Segment Information Reportable Segments and Reconciliation to Consolidated Net Income (Detail) - USD ($) $ in Millions		3 Months Ended		6 Months Ended		12 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Disclosure [Line Items]
Net sales		$ 23,185	$ 19,340	$ 45,901	$ 39,081
Segment operating expenses		22,721	19,355	45,182	38,949
Income (loss) from operations		464	(15)	719	132
Stock-based compensation		(563)	(391)	(969)	(711)	$ (1,755)	$ (1,318)
Other operating income (expense), net		(48)	(28)	(92)	(63)
Total non-operating income (expense)		(102)	(12)	(336)	(39)
Provision for income taxes		(266)	(94)	(337)	(167)
Equity-method investment activity, net of tax		(4)	(5)	(11)	56
Net income (loss)		92	(126)	35	(18)	$ (188)	$ 181
Operating Segments
Segment Reporting Disclosure [Line Items]
Net sales		23,185	19,340	45,901	39,081
Segment operating expenses	[1]	22,110	18,936	44,121	38,175
Income (loss) from operations		1,075	404	1,780	906
North America | Operating Segments
Segment Reporting Disclosure [Line Items]
Net sales		13,796	10,994	27,202	21,802
Segment operating expenses	[1]	13,093	10,665	25,982	21,183
Income (loss) from operations		703	329	1,220	619
International | Operating Segments
Segment Reporting Disclosure [Line Items]
Net sales		7,565	7,341	15,310	15,224
Segment operating expenses	[1]	7,584	7,343	15,405	15,259
Income (loss) from operations		(19)	(2)	(95)	(35)
AWS | Operating Segments
Segment Reporting Disclosure [Line Items]
Net sales		1,824	1,005	3,389	2,055
Segment operating expenses	[1]	1,433	928	2,734	1,733
Income (loss) from operations		391	77	655	322
AWS
Segment Reporting Disclosure [Line Items]
Net sales		$ 1,824	$ 1,005	$ 3,389	$ 2,055

[1] Excludes stock-based compensation and “Other operating expense (income), net” which are not allocated to segments.