Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Leases [Abstract]
Lease impairment expense and other related charges	$ 263	$ 1,253
Impairment charges and loss on lease exit		500
Closed location rent expense		$ 800

Operating Lease, Impairment Loss and Loss (Gain) on Termination of Lease

No definition available.

Name:	wsc_OperatingLeaseImpairmentLossAndLossGainOnTerminationOfLease
Namespace Prefix:	wsc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration