Condensed Consolidated Statements of Stockholders' Equity and Group Equity (unaudited) - USD ($) $ in Thousands		Total	IPO	Private Placement	Common Stock	Common Stock IPO	Common Stock Private Placement	Additional Paid-In Capital	Additional Paid-In Capital IPO	Additional Paid-In Capital Private Placement	Accumulated Other Comprehensive Loss	Accumulated Deficit	Total Stockholders' Equity Attributable to WEBTOON Entertainment Inc.	Total Stockholders' Equity Attributable to WEBTOON Entertainment Inc. IPO	Total Stockholders' Equity Attributable to WEBTOON Entertainment Inc. Private Placement	Non-controlling Interests in Consolidated Subsidiaries	Group Equity
Beginning Balance at Dec. 31, 2022		$ 1,468,502			$ 10			$ 1,038,284			$ (36,667)	$ (212,033)	$ 789,594			$ 85,395	$ 593,513
Beginning Balance (in shares) at Dec. 31, 2022					97,091,692
Net Income (Loss)		(17,881)										(10,875)	(10,875)			(320)	(6,686)
Foreign currency translation adjustments, net of tax		(18,396)									(18,396)		(18,396)
Equity in income of equity method investees		(831)									(831)		(831)
Equity-based compensation		2,062						125					125			1,937
Ending Balance at Mar. 31, 2023		1,433,456			$ 10			1,038,409			(55,894)	(222,908)	759,617			87,012	586,827
Ending Balance (in shares) at Mar. 31, 2023					97,091,692
Net Income (Loss)		(19,667)										(13,167)	(13,167)			451	(6,951)
Foreign currency translation adjustments, net of tax		(16,209)									(16,209)		(16,209)
Equity in income of equity method investees		(25)									(25)		(25)
Equity-based compensation		559						142					142			417
Changes in scope of consolidation		(11,131)														(11,131)
Common control transaction					$ 1			628,316				(48,441)	579,876				$ (579,876)
Common control transaction (in shares)					12,413,458
Ending Balance at Jun. 30, 2023		1,386,983			$ 11			1,666,867			(72,128)	(284,516)	1,310,234			76,749
Ending Balance (in shares) at Jun. 30, 2023					109,505,150
Beginning Balance at Dec. 31, 2023		$ 1,306,047			$ 11			1,667,246			(54,824)	(363,292)	1,249,141			56,906
Beginning Balance (in shares) at Dec. 31, 2023		109,505,150			109,505,150
Net Income (Loss)		$ 6,136										6,192	6,192			(56)
Foreign currency translation adjustments, net of tax		(28,689)									(28,689)		(28,689)
Equity in income of equity method investees		(9)									(9)		(9)
Equity-based compensation		1,593						1,121					1,121			472
Changes in scope of consolidation		(3,861)														(3,861)
Ending Balance at Mar. 31, 2024		1,281,217			$ 11			1,668,367			(83,522)	(357,100)	1,227,756			53,461
Ending Balance (in shares) at Mar. 31, 2024					109,505,150
Net Income (Loss)		(76,748)										(76,885)	(76,885)			137
Foreign currency translation adjustments, net of tax		(20,486)									(20,486)		(20,486)
Issuance of common stock			$ 281,737	$ 50,000		$ 2	$ 0		$ 281,735	$ 50,000				$ 281,737	$ 50,000
Issuance of common stock (in shares)						15,000,000	2,380,952
Equity-based compensation	[1]	53,449						53,224					53,224			225
Ending Balance at Jun. 30, 2024		$ 1,569,169			$ 13			$ 2,053,326			$ (104,008)	$ (433,985)	$ 1,515,346			$ 53,823
Ending Balance (in shares) at Jun. 30, 2024		126,886,102			126,886,102

[1] During the three months ended June 30, 2024, the Company recorded a dividend of $17.3 million as a reduction in additional paid-in capital for stock options granted to NAVER's employees who did not provide services to the Company (See Note 1. Description of Business and Summary of Significant Accounting Policies for the definitions of the Company and NAVER).