Weighted Average Shares Outstanding (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Per Share (Tables) [Abstract]

Schedule of Weighted Average Number of Shares [Table Text Block]

	Three Months Ended March 31,
(in millions)	2013		2012
Weighted average shares outstanding - basic	1,351.9		1,445.2
Net effect of common stock equivalents	—	*	8.9
Weighted average shares outstanding - assuming dilution	1,351.9		1,454.1