Segment Information - Schedule of Segment Reporting Information by Segment Revenue (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Revenue	$ 2,585.3	$ 2,405.4	$ 2,485.6
Operating income (loss)	$ 309.7	$ 258.9	$ 380.1
Operating margin	12.00%	10.80%	15.30%
Industrial Process
Segment Reporting Information [Line Items]
Revenue	$ 807.2	$ 830.1	$ 1,113.8
Operating income (loss)	$ 59.5	$ 33.5	$ 141.2
Operating margin	7.40%	4.00%	12.70%
Motion Technologies
Segment Reporting Information [Line Items]
Revenue	$ 1,176.0	$ 983.4	$ 767.2
Operating income (loss)	$ 190.0	$ 171.4	$ 126.4
Operating margin	16.20%	17.40%	16.50%
Connect & Control Technologies
Segment Reporting Information [Line Items]
Revenue	$ 605.6	$ 596.3	$ 609.3
Operating income (loss)	$ 66.7	$ 65.2	$ 54.6
Operating margin	11.00%	10.90%	9.00%
Total segment results
Segment Reporting Information [Line Items]
Revenue	$ 2,588.8	$ 2,409.8	$ 2,490.3
Operating income (loss)	$ 316.2	$ 270.1	$ 322.2
Operating margin	12.20%	11.20%	13.00%
Asbestos-related benefit, net
Segment Reporting Information [Line Items]
Operating income (loss)	$ 19.9	$ 25.6	$ 91.4
Eliminations / Other corporate costs
Segment Reporting Information [Line Items]
Revenue	(3.5)	(4.4)	(4.7)
Operating income (loss)	(26.4)	(36.8)	(33.5)
Total Eliminations / Corporate and Other costs
Segment Reporting Information [Line Items]
Revenue	(3.5)	(4.4)	(4.7)
Operating income (loss)	$ (6.5)	$ (11.2)	$ 57.9