Income Taxes (Tables)

12 Months Ended

Dec. 31, 2021

Income Tax Disclosure [Abstract]

Summary of Loss Before Income Taxes

The Group’s loss before income taxes consists of:

	For the year ended December 31,
	2019			2020			2021			2021
	RMB			RMB			RMB			US$
Non-PRC		(1,243,926	)		(1,130,036	)		(2,024,738	)		(317,726	)
PRC		(8,980,961	)		(5,853,841	)		(3,987,250	)		(625,687	)
		(10,224,887	)		(6,983,877	)		(6,011,988	)		(943,413	)

Components of Income Tax Expense

Income tax expense for the years ended December 31, 2019, 2020 and 2021 consists of:

	For the year ended December 31,
	2019			2020			2021		2021
	RMB			RMB			RMB		US$
Current income tax expense		129,164			65,255			78,010		12,241
Deferred income tax (benefit)/expense		(77,312	)		(41,979	)		18,535		2,909
		51,852			23,276			96,545		15,150

Summary of Reconciliation of Tax Expense Computed by Applying Statutory Income Tax Rate to Pre-Tax Loss

The reconciliation of total tax expense computed by applying the respective statutory income tax rate to pre-tax loss is as follows:

	For the year ended December 31,
	2019			2020			2021			2021
	RMB			RMB			RMB			US$
Income tax benefit at PRC statutory rate		(2,556,222	)		(1,745,969	)		(1,502,997	)		(235,853	)
Effect of differing tax rates in different jurisdictions		293,976			291,884			377,604			59,254
Non-deductible expenses		436,312			238,899			181,972			28,555
Research and development super-deduction		(66,026	)		(159,919	)		(162,103	)		(25,437	)
Effect of PRC preferential tax rates and tax holiday		707,518			281,437			269,585			42,304
Other adjustments		104,484			(73,027	)		(2,151	)		(338	)
Change in valuation allowance		1,131,810			1,189,971			934,635			146,665
Income tax expense		51,852			23,276			96,545			15,150

Summary of Tax Effects of Temporary Differences to Deferred Tax Balances

The tax effects of temporary differences that give rise to the deferred tax balances at December 31, 2020 and 2021 are as follows:

	As of December 31,
	2020			2021			2021
	RMB			RMB			US$
Deferred tax assets:
Accrued expenses and others		117,387			208,030			32,644
Bad debt provision		104,458			77,053			12,091
Net operating losses carried forward		1,318,562			1,756,698			275,664
Recorded cost relating to capitalized assets		3,493,048			3,902,201			612,340
Fixed assets depreciation		18,651			18,630			2,925
Valuation allowance		(4,941,826	)		(5,876,461	)		(922,145	)
Deferred tax assets, net		110,280			86,151			13,519
Deferred tax liabilities:
Long-lived assets arising from acquisitions		63,521			57,927			9,090

	As of December 31,
	2020		2021		2021
	RMB		RMB		US$
Classification in the consolidated balance sheets:
Deferred tax assets, net		51,347		31,351		4,920
Deferred tax liabilities		4,588		3,127		491