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Accounts Receivable (Tables) | 12 Months Ended
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Dec. 31, 2019
Receivables [Abstract] |
Schedule of Accounts Receivable |
|  | As of December 31, |
|  | 2018 |  |  | 2019 |  |  | 2019 |
|  | RMB |  |  | RMB |  |  | US$ |
|  | (In millions) |
Accounts receivable |  |  | 6,614 |  |  |  | 8,344 |  |  |  | 1,198 |
Allowance for doubtful accounts |  |  | (599 | ) |  |  | (928 | ) |  |  | (133 | )
|  |  | 6,015 |  |  |  | 7,416 |  |  |  | 1,065 |
Movements in Allowance for Doubtful Accounts Balance | The movements in the allowance for doubtful accounts were as follows:
|  | 2017 |  |  | 2018 |  |  | 2019 |  |  | 2019 |
|  | RMB |  |  | RMB |  |  | RMB |  |  | US$ |
|  | (In millions) |
Balance as of January 1 |  |  | 177 |  |  |  | 316 |  |  |  | 599 |  |  |  | 86 |
Amounts charged to expenses |  |  | 190 |  |  |  | 299 |  |  |  | 331 |  |  |  | 47 |
Amounts written off |  |  | (51 | ) |  |  | (16 | ) |  |  | (2 | ) |  |  | — |
Balance as of December 31 |  |  | 316 |  |  |  | 599 |  |  |  | 928 |  |  |  | 133 |

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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=118936363&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=119407570&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=6877327&loc=d3e13212-122682 + Details
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