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Geographic Areas | 12 Months Ended
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Dec. 31, 2018
Segment Reporting [Abstract] |
Geographic Areas | Geographic Areas Long-lived assets The following table sets forth long-lived assets by geographic area:
|  | As of December 31,
|  | 2018 |  | 2017
United States |  | $ | 293.6 |  |  | $ | 323.7 |
International(1) |  | 17.0 |  |  | 18.2 |
Total property and equipment, net |  | $ | 310.6 |  |  | $ | 341.9 |
(1) | No single country other than the United States had a property and equipment balance greater than 10% of total property and equipment, net, as of December 31, 2018 and 2017.
Revenue Revenue by geography is generally based on the address of the customer as defined in the Company’s subscription agreement. The following table sets forth revenue by geographic area for the years ended December 31, 2018, 2017, and 2016:
| Year ended December 31,
| 2018 |  | 2017 |  | 2016
United States | $ | 706.5 |  |  | $ | 575.7 |  |  | $ | 455.9 |
International(1) | 685.2 |  |  | 531.1 |  |  | 388.9 |
Total revenue | $ | 1,391.7 |  |  | $ | 1,106.8 |  |  | $ | 844.8 |
(1) | No single country outside of the United States accounted for more than 10 percent of total revenue during the years ended December 31, 2018, 2017, and 2016

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
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