CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash Flows from Operating Activities:
Net income (loss)	$ 58,507	$ 63,041
Loss (Income) from discontinued operations	337	0
Adjustments to reconcile net income (loss) to cash flows from operating activities:
Depreciation	99,592	75,390
Amortization (includes amortization of deferred financing costs and discount of $2,749 and $3,907 for the three months ended March 31, 2016 and 2017, respectively)	29,022	14,563
Revenue reduction associated with amortization of permanent withdrawal fees	3,158	2,943
Stock-based compensation expense	6,549	6,885
(Benefit) Provision for deferred income taxes	(7,386)	(6,012)
(Gain) Loss on disposal/write-down of property, plant and equipment, net (including real estate)	(459)	(451)
Foreign currency transactions and other, net	(786)	(11,477)
Changes in Assets and Liabilities (exclusive of acquisitions):
Accounts receivable	(8,971)	(8,151)
Prepaid expenses and other	(24,826)	30,297
Accounts payable	5,869	(30,934)
Accrued expenses and deferred revenue	(36,112)	(55,494)
Other assets and long-term liabilities	(2,320)	518
Cash Flows from Operating Activities - Continuing Operations	122,174	81,118
Cash Flows from Operating Activities - Discontinued Operations	(337)	0
Cash Flows from Operating Activities	121,837	81,118
Cash Flows from Investing Activities:
Capital expenditures	(73,202)	(80,852)
Cash paid for acquisitions, net of cash acquired	(12,187)	(19,340)
Acquisition of customer relationships	(17,132)	(6,132)
Customer inducements	(4,271)	(1,126)
Net proceeds from Iron Mountain Divestments (see Note 10)	2,423	0
Proceeds from sales of property and equipment and other, net (including real estate)	66	169
Cash Flows from Investing Activities—Continuing Operations	(104,303)	(107,281)
Cash Flows from Investing Activities—Discontinued Operations	0	0
Cash Flows from Investing Activities	(104,303)	(107,281)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	(2,682,348)	(2,384,215)
Proceeds from revolving credit and term loan facilities and other debt	2,714,783	2,509,845
Debt financing and equity contribution from noncontrolling interests	13,230	1,299
Debt repayment and equity distribution to noncontrolling interests	(2,562)	(414)
Parent cash dividends	(2,060)	(104,931)
Net (payments) proceeds associated with employee stock-based awards	(4,308)	(1,975)
Excess tax (deficiency) benefits from stock-based compensation	0	(348)
Payment of debt financing and stock issuance costs	(73)	0
Net Cash Provided by (Used in) Financing Activities	36,662	19,261
Cash Flows from Financing Activities—Discontinued Operations	0	0
Effect of Exchange Rates on Cash and Cash Equivalents	4,948	(3,534)
Increase (Decrease) in cash and cash equivalents	59,144	(10,436)
Cash and cash equivalents, beginning of period	236,484	128,381
Cash and cash equivalents, end of period	295,628	117,945
Supplemental Information:
Cash Paid for Interest	99,022	83,942
(Refund Received) Cash Paid for Income Taxes, Net	30,422	(3,211)
Non-Cash Investing and Financing Activities:
Capital Leases	24,395	18,005
Accrued Capital Expenditures	63,655	42,205
Dividends Payable	$ 148,992	$ 3,736