Consolidated Statements of Financial Position (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Consolidated Statements of Financial Position [Abstract]
Accumulated amortization on other purchased intangibles	$ 1,650	$ 1,613
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	800,000,000	800,000,000
Common stock, shares issued	253,889,622	290,956,752
Common stock, shares outstanding	253,889,622	290,956,752
Preferred Stock, par value	$ 1	$ 1
Preferred Stock, shares authorized	10,000,000	10,000,000
Preferred Stock, shares issued
Preferred Stock, shares outstanding