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Geographic Areas
12 Months Ended
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