REPORTABLE OPERATING SEGMENTS - Schedule of Operating Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024
Segment Reporting Information [Line Items]
Net sales	$ 1,957,549	$ 1,827,165	$ 4,352,927	$ 3,963,832
Less: Cost of sales	786,189	724,542	1,839,839	1,657,937
Gross profit	$ 1,171,360	$ 1,102,623	$ 2,513,088	$ 2,305,895
Segment gross margin	59.80%	60.30%	57.70%	58.20%
Less:
Payroll and related costs	$ 83,676	$ 74,095	$ 225,356	$ 192,637
Advertising, marketing, and promotion expenses	162,396	144,054	376,355	333,601
Rent and occupancy	38,528	32,912	93,729	77,361
Depreciation and other related costs	5,219	3,994	14,421	15,498
Other segment items	71,443	64,409	181,592	146,407
Segment SG&A expenses	361,262	319,464	891,453	765,504
Segment income from operations	$ 810,098	$ 783,159	$ 1,621,635	$ 1,540,391
Segment operating margin	41.40%	42.90%	37.30%	38.90%
HOKA | Reportable segments
Segment Reporting Information [Line Items]
Net sales	$ 628,882	$ 530,908	$ 1,916,087	$ 1,646,982
Less: Cost of sales	274,678	233,030	820,182	691,678
Gross profit	$ 354,204	$ 297,878	$ 1,095,905	$ 955,304
Segment gross margin	56.30%	56.10%	57.20%	58.00%
Less:
Payroll and related costs	$ 33,681	$ 26,003	$ 94,625	$ 72,088
Advertising, marketing, and promotion expenses	63,439	56,396	191,008	168,275
Rent and occupancy	11,826	7,310	31,305	19,827
Depreciation and other related costs	2,273	1,372	5,356	3,779
Other segment items	26,891	19,864	82,692	58,923
Segment SG&A expenses	138,110	110,945	404,986	322,892
Segment income from operations	$ 216,094	$ 186,933	$ 690,919	$ 632,412
Segment operating margin	34.40%	35.20%	36.10%	38.40%
UGG | Reportable segments
Segment Reporting Information [Line Items]
Net sales	$ 1,305,475	$ 1,244,189	$ 2,330,154	$ 2,157,005
Less: Cost of sales	496,554	460,738	960,370	875,735
Gross profit	$ 808,921	$ 783,451	$ 1,369,784	$ 1,281,270
Segment gross margin	62.00%	63.00%	58.80%	59.40%
Less:
Payroll and related costs	$ 45,409	$ 43,864	$ 117,160	$ 107,387
Advertising, marketing, and promotion expenses	96,669	81,537	171,941	144,989
Rent and occupancy	26,677	25,523	62,343	57,183
Depreciation and other related costs	2,940	2,505	9,014	7,393
Other segment items	47,297	41,160	93,141	77,223
Segment SG&A expenses	218,992	194,589	453,599	394,175
Segment income from operations	$ 589,929	$ 588,862	$ 916,185	$ 887,095
Segment operating margin	45.20%	47.30%	39.30%	41.10%
Other Brands | Reportable segments
Segment Reporting Information [Line Items]
Net sales	$ 23,192	$ 52,068	$ 106,686	$ 159,845
Less: Cost of sales	14,957	30,774	59,287	90,524
Gross profit	$ 8,235	$ 21,294	$ 47,399	$ 69,321
Segment gross margin	35.50%	40.90%	44.40%	43.40%
Less:
Payroll and related costs	$ 4,586	$ 4,228	$ 13,571	$ 13,162
Advertising, marketing, and promotion expenses	2,288	6,121	13,406	20,337
Rent and occupancy	25	79	81	351
Depreciation and other related costs	6	117	51	4,326
Other segment items	(2,745)	3,385	5,759	10,261
Segment SG&A expenses	4,160	13,930	32,868	48,437
Segment income from operations	$ 4,075	$ 7,364	$ 14,531	$ 20,884
Segment operating margin	17.60%	14.10%	13.60%	13.10%