Consolidated Statements Of Operations (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net product sales	$ 70,080us-gaap_SalesRevenueGoodsNet	$ 60,903us-gaap_SalesRevenueGoodsNet	$ 51,733us-gaap_SalesRevenueGoodsNet
Net service sales	18,908us-gaap_SalesRevenueServicesNet	13,549us-gaap_SalesRevenueServicesNet	9,360us-gaap_SalesRevenueServicesNet
Total net sales	88,988us-gaap_SalesRevenueNet	74,452us-gaap_SalesRevenueNet	61,093us-gaap_SalesRevenueNet
Operating expenses:
Cost of sales	62,752us-gaap_CostOfGoodsAndServicesSold	54,181us-gaap_CostOfGoodsAndServicesSold	45,971us-gaap_CostOfGoodsAndServicesSold
Fulfillment	10,766amzn_FulfillmentExpense	8,585amzn_FulfillmentExpense	6,419amzn_FulfillmentExpense
Marketing	4,332us-gaap_MarketingExpense	3,133us-gaap_MarketingExpense	2,408us-gaap_MarketingExpense
Technology and content	9,275amzn_TechnologyAndContentExpense	6,565amzn_TechnologyAndContentExpense	4,564amzn_TechnologyAndContentExpense
General and administrative	1,552us-gaap_GeneralAndAdministrativeExpense	1,129us-gaap_GeneralAndAdministrativeExpense	896us-gaap_GeneralAndAdministrativeExpense
Other operating expense (income), net	133us-gaap_OtherCostAndExpenseOperating	114us-gaap_OtherCostAndExpenseOperating	159us-gaap_OtherCostAndExpenseOperating
Total operating expenses	88,810us-gaap_CostsAndExpenses	73,707us-gaap_CostsAndExpenses	60,417us-gaap_CostsAndExpenses
Income from operations	178us-gaap_OperatingIncomeLoss	745us-gaap_OperatingIncomeLoss	676us-gaap_OperatingIncomeLoss
Interest income	39us-gaap_InvestmentIncomeInterest	38us-gaap_InvestmentIncomeInterest	40us-gaap_InvestmentIncomeInterest
Interest expense	(210)us-gaap_InterestExpense	(141)us-gaap_InterestExpense	(92)us-gaap_InterestExpense
Other income (expense), net	(118)us-gaap_OtherNonoperatingIncomeExpense	(136)us-gaap_OtherNonoperatingIncomeExpense	(80)us-gaap_OtherNonoperatingIncomeExpense
Total non-operating income (expense)	(289)us-gaap_NonoperatingIncomeExpense	(239)us-gaap_NonoperatingIncomeExpense	(132)us-gaap_NonoperatingIncomeExpense
Income (loss) before income taxes	(111)	506	544
Provision for income taxes	(167)us-gaap_IncomeTaxExpenseBenefit	(161)us-gaap_IncomeTaxExpenseBenefit	(428)us-gaap_IncomeTaxExpenseBenefit
Equity-method investment activity, net of tax	37	(71)	(155)
Net income (loss)	$ (241)us-gaap_NetIncomeLoss	$ 274us-gaap_NetIncomeLoss	$ (39)us-gaap_NetIncomeLoss
Basic earnings per share	$ (0.52)us-gaap_EarningsPerShareBasic	$ 0.60us-gaap_EarningsPerShareBasic	$ (0.09)us-gaap_EarningsPerShareBasic
Diluted earnings per share	$ (0.52)us-gaap_EarningsPerShareDiluted	$ 0.59us-gaap_EarningsPerShareDiluted	$ (0.09)us-gaap_EarningsPerShareDiluted
Weighted average shares used in computation of earnings per share:
Basic	462	457	453
Diluted	462	465	453

Costs incurred to operate and staff fulfillment and customer service centers, including buying, receiving, inspecting, and warehousing inventories; picking, packaging and preparing customer orders for shipment; payment processing and related transaction costs. Fulfillment costs also include amounts paid to third parties that assist us in fulfillment and customer service operations.

No definition available.