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Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Changes in the carrying amount of goodwill
Gross goodwill, beginning of the period	$ 882.9	$ 882.9	$ 838.6
Accumulated impairment, balance at the beginning of the period	(488.5)	(488.5)	(492.7)
Goodwill, balance at the beginning of the period	394.4	394.4	345.9
Goodwill from acquisitions		56.1	50.4
Goodwill impairments		0.0	0.0
Gross goodwill related to foreign currency translation and other		(2.8)	(6.1)
Accumulated impairments related to foreign currency translation and other		1.6	4.2
Goodwill related to foreign currency translation and other		(1.2)	(1.9)
Gross goodwill, end of the period		936.2	882.9
Accumulated impairment, balance at the end of the period		(486.9)	(488.5)
Goodwill, balance at the end of the period		449.3	394.4
HVAC reportable segment
Changes in the carrying amount of goodwill
Gross goodwill, beginning of the period	261.8	261.8	263.7
Accumulated impairment, balance at the beginning of the period	(144.4)	(144.4)	(144.7)
Goodwill, balance at the beginning of the period	117.4	117.4	119.0
Goodwill from acquisitions		15.7	0.0
Goodwill impairments		0.0	0.0
Gross goodwill related to foreign currency translation and other		(0.4)	(1.9)
Accumulated impairments related to foreign currency translation and other		(0.2)	0.3
Goodwill related to foreign currency translation and other		(0.6)	(1.6)
Gross goodwill, end of the period		277.1	261.8
Accumulated impairment, balance at the end of the period		(144.6)	(144.4)
Goodwill, balance at the end of the period		132.5	117.4
Detection and Measurement reportable segment
Changes in the carrying amount of goodwill
Gross goodwill, beginning of the period	265.0	265.0	216.6
Accumulated impairment, balance at the beginning of the period	(134.3)	(134.3)	(136.0)
Goodwill, balance at the beginning of the period	130.7	130.7	80.6
Goodwill from acquisitions		40.4	50.4
Goodwill impairments		0.0	0.0
Gross goodwill related to foreign currency translation and other		(1.3)	(2.0)
Accumulated impairments related to foreign currency translation and other		0.7	1.7
Goodwill related to foreign currency translation and other		(0.6)	(0.3)
Gross goodwill, end of the period		304.1	265.0
Accumulated impairment, balance at the end of the period		(133.6)	(134.3)
Goodwill, balance at the end of the period		170.5	130.7
Engineered Solutions reportable segment
Changes in the carrying amount of goodwill
Gross goodwill, beginning of the period	335.3	335.3	337.5
Accumulated impairment, balance at the beginning of the period	(189.0)	(189.0)	(191.2)
Goodwill, balance at the beginning of the period	146.3	146.3	146.3
Goodwill from acquisitions		0.0	0.0
Goodwill impairments		0.0	0.0
Gross goodwill related to foreign currency translation and other		(1.1)	(2.2)
Accumulated impairments related to foreign currency translation and other		1.1	2.2
Goodwill related to foreign currency translation and other		0.0	0.0
Gross goodwill, end of the period		334.2	335.3
Accumulated impairment, balance at the end of the period		(187.9)	(189.0)
Goodwill, balance at the end of the period		146.3	146.3
All Other
Changes in the carrying amount of goodwill
Gross goodwill, beginning of the period	20.8	20.8	20.8
Accumulated impairment, balance at the beginning of the period	(20.8)	(20.8)	(20.8)
Goodwill, balance at the beginning of the period	0.0	0.0	0.0
Goodwill from acquisitions		0.0	0.0
Goodwill impairments		0.0	0.0
Gross goodwill related to foreign currency translation and other		0.0	0.0
Accumulated impairments related to foreign currency translation and other		0.0	0.0
Goodwill related to foreign currency translation and other		0.0	0.0
Gross goodwill, end of the period		20.8	20.8
Accumulated impairment, balance at the end of the period		(20.8)	(20.8)
Goodwill, balance at the end of the period		0.0	0.0
Sabik Marine
Changes in the carrying amount of goodwill
Goodwill from acquisitions		41.2
SGS Refrigeration Inc.
Changes in the carrying amount of goodwill
Goodwill from acquisitions		1.9
Patterson-Kelley, LLC
Changes in the carrying amount of goodwill
Goodwill from acquisitions		13.8
Cues, Inc.
Changes in the carrying amount of goodwill
Goodwill from acquisitions			$ 48.6
Goodwill, balance at the end of the period		47.8
Goodwill, purchase accounting adjustment	$ 0.8
Schonstedt Instrument Company
Changes in the carrying amount of goodwill
Goodwill from acquisitions		$ 1.8

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