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Debt Disclosure (Tables) | 12 Months Ended
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Dec. 31, 2017
Debt Disclosure [Abstract] |
Summary of Bank Borrowings | Bank borrowings are as follows as of the respective balance sheet dates:
|  | December 31, |
|  | 2016 |  |  | 2017 |
|  | RMB |  |  | RMB |  |  | US$ |
Short-term bank borrowings |  |  | 1,683,676 |  |  |  | 50,000 |  |  |  | 7,685 |
Long-term bank borrowings, current portion |  |  | 39,303 |  |  |  | 70,289 |  |  |  | 10,803 |
|  |  | 1,722,979 |  |  |  | 120,289 |  |  |  | 18,488 |
Long-term bank borrowings, non-current portion |  |  | 268,221 |  |  |  | 187,638 |  |  |  | 28,839 |
Total bank borrowings |  |  | 1,991,200 |  |  |  | 307,927 |  |  |  | 47,327 |
Secured or Guaranteed Short Term Bank Borrowings | Bank borrowings as of December 31, 2016 and 2017 were secured/guaranteed by the following: December 31, 2016
Short-term bank borrowings |  |  | Secured/guaranteed by
(RMB) |  |  |
| 1,520,000 |  |  | Guaranteed by restricted cash of RMB1,751,055.
| 20,000 |  |  | Guaranteed by noncontrolling shareholder of Aipu Group
| 143,676 |  |  | Unsecured borrowings.
| 1,683,676 |  |  |
Long-term bank and other borrowings (including current portion) |  |  | Secured/guaranteed by
(RMB) |  |  |
| 1,600 |  |  | Secured by a subsidiary’s building with net book value of RMB7,938 (Note 8).
| 13,817 |  |  | Secured by a subsidiary’s computer and network equipment with net book value of RMB31,506 (Note 8).
| 164,000 |  |  | Secured by a subsidiary’s construction-in-progress and land use rights with net book value of RMB318,259 and RMB17,232, respectively (Note 8/Note 10).
| 128,107 |  |  | Unsecured borrowings.
| 307,524 |  |  |
December 31, 2017 Short-term bank borrowings |  |  | Secured/guaranteed by
(RMB) |  |  |
| 50,000 |  |  | Secured by restricted cash of RMB50,809 (US$7,809).
| 50,000 |  |  |
Long-term bank borrowings (including current portion) |  |  | Secured/guaranteed by
(RMB) |  |  |
| 158,000 |  |  | Secured by a subsidiary’s fixed assets and land-use right with net book value of RMB344,932 (US$53,015) and RMB16,818 (US$2,585), respectively (Note 8/Note 10).
| 99,927 |  |  | Unsecured borrowings
| 257,927 |  |  |
Repayments of Principal Amounts of Long-Term Borrowings, Including Bonds Payable, Bank and Other Borrowings | The following table summarizes the aggregate required repayments of the principal amounts of the Company’s long-term borrowings, including the bonds payable and bank borrowings (Note 13) in the succeeding five years and thereafter:
|  | RMB |  |  | US$ |
For the years ending December 31, |  |  |  |  |  |  |  |
2018 |  |  | 120,289 |  |  |  | 18,488 |
2019 |  |  | 75,638 |  |  |  | 11,625 |
2020 |  |  | 1,992,760 |  |  |  | 306,281 |
2021 |  |  | 39,000 |  |  |  | 5,994 |
2022 thereafter |  |  | 40,500 |  |  |  | 6,225 |

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