Segment Information - Revenues by Product and Service Lines by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment information
Total Revenues	$ 4,147,270	$ 4,262,584	$ 4,225,761
GLOBAL RIM BUSINESS
Segment information
Total Revenues	3,699,280	3,812,433	3,842,600
GLOBAL DATA CENTER BUSINESS
Segment information
Total Revenues	279,312	257,151	228,983
CORPORATE  AND OTHER BUSINESS
Segment information
Total Revenues	168,678	193,000	154,178
Records management
Segment information
Total Revenues	2,954,299	2,995,146	2,967,922
Records management | GLOBAL RIM BUSINESS
Segment information
Total Revenues	2,852,296	2,866,192	2,871,253
Records management | GLOBAL DATA CENTER BUSINESS
Segment information
Total Revenues	0	0	0
Records management | CORPORATE  AND OTHER BUSINESS
Segment information
Total Revenues	102,003	128,954	96,669
Data management
Segment information
Total Revenues	554,873	584,128	596,544
Data management | GLOBAL RIM BUSINESS
Segment information
Total Revenues	488,198	520,082	539,035
Data management | GLOBAL DATA CENTER BUSINESS
Segment information
Total Revenues	0	0	0
Data management | CORPORATE  AND OTHER BUSINESS
Segment information
Total Revenues	66,675	64,046	57,509
Information destruction
Segment information
Total Revenues	358,786	426,159	432,312
Information destruction | GLOBAL RIM BUSINESS
Segment information
Total Revenues	358,786	426,159	432,312
Information destruction | GLOBAL DATA CENTER BUSINESS
Segment information
Total Revenues	0	0	0
Information destruction | CORPORATE  AND OTHER BUSINESS
Segment information
Total Revenues	0	0	0
Data Center
Segment information
Total Revenues	279,312	257,151	228,983
Data Center | GLOBAL RIM BUSINESS
Segment information
Total Revenues	0	0	0
Data Center | GLOBAL DATA CENTER BUSINESS
Segment information
Total Revenues	279,312	257,151	228,983
Data Center | CORPORATE  AND OTHER BUSINESS
Segment information
Total Revenues	$ 0	$ 0	$ 0