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Segment Information - Revenues by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		9 Months Ended
	Sep. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting Information [Line Items]
Revenues	$ 1,481,557	$ 689,246	$ 1,437,451	$ 844,706	$ 1,549,309	$ 1,553,078	$ 3,030,866	$ 2,990,529
Operating Segments
Segment Reporting Information [Line Items]
Revenues	1,656,910		1,606,636				3,399,302	3,360,767
Operating Segments | North America
Segment Reporting Information [Line Items]
Revenues	935,205		950,169				1,831,912	1,853,490
Operating Segments | International
Segment Reporting Information [Line Items]
Revenues	721,705		656,467				1,567,390	1,507,277
Operating Segments | International | EMEA
Segment Reporting Information [Line Items]
Revenues	408,660		370,084				859,116	819,153
Operating Segments | International | Latin America
Segment Reporting Information [Line Items]
Revenues	213,535		198,760				430,095	411,778
Operating Segments | International | Asia Pacific
Segment Reporting Information [Line Items]
Revenues	99,510		87,623				278,179	276,346
Sales adjustments
Segment Reporting Information [Line Items]
Revenues	$ (175,353)		$ (169,185)				$ (368,436)	$ (370,238)

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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