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Subsequent events (Details) ¥ / shares in Units, ¥ in Thousands, $ in Thousands	Dec. 31, 2022 CNY (¥) ¥ / shares	Dec. 31, 2022 USD ($)	Dec. 31, 2021 CNY (¥)
Subsequent Event [Line Items]
Undistributed earning	¥ 5,604,954	$ 812,642	¥ 5,187,323
Board of Directors Chairman
Subsequent Event [Line Items]
Undistributed earning | ¥	¥ 176,500
Final dividend payable | ¥ / shares	¥ 5.5

X

- Definition

The per share amount of a dividend declared, but not paid, as of the financial reporting date.

+ References

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- Definition

The cumulative amount of the reporting entity's undistributed earnings or deficit.

+ References

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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