Debt	3 Months Ended
Mar. 31, 2019
Debt Disclosure [Abstract]
Debt	Debt In June 2018, we established a commercial paper program pursuant to which we may issue short-term unsecured notes from time to time in an aggregate amount of up to $1.2 billion. The interest rate for the commercial paper notes varies based on duration, market conditions and our credit ratings. The maturities of the commercial paper notes can vary, but cannot exceed 397 days from the date of issuance. We use the proceeds from our commercial paper notes for general corporate purposes. The commercial paper issued is backstopped by our revolving credit facilities. As of March 31, 2019, we had $1.1 billion of commercial paper notes outstanding with a weighted average interest rate of 3.04% and a weighted average maturity of approximately 34 days. As of December 31, 2018, we had $777.0 million of commercial paper notes outstanding with a weighted average interest rate of 3.19% and a weighted average maturity of approximately 23 days. In April 2019, we amended our $1.4 billion unsecured revolving credit facility due in 2020 to extend the termination date through April 2024 and increase the facility size to $1.7 billion. The interest rate and facility fee vary with our senior debt rating and are currently set at LIBOR plus 1.0% per annum and 0.125% per annum, respectively. These amendments did not result in the extinguishment of debt. In April 2019, we entered into and drew in full on an unsecured three-year term loan agreement in the amount of $1.0 billion. The loan accrues interest at a floating rate of LIBOR plus an applicable margin, which varies with our senior debt rating, and is currently 1.075% per annum. Proceeds of this loan were used to repay the $700 million 364-day loan due July 2019 related to the acquisition of Silversea Cruises and the remaining balance of the unsecured term loan originally incurred in 2010 to purchase Allure of the Seas. The repayment of these loans resulted in a total loss on the extinguishment of debt of approximately $6.5 million, which will be recognized in the statement of comprehensive income (loss) subsequent to March 31, 2019. In April 2019, we took delivery of Spectrum of the Seas. To finance the purchase, we borrowed $908.0 million under a previously committed unsecured term loan which is 95% guaranteed by Euler Hermes Deutschland AG, the official export credit agency of Germany. The loan amortizes semi-annually over 12 years and bears interest at a fixed rate of 3.45% per annum.

Debt

In June 2018, we established a commercial paper program pursuant to which we may issue short-term unsecured notes from time to time in an aggregate amount of up to $1.2 billion. The interest rate for the commercial paper notes varies based on duration, market conditions and our credit ratings. The maturities of the commercial paper notes can vary, but cannot exceed 397 days from the date of issuance. We use the proceeds from our commercial paper notes for general corporate purposes. The commercial paper issued is backstopped by our revolving credit facilities. As of March 31, 2019, we had $1.1 billion of commercial paper notes outstanding with a weighted average interest rate of 3.04% and a weighted average maturity of approximately 34 days. As of December 31, 2018, we had $777.0 million of commercial paper notes outstanding with a weighted average interest rate of 3.19% and a weighted average maturity of approximately 23 days.

In April 2019, we amended our $1.4 billion unsecured revolving credit facility due in 2020 to extend the termination date through April 2024 and increase the facility size to $1.7 billion. The interest rate and facility fee vary with our senior debt rating and are currently set at LIBOR plus 1.0% per annum and 0.125% per annum, respectively. These amendments did not result in the extinguishment of debt.

In April 2019, we entered into and drew in full on an unsecured three-year term loan agreement in the amount of $1.0 billion. The loan accrues interest at a floating rate of LIBOR plus an applicable margin, which varies with our senior debt rating, and is currently 1.075% per annum. Proceeds of this loan were used to repay the $700 million 364-day loan due July 2019 related to the acquisition of Silversea Cruises and the remaining balance of the unsecured term loan originally incurred in 2010 to purchase Allure of the Seas. The repayment of these loans resulted in a total loss on the extinguishment of debt of approximately $6.5 million, which will be recognized in the statement of comprehensive income (loss) subsequent to March 31, 2019.

In April 2019, we took delivery of Spectrum of the Seas. To finance the purchase, we borrowed $908.0 million under a previously committed unsecured term loan which is 95% guaranteed by Euler Hermes Deutschland AG, the official export credit agency of Germany. The loan amortizes semi-annually over 12 years and bears interest at a fixed rate of 3.45% per annum.