Summary of Significant Accounting Policies - Schedule of Disaggregation of Revenue by Major Source (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation Of Revenue [Line Items]
Leasing revenues	$ 208,362	$ 239,816	$ 423,482	$ 413,252
Total revenues	6,349,676	4,002,231	10,891,140	7,410,982
Services and Other [Member]
Disaggregation Of Revenue [Line Items]
Total revenues from sales and services	605,079	270,142	1,098,021	533,554
Sales and Services [Member]
Disaggregation Of Revenue [Line Items]
Total revenues from sales and services	5,998,871	3,622,609	10,212,654	6,745,797
Automotive [Member] \| Automotive Sales without Resale Value Guarantee [Member]
Disaggregation Of Revenue [Line Items]
Total revenues from sales and services	4,918,301	2,698,239	8,601,682	4,880,753
Automotive [Member] \| Automotive Sales with Resale Value Guarantee [Member]
Disaggregation Of Revenue [Line Items]
Total revenues from sales and services	138,507	365,616	(252,114)	664,654
Automotive [Member] \| Automotive Regulatory Credits [Member]
Disaggregation Of Revenue [Line Items]
Total revenues from sales and services	111,219	54,010	327,200	134,339
Automotive [Member] \| Automotive Leasing [Member]
Disaggregation Of Revenue [Line Items]
Leasing revenues	208,362	239,816	423,482	413,252
Energy Generation and Storage [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	368,208	374,408	692,869	784,430
Energy Generation and Storage [Member] \| Energy Generation and Storage Sales [Member]
Disaggregation Of Revenue [Line Items]
Total revenues from sales and services	225,765	234,602	437,865	532,497
Energy Generation and Storage [Member] \| Energy Generation and Storage Leasing [Member]
Disaggregation Of Revenue [Line Items]
Leasing revenues	$ 142,443	$ 139,806	$ 255,004	$ 251,933

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The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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