Acquisitions Goodwill and Acquired Intangible Assets - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended			1 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	May 31, 2012
Business Acquisition [Line Items]
Acquired goodwill	$ 3,319	$ 2,655	$ 2,552
Net sales of acquired companies included in our consolidated financial statements since acquisition dates	40
Operating loss of acquired companies included in our consolidated financial statements since acquisition dates	30
Amortization expense for acquired intangibles	181	168	163
Twitch Interactive, Inc.
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition	Sep. 25, 2014
Aggregate purchase price	842
2014 Acquisitions
Business Acquisition [Line Items]
Aggregate purchase price	862
Fair value of stock options that will be expensed over the remaining service period	39
Acquired goodwill	707
Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Aggregate purchase price	20	195
Acquired goodwill		103
Acquired intangible assets		83
Kiva Systems, Inc
Business Acquisition [Line Items]
Aggregate purchase price				678
Acquired goodwill				$ 560