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Other Assets (Narrative) (Details) $ in Thousands, € in Millions | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Apr. 30, 2016 | Mar. 31, 2009 USD ($) | Mar. 31, 2009 EUR (€) | Dec. 31, 2018 USD ($) | Dec. 31, 2018 EUR (€) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2018 EUR (€) | Dec. 31, 2017 EUR (€) | Jul. 31, 2016
Other Assets |  |  |  |  |  |  |  |  |  |
Proceeds from the sale of property and equipment |  |  |  | $ 0 |  | $ 230,000 | $ 0 |  |  |
Gain on sale of equipment |  |  |  | 21,794 |  | 0 | 0 |  |  |
Principal and Interest payments received |  |  |  | $ 124,238 |  | 62,303 | $ 38,213 |  |  |
TUI Cruises GmbH joint venture |  |  |  |  |  |  |  |  |  |
Other Assets |  |  |  |  |  |  |  |  |  |
Investment in a joint venture, percentage of interest |  |  |  | 50.00% |  |  |  | 50.00% |  |
Equity and loans due from equity method investee |  |  |  | $ 578,100 |  | 624,500 |  |  |  |
Equity investment |  |  |  | 403,000 |  | 422,800 |  |  |  |
Loan investment |  |  |  | $ 172,200 |  | 199,800 |  | € 150.6 | € 166.5 |
Related party guarantor obligation percentage |  |  |  | 50.00% | 50.00% |  |  |  |  |
Amount outstanding under line of credit provided to TUI Cruises |  |  |  | $ 42,300 |  |  |  | € 37.0 |  |
Repayments of related party debt | € |  |  |  |  | € 44.2 |  |  |  |  |
Proceeds from the sale of property and equipment |  | $ 290,900 | € 224.4 |  |  |  |  |  |  |
Deferred gain on sale |  | $ 35,900 |  |  |  |  |  |  |  |
Gain on sale of equipment |  |  |  | $ 21,800 |  |  |  |  |  |
Pullmantur |  |  |  |  |  |  |  |  |  |
Other Assets |  |  |  |  |  |  |  |  |  |
Investment in a joint venture, percentage of interest |  |  |  | 49.00% |  |  |  | 49.00% |  |
Loan investment |  |  |  | $ 17,200 |  |  |  | € 15.0 |  |
Interest rate on debt facility provided to related party (as a percent) |  |  |  | 6.50% |  |  |  | 6.50% |  |
Related party guarantor obligation percentage |  |  |  | 51.00% | 51.00% |  |  |  |  |
Retained ownership percentage of subsidiary after sale |  |  |  | 49.00% | 49.00% |  |  |  |  |
Maximum loss exposure |  |  |  | $ 58,500 |  | 53,700 |  |  |  |
Line of credit outstanding |  |  |  | $ 16,000 |  |  |  | € 14.0 |  |
Percentage of subsidiary which has been sold |  |  |  | 51.00% |  |  | 51.00% | 51.00% |  | 51.00%
Grand Bahamas Shipyard Ltd. | Not Primary Beneficiary |  |  |  |  |  |  |  |  |  |
Other Assets |  |  |  |  |  |  |  |  |  |
Investment in a joint venture, percentage of interest |  |  |  | 40.00% |  |  |  | 40.00% |  |
Payments to related parties for services provided |  |  |  | $ 44,700 |  | 16,000 |  |  |  |
Net book value of equity method investment |  |  |  | 56,100 |  | 49,400 |  |  |  |
Principal and Interest payments received |  |  |  | $ 16,400 |  |  |  |  |  |
Grand Bahamas Shipyard Ltd. | Not Primary Beneficiary | Non-accrual status of advances to affiliates |  |  |  |  |  |  |  |  |  |
Other Assets |  |  |  |  |  |  |  |  |  |
Interest rate on debt facility provided to related party (as a percent) |  |  |  | 5.50% |  |  |  | 5.50% |  |
Principal and Interest payments received |  |  |  |  |  | 15,700 |  |  |  |
Grand Bahamas Shipyard Ltd. | Not Primary Beneficiary | Equity |  |  |  |  |  |  |  |  |  |
Other Assets |  |  |  |  |  |  |  |  |  |
Equity investment |  |  |  | $ 41,400 |  | 32,400 |  |  |  |
Grand Bahamas Shipyard Ltd. | Not Primary Beneficiary | Loans Receivable |  |  |  |  |  |  |  |  |  |
Other Assets |  |  |  |  |  |  |  |  |  |
Loan investment |  |  |  | 14,600 |  | 17,000 |  |  |  |
Skysea Holding |  |  |  |  |  |  |  |  |  |
Other Assets |  |  |  |  |  |  |  |  |  |
Equity method investment impairment |  |  |  | $ 23,300 |  |  |  |  |  |
Skysea Holding | Not Primary Beneficiary |  |  |  |  |  |  |  |  |  |
Other Assets |  |  |  |  |  |  |  |  |  |
Investment in a joint venture, percentage of interest |  |  |  | 36.00% |  |  |  | 36.00% |  |
Equity investment |  |  |  |  |  | 4,400 |  |  |  |
Loan investment |  |  |  |  |  | 91,600 |  |  |  |
Interest rate on debt facility provided to related party (as a percent) |  |  |  | 6.50% |  |  |  | 6.50% |  |
Net book value of equity method investment |  |  |  |  |  | $ 96,000 |  |  |  |
Debt facility due from subsidiary |  |  |  | $ 80,000 |  |  |  |  |  |
Conditional guarantee commitment percentage |  |  |  | 100.00% | 100.00% |  |  |  |  |
London Interbank Offered Rate (LIBOR) | Grand Bahamas Shipyard Ltd. | Not Primary Beneficiary | Non-accrual status of advances to affiliates |  |  |  |  |  |  |  |  |  |
Other Assets |  |  |  |  |  |  |  |  |  |
Margin on floating rate base (as a percent) |  |  |  | 3.50% | 3.50% |  |  |  |  |
Splendor of the Seas | TUI Cruises GmbH joint venture |  |  |  |  |  |  |  |  |  |
Other Assets |  |  |  |  |  |  |  |  |  |
Interest rate on debt facility provided to related party (as a percent) | 6.25% |  |  |  |  |  |  |  |  |
Debt instrument, term | 10 years |  |  |  |  |  |  |  |  |
Related party guarantor obligation percentage | 50.00% |  |  |  |  |  |  |  |  |
Springwater Capital LLC | Pullmantur |  |  |  |  |  |  |  |  |  |
Other Assets |  |  |  |  |  |  |  |  |  |
Investment in a joint venture, percentage of interest |  |  |  | 51.00% |  |  |  | 51.00% |  |
TUI cruise ships | TUI Cruises GmbH joint venture |  |  |  |  |  |  |  |  |  |
Other Assets |  |  |  |  |  |  |  |  |  |
Reduction of current ownership interest, minimum allowed (as a percent) |  |  |  | 37.55% |  |  |  | 37.55% |  |
Mein Schiff 1 |  |  |  |  |  |  |  |  |  |
Other Assets |  |  |  |  |  |  |  |  |  |
Property, plant and equipment, useful life |  | 23 years | 23 years |  |  |  |  |  |  |

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