Earnings Attributable to Ecolab Per Common Share (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Attributable to Ecolab Per Common Share

Computations of the basic and diluted earnings attributable to Ecolab per share amounts

	First Quarter Ended
	March 31
(millions, except per share amounts)	2013		2012
Net income attributable to Ecolab	$	159.6	$	49.7
Weighted-average common shares outstanding
Basic	295.4		291.5
Effect of dilutive stock options, units and awards	5.5		6.4
Diluted	300.9		297.9
Earnings attributable to Ecolab per common share
Basic	$	0.54	$	0.17
Diluted	$	0.53	$	0.17
Anti-dilutive securities excluded from computation of earnings per share	2.7		3.3