Net Income (Loss) Per Share - Summary of Computation of Basic EPS and Diluted EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Numerator
Net income (loss) attributable to Viking Holdings Ltd	$ 439,048	$ 159,619	$ 333,575	$ (331,379)
Net income (loss) allocated to shares other than ordinary shares and special shares	0	21,075	0	(102,516)
Net income (loss) allocated to ordinary shares and special shares - Basic	439,048	138,544	333,575	(228,863)
Reallocation of income	0	317	0	0
Net income (loss) of ordinary shares and special shares - Diluted	$ 439,048	$ 138,861	$ 333,575	$ (228,863)
Denominator
Weighted-average ordinary shares and special shares - Basic	443,227	364,787	443,070	293,362
Dilutive effect of stock based awards	2,322	2,401	2,238	0
Weighted-average ordinary shares and special shares - Diluted	445,549	367,188	445,308	293,362
Basic EPS	$ 0.99	$ 0.38	$ 0.75	$ (0.78)
Diluted EPS	$ 0.99	$ 0.38	$ 0.75	$ (0.78)

The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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