Segment Data and Disaggregated Revenue - Net Revenues By Product Category and Distribution Channel (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Net revenues	$ 1,433,021	$ 1,429,456	$ 3,070,901	$ 3,825,907
Connected Fitness
Segment Reporting Information [Line Items]
Revenues	36,894	39,346	102,600	101,385
Net revenues	36,894	39,346	102,600	101,385
Corporate Other
Segment Reporting Information [Line Items]
Net revenues	218	6,125	3,495	14,337
Wholesale
Segment Reporting Information [Line Items]
Revenues	830,478	891,709	1,721,432	2,417,028
Direct to Consumer
Segment Reporting Information [Line Items]
Revenues	540,310	462,674	1,192,130	1,216,590
Apparel
Segment Reporting Information [Line Items]
Revenues	927,041	985,623	1,951,186	2,499,989
Footwear
Segment Reporting Information [Line Items]
Revenues	298,687	250,596	693,464	827,223
Accessories
Segment Reporting Information [Line Items]
Revenues	145,060	118,164	268,912	306,406
Net Sales
Segment Reporting Information [Line Items]
Revenues	1,370,788	1,354,383	2,913,562	3,633,618
License revenues
Segment Reporting Information [Line Items]
Revenues	$ 25,121	$ 29,602	$ 51,244	$ 76,567