Financing Receivables (Details) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Financing Receivable Recorded Investment [Line Items]
Financing Receivable	$ 278	$ 151
Dominican Republic [Member]
Financing Receivable Recorded Investment [Line Items]
Financing Receivable	52
Argentina [Member]
Financing Receivable Recorded Investment [Line Items]
Financing Receivable	$ 213