CONSOLIDATED STATEMENT OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
CONSOLIDATED STATEMENT OF INCOME
Net sales	$ 3,462.7	$ 3,317.2	$ 6,624.3	$ 6,414.6
Cost of sales (including special charges of (a))	1,871.6	1,785.2	3,563.1	3,416.6
Selling, general and administrative expenses	1,115.3	1,093.3	2,205.9	2,181.5
Special (gains) and charges	36.8	26.2	43.0	32.5
Operating income	439.0	412.5	812.3	784.0
Interest expense, net	59.6	65.3	122.1	131.4
Income before income taxes	379.4	347.2	690.2	652.6
Provision for income taxes	81.3	83.6	135.3	157.0
Net income including noncontrolling interest	298.1	263.6	554.9	495.6
Net income attributable to noncontrolling interest (including special charges (a))	1.5	5.2	4.8	6.4
Net income attributable to Ecolab	$ 296.6	$ 258.4	$ 550.1	$ 489.2
Earnings attributable to Ecolab per common share
Basic (in dollars per share)	$ 1.02	$ 0.88	$ 1.90	$ 1.67
Diluted (in dollars per share)	1.01	0.87	1.87	1.64
Dividends declared per common share (in dollars per share)	$ 0.370	$ 0.350	$ 0.740	$ 0.700
Weighted-average common shares outstanding
Basic (in shares)	289.8	292.4	290.2	293.4
Diluted (in shares)	294.1	296.5	294.6	297.5