive income (loss) from Marketing, selling and administrative expenses to Restructuring Charges to conform to the current year presentation.

Other

Revenues and expenses include port costs that vary with guest head counts. The amounts of such port costs included in passenger ticket revenues on a gross basis were $137.7 million and $117.0 million for the second quarters of 2014 and 2013, respectively, and $261.8 million and $232.7 million for the six months ended June 30, 2014 and 2013, respectively.

During the second quarter of 2013, we recorded an out-of-period adjustment of approximately $15.2 million to correct an error in the calculation of our liability for our credit card rewards program which understated the liability and overstated income during the fiscal years 2003 through 2013. Because the adjustment, both individually and in the aggregate, was not material to any of the prior years’ financial statements, and the impact of correcting the error was not material to the full year 2013 financial statements, we recorded the correction in the financial statements in the second quarter of 2013. This amount reduced onboard and other revenues in our consolidated statements of comprehensive income (loss).