Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data	Jun. 30, 2011	Dec. 31, 2010
Consolidated Balance Sheets
Fixed assets, accumulated depreciation and amortization	$ 1,366	$ 1,411
Preferred stock, par value	$ 1	$ 1
Preferred stock, authorized	6,000,000	6,000,000
Preferred stock, issued	0	0
Common stock, par value	$ 1	$ 1
Common stock, authorized	1,600,000,000	1,600,000,000
Common stock, issued	560,641,640	560,641,640
Treasury shares, shares	19,407,454	20,132,120