Leases - Narrative (Details) - USD ($)	3 Months Ended			6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2016
Lessee, Lease, Description [Line Items]
Right-of-use assets, impairment	$ 13,300,000	$ 45,900,000
Variable lease cost	0		$ 21,500,000	$ 25,600,000	$ 55,800,000
Pullmantur Holdings
Lessee, Lease, Description [Line Items]
Percentage of subsidiary which has been sold						51.00%
Port of Miami Terminal
Lessee, Lease, Description [Line Items]
Cash collateral	$ 181,100,000			$ 181,100,000
Minimum | Real Estate
Lessee, Lease, Description [Line Items]
Renewal term	1 year			1 year
Minimum | Berthing Agreement
Lessee, Lease, Description [Line Items]
Renewal term	1 year			1 year
Maximum | Real Estate
Lessee, Lease, Description [Line Items]
Renewal term	10 years			10 years
Maximum | Berthing Agreement
Lessee, Lease, Description [Line Items]
Renewal term	20 years			20 years