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Intangible Assets - Indefinite Life Intangible Assets (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Indefinite life intangible assets:
Impairment of intangible assets, indefinite-lived (excluding goodwill)		$ 0	$ 0
Pandora | Trademarks
Indefinite life intangible assets:
Impairment of intangible assets, indefinite-lived (excluding goodwill)	$ 20,000,000
Maximum
Indefinite life intangible assets:
Impairment of intangible assets, indefinite-lived (excluding goodwill)	$ 1,000,000

X

- Definition

Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

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- Definition

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+ References

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