Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Cash Flows [Abstract]
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, BEGINNING OF PERIOD	$ 23,507	$ 17,616	$ 32,173	$ 21,856	$ 20,536	$ 13,851
OPERATING ACTIVITIES:
Net income	2,625	2,534	6,186	4,163	12,096	6,275
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization of property and equipment and capitalized content costs, operating lease assets, and other	5,202	3,630	10,056	7,301	18,097	13,711
Stock-based compensation	1,971	1,468	3,245	2,651	6,012	4,914
Other operating expense (income), net	80	85	67	141	200	240
Other expense (income), net	(7)	110	(142)	(75)	152	(207)
Deferred income taxes	105	(139)	520	3	958	(380)
Changes in operating assets and liabilities:
Inventories	(2,100)	(1,090)	(1,381)	1,130	(3,826)	(2,717)
Accounts receivable, net and other	(2,193)	(1,364)	(2,594)	(336)	(6,873)	(4,859)
Accounts payable	3,668	2,703	(2,716)	(7,513)	8,060	4,364
Accrued expenses and other	(623)	(205)	(3,556)	(2,430)	(653)	(491)
Unearned revenue	390	(283)	1,278	623	1,806	943
Net cash provided by (used in) operating activities	9,118	7,449	10,963	5,658	36,029	21,793
INVESTING ACTIVITIES:
Purchases of property and equipment	(3,562)	(3,243)	(6,852)	(6,341)	(13,938)	(13,035)
Proceeds from property and equipment incentives	919	294	1,488	665	2,927	1,663
Acquisitions, net of cash acquired, and other	(117)	(866)	(1,285)	(879)	(2,592)	(14,173)
Sales and maturities of marketable securities	5,161	1,660	7,804	4,337	11,706	10,034
Purchases of marketable securities	(9,950)	(537)	(16,827)	(1,007)	(22,919)	(8,173)
Net cash provided by (used in) investing activities	(7,549)	(2,692)	(15,672)	(3,225)	(24,816)	(23,684)
FINANCING ACTIVITIES:
Proceeds from long-term debt and other	283	96	473	221	1,020	16,380
Repayments of long-term debt and other	(112)	(149)	(464)	(351)	(781)	(1,564)
Principal repayments of finance leases	(2,327)	(1,284)	(4,541)	(3,297)	(8,693)	(6,037)
Principal repayments of financing obligations	(2)	(57)	(3)	(129)	(211)	(244)
Net cash provided by (used in) financing activities	(2,158)	(1,394)	(4,535)	(3,556)	(8,665)	8,535
Foreign currency effect on cash, cash equivalents, and restricted cash	47	(443)	36	(197)	(119)	41
Net increase (decrease) in cash, cash equivalents, and restricted cash	(542)	2,920	(9,208)	(1,320)	2,429	6,685
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, END OF PERIOD	22,965	20,536	22,965	20,536	22,965	20,536
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid for interest on long-term debt	147	168	433	450	837	628
Cash paid for operating leases	838	0	1,547	0	1,547	0
Cash paid for interest on finance leases	150	85	315	159	536	273
Cash paid for interest on financing obligations	4	40	5	95	105	176
Cash paid for income taxes, net of refunds	283	300	451	813	822	1,077
Assets acquired under operating leases	2,220	0	3,094	0	3,094	0
Property and equipment acquired under finance leases	3,307	2,335	5,935	4,605	11,944	9,631
Property and equipment acquired under build-to-suit arrangements	$ 283	$ 795	$ 719	$ 1,536	$ 2,825	$ 3,128