Debt and Commitments (Details Textual) (USD $)	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Debt and Commitments (Textual) [Abstract]
Borrowings under revolving credit facility	$ 2,250,000,000
Line of credit facility borrowing capacity, replaced	2,000,000,000
Line of credit facility fully transferable amount	100,000,000
Period of Revolving credit facility	4 years
Interest paid in cash	$ 19,000,000	$ 11,000,000	$ 26,000,000
Bank term debt [Member]
Operating Leased Assets [Line Items]
Weighted average interest rate of Bank term debt	9.80%	16.20%
Government loans [Member]
Operating Leased Assets [Line Items]
Weighted average interest rate of Bank term debt	5.80%	2.00%

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant