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Segment Information Revenues By Region (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Revenues from External Customers [Line Items] |  |  |  |  |
Revenue, Net |  | $ 503,082 | $ 513,024 | $ 980,674 | $ 1,010,614
United States and Canada [Member] |  |  |  |  |
Revenues from External Customers [Line Items] |  |  |  |  |
Revenue, Net |  | 295,737 | 278,315 | 564,834 | 540,352
Europe, Middle East, and Africa [Member] |  |  |  |  |
Revenues from External Customers [Line Items] |  |  |  |  |
Revenue, Net |  | 158,766 | 187,848 | 321,581 | 383,558
Other [Member] |  |  |  |  |
Revenues from External Customers [Line Items] |  |  |  |  |
Revenue, Net | [1] | $ 48,579 | $ 46,861 | $ 94,259 | $ 86,704
[1] | The Other region includes our operations in Latin America and Asia Pacific.

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