Basis of Presentation and Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2012

Basis Of Presentation And Summary Of Significant Accounting Policies Tables [Abstract]

Schedule of Earnings Per Share Reconciliation [Table Text Block]

		Three Months Ended
		March 31,
(in millions)			2012	2011
Weighted average shares for basic EPS			650	674
Dilutive effect of shares issuable under stock-based
	compensation plans		17	19
Weighted average shares for diluted EPS			667	693