XML 188 R83.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Stockholders' Equity Matters - Additional Information (Details) - $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 24, 2022 | Nov. 04, 2021 | Aug. 05, 2021 | May 06, 2021 | Feb. 24, 2021 | Nov. 04, 2020 | Aug. 05, 2020 | May 05, 2020 | Feb. 13, 2020 | Oct. 31, 2019 | Jul. 26, 2019 | May 22, 2019 | Feb. 07, 2019 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends per share (in dollars per share) |  | $ 0.6185 | $ 0.6185 | $ 0.6185 | $ 0.6185 | $ 0.6185 | $ 0.6185 | $ 0.6185 | $ 0.6185 | $ 0.6185 | $ 0.6110 | $ 0.6110 | $ 0.6110 | $ 2.47 | $ 2.47 | $ 2.45
Percent of dividends paid |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% | 100.00% | 100.00%
Capital gains |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percent of dividends paid |  |  |  |  |  |  |  |  |  |  |  |  |  | 21.80% | 49.50% | 14.70%
Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends per share (in dollars per share) | $ 0.6185 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

X
- Definition Represents the percentage of total dividends paid. + References No definition available. + Details
Name: | irm_PercentageOfTotalDividendsPaid
Namespace Prefix: | irm_
Data Type: | dtr-types:percentItemType
Balance Type: | na
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_ClassOfStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
Name: | us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DividendsAxis=irm_CapitalGainsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |