Cover Page - shares	3 Months Ended
	Mar. 31, 2022	Apr. 25, 2022
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
Document Transition Report	false
Entity File Number	001-37552
Entity Registrant Name	WILLSCOT MOBILE MINI HOLDINGS CORP.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	82-3430194
Entity Address, Address Line One	4646 E Van Buren St.
Entity Address, Address Line Two	Suite 400
Entity Address, City or Town	Phoenix
Entity Address, State or Province	AZ
Entity Address, Postal Zip Code	85008
City Area Code	480
Local Phone Number	894-6311
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		222,521,576
Amendment Flag	false
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Entity Central Index Key	0001647088
Current Fiscal Year End Date	--12-31
Common Stock, par value $0.0001 per share
Document Information [Line Items]
Title of 12(b) Security	Common Stock, par value $0.0001 per share
Trading Symbol	WSC
Security Exchange Name	NASDAQ
Warrants to purchase Common Stock
Document Information [Line Items]
Title of 12(b) Security	Warrants to purchase Common Stock(1)
Trading Symbol	WSCTW