XML 108 R78.htm IDEA: XBRL DOCUMENT v3.19.1
Restricted cash (Details)
¥ in Thousands, $ in Thousands
Dec. 31, 2018
USD ($)
Dec. 31, 2018
CNY (¥)
Dec. 31, 2017
CNY (¥)
Restricted cash      
Restricted cash $ 471,182 ¥ 3,239,613 ¥ 4,110,210