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Other Financial Liabilities - Summary of Loans and Borrowings (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 CNY (¥) | Dec. 31, 2019 CNY (¥) | Dec. 31, 2020 USD ($)
Disclosure of detailed information about borrowings [line items] |  |  |
Non-current borrowings | ¥ 500,000 |  | $ 77,264
Current borrowings | ¥ 1,730,000 | ¥ 2,055,046 | $ 267,334
Non-current borrowings [member] | Renminbi [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Effective interest rate | 3.30% |  | 3.30%
Maturity | 2022 |  |
Non-current borrowings | ¥ 500,000 |  | $ 77,264
Current borrowings [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Current borrowings |  | ¥ 2,055,046 |
Current borrowings [member] | Singapore dollar [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Effective interest rate |  | 2.84% |
Maturity |  | 2020 |
Current borrowings |  | ¥ 15,522 |
Current borrowings [member] | Renminbi [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Maturity | 2021 | 2020 |
Current borrowings | ¥ 1,730,000 | ¥ 1,900,000 | $ 267,334
Current borrowings [member] | Renminbi [Member] | Bottom of range [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Effective interest rate | 1.80% | 3.70% | 1.80%
Current borrowings [member] | Renminbi [Member] | Top of range [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Effective interest rate | 4.05% | 4.13% | 4.05%
Current borrowings [member] | USD [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Effective interest rate |  | 2.52% |
Maturity |  | 2020 |
Current borrowings |  | ¥ 139,524 |
MUFG Bank Ltd [member] | Singapore dollar [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Current borrowings |  | ¥ 15,522 |

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