XML 56 R45.htm IDEA: XBRL DOCUMENT
v3.20.2

Summary of Significant Accounting Policies - Gain (Loss) on Disposal (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 USD ($) facility | Sep. 30, 2019 USD ($) facility | Jun. 30, 2019 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($)
Property, Plant and Equipment [Line Items] |  |  |  |  |
Gain (loss) on disposition of property plant equipment | $ 75,800 | $ 9,300 |  | $ 78,200 | $ 17,100
Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Gain (loss) on disposition of property plant equipment | $ 76,400 |  |  |  |
Sale and lease back transaction gain loss net | facility | 2 |  |  |  |
Impairment of long-lived assets to be disposed |  |  | $ 24,800 |  |
United States | Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Gain (loss) on disposition of property plant equipment |  | $ 9,800 |  |  |
United Kingdom | Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Gain (loss) on disposition of property plant equipment |  |  | $ 36,000 |  |
Sale and lease back transaction gain loss net | facility |  | 5 |  |  |

X
- Definition Number Of Facilities In Sale-Leaseback Transaction + References No definition available. + Details
Name: | irm_NumberOfFacilitiesInSaleLeasebackTransaction
Namespace Prefix: | irm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
Name: | us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2611-110228 + Details
Name: | us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DisposalGroupClassificationAxis=us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_GB
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |