Description of Business and Organization (Detail Textuals)	Jun. 30, 2019 item
Description Of Business And Organization [Line Items]
Number of cruises ships	26
Capacity of ship, berths	54,400
Ships Launching Period Through 2027
Description Of Business And Organization [Line Items]
Number of additional ships	11
Ships Launching Period Through 2027 | Project Leonardo Ships
Description Of Business And Organization [Line Items]
Increased number of berths	82,000
Ships Launching Period In 2022 And 2027 | Project Leonardo Ships
Description Of Business And Organization [Line Items]
Number of additional ships	6
Ships Launching Period Through 2022 And 2025
Description Of Business And Organization [Line Items]
Number of additional ships	2
Ships launching winter 2020 and fall 2023
Description Of Business And Organization [Line Items]
Number of additional ships	2
Ship launching fall-winter 2019
Description Of Business And Organization [Line Items]
Number of additional ships	1