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Employee Benefits and Compensation Plans - (Details) - shares	1 Months Ended		6 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2025	Dec. 31, 2024
Time-Based Awards
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share awards granted			4,637,034
Time-Based Awards \| Awarded in March 2025 \| Employee
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share awards granted		4,500,000
Share-based award, vesting period		3 years
Performance-Based RSU Awards
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share awards granted			1,107,504
Performance-Based RSU Awards \| Awarded in March 2025 \| Members of management team
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share awards granted		1,100,000
Restated 2013 Plan \| Maximum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
NCLH ordinary shares authorized				45,009,006
Restated 2013 Plan, Amended
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
NCLH ordinary shares authorized	48,009,006		48,009,006
Number of additional shares authorized	3,000,000