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Long-Term Debt Obligations - China Loan Agreement - Additional Information (Detail) - China Loan Agreement [Member] - Unsecured Facility [Member] - CNY (¥) | 1 Months Ended | 6 Months Ended
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Mar. 31, 2019 | Jun. 30, 2019
Debt Instrument [Line Items] |  |
Unsecured facility, maximum borrowing capacity | ¥ 3,500,000,000 |
RMB-denominated Loans [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument interest rate description |  | (i) for RMB-denominated loans, 90% of the one-year rate published by the People’s Bank of China
RMB-denominated Loans [Member] | Peoples Bank of China One-year Rate [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument percentage of interest rate on variable rate | 90.00% |
U.S. Dollar-denominated Loans [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument interest rate description |  | (ii) for U.S. dollar-denominated loans, the sum of one-year LIBOR plus 1.0%.
U.S. Dollar-denominated Loans [Member] | LIBOR [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument basis spread on variable rate | 1.00% |

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- Definition Debt instrument percentage of interest rate on variable rate. + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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