Nature of Operations and Summary of Significant Accounting Policies (Revenue by Revenue Source) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue from External Customer [Line Items]
Revenues	$ 90,272	$ 74,989	$ 66,001
Google
Revenue from External Customer [Line Items]
Advertising revenues	79,383	67,390	59,624
Other revenues	10,080	7,154	6,050
Revenues	89,463	74,544	65,674
Google \| Google properties
Revenue from External Customer [Line Items]
Advertising revenues	63,785	52,357	45,085
Google \| Google Network Members' properties
Revenue from External Customer [Line Items]
Advertising revenues	15,598	15,033	14,539
Other Bets
Revenue from External Customer [Line Items]
Revenues	$ 809	$ 445	$ 327

Revenue from the sale of advertising time (such as television and radio) or space (newspaper or magazine pages). May also include advertising, marketing and promotional services rendered during the reporting period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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Revenues from the sale of other goods or rendering of other services, not elsewhere specified in the taxonomy; net of (reduced by) sales adjustments, returns, allowances, and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(a),(d))
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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