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v3.19.1

Convertible senior notes (Details) $ / shares in Units, ¥ in Thousands, $ in Thousands |  |  | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 04, 2014 | Nov. 03, 2014 $ / shares | Dec. 31, 2018 USD ($) | Dec. 31, 2018 CNY (¥) | Dec. 31, 2018 CNY (¥) | Mar. 15, 2017 USD ($) | Mar. 15, 2017 CNY (¥) | Nov. 02, 2014 | Mar. 17, 2014 USD ($) $ / shares | Mar. 17, 2014 CNY (¥) | Mar. 16, 2013 $ / shares
ADS |  |  |  |  |  |  |  |  |  |  |
Convertible senior notes |  |  |  |  |  |  |  |  |  |  |
ADS ratio to ordinary shares |  | 0.20 |  |  |  |  |  | 2 |  |  |
Ordinary shares, par value |  |  |  |  |  |  |  |  | $ 0.001 |  |
Notes |  |  |  |  |  |  |  |  |  |  |
Convertible senior notes |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount of convertible notes |  |  |  |  |  |  |  |  | $ 632,500 | ¥ 4,391,448 |
Interest rate (as a percent) |  |  | 1.50% |  | 1.50% |  |  |  | 1.50% | 1.50% |
Redemption price due to fundamental change as percentage of principal amount |  |  | 100.00% | 100.00% |  |  |  |  |  |  |
Net proceeds from the Notes offering |  |  | $ 617,191 | ¥ 4,285,157 |  |  |  |  |  |  |
Discounts to initial purchaser |  |  | 14,231 |  | ¥ 98,806 |  |  |  |  |  |
Debt issuance costs |  |  | $ 1,078 | ¥ 7,485 |  |  |  |  |  |  |
Redemption amount of debt |  |  |  |  |  | $ 3,125 | ¥ 21,697 |  |  |  |
Notes | ADS |  |  |  |  |  |  |  |  |  |  |
Convertible senior notes |  |  |  |  |  |  |  |  |  |  |
ADS ratio to ordinary shares |  |  |  |  |  |  |  |  | 0.2 | 0.2 |
Conversion ratio | 4.9693 | 49.693 |  |  |  |  |  |  |  |  |
Conversion price per US$1,000 of principal amount |  | $ 20.124 |  |  |  |  |  |  |  |  | $ 201.24

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- Definition The number of underlying shares represented by one American Depository Receipt (ADR) or Global Depository Receipt (GDR). A value of '3' means that one ADR represents 3 underlying shares. If one underlying share represents 2 ADR's then the value would be represented as '0.5'. + References No definition available. + Details
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- Definition Face amount or stated value per share of common stock. + 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(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The price per share of the conversion feature embedded in the debt instrument. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031898-161870 + Details
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- Definition Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(5)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 + Details
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- Definition The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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