Prepaid Land Use Rights, net (Narrative) (Details) - 6 months ended Jun. 30, 2018 ¥ in Millions	USD ($) yr	CNY (¥) yr
Prepaid Land Use Rights, Net 1	153,832	153,832
Prepaid Land Use Rights, Net 2 | yr	50	50
Prepaid Land Use Rights, Net 3	$ 8,018,312
Prepaid Land Use Rights, Net 4 | ¥		¥ 53.1
Prepaid Land Use Rights, Net 5	469,777
Prepaid Land Use Rights, Net 6 | ¥		¥ 3.1
Prepaid Land Use Rights, Net 7	40,934
Prepaid Land Use Rights, Net 8	44,068
Prepaid Land Use Rights, Net 9	81,712
Prepaid Land Use Rights, Net 10	$ 88,242