Reportable Operating Segments (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2021 USD ($) segment	Dec. 31, 2020 USD ($)	Mar. 31, 2021 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			6
Net sales	$ 1,187,752	$ 1,077,759	$ 2,414,332	$ 1,984,453
Income (loss) from operations	293,396	328,655	483,409	449,560
Total assets	2,547,568		2,547,568		$ 2,167,705
Unallocated cash and cash equivalents	998,261		998,261		1,089,361
Unallocated deferred tax assets, net	40,881		40,881		37,194
Reportable segments
Segment Reporting Information [Line Items]
Total assets	1,116,850		1,116,850		721,060
Reportable segments | UGG brand wholesale
Segment Reporting Information [Line Items]
Total assets	550,960		550,960		212,277
Reportable segments | HOKA brand wholesale
Segment Reporting Information [Line Items]
Total assets	216,652		216,652		168,365
Reportable segments | Teva brand wholesale
Segment Reporting Information [Line Items]
Total assets	53,634		53,634		87,284
Reportable segments | Sanuk brand wholesale
Segment Reporting Information [Line Items]
Total assets	35,132		35,132		38,311
Reportable segments | Other brands wholesale
Segment Reporting Information [Line Items]
Total assets	50,930		50,930		18,732
Reportable segments | Direct-to-Consumer
Segment Reporting Information [Line Items]
Total assets	209,542		209,542		196,091
Segment reconciling items
Segment Reporting Information [Line Items]
Income (loss) from operations	(111,541)	(87,742)	(282,344)	(214,390)
Unallocated cash and cash equivalents	998,261		998,261		1,089,361
Unallocated deferred tax assets, net	40,881		40,881		37,194
Corporate
Segment Reporting Information [Line Items]
Unallocated other corporate assets	391,576		391,576		$ 320,090
Wholesale | UGG brand wholesale
Segment Reporting Information [Line Items]
Net sales	432,093	408,859	915,925	744,281
Wholesale | HOKA brand wholesale
Segment Reporting Information [Line Items]
Net sales	122,636	100,893	420,763	279,629
Wholesale | Teva brand wholesale
Segment Reporting Information [Line Items]
Net sales	16,287	12,107	78,857	51,264
Wholesale | Sanuk brand wholesale
Segment Reporting Information [Line Items]
Net sales	3,138	3,829	20,540	17,142
Wholesale | Other brands wholesale
Segment Reporting Information [Line Items]
Net sales	24,247	32,182	51,806	60,489
Wholesale | Reportable segments | UGG brand wholesale
Segment Reporting Information [Line Items]
Income (loss) from operations	126,085	158,358	283,624	261,349
Wholesale | Reportable segments | HOKA brand wholesale
Segment Reporting Information [Line Items]
Income (loss) from operations	18,039	26,995	107,696	78,056
Wholesale | Reportable segments | Teva brand wholesale
Segment Reporting Information [Line Items]
Income (loss) from operations	2,188	1,029	21,599	9,993
Wholesale | Reportable segments | Sanuk brand wholesale
Segment Reporting Information [Line Items]
Income (loss) from operations	(31)	17	4,896	1,644
Wholesale | Reportable segments | Other brands wholesale
Segment Reporting Information [Line Items]
Income (loss) from operations	1,139	9,256	12,004	17,855
Direct-to-Consumer | Direct-to-Consumer
Segment Reporting Information [Line Items]
Net sales	589,351	519,889	926,441	831,648
Direct-to-Consumer | Reportable segments | Direct-to-Consumer
Segment Reporting Information [Line Items]
Income (loss) from operations	$ 257,517	$ 220,742	$ 335,934	$ 295,053