Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors - Balance Sheets (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Consolidating financial statements
Percentage of subsidiaries owned	100.00%
Current Assets:
Cash and Cash Equivalents	$ 117,098	$ 125,933	$ 145,343	$ 120,526
Restricted Cash	0	33,860
Accounts Receivable	596,252	604,265
Intercompany Receivable	0	0
Other Current Assets	161,377	153,661
Total Current Assets	874,727	917,719
Property, Plant and Equipment, Net	2,493,013	2,550,727
Other Assets, Net:
Long-term Notes Receivable from Affiliates and Intercompany Receivable	0	0
Investment in Subsidiaries	0	0
Goodwill	2,388,697	2,423,783
Other	666,140	678,113
Total Other Assets, net	3,054,837	3,101,896
Total Assets	6,422,577	6,570,342	6,735,124
Liabilities and Equity
Intercompany Payable	0	0
Current Portion of Long-term Debt	70,235	52,095
Total Other Current Liabilities	681,900	804,641
Long-term Debt, Net of Current Portion	4,718,915	4,611,436
Long-term Notes Payable to Affiliates and Intercompany Payable	0	0
Other Long-term Liabilities	$ 229,302	$ 232,215
Commitments and Contingencies (see Note 8)
Total Iron Mountain Incorporated Stockholders' Equity	$ 708,787	$ 856,355
Noncontrolling Interests	13,438	13,600
Total Equity	722,225	869,955	1,297,150	1,051,734
Total Liabilities and Equity	6,422,577	6,570,342
Eliminations
Current Assets:
Cash and Cash Equivalents	0	0	0	0
Restricted Cash		0
Accounts Receivable	0	0
Intercompany Receivable	(998,589)	(586,725)
Other Current Assets	(31)	(34)
Total Current Assets	(998,620)	(586,759)
Property, Plant and Equipment, Net	0	0
Other Assets, Net:
Long-term Notes Receivable from Affiliates and Intercompany Receivable	(3,007,764)	(2,854,344)
Investment in Subsidiaries	(1,617,517)	(1,698,153)
Goodwill	0	0
Other	0	0
Total Other Assets, net	(4,625,281)	(4,552,497)
Total Assets	(5,623,901)	(5,139,256)
Liabilities and Equity
Intercompany Payable	(998,589)	(586,725)
Current Portion of Long-term Debt	(31)	(34)
Total Other Current Liabilities	0	0
Long-term Debt, Net of Current Portion	0	0
Long-term Notes Payable to Affiliates and Intercompany Payable	(3,007,764)	(2,854,344)
Other Long-term Liabilities	0	0
Total Iron Mountain Incorporated Stockholders' Equity	(1,617,517)	(1,698,153)
Noncontrolling Interests	0	0
Total Equity	(1,617,517)	(1,698,153)
Total Liabilities and Equity	(5,623,901)	(5,139,256)
Parent | Reportable legal entities
Current Assets:
Cash and Cash Equivalents	1,473	2,399	0	1,243
Restricted Cash		33,860
Accounts Receivable	0	0
Intercompany Receivable	0	0
Other Current Assets	6,362	153
Total Current Assets	7,835	36,412
Property, Plant and Equipment, Net	751	840
Other Assets, Net:
Long-term Notes Receivable from Affiliates and Intercompany Receivable	3,005,347	2,851,651
Investment in Subsidiaries	875,518	917,170
Goodwill	0	0
Other	28,571	31,108
Total Other Assets, net	3,909,436	3,799,929
Total Assets	3,918,022	3,837,181
Liabilities and Equity
Intercompany Payable	762,351	505,083
Current Portion of Long-term Debt	0	0
Total Other Current Liabilities	55,595	60,097
Long-term Debt, Net of Current Portion	2,390,289	2,414,646
Long-term Notes Payable to Affiliates and Intercompany Payable	1,000	1,000
Other Long-term Liabilities	0	0
Total Iron Mountain Incorporated Stockholders' Equity	708,787	856,355
Noncontrolling Interests	0	0
Total Equity	708,787	856,355
Total Liabilities and Equity	3,918,022	3,837,181
Guarantors | Reportable legal entities
Current Assets:
Cash and Cash Equivalents	3,455	4,713	7,948	10,366
Restricted Cash		0
Accounts Receivable	19,114	361,330
Intercompany Receivable	998,589	586,725
Other Current Assets	87,872	88,709
Total Current Assets	1,109,030	1,041,477
Property, Plant and Equipment, Net	1,565,978	1,580,337
Other Assets, Net:
Long-term Notes Receivable from Affiliates and Intercompany Receivable	1,000	245
Investment in Subsidiaries	615,258	656,877
Goodwill	1,615,448	1,611,957
Other	383,904	375,082
Total Other Assets, net	2,615,610	2,644,161
Total Assets	5,290,618	5,265,975
Liabilities and Equity
Intercompany Payable	0	0
Current Portion of Long-term Debt	36,113	24,955
Total Other Current Liabilities	397,531	470,122
Long-term Debt, Net of Current Portion	884,663	908,431
Long-term Notes Payable to Affiliates and Intercompany Payable	3,006,764	2,851,384
Other Long-term Liabilities	111,872	115,789
Total Iron Mountain Incorporated Stockholders' Equity	853,675	895,294
Noncontrolling Interests	0	0
Total Equity	853,675	895,294
Total Liabilities and Equity	5,290,618	5,265,975
Canada Company | Reportable legal entities
Current Assets:
Cash and Cash Equivalents	6,877	4,979	5,578	1,094
Restricted Cash		0
Accounts Receivable	37,858	37,137
Intercompany Receivable	0	0
Other Current Assets	3,621	2,925
Total Current Assets	48,356	45,041
Property, Plant and Equipment, Net	151,969	160,977
Other Assets, Net:
Long-term Notes Receivable from Affiliates and Intercompany Receivable	1,417	2,448
Investment in Subsidiaries	29,929	30,751
Goodwill	171,194	180,342
Other	27,588	26,672
Total Other Assets, net	230,128	240,213
Total Assets	430,453	446,231
Liabilities and Equity
Intercompany Payable	4,201	3,564
Current Portion of Long-term Debt	0	0
Total Other Current Liabilities	27,557	35,142
Long-term Debt, Net of Current Portion	232,476	245,861
Long-term Notes Payable to Affiliates and Intercompany Payable	0	0
Other Long-term Liabilities	39,478	37,558
Total Iron Mountain Incorporated Stockholders' Equity	126,741	124,106
Noncontrolling Interests	0	0
Total Equity	126,741	124,106
Total Liabilities and Equity	430,453	446,231
Non-Guarantors | Reportable legal entities
Current Assets:
Cash and Cash Equivalents	105,293	113,842	$ 131,817	$ 107,823
Restricted Cash		0
Accounts Receivable	539,280	205,798
Intercompany Receivable	0	0
Other Current Assets	63,553	61,908
Total Current Assets	708,126	381,548
Property, Plant and Equipment, Net	774,315	808,573
Other Assets, Net:
Long-term Notes Receivable from Affiliates and Intercompany Receivable	0	0
Investment in Subsidiaries	96,812	93,355
Goodwill	602,055	631,484
Other	226,077	245,251
Total Other Assets, net	924,944	970,090
Total Assets	2,407,385	2,160,211
Liabilities and Equity
Intercompany Payable	232,037	78,078
Current Portion of Long-term Debt	34,153	27,174
Total Other Current Liabilities	201,217	239,280
Long-term Debt, Net of Current Portion	1,211,487	1,042,498
Long-term Notes Payable to Affiliates and Intercompany Payable	0	1,960
Other Long-term Liabilities	77,952	78,868
Total Iron Mountain Incorporated Stockholders' Equity	637,101	678,753
Noncontrolling Interests	13,438	13,600
Total Equity	650,539	692,353
Total Liabilities and Equity	$ 2,407,385	$ 2,160,211