Acquisitions (Details) (USD $) In Millions, unless otherwise specified			12 Months Ended		12 Months Ended		12 Months Ended						12 Months Ended							12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Instagram Inc.	Dec. 31, 2012 Series of Individually Immaterial Business Acquisitions	Dec. 31, 2012 Acquired technology Instagram Inc.	Dec. 31, 2012 Acquired technology Series of Individually Immaterial Business Acquisitions	Dec. 31, 2012 Acquired technology Min	Dec. 31, 2012 Acquired technology Min Series of Individually Immaterial Business Acquisitions	Dec. 31, 2012 Acquired technology Max	Dec. 31, 2012 Acquired technology Max Series of Individually Immaterial Business Acquisitions	Dec. 31, 2012 Tradename and other Instagram Inc.	Dec. 31, 2012 Tradename and other Series of Individually Immaterial Business Acquisitions	Dec. 31, 2012 Tradename and other Min	Dec. 31, 2012 Tradename and other Min Instagram Inc.	Dec. 31, 2012 Tradename and other Min Series of Individually Immaterial Business Acquisitions	Dec. 31, 2012 Tradename and other Max	Dec. 31, 2012 Tradename and other Max Instagram Inc.	Dec. 31, 2012 Tradename and other Max Series of Individually Immaterial Business Acquisitions	Dec. 31, 2012 Patents	Dec. 31, 2012 Patents Microsoft Corporation	Dec. 31, 2012 Patents Min	Dec. 31, 2012 Patents Max	Dec. 31, 2012 Patents Current period acquisition Min	Dec. 31, 2012 Patents Current period acquisition Max	Dec. 31, 2012 Patents U.S. Microsoft Corporation Patent	Dec. 31, 2012 Patents Foreign Microsoft Corporation Patent	Dec. 31, 2012 Vested Shares Common Class B Instagram Inc.	Dec. 31, 2012 Unvested Shares Common Class B Instagram Inc.
Business Acquisition
Purchase price of acquisition			$ 521	$ 87
Number of shares issued																											12
Cash paid for business acquisition			300
Stock issued, unvested shares																												11
Aggregate fair value of stock issued			194
Stock issued, share based compensation expense vesting period			3 years
Allocation of estimated fair value of assets acquired and liabilities assumed
Amortizable intangible assets					74	20					64	8
Net liabilities assumed			(1)	(4)
Deferred tax liabilities			(49)	(9)
Net assets acquired			88	15
Goodwill			433	72
Total fair value considerations			521	87
Amount of acquired finite-lived intangible assets																			633
Number of patents acquired																									615	170
Payments to acquire intangible assets																				550
Purchased intangible assets	$ 92	$ 10																		$ 49
Useful lives from date of acquisitions					5 years		2 years	3 years	10 years	5 years			2 years	2 years	2 years	7 years	7 years	3 years			3 years	18 years	3 years	17 years