Weighted Average Shares Outstanding (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Weighted average shares outstanding

	Year Ended December 31,
(in millions)	2019	2018	2017
Weighted average shares outstanding - basic	1,391.5	1,381.0	1,370.1
Net effect of common stock equivalents	19.0	20.4	22.6
Weighted average shares outstanding - assuming dilution	1,410.6	1,401.4	1,392.7