Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating activities
Net income	$ 358.6	$ 355.7	$ 347.4
(Income) loss from discontinued operations, net of tax	(1.5)	6.0	(25.7)
Adjustments to reconcile net income from continuing operations to net cash provided by operating activities of continuing operations
Equity income of unconsolidated subsidiaries	(1.4)	(3.5)	(8.4)
Depreciation	46.7	48.3	49.7
Amortization	28.4	31.7	34.9
Loss (gain) on sale of businesses	0.1	(2.2)	7.3
Deferred income taxes	4.6	(18.4)	(4.1)
Share-based compensation	20.3	21.4	20.9
Asset impairment	0.0	21.2	12.0
Loss on early extinguishment of debt	0.0	0.0	17.1
Pension and other post-retirement expense	12.2	1.9	13.2
Pension and other post-retirement contributions	(8.4)	(20.9)	(8.9)
Changes in assets and liabilities, net of effects of business acquisitions
Accounts receivable	148.3	(17.5)	(15.3)
Inventories	(29.1)	13.6	(40.1)
Other current assets	(2.3)	(18.4)	31.2
Accounts payable	(81.9)	(63.6)	58.3
Employee compensation and benefits	42.5	(19.1)	(0.6)
Other current liabilities	32.0	(0.4)	(3.3)
Other non-current assets and liabilities	5.1	9.4	(27.5)
Net cash provided by operating activities of continuing operations	574.2	345.2	458.1
Net cash (used for) provided by operating activities of discontinued operations	(0.6)	7.8	(19.0)
Net cash provided by operating activities of continuing operations	573.6	353.0	439.1
Investing activities
Capital expenditures	(62.2)	(58.5)	(48.2)
Proceeds from sale of property and equipment	0.1	0.6	0.2
Proceeds from (payments due to) sale of businesses	0.0	15.3	(12.8)
Acquisitions, net of cash acquired	(58.0)	(287.8)	(0.9)
Other	2.2	(1.5)	0.0
Net cash used for investing activities of continuing operations	(117.9)	(331.9)	(61.7)
Net cash used for investing activities of discontinued operations	0.0	0.0	(7.1)
Net cash used for investing activities	(117.9)	(331.9)	(68.8)
Financing activities
Net (repayments) receipts of commercial paper and revolving long-term debt	(117.5)	51.5	39.7
Proceeds from long-term debt	0.0	600.0	0.0
Repayment of long-term debt	(74.0)	(401.5)	(675.1)
Premium paid on early extinguishment of debt	0.0	0.0	(16.0)
Distribution of cash from nVent, net of cash transferred	0.0	0.0	919.4
Shares issued to employees, net of shares withheld	32.9	12.5	13.3
Repurchases of ordinary shares	(150.2)	(150.0)	(500.0)
Dividends paid	(127.1)	(122.7)	(187.2)
Other	0.0	6.9	2.0
Net cash provided by (used for) financing activities of continuing operations	(435.9)	(17.1)	(407.9)
Change in cash held for sale	0.0	0.0	27.0
Effect of exchange rate changes on cash and cash equivalents	(20.2)	4.2	(1.4)
Change in cash and cash equivalents	(0.4)	8.2	(12.0)
Cash and cash equivalents, beginning of year	82.5	74.3	86.3
Cash and cash equivalents, end of year	82.1	82.5	74.3
Supplemental disclosure of cash flow information:
Cash paid for interest, net	41.0	33.7	43.7
Cash paid for income taxes, net	$ 67.7	$ 59.0	$ 92.9