Reportable Operating Segments (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2023 USD ($) segment	Dec. 31, 2022 USD ($)	Mar. 31, 2023 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			6
Net sales	$ 1,560,307	$ 1,345,640	$ 3,328,005	$ 2,835,715
Income (loss) from operations	487,899	362,660	783,252	546,832
Assets	3,347,459		3,347,459		$ 2,556,203
Unallocated cash and cash equivalents	1,650,802		1,650,802		981,795
Unallocated deferred tax assets, net	68,950		68,950		72,592
Reportable segments
Segment Reporting Information [Line Items]
Assets	1,180,471		1,180,471		1,087,915
Reportable segments | UGG brand wholesale
Segment Reporting Information [Line Items]
Assets	387,631		387,631		261,683
Reportable segments | HOKA brand wholesale
Segment Reporting Information [Line Items]
Assets	385,832		385,832		446,450
Reportable segments | Teva brand wholesale
Segment Reporting Information [Line Items]
Assets	65,979		65,979		94,735
Reportable segments | Sanuk brand wholesale
Segment Reporting Information [Line Items]
Assets	28,582		28,582		41,405
Reportable segments | Other brands wholesale
Segment Reporting Information [Line Items]
Assets	22,662		22,662		24,448
Reportable segments | Direct-to-Consumer
Segment Reporting Information [Line Items]
Assets	289,785		289,785		219,194
Segment reconciling items
Segment Reporting Information [Line Items]
Income (loss) from operations	(151,165)	(114,140)	(408,158)	(330,478)
Unallocated cash and cash equivalents	1,650,802		1,650,802		981,795
Unallocated deferred tax assets, net	68,950		68,950		72,592
Corporate
Segment Reporting Information [Line Items]
Unallocated other corporate assets	447,236		447,236		$ 413,901
Wholesale | UGG brand wholesale
Segment Reporting Information [Line Items]
Net sales	402,876	374,082	976,262	873,249
Wholesale | HOKA brand wholesale
Segment Reporting Information [Line Items]
Net sales	252,222	223,872	776,042	678,792
Wholesale | Teva brand wholesale
Segment Reporting Information [Line Items]
Net sales	20,449	25,180	67,731	91,662
Wholesale | Sanuk brand wholesale
Segment Reporting Information [Line Items]
Net sales	2,140	3,040	11,958	18,826
Wholesale | Other brands wholesale
Segment Reporting Information [Line Items]
Net sales	24,474	20,169	55,763	49,721
Wholesale | Reportable segments | UGG brand wholesale
Segment Reporting Information [Line Items]
Income (loss) from operations	153,653	114,372	336,421	257,120
Wholesale | Reportable segments | HOKA brand wholesale
Segment Reporting Information [Line Items]
Income (loss) from operations	83,654	68,658	252,051	201,850
Wholesale | Reportable segments | Teva brand wholesale
Segment Reporting Information [Line Items]
Income (loss) from operations	2,047	3,976	10,637	19,206
Wholesale | Reportable segments | Sanuk brand wholesale
Segment Reporting Information [Line Items]
Income (loss) from operations	(3,886)	(1,048)	(3,430)	1,768
Wholesale | Reportable segments | Other brands wholesale
Segment Reporting Information [Line Items]
Income (loss) from operations	2,521	(1,851)	6,939	3,517
Direct-to-Consumer | Direct-to-Consumer
Segment Reporting Information [Line Items]
Net sales	858,146	699,297	1,440,249	1,123,465
Direct-to-Consumer | Reportable segments | Direct-to-Consumer
Segment Reporting Information [Line Items]
Income (loss) from operations	$ 401,075	$ 292,693	$ 588,792	$ 393,849