Weighted Average Shares Outstanding (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

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

	Three Months Ended March 31,
(in millions)	2018	2017
Weighted average shares outstanding - basic	1,376.5	1,365.4
Net effect of common stock equivalents	20.2	24.8
Weighted average shares outstanding - assuming dilution	1,396.8	1,390.2