Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2011

Short-Term Debt and Long-Term Debt [Abstract]

Long-term debt outstanding

	At December 31
	2011			2010
3.95% notes due 2014	$	1,998		$	1,998
3.45% notes due 2012		–			1,500
4.95% notes due 2019		1,500			1,500
8.625% debentures due 2032		147			147
8.625% debentures due 2031		107			107
7.5% debentures due 2043		83			83
8% debentures due 2032		74			74
7.327% amortizing notes due 20141		59			72
9.75% debentures due 2020		54			54
8.875% debentures due 2021		40			40
Medium-term notes, maturing from 2021 to 2038 (6.02%)2		38			38
Fixed interest rate notes, maturing 2011 (9.378%)2		–			19
Other long-term debt (8.07%)2		1			4
Total including debt due within one year		4,101			5,636
Debt due within one year		(17	)		(33	)
Reclassified from short-term debt		5,600			5,400
Total long-term debt	$	9,684		$	11,003

1	Guarantee of ESOP debt.
2	Weighted-average interest rate at December 31, 2011 and 2010.