Consolidated and Combined Statements of Operations and Comprehensive Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Statement [Abstract]
Net sales	$ 3,893.1	$ 3,006.1	$ 2,668.9
Cost of goods sold(1)	2,424.0	1,797.0	1,593.7
Gross profit	1,469.1	1,209.1	1,075.2
Selling, general and administrative	773.8	615.9	557.3
Research and development	78.5	66.1	55.2
Operating income	616.8	527.1	462.7
Net interest expense	75.0	106.0	79.4
Gain on sale of investment	0.0	0.0	(10.3)
Other expense (income)	(8.2)	(8.1)	18.3
Income before income taxes	550.0	429.2	375.3
Provision (benefit) for income taxes	121.5	188.4	(84.4)
Net income from continuing operations	428.5	240.8	459.7
Income from discontinued operations, net of tax	281.7	91.0	107.4
Net income	710.2	331.8	567.1
Comprehensive income, net of tax
Net income	710.2	331.8	567.1
Changes in cumulative translation adjustment (2025 includes $92.7 million reclassified to gain on sale included in Income from discontinued operations, net of tax)	126.9	(43.6)	10.5
Changes in market value of derivative financial instruments, net of tax	(13.7)	3.2	(14.9)
Comprehensive income attributable to nVent	$ 823.4	$ 291.4	$ 562.7
Basic
Discontinued operations (in dollars per share)	$ 1.73	$ 0.55	$ 0.64
Continuing operations (in dollars per share)	2.63	1.45	2.78
Basic (dollars per share)	4.36	2.00	3.42
Diluted
Continuing operations (in dollars per share)	2.60	1.43	2.73
Discontinued operations (in dollars per share)	1.71	0.54	0.64
Diluted (dollars per share)	$ 4.31	$ 1.97	$ 3.37
Weighted-average ordinary shares outstanding
Basic (shares)	162.4	165.5	165.6
Diluted (shares)	164.6	168.2	168.2