Goodwill and other intangible assets, net - Changes in carrying amount of goodwill, by reporting segment (Details) $ in Thousands	6 Months Ended
Jun. 30, 2019 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 2,246,579
Goodwill related to acquisitions	725
Currency translation adjustment	2,915
Goodwill, ending balance	2,250,219
Americas
Goodwill [Roll Forward]
Goodwill, beginning balance	1,549,534
Goodwill related to acquisitions	174
Currency translation adjustment	1,221
Goodwill, ending balance	1,550,929
EMEA
Goodwill [Roll Forward]
Goodwill, beginning balance	480,615
Goodwill related to acquisitions	75
Currency translation adjustment	196
Goodwill, ending balance	480,886
Asia
Goodwill [Roll Forward]
Goodwill, beginning balance	211,547
Goodwill related to acquisitions	476
Currency translation adjustment	1,498
Goodwill, ending balance	213,521
OEM
Goodwill [Roll Forward]
Goodwill, beginning balance	4,883
Goodwill related to acquisitions	0
Currency translation adjustment	0
Goodwill, ending balance	$ 4,883

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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