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Accounts Receivable, Net (Tables) | 12 Months Ended
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Dec. 31, 2021
Receivables [Abstract] |
Schedule of Accounts Receivable and Allowance for Doubtful Accounts | Accounts receivable and allowance for credit losses consist of the following:
|  | As of December 31, |
|  | 2020 |  |  | 2021 |
|  | RMB |  |  | RMB |  |  | US$ |
Accounts receivable |  |  | 3,252,396 |  |  |  | 2,317,034 |  |  |  | 363,593 |
Allowance for credit losses |  |  | (128,199 | ) |  |  | (177,563 | ) |  |  | (27,863 | )
Total |  |  | 3,124,197 |  |  |  | 2,139,471 |  |  |  | 335,730 |
Schedule of Analysis of Allowance for Doubtful Accounts | The movements in the allowance for credit losses were as follows:
|  |  |  |  | Year ended December 31,
|  | 2019 |  |  | 2020 |  |  | 2021 |
|  | RMB |  |  | RMB |  |  | RMB |  |  | US$ |
Beginning balance |  |  | 3,589 |  |  |  | 33,989 |  |  |  | 128,199 |  |  |  | 20,117 |
Additions charged to bad debt expense/current expected credit loss |  |  | 37,141 |  |  |  | 104,434 |  |  |  | 53,294 |  |  |  | 8,363 |
Reversal |  |  | (465 | ) |  |  | (8,751 | ) |  |  | — |  |  |  | — |
Write off |  |  | (6,276 | ) |  |  | (1,473 | ) |  |  | (3,930 | ) |  |  | (617 | )
Ending balance |  |  | 33,989 |  |  |  | 128,199 |  |  |  | 177,563 |  |  |  | 27,863 |

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- Definition Tabular disclosure of allowance for credit loss on financing receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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