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Unsecured Debt (Details) € in Millions, £ in Millions, $ in Millions | 1 Months Ended |
--- | --- | ---
May 31, 2016 EUR (€) credit_facility CruiseShip | Apr. 30, 2016 USD ($) | Feb. 29, 2016 USD ($) | May 31, 2016 GBP (£) | May 31, 2016 USD ($)
Debt Instrument [Line Items] |  |  |  |  |
Weighted average interest rate (as a percent) | 0.80% |  |  | 0.80% | 0.80%
Proceeds from Lines of Credit |  | $ 379 |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  | $ 2,300
Number of cruise ships purchased | CruiseShip | 4 |  |  |  |
Line of Credit |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Number of export credit facilities | credit_facility | 4 |  |  |  |
Revolving Credit Facility |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  | 2,700
Revolving Credit Facility | United States of America, Dollars |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  | 1,900
Revolving Credit Facility | Euro Member Countries, Euro |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | € | € 500 |  |  |  |
Revolving Credit Facility | United Kingdom, Pounds |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | £ |  |  |  | £ 169 |
Commercial Paper |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Short-term borrowings |  |  |  |  | 406
Euro-denominated | Bank Loans |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Short-term borrowings |  |  |  |  | $ 4
Publicly Traded Notes Euro-denominated Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Proceeds from issuance of notes |  |  | $ 555 |  |
Notes, interest rate (percentage) | 1.625% |  |  | 1.625% | 1.625%

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- Definition Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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