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v3.19.3

Subsequent Events (Details) - USD ($) $ in Thousands | 3 Months Ended | 27 Months Ended
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2021
Project Summit | Forecast |  |
Subsequent Event [Line Items] |  |
Restructuring costs pursuant to plan | $ 60,000 | $ 240,000

X
- Definition Amount of costs to be incurred pursuant to restructuring plan. + References No definition available. + Details
Name: | irm_RestructuringPlanCostsIncurredPursuantToPlan
Namespace Prefix: | irm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RestructuringPlanAxis=irm_ProjectSummitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |