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Related Parties - Narrative (Details) - USD ($) |  |  |  |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 29, 2021 | Jun. 25, 2021 | Mar. 01, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Aug. 22, 2018
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Shares issued for conversion (in shares) |  |  |  | 10,641,182 |  |  |  |  |
Shares repurchased (in shares) |  |  |  |  |  |  | 7,901,657 |  |
Sapphire Holdings Sale of Stock |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Shares repurchased (in shares) | 3,900,000 |  | 2,750,000 |  |  |  |  |  |
Sapphire Holding S.a. r.l. | Underwritten Secondary Offering |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Issuance of stock (in shares) |  | 16,100,000 |  |  |  |  |  |  |
Margin Loan | Sapphire Holding S.a. r.l. |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Debt, face amount |  |  |  |  |  |  |  |  | $ 125,000,000.0
Affiliates |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Purchases from affiliates |  |  |  |  | $ 700,000 | $ 1,400,000 | $ 2,500,000 | $ 1,600,000 |
WillScott Mobile Mini Holdings Corp and Subsidiaries | Sapphire Holding S.a. r.l. |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Percentage ownership |  |  |  |  | 10.30% |  | 10.30% |  |

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