Short-Term Bank Borrowings (Details Textual) (USD $)
In Millions, unless otherwise specified

6 Months Ended

Jun. 30, 2013

Dec. 31, 2012

Short-Term Bank Borrowings (Textual)

Range of maturity term

Two to twelve months

Interest range minimum

1.00%

1.37%

Interest range maximum

7.20%

7.93%

Amount guaranteed by related party and third party entities and individuals

$ 259

Amount secured by land, buildings and equipment

Land buildings and equipment carrying amount

Shanghai Pudong Development Bank [Member]

Short-Term Bank Borrowings (Textual)

Short term loan payable secured, carrying amount

Shanghai Pudong Development Bank [Member] | One year fixed term deposit [Member]

Short-Term Bank Borrowings (Textual)

Short term loan payable secured, carrying amount

Bank of China [Member]

Short-Term Bank Borrowings (Textual)

Short term loan payable secured, carrying amount

Bank of China [Member] | One year fixed term deposit [Member]

Short-Term Bank Borrowings (Textual)

Short term loan payable secured, carrying amount

China Construction bank [Member]

Short-Term Bank Borrowings (Textual)

Short term loan payable secured, carrying amount

China Construction bank [Member] | One year fixed term deposit [Member]

Short-Term Bank Borrowings (Textual)

Short term loan payable secured, carrying amount

Agricultural Bank of China [Member]

Short-Term Bank Borrowings (Textual)

Short term loan payable secured, carrying amount

Agricultural Bank of China [Member] | One year fixed term deposit [Member]

Short-Term Bank Borrowings (Textual)

Short term loan payable secured, carrying amount

Bank of Shanghai [Member]

Short-Term Bank Borrowings (Textual)

Short term loan payable secured, carrying amount

Bank of Shanghai [Member] | One year fixed term deposit [Member]

Short-Term Bank Borrowings (Textual)

Short term loan payable secured, carrying amount

Bank of Communication [Member]

Short-Term Bank Borrowings (Textual)

Short term loan payable secured, carrying amount

Bank of Communication [Member] | One year fixed term deposit [Member]

Short-Term Bank Borrowings (Textual)

Short term loan payable secured, carrying amount

Guangdong Development Bank [Member]

Short-Term Bank Borrowings (Textual)

Short term loan payable secured, carrying amount

Guangdong Development Bank [Member] | One year fixed term deposit [Member]

Short-Term Bank Borrowings (Textual)

Short term loan payable secured, carrying amount

Pin An Bank [Member]

Short-Term Bank Borrowings (Textual)

Short term loan payable secured, carrying amount

Pin An Bank [Member] | One year fixed term deposit [Member]

Short-Term Bank Borrowings (Textual)

Short term loan payable secured, carrying amount

$ 16

Bank loans in RMB [Member]

Short-Term Bank Borrowings (Textual)

Short-term debt, weighted average interest rate

6.25%

6.21%

Bank Loans In USD [Member]

Short-Term Bank Borrowings (Textual)

Short-term debt, weighted average interest rate

2.52%

3.97%