Consolidated Statements Of Operations And Comprehensive Income (Loss) - USD ($) shares in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Income Statement [Abstract]
Net sales	[1]	$ 2,965.1		$ 2,845.7		$ 2,780.6
Cost of goods sold		1,917.4		1,858.2		1,821.5
Gross profit		1,047.7		987.5		959.1
Selling, general and administrative		534.3		536.0		531.4
Research and development		76.7		73.2		73.3
Operating income		436.7		378.3		354.4
Other (income) expense
Loss on sale of businesses		7.3		4.2		3.9
Loss on early extinguishment of debt		17.1		101.4		0.0
Net interest expense		32.6		87.3		140.1
Other Income		(0.1)				(10.5)
Other expense				12.6
Income from continuing operations before income taxes		379.8		172.8		220.9
Provision for income taxes		58.1		58.7		42.7
Net income from continuing operations		321.7		114.1		178.2
Income from discontinued operations, net of tax		25.7		371.3		343.4
Income (loss) from discontinued operations, net of tax		25.7		371.3		343.4
Gain from sale / impairment of discontinued operations, net of tax		0.0		181.1		0.6
Net income		347.4		666.5		522.2
Comprehensive income, net of tax
Net income		347.4		666.5		522.2
Changes in cumulative translation adjustment (inclusive of divestiture of business reclassified to gain from sale of $374.2 for the year ended December 31, 2017)		10.0		497.5		(83.0)
Changes in market value of derivative financial instruments, net of tax		4.8		(4.6)		(8.3)
Comprehensive income		$ 362.2		$ 1,159.4		$ 430.9
Earnings per ordinary share
Continuing operations (USD per share)		$ 1.83		$ 0.63		$ 0.98
Discontinued operations (USD per share)		0.15		3.04		1.90
Basic earnings per ordinary share (USD per share)		1.98	[2]	3.67	[3]	2.88
Continuing operations (USD per share)		1.81		0.62		0.97
Discontinued operations (USD per share)		0.15		3.01		1.88
Diluted earnings per ordinary share (USD per share)		$ 1.96	[2]	$ 3.63	[3]	$ 2.85
Weighted average ordinary shares outstanding
Basic (shares)		175.8		181.7		181.3
Diluted (shares)		177.3		183.7		183.1

[1] (1) One customer in the Aquatic Systems segment, Pool Corporation, represented approximately 15% of our consolidated net sales in 2018, 2017 and 2016.

[2] (2) Amounts may not total to annual earnings because each quarter and year are calculated separately based on basic and diluted weighted-average ordinary shares outstanding during that period.

[3] (3) Amounts may not total to annual earnings because each quarter and year are calculated separately based on basic and diluted weighted-average ordinary shares outstanding during that period.