Acquisitions (Details) - USD ($) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019	Nov. 30, 2019
Business Acquisition [Line Items]
Goodwill	$ 20,870	$ 20,624
Patents and developed technology
Business Acquisition [Line Items]
Acquired intangible assets, weighted-average useful life	3 years 9 months 18 days
Trade names and other
Business Acquisition [Line Items]
Acquired intangible assets, weighted-average useful life	5 years
Customer relationships
Business Acquisition [Line Items]
Acquired intangible assets, weighted-average useful life	4 years 9 months 18 days
Other acquisitions
Business Acquisition [Line Items]
Total consideration	$ 387
Acquired intangible assets	139
Goodwill	204
Net assets acquired	$ 44
Fitbit
Business Acquisition [Line Items]
Share price (in dollars per share)			$ 7.35
Purchase price			$ 2,100