Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Acquisitions (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Nov. 30, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Goodwill	$ 20,624	$ 20,624		$ 17,888	$ 16,747
Patents and developed technology
Business Acquisition [Line Items]
Acquired intangible assets, weighted-average useful life		3 years 6 months
Customer relationships
Business Acquisition [Line Items]
Acquired intangible assets, weighted-average useful life		6 years 3 months 18 days
Trade names and other
Business Acquisition [Line Items]
Acquired intangible assets, weighted-average useful life		4 years 6 months
Looker
Business Acquisition [Line Items]
Total acquisition price	2,400
Cash acquired	91	$ 91
Acquired intangible assets	290	290
Goodwill	1,900	1,900
Net assets acquired	48	48
Series of individually immaterial business acquisitions
Business Acquisition [Line Items]
Cash acquired	28	28
Acquired intangible assets	282	282
Goodwill	904	904
Total consideration		1,000
Liabilities assumed	$ 185	$ 185
Fitbit
Business Acquisition [Line Items]
Business acquisition (usd per share)			$ 7.35
Total valuation at date of agreement			$ 2,100