XML 54 R42.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Summary of Significant Accounting Policies - Schedule of Changes in Carrying Value of Goodwill, by Reportable Operating Segment (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2018 | Dec. 31, 2017
Gross amount of goodwill [Roll Forward] |  |
Beginning balance | $ 4,386,861 |
Non-deductible goodwill acquired during the year | 448,698 |
Fair value and other adjustments | 12,125 |
Currency effects | (65,102) |
Ending balance | 4,782,582 |
Goodwill accumulated amortization [Roll Forward] |  |
Accumulated amortization. beginning balance | 316,594 |
Currency effects | (646) |
Accumulated amortization. ending balance | 315,948 |
Goodwill | 4,466,634 | $ 4,070,267
Accumulated goodwill impairment, beginning balance | 135,420 |
Accumulated goodwill impairment, ending balance | 135,420 |
North American Records and Information Management Business |  |
Gross amount of goodwill [Roll Forward] |  |
Beginning balance | 2,474,829 |
Non-deductible goodwill acquired during the year | 0 |
Fair value and other adjustments | (376) |
Currency effects | (9,257) |
Ending balance | 2,465,196 |
Goodwill accumulated amortization [Roll Forward] |  |
Accumulated amortization. beginning balance | 205,383 |
Currency effects | (327) |
Accumulated amortization. ending balance | 205,056 |
Goodwill | 2,260,140 | 2,269,446
Accumulated goodwill impairment, beginning balance | 85,909 |
Accumulated goodwill impairment, ending balance | 85,909 |
North American Data Management Business |  |
Gross amount of goodwill [Roll Forward] |  |
Beginning balance | 551,726 |
Non-deductible goodwill acquired during the year | 0 |
Fair value and other adjustments | 0 |
Currency effects | (2,527) |
Ending balance | 549,199 |
Goodwill accumulated amortization [Roll Forward] |  |
Accumulated amortization. beginning balance | 53,875 |
Currency effects | (82) |
Accumulated amortization. ending balance | 53,793 |
Goodwill | 495,406 | 497,851
Accumulated goodwill impairment, beginning balance | 0 |
Accumulated goodwill impairment, ending balance | 0 |
Western European Business |  |
Gross amount of goodwill [Roll Forward] |  |
Beginning balance | 453,537 |
Non-deductible goodwill acquired during the year | 0 |
Fair value and other adjustments | 0 |
Currency effects | (9,353) |
Ending balance | 444,184 |
Goodwill accumulated amortization [Roll Forward] |  |
Accumulated amortization. beginning balance | 57,048 |
Currency effects | (237) |
Accumulated amortization. ending balance | 56,811 |
Goodwill | 387,373 | 396,489
Accumulated goodwill impairment, beginning balance | 46,500 |
Accumulated goodwill impairment, ending balance | 46,500 |
Other International Business |  |
Gross amount of goodwill [Roll Forward] |  |
Beginning balance | 846,721 |
Non-deductible goodwill acquired during the year | 5,330 |
Fair value and other adjustments | 7,797 |
Currency effects | (43,373) |
Ending balance | 816,475 |
Goodwill accumulated amortization [Roll Forward] |  |
Accumulated amortization. beginning balance | 288 |
Currency effects | 0 |
Accumulated amortization. ending balance | 288 |
Goodwill | 816,187 | 846,433
Accumulated goodwill impairment, beginning balance | 0 |
Accumulated goodwill impairment, ending balance | 0 |
Global Data Center Business |  |
Gross amount of goodwill [Roll Forward] |  |
Beginning balance | 0 |
Non-deductible goodwill acquired during the year | 443,368 |
Fair value and other adjustments | 0 |
Currency effects | (2) |
Ending balance | 443,366 |
Goodwill accumulated amortization [Roll Forward] |  |
Accumulated amortization. beginning balance | 0 |
Currency effects | 0 |
Accumulated amortization. ending balance | 0 |
Goodwill | 443,366 | 0
Accumulated goodwill impairment, beginning balance | 0 |
Accumulated goodwill impairment, ending balance | 0 |
Corporate and Other |  |
Gross amount of goodwill [Roll Forward] |  |
Beginning balance | 60,048 |
Non-deductible goodwill acquired during the year | 0 |
Fair value and other adjustments | 4,704 |
Currency effects | (590) |
Ending balance | 64,162 |
Goodwill accumulated amortization [Roll Forward] |  |
Accumulated amortization. beginning balance | 0 |
Currency effects | 0 |
Accumulated amortization. ending balance | 0 |
Goodwill | 64,162 | $ 60,048
Accumulated goodwill impairment, beginning balance | 3,011 |
Accumulated goodwill impairment, ending balance | $ 3,011 |

X
- Definition The accumulated amount of amortization of goodwill. + References No definition available. + Details
Name: | irm_GoodwillAccumulatedAmortization
Namespace Prefix: | irm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | irm_GoodwillAccumulatedAmortizationRollForward
Namespace Prefix: | irm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The increase (decrease) in the accumulated amortization related to goodwill, for foreign currency translation adjustments and purchase accounting adjustments. + References No definition available. + Details
Name: | irm_GoodwillAccumulatedAmortizationTranslationAndPurchaseAccountingAdjustments
Namespace Prefix: | irm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillAcquiredDuringPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillForeignCurrencyTranslationGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e961-128460 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillPurchaseAccountingAdjustments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_GoodwillRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=irm_NorthAmericanRecordsAndInformationManagementBusinessMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=irm_NorthAmericanDataManagementBusinessMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=irm_WesternEuropeanBusinessMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=irm_OtherInternationalBusinessMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=irm_GlobalDataCenterBusinessMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=us-gaap_CorporateAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |