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Significant Acquisition Costs Significant Acquisition Costs by Segment (Details) - Recall Transaction and IODC Transaction [Member] - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |
Total Significant Acquisition Costs | $ 10,421 | $ 19,977 | $ 29,429 | $ 40,548
North American Records and Information Management business |  |  |  |
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |
Total Significant Acquisition Costs | 3,017 | 6,326 | 3,601 | 13,625
North American Data Management Business |  |  |  |
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |
Total Significant Acquisition Costs | 351 | 938 | 351 | 1,683
Western European Business |  |  |  |
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |
Total Significant Acquisition Costs | 1,427 | 2,131 | 3,579 | 5,347
Other International Business |  |  |  |
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |
Total Significant Acquisition Costs | 896 | 1,937 | 1,433 | 3,588
Global Data Center Business |  |  |  |
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |
Total Significant Acquisition Costs | 1,159 | 0 | 11,340 | 0
Corporate and Other |  |  |  |
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |
Total Significant Acquisition Costs | $ 3,571 | $ 8,645 | $ 9,125 | $ 16,305

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