Reportable Operating Segments - Schedule of Reconciliation of Assets from Segment to Consolidated (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Mar. 31, 2020
Reconciliations of total assets from reportable segments to the condensed consolidated balance sheets
Unallocated cash and cash equivalents	$ 1,089,361	$ 649,436
Unallocated deferred tax assets, net	37,194	28,233
Total assets	2,167,705	1,765,118
Reportable segments
Reconciliations of total assets from reportable segments to the condensed consolidated balance sheets
Total assets	721,060	775,840
Corporate
Reconciliations of total assets from reportable segments to the condensed consolidated balance sheets
Unallocated other corporate assets	320,090	311,609
UGG brand wholesale | Reportable segments
Reconciliations of total assets from reportable segments to the condensed consolidated balance sheets
Total assets	212,277	245,239
HOKA brand wholesale | Reportable segments
Reconciliations of total assets from reportable segments to the condensed consolidated balance sheets
Total assets	168,365	124,958
Teva brand wholesale | Reportable segments
Reconciliations of total assets from reportable segments to the condensed consolidated balance sheets
Total assets	87,284	90,305
Sanuk brand wholesale | Reportable segments
Reconciliations of total assets from reportable segments to the condensed consolidated balance sheets
Total assets	38,311	50,314
Other brands wholesale | Reportable segments
Reconciliations of total assets from reportable segments to the condensed consolidated balance sheets
Total assets	18,732	21,535
Direct-to-Consumer | Reportable segments
Reconciliations of total assets from reportable segments to the condensed consolidated balance sheets
Total assets	$ 196,091	$ 243,489