Prepaid Land Use Rights, net (Narrative) (Details) - 3 months ended Mar. 31, 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	$ 8,456,966
Prepaid Land Use Rights, Net 4 | ¥		¥ 53.1
Prepaid Land Use Rights, Net 5	495,477
Prepaid Land Use Rights, Net 6 | ¥		¥ 3.1
Prepaid Land Use Rights, Net 7	40,778
Prepaid Land Use Rights, Net 8	$ 44,174