Operating Segment Information (Net Sales and Long-Lived Assets by Country) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 4,910	$ 4,625	$ 4,730	$ 4,401	$ 5,041	$ 4,519	$ 4,534	$ 4,272	$ 18,666	$ 18,366	$ 17,099
Long-Lived Assets	6,586				6,654				6,586	6,654	6,642
UNITED STATES [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									8,035	8,221	8,174
Long-Lived Assets	4,464				4,431				4,464	4,431	4,443
BRAZIL [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									3,133	3,290	2,530
Long-Lived Assets	405				459				405	459	437
All Other Segments [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									7,498	6,855	6,395
Long-Lived Assets	$ 1,717				$ 1,764				$ 1,717	$ 1,764	$ 1,762