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Summary of Significant Accounting Policies Summary of Significant Accounting Policies - Change in Presentation (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Cost of sales (excluding depreciation and amortization) | $ 406,693 | $ 463,809 | $ 873,614 | $ 924,455
Selling, general and administrative | $ 241,947 | 252,156 | $ 480,680 | 520,867
Significant Acquisition Costs |  | 1,901 |  | 4,647
Global RIM Business |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Significant Acquisition Costs |  | 1,032 |  | 1,912
Global Data Center Business |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Significant Acquisition Costs |  | 124 |  | 267
Corporate and Other Business |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Significant Acquisition Costs |  | 745 |  | 2,468
Correction In Presentation | Adjustment |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Cost of sales (excluding depreciation and amortization) |  | (1,293) |  | (2,191)
Selling, general and administrative |  | (608) |  | (2,456)
Significant Acquisition Costs |  | $ 1,901 |  | $ 4,647

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