Segment Information (Details Textuals) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2012 Segment	Jun. 30, 2011
Segment Information [Abstract]
Number of segments		6
Segment Reporting Information [Line Items]
Prior period operating earnings reclassifications to conform with current period presentation	$ 24		$ 47
Prior period adjustment to operating earnings tax expense	14		28
Latin America [Member]
Segment Reporting Information [Line Items]
Prior period operating earnings reclassifications to conform with current period presentation	(3)		(7)
Prior period adjustment to operating earnings tax expense	(1)		(3)
Corporate & Other [Member]
Segment Reporting Information [Line Items]
Prior period operating earnings reclassifications to conform with current period presentation	27		54
Prior period adjustment to operating earnings tax expense	$ 15		$ 31