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Other comprehensive income (Tables) | 12 Months Ended
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Dec. 31, 2019
Other comprehensive income/(loss) |
Schedule of changes in the composition of accumulated other comprehensive income/(loss) attributable to ordinary shareholders |
|  | Foreign currency translation adjustments |  |  | Net unrealized gains/(losses) on available-for-sale securities |  |  | Total |
|  | RMB |  |  | RMB |  |  | RMB |
Balances as of December 31, 2016 |  |  | 1,483,737 |  |  |  | 59,656 |  |  |  | 1,543,393 |
Other comprehensive income/(loss) |  |  | (822,052 | ) |  |  | 1,120,740 |  |  |  | 298,688 |
Balances as of December 31, 2017 |  |  | 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) |  |  | 2,696,784 |  |  |  | (23,127 | ) |  |  | 2,673,657 |
Balances as of December 31, 2018 |  |  | 3,358,469 |  |  |  | 627 |  |  |  | 3,359,096 |
Other comprehensive income |  |  | 749,865 |  |  |  | 54,186 |  |  |  | 804,051 |
Balances as of December 31, 2019 |  |  | 4,108,334 |  |  |  | 54,813 |  |  |  | 4,163,147 |

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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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