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Other comprehensive income (Tables) | 9 Months Ended
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Sep. 30, 2019
Other comprehensive income/(loss) |
Schedule of changes in the composition of accumulated other comprehensive income attributable to ordinary shareholders |
|  | Foreign currency translation adjustments |  |  | Net unrealized gains/(losses) on available-for-sale securities |  |  | Total |
|  | RMB |  |  | RMB |  |  | RMB |
Balances as of January 1, 2018 |  |  | 661,685 |  |  |  | 1,180,396 |  |  |  | 1,842,081 |
Cumulative effect of changes in accounting principles related to financial instruments |  |  | — |  |  |  | (1,156,642 | ) |  |  | (1,156,642 | )
Other comprehensive income/(loss) |  |  | 2,768,935 |  |  |  | (21,076 | ) |  |  | 2,747,859 |
Balances as of September 30, 2018 |  |  | 3,430,620 |  |  |  | 2,678 |  |  |  | 3,433,298 |
Balances as of January 1, 2019 |  |  | 3,358,469 |  |  |  | 627 |  |  |  | 3,359,096 |
Other comprehensive income |  |  | 1,523,784 |  |  |  | 37,583 |  |  |  | 1,561,367 |
Balances as of September 30, 2019 |  |  | 4,882,253 |  |  |  | 38,210 |  |  |  | 4,920,463 |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580 + Details
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