XML 119 R72.htm IDEA: XBRL DOCUMENT
v3.20.4

Debt - Cash Pooling (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) cash_pool | Dec. 31, 2019 USD ($)
Debt Instrument [Line Items] |  |
Number of cash pools | cash_pool | 2 |
Credit Agreement |  |
Debt Instrument [Line Items] |  |
Letters of credit outstanding | $ 36,160,000 |
Credit Agreement | Revolving Credit Facility |  |
Debt Instrument [Line Items] |  |
Letters of credit outstanding | $ 3,232,000 |
QRS Cash Pool |  |
Debt Instrument [Line Items] |  |
Number of cash pools | cash_pool | 1 |
Cash Pool Agreement, Borrowings, Maximum | $ 10,000,000 |
GROSS CASH POSITION | 448,700,000 | $ 372,100,000
OUTSTANDING DEBIT BALANCES | (447,400,000) | (369,000,000)
NET CASH POSITION | $ 1,300,000 | 3,100,000
TRS Cash Pool |  |
Debt Instrument [Line Items] |  |
Number of cash pools | cash_pool | 1 |
GROSS CASH POSITION | $ 555,500,000 | 319,800,000
OUTSTANDING DEBIT BALANCES | (553,500,000) | (301,300,000)
NET CASH POSITION | $ 2,000,000 | $ 18,500,000

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- Definition Cash Pool Agreement, Borrowings, Gross + References No definition available. + Details
Name: | irm_CashPoolAgreementBorrowingsGross
Namespace Prefix: | irm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Cash Pool Agreement, Borrowings, Maximum + References No definition available. + Details
Name: | irm_CashPoolAgreementBorrowingsMaximum
Namespace Prefix: | irm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Cash Pool Agreement, Cash Position, Net + References No definition available. + Details
Name: | irm_CashPoolAgreementCashPositionNet
Namespace Prefix: | irm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Cash Pool Agreement, Number Of Cash Pools + References No definition available. + Details
Name: | irm_CashPoolAgreementNumberOfCashPools
Namespace Prefix: | irm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Cash Pool Agreement, Outstanding Borrowings + References No definition available. + Details
Name: | irm_CashPoolAgreementOutstandingBorrowings
Namespace Prefix: | irm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- 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_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_DebtInstrumentAxis=irm_QRSCashPoolMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |