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Segment Information Revenues By Region (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Revenues from External Customers [Line Items] |  |  |
Revenue, Net |  | $ 607,221 | $ 477,592
United States and Canada [Member] |  |  |
Revenues from External Customers [Line Items] |  |  |
Revenue, Net |  | 355,932 | 269,096
Europe, Middle East, and Africa [Member] |  |  |
Revenues from External Customers [Line Items] |  |  |
Revenue, Net |  | 202,074 | 162,815
Other [Member] |  |  |
Revenues from External Customers [Line Items] |  |  |
Revenue, Net | [1] | $ 49,215 | $ 45,681
[1] | The Other region includes our operations in Latin America and Asia Pacific.

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