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- Definition

Business Combination, Consideration Transferred, Contingent Consideration Accrual

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- Definition

Business Combination Separately Recognized Transactions Expenses And Losses Recognized, Acquisition Costs Incurred to Date

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- Definition

Disposal Group, Including Discontinued Operation, Contingent Receivable

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Noncash or Part Noncash Divestiture, Amount of Consideration Received, Note Receivable, Stated Interest Rate

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- Definition

Number Of Data Centers

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Scheme of Arrangement, Number of Cities Subject to Divestment

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- Definition

Number of shares of equity interests issued or issuable to acquire entity.

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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.

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Per basic share amount of pro forma income from continuing operations, after tax, as if the business combination had been completed at the beginning of a period.

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Per diluted share amount of pro forma income from continuing operations, after tax, as if the business combination had been completed at the beginning of a period.

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- Definition

Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

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Amount after tax of pro forma income from continuing operations as if the business combination had been completed at the beginning of a period.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of liability recognized arising from contingent consideration in a business combination.

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Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

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Amount of operating income (loss) attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of revenue attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

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Amount of noncash consideration received for selling an asset or business through a noncash (or part noncash) transaction.

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- Definition

The number of businesses acquired by the entity during the period.

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No definition available.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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Amount before tax of reclassification adjustments of other comprehensive income (loss) attributable to parent.

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Acquisitions (Details) $ / shares in Units, € in Thousands, £ in Thousands, $ in Thousands, $ in Thousands, $ in Thousands											1 Months Ended												6 Months Ended		12 Months Ended			48 Months Ended
	May 25, 2018 USD ($)	May 25, 2018 EUR (€)	Mar. 08, 2018 USD ($) data_center	Mar. 08, 2018 GBP (£) data_center	Mar. 08, 2018 SGD ($) data_center	Jan. 10, 2018 USD ($) data_center	Dec. 29, 2016 USD ($)	Oct. 31, 2016 AUD ($)	May 04, 2016 USD ($)	May 02, 2016 USD ($) shares	Aug. 31, 2018 USD ($)	Nov. 30, 2017 USD ($)	Oct. 31, 2017 USD ($)	Sep. 30, 2017 USD ($) $ / shares shares	Sep. 30, 2017 GBP (£) shares	Jul. 31, 2017 USD ($)	Jul. 31, 2017 EUR (€)	Jun. 30, 2017 USD ($) company	Dec. 31, 2016 USD ($) city	Dec. 31, 2016 EUR (€) city	Nov. 30, 2016 region	Mar. 31, 2016 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2017 EUR (€)	Dec. 31, 2018 USD ($) company $ / shares	Dec. 31, 2017 USD ($) company acquisition $ / shares shares	Dec. 31, 2016 USD ($) city $ / shares shares	Dec. 31, 2018 USD ($)	Dec. 09, 2016 USD ($)	Dec. 09, 2016 GBP (£)	Oct. 31, 2016 USD ($)	Oct. 31, 2016 AUD ($)	Apr. 29, 2016 $ / shares
Business Acquisition [Line Items]
Net proceeds from divestments (see Note 13)																									$ 1,019	$ 29,236	$ 30,654
Loss on disposition																									0	0	16,838
Total Revenues																									4,229,251	3,983,016	3,763,929
Income (Loss) from Continuing Operations																									$ 386,928	$ 124,385	$ 138,954
Per Share Income (Loss) from Continuing Operations - Basic (in dollars per share) \| $ / shares																									$ 1.35	$ 0.43	$ 0.53
Per Share Income (Loss) from Continuing Operations - Diluted (in dollars per share) \| $ / shares																									$ 1.35	$ 0.43	$ 0.53
Recall Holdings Limited
Business Acquisition [Line Items]
Cash consideration										$ 331,800																	$ 331,834
Share price (in dollars per share) \| $ / shares																																	$ 36.53
Purchase price										$ 2,166,900																	$ 2,166,860
Operating expenditures																												$ 140,661
Recall Holdings Limited \| Common Stock
Business Acquisition [Line Items]
Issuance of common stock (in shares) \| shares										50,233,412																	50,233,412
IO Data Center LLC
Business Acquisition [Line Items]
Cash consideration																									$ 1,347,046
Purchase price						$ 1,347,000																			1,347,046
Number of data centers \| data_center						4
Potential additional payments to be made						$ 35,000
Contingent consideration accrual																									31,000			$ 31,000
Operating expenditures																									$ 28,064
Docufile
Business Acquisition [Line Items]
Purchase price																						$ 15,000
Santa Fe Transaction 2016
Business Acquisition [Line Items]
Cash consideration																			$ 14,200	€ 13,500
Purchase price																			$ 16,000	€ 15,200
Number of regions \| region																					10
Santa Fe Transaction 2017
Business Acquisition [Line Items]
Purchase price																							$ 13,000	€ 11,700
Santa Fe China Transaction
Business Acquisition [Line Items]
Purchase price												$ 16,800
Ransa and Depositos Transaction
Business Acquisition [Line Items]
Purchase price																		$ 14,700
Number of companies acquired \| company																		2
Fileminders Ltd
Business Acquisition [Line Items]
Purchase price																$ 28,500	€ 24,900
FORTRUST
Business Acquisition [Line Items]
Cash consideration														$ 54,500
Share price (in dollars per share) \| $ / shares														$ 37.84
Purchase price														$ 137,500
FORTRUST \| Common Stock
Business Acquisition [Line Items]
Issuance of common stock (in shares) \| shares														2,193,637	2,193,637											2,193,637
Bonded Transaction
Business Acquisition [Line Items]
Purchase price														$ 83,000	£ 62,000
OEC Records Management
Business Acquisition [Line Items]
Purchase price													$ 19,300
Storage and Data Management Company
Business Acquisition [Line Items]
Number of companies acquired \| company																									10	1
Art Storage Company
Business Acquisition [Line Items]
Number of companies acquired \| company																									3	1
Storage and Records Management Company
Business Acquisition [Line Items]
Number of companies acquired \| acquisition																										5
Other 2017 Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Purchase price																										$ 22,700
Other 2017 Individually Immaterial Business Acquisitions \| Maximum
Business Acquisition [Line Items]
Purchase price																										$ 5,000
Credit Suisse Data Center Acquisition
Business Acquisition [Line Items]
Purchase price			$ 111,400	£ 34,600	$ 81,000
Number of data centers \| data_center			2	2	2
EvoSwitch
Business Acquisition [Line Items]
Cash consideration	$ 222,000	€ 189,000
Potential additional payments to be made	$ 25,000
GRM Document Management
Business Acquisition [Line Items]
Purchase price											$ 34,100
Other 2018 Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Purchase price																									$ 64,000
Other 2018 Individually Immaterial Business Acquisitions \| Maximum
Business Acquisition [Line Items]
Purchase price																									18,000
Other 2018 Individually Immaterial Business Acquisitions \| Minimum
Business Acquisition [Line Items]
Purchase price																									$ 1,000
Initial United States Divestments
Business Acquisition [Line Items]
Number of cities subject to divestment \| city																			13	13							13
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Australia Divestment Business
Business Acquisition [Line Items]
Divestiture cash consideration received																															$ 53,200	$ 70,000
Net proceeds from divestments (see Note 13)								$ 35,000
Amount of consideration received								$ 35,000
Interest rate																															3.30%	3.30%
Loss on disposition																											$ 15,417
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Australia Divestment Business \| Accumulated Foreign Currency Adjustment Attributable to Parent
Business Acquisition [Line Items]
Cumulative translation adjustment reclassified from accumulated other comprehensive items, net																											7,099
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Iron Mountain Canadian Divestments
Business Acquisition [Line Items]
Loss on disposition																											1,421
Discontinued Operations, Disposed of by Sale \| Initial United States Divestments
Business Acquisition [Line Items]
Divestiture cash consideration received									$ 80,000
Net proceeds from divestments (see Note 13)									55,000
Contingent consideration									$ 25,000
Discontinued Operations, Disposed of by Sale \| ARKIVE, Inc. Sale
Business Acquisition [Line Items]
Divestiture cash consideration received							$ 50,000
Net proceeds from divestments (see Note 13)							$ 45,000
Discontinued Operations, Disposed of by Sale \| UK Divestments
Business Acquisition [Line Items]
Divestiture cash consideration received																													$ 2,200	£ 1,800
Disposal Group, Held-for-sale, Not Discontinued Operations \| Australia Divestment Business And Iron Mountain Canadian Divestments
Business Acquisition [Line Items]
Total revenues																											46,655
Total income from continuing operations																											$ 2,603