Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash Flows From Operating Activities
Net loss	$ (888,663)	$ (294,040)	$ (74,014)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	422,590	231,931	106,083
Stock-based compensation	197,999	156,496	80,737
Amortization of discount on convertible debt	72,063	69,734	9,143
Inventory write-downs	44,940	15,609	8,918
Amortization of Department of Energy (DOE) loan origination costs			5,558
Change in fair value of DOE warrant liability			(10,692)
Fixed asset disposal	37,723	14,178	1,796
Other non-cash operating activities	26,373	7,471	1,815
Foreign currency transaction (gain) loss	55,765	(1,891)	(13,498)
Changes in operating assets and liabilities
Accounts receivable	46,267	(183,658)	(21,705)
Inventories and operating lease vehicles	(1,573,860)	(1,050,264)	(460,561)
Prepaid expenses and other current assets	(29,595)	(60,637)	(17,533)
Other assets	(24,362)	(4,493)	(434)
Accounts payable and accrued liabilities	263,345	414,856	87,413
Deferred revenue	322,203	209,681	268,098
Customer deposits	36,721	106,230	24,354
Resale value guarantee	442,295	249,492	236,299
Other long-term liabilities	23,697	61,968	33,027
Net cash provided by (used in) operating activities	(524,499)	(57,337)	264,804
Cash Flows From Investing Activities
Purchases of property and equipment excluding capital leases	(1,634,850)	(969,885)	(264,224)
Withdrawals out of our dedicated DOE account, net			14,752
(Increase) decrease in other restricted cash	(26,441)	(3,849)	55
Purchases of short-term marketable securities		(205,841)
Maturities of short-term marketable securities		189,131
Business acquisition	(12,260)
Net cash used in investing activities	(1,673,551)	(990,444)	(249,417)
Cash Flows From Financing Activities
Proceeds from issuance of convertible and other debt	318,972	2,300,000	660,000
Proceeds from issuance of common stock in public offering	730,000		360,000
Proceeds from issuance of warrants		389,160	120,318
Proceeds from exercise of stock options and other stock issuances	106,611	100,455	95,307
Proceeds from issuance of common stock in private placement	20,000		55,000
Principal payments on DOE loans			(452,337)
Purchase of convertible note hedges		(603,428)	(177,540)
Common stock and convertible debt issuance costs	(17,025)	(35,149)	(16,901)
Principal payments on capital leases and other debt	(203,780)	(11,179)	(8,425)
Collateralized lease borrowing	568,745	3,271
Net cash provided by financing activities	1,523,523	2,143,130	635,422
Effect of exchange rate changes on cash and cash equivalents	(34,278)	(35,525)	(6,810)
Net increase (decrease) in cash and cash equivalents	(708,805)	1,059,824	643,999
Cash and cash equivalents at beginning of period	1,905,713	845,889	201,890
Cash and cash equivalents at end of period	1,196,908	1,905,713	845,889
Supplemental Disclosures
Interest paid	32,060	20,539	9,041
Income taxes paid	9,461	3,120	257
Supplemental noncash investing activities
Acquisition of property and equipment included in accounts payable and accrued liabilities	267,334	254,393	$ 38,789
Estimated fair market value of facilities under build-to-suit lease	$ 174,749	$ 50,076