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Significant Acquisition Costs - Significant Acquisition Costs by Segment (Details) - Recall Transaction and IODC Transaction - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |
Total Significant Acquisition Costs | $ 1,901 | $ 10,421 | $ 4,647 | $ 29,429
North American Records and Information Management Business |  |  |  |
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |
Total Significant Acquisition Costs | 0 | 3,017 | 378 | 3,601
North American Data Management Business |  |  |  |
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |
Total Significant Acquisition Costs | 0 | 351 | 0 | 351
Western European Business |  |  |  |
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |
Total Significant Acquisition Costs | 81 | 1,427 | 81 | 3,579
Other International Business |  |  |  |
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |
Total Significant Acquisition Costs | 951 | 896 | 1,453 | 1,433
Global Data Center Business |  |  |  |
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |
Total Significant Acquisition Costs | 124 | 1,159 | 267 | 11,340
Corporate and Other Business |  |  |  |
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |
Total Significant Acquisition Costs | $ 745 | $ 3,571 | $ 2,468 | $ 9,125

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