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Segment Information - Revenue and Asset Information by Geography and Service Line (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 1,061,489 | $ 1,060,991 | $ 1,060,823 | $ 1,042,458 | $ 991,235 | $ 965,661 | $ 949,806 | $ 938,876 | $ 4,225,761 | $ 3,845,578 | $ 3,511,453
Long-Lived Assets | 10,644,133 |  |  |  | 9,022,087 |  |  |  | 10,644,133 | 9,022,087 | 8,374,693
Records Management |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 2,967,922 | 2,847,691 | 2,631,895
Data Management |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 596,544 | 574,251 | 525,086
Information Destruction |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 432,312 | 385,942 | 330,223
Data Center |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 228,983 | 37,694 | 24,249
United States |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 2,579,847 | 2,310,296 | 2,173,782
Long-Lived Assets | 6,902,232 |  |  |  | 5,476,551 |  |  |  | 6,902,232 | 5,476,551 | 5,238,807
United Kingdom |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 280,993 | 246,373 | 237,032
Long-Lived Assets | 547,768 |  |  |  | 529,233 |  |  |  | 547,768 | 529,233 | 400,937
Canada |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 249,505 | 243,625 | 230,944
Long-Lived Assets | 453,398 |  |  |  | 500,396 |  |  |  | 453,398 | 500,396 | 463,396
Australia |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 155,367 | 157,333 | 148,175
Long-Lived Assets | 442,755 |  |  |  | 470,432 |  |  |  | 442,755 | 470,432 | 542,055
Other International |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 960,049 | 887,951 | 721,520
Long-Lived Assets | $ 2,297,980 |  |  |  | $ 2,045,475 |  |  |  | 2,297,980 | 2,045,475 | 1,729,498
North American Records and Information Management Business |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 2,137,781 | 2,050,346 | 1,930,699
North American Records and Information Management Business | Records Management |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 1,751,058 | 1,706,288 | 1,629,367
North American Records and Information Management Business | Data Management |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 0 | 0 | 0
North American Records and Information Management Business | Information Destruction |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 386,723 | 344,058 | 301,332
North American Records and Information Management Business | Data Center |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 0 | 0 | 0
North American Data Management Business |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 393,993 | 401,640 | 392,814
North American Data Management Business | Records Management |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 0 | 0 | 14,857
North American Data Management Business | Data Management |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 384,370 | 391,346 | 370,419
North American Data Management Business | Information Destruction |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 9,623 | 10,294 | 7,538
North American Data Management Business | Data Center |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 0 | 0 | 0
Western European Business |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 521,555 | 490,746 | 447,357
Western European Business | Records Management |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 443,960 | 417,221 | 373,994
Western European Business | Data Management |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 77,189 | 73,389 | 73,182
Western European Business | Information Destruction |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 406 | 136 | 181
Western European Business | Data Center |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other International Business |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 821,333 | 795,851 | 659,370
Other International Business | Records Management |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 708,297 | 686,988 | 578,209
Other International Business | Data Management |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 77,476 | 77,413 | 59,989
Other International Business | Information Destruction |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 35,560 | 31,450 | 21,172
Other International Business | Data Center |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 0 | 0 | 0
Global Data Center Business |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 228,983 | 37,694 | 24,249
Global Data Center Business | Records Management |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 0 | 0 | 0
Global Data Center Business | Data Management |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 0 | 0 | 0
Global Data Center Business | Information Destruction |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 0 | 0 | 0
Global Data Center Business | Data Center |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 228,983 | 37,694 | 24,249
Corporate and Other Business |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 122,116 | 69,301 | 56,964
Corporate and Other Business | Records Management |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 64,607 | 37,194 | 35,468
Corporate and Other Business | Data Management |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 57,509 | 32,103 | 21,496
Corporate and Other Business | Information Destruction |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 0 | 4 | 0
Corporate and Other Business | Data Center |  |  |  |  |  |  |  |  |  |  |
Revenues by product and service lines |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ 0

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