Profits interest incentive plan - Schedule of Nonvested Share Activity (Details)	12 Months Ended
	Dec. 31, 2020 shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Unvested at December 31, 2019	6,158,328
Cancelled	(170,836)
Vested	(1,310,807)
Assumption of unvested Class B units by Himalaya Parent LLC on July 10, 2020	(4,676,685)
Unvested at December 31, 2020	0