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Segment Information Revenues By Region (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Revenues from External Customers [Line Items] |  |  |  |  |
Revenue, Net |  | $ 486,747 | $ 506,859 | $ 1,467,421 | $ 1,517,473
United States and Canada [Member] |  |  |  |  |
Revenues from External Customers [Line Items] |  |  |  |  |
Revenue, Net |  | 259,796 | 297,116 | 824,630 | 837,468
Europe, Middle East, and Africa [Member] |  |  |  |  |
Revenues from External Customers [Line Items] |  |  |  |  |
Revenue, Net |  | 171,924 | 161,959 | 493,505 | 545,517
Other [Member] |  |  |  |  |
Revenues from External Customers [Line Items] |  |  |  |  |
Revenue, Net | [1] | $ 55,027 | $ 47,784 | $ 149,286 | $ 134,488
[1] | The Other region includes our operations in Latin America and Asia Pacific.

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