Intangible Assets (Schedule of Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Finite-life intangible assets, gross carrying value	$ 156,629
Finite-life intangible assets, accumulated amortization	6,251
Finite-life intangible assets, net carrying value	150,378
Indefinite-life intangible assets	351,725
Gross Carrying Value	508,354
Net Carrying Value	502,103
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Finite-life intangible assets, gross carrying value	97,400
Finite-life intangible assets, accumulated amortization	1,082
Finite-life intangible assets, net carrying value	$ 96,318
Customer relationships \| Weighted Average
Finite-Lived Intangible Assets [Line Items]
Remaining Weighted Average Amortization Period (Years)	14 years 9 months 18 days
Galapagos operating licenses
Finite-Lived Intangible Assets [Line Items]
Finite-life intangible assets, gross carrying value	$ 47,669	$ 11,600
Finite-life intangible assets, accumulated amortization	4,206	$ 3,700
Finite-life intangible assets, net carrying value	$ 43,463
Galapagos operating licenses \| Weighted Average
Finite-Lived Intangible Assets [Line Items]
Remaining Weighted Average Amortization Period (Years)	25 years 9 months 7 days
Other finite-life intangible assets
Finite-Lived Intangible Assets [Line Items]
Finite-life intangible assets, gross carrying value	$ 11,560
Finite-life intangible assets, accumulated amortization	963
Finite-life intangible assets, net carrying value	$ 10,597
Other finite-life intangible assets \| Weighted Average
Finite-Lived Intangible Assets [Line Items]
Remaining Weighted Average Amortization Period (Years)	1 year 9 months 18 days

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
-Paragraph 1
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-Section 50
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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+ References

No definition available.

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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Amount before accumulated amortization of intangible assets, excluding goodwill.

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
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