Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Cash Flows [Abstract]
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, BEGINNING OF PERIOD	$ 40,667	$ 37,842	$ 42,377	$ 36,410	$ 30,202	$ 23,554
OPERATING ACTIVITIES:
Net income	3,156	6,331	19,041	14,109	26,263	17,377
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	8,948	6,523	24,494	17,633	32,112	23,803
Stock-based compensation	3,180	2,288	9,077	6,646	11,639	8,486
Other operating expense (income), net	24	67	72	416	(415)	466
Other expense (income), net	340	(1,051)	(2,374)	(1,255)	(3,701)	(1,749)
Deferred income taxes	909	295	3,313	1,082	1,677	1,267
Changes in operating assets and liabilities:
Inventories	(7,059)	(3,899)	(7,572)	(3,178)	(7,242)	(4,694)
Accounts receivable, net and other	(4,890)	(2,016)	(11,607)	(3,608)	(16,168)	(7,515)
Accounts payable	3,832	3,658	(4,387)	4,231	8,863	14,914
Accrued expenses and other	(1,465)	(310)	(7,210)	(1,375)	(84)	1,520
Unearned revenue	338	78	1,394	932	1,727	1,417
Net cash provided by (used in) operating activities	7,313	11,964	24,241	35,633	54,671	55,292
INVESTING ACTIVITIES:
Purchases of property and equipment	(15,748)	(11,063)	(42,118)	(25,317)	(56,941)	(30,629)
Proceeds from property and equipment sales and incentives	997	1,255	3,192	3,467	4,822	4,838
Acquisitions, net of cash acquired, and other	(654)	(1,735)	(1,604)	(1,945)	(1,985)	(2,722)
Sales and maturities of marketable securities	15,808	13,135	46,847	32,899	64,185	40,525
Purchases of marketable securities	(15,231)	(17,468)	(51,891)	(51,678)	(72,692)	(58,122)
Net cash provided by (used in) investing activities	(14,828)	(15,876)	(45,574)	(42,574)	(62,611)	(46,110)
FINANCING ACTIVITIES:
Proceeds from short-term debt, and other	2,187	1,311	5,289	4,361	7,724	5,042
Repayments of short-term debt, and other	(1,917)	(1,349)	(5,094)	(3,886)	(7,385)	(4,701)
Proceeds from long-term debt	176	0	18,803	9,994	19,334	10,412
Repayments of long-term debt	(509)	(1,198)	(589)	(1,439)	(703)	(2,490)
Principal repayments of finance leases	(2,693)	(2,857)	(8,903)	(8,274)	(11,271)	(11,054)
Principal repayments of financing obligations	(20)	(12)	(115)	(44)	(124)	(68)
Net cash provided by (used in) financing activities	(2,776)	(4,105)	9,391	712	7,575	(2,859)
Foreign currency effect on cash, cash equivalents, and restricted cash	(199)	377	(258)	21	340	325
Net increase (decrease) in cash, cash equivalents, and restricted cash	(10,490)	(7,640)	(12,200)	(6,208)	(25)	6,648
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, END OF PERIOD	$ 30,177	$ 30,202	$ 30,177	$ 30,202	$ 30,177	$ 30,202