XML 181 R138.htm IDEA: XBRL DOCUMENT
v3.22.2

Stockholders' Equity Matters - Classification of Dividends Paid (Details) | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Class of Stock [Line Items] |  |  |
Percent of dividends paid | 100.00% | 100.00% | 100.00%
Nonqualified ordinary dividends |  |  |
Class of Stock [Line Items] |  |  |
Percent of dividends paid | 53.90% | 43.00% | 54.80%
Qualified ordinary dividends |  |  |
Class of Stock [Line Items] |  |  |
Percent of dividends paid | 13.00% | 0.00% | 4.50%
Capital gains |  |  |
Class of Stock [Line Items] |  |  |
Percent of dividends paid | 21.80% | 49.50% | 14.70%
Return of capital |  |  |
Class of Stock [Line Items] |  |  |
Percent of dividends paid | 11.30% | 7.50% | 26.00%

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

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

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

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