Weighted Average Shares Outstanding (Tables)

6 Months Ended

Jun. 30, 2013

Earnings Per Share (Tables) [Abstract]

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

	Three Months Ended June 30,			Six Months Ended June 30,
(in millions)	2013	2012		2013		2012
Weighted average shares outstanding - basic	1,343.5	1,423.2		1,347.7		1,434.2
Net effect of common stock equivalents	15.1	—	**	—	*	—	**
Weighted average shares outstanding - assuming dilution	1,358.6	1,423.2		1,347.7		1,434.2