Summary of Significant Accounting Policies - Schedule of Carrying Value of Goodwill, by Reporting Unit (Details) - USD ($) $ in Thousands	Oct. 01, 2015	Sep. 30, 2016	Dec. 31, 2015
Goodwill
Goodwill, Impairment Loss	$ 0
Goodwill		$ 3,861,810	$ 2,360,978
North American Records and Information Management business
Goodwill
Goodwill		2,207,055	1,415,744
North American Records and Information Management business | North American Records And Information Management
Goodwill
Goodwill		2,058,150	1,342,723
North American Records and Information Management business | North American Secure Shredding
Goodwill
Goodwill		148,905	73,021
North American Data Management Business
Goodwill
Goodwill		499,644	369,907
Corporate and Other
Goodwill
Goodwill		27,547	26,186
Corporate and Other | Adjacent Businesses - Data Centers
Goodwill
Goodwill		0	0
Corporate and Other | Adjacent Businesses - Consumer Storage [Member]
Goodwill
Goodwill		4,636	4,636
Corporate and Other | Adjacent Businesses - Fine Arts [Member]
Goodwill
Goodwill		22,911	21,550
Western European Business
Goodwill
Goodwill		454,531	323,644
Western European Business | United Kingdom, Ireland, Norway [Member]
Goodwill
Goodwill			260,202
Western European Business | UKI
Goodwill
Goodwill		454,531
Western European Business | Continental Western Europe
Goodwill
Goodwill		142,285	63,442
Other International Business | Latin America
Goodwill
Goodwill		180,664	78,537
Other International Business | Australia and New Zealand
Goodwill
Goodwill		152,387
Other International Business | Southeast Asia
Goodwill
Goodwill		177,512
Other International Business | Emerging Markets - Europe [Member]
Goodwill
Goodwill			87,378
Other International Business | Australia Singapore [Member]
Goodwill
Goodwill			47,786
Other International Business | Greater China [Member]
Goodwill
Goodwill			5,683
Other International Business | INDIA
Goodwill
Goodwill			$ 6,113
Other International Business | Africa, India [Member]
Goodwill
Goodwill		$ 20,185