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Geographic Areas (Tables) | 12 Months Ended
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Dec. 31, 2018
Segment Reporting [Abstract] |
Long-lived Assets by Geographic Areas | 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 by Geographic Areas | 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 Tabular disclosure of long-lived assets, excluding financial instruments, long-term customer relationships of a financial institution, mortgage rights, deferred policy acquisition costs, and deferred tax assets, by geographic areas located in the entity's country of domicile and foreign countries in which the entity holds assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph b -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e9038-108599 + Details
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- Definition Tabular disclosure of revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph a -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e9038-108599 + Details
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