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Consolidated Statements Of Operations (Parenthetical) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Fulfillment    
Stock-based compensation $ 116 $ 90
Marketing    
Stock-based compensation 56 35
Technology and content    
Stock-based compensation 317 233
General and administrative    
Stock-based compensation $ 55 $ 49