Acquisitions and Divestitures - Allocation of Acquisition Costs to Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2023	Dec. 14, 2023	May 19, 2023	Dec. 31, 2022	Nov. 18, 2022	May 02, 2022	Feb. 28, 2022	Dec. 31, 2021	Jun. 14, 2021	Mar. 10, 2021
Business Acquisition [Line Items]
Goodwill	$ 2,838,300			$ 2,638,100				$ 2,167,700
Net assets acquired		$ 202,000
Iridian
Business Acquisition [Line Items]
Current assets, net of cash acquired			$ 10,600
Property, plant and equipment			19,900
Goodwill			52,700
Intangible assets			45,600
Other noncurrent assets			5,400
Total assets acquired			134,200
Current liabilities			(1,200)
Deferred income taxes			(18,300)
Other noncurrent liabilities			(4,900)
Net assets acquired			$ 109,800
Adjustment to purchase price	$ (500)
STC
Business Acquisition [Line Items]
Current assets, net of cash acquired		16,700
Property, plant and equipment		12,500
Goodwill		104,000
Intangible assets		95,300
Other noncurrent assets		3,100
Total assets acquired		231,600
Current liabilities		(5,400)
Deferred income taxes		(21,700)
Other noncurrent liabilities		$ (2,500)
Nexsight
Business Acquisition [Line Items]
Current assets, net of cash acquired							$ 16,600
Property, plant and equipment							2,000
Goodwill							54,700
Intangible assets							49,800
Other noncurrent assets							4,300
Total assets acquired							127,400
Current liabilities							(9,200)
Deferred income taxes							(1,900)
Other noncurrent liabilities							(3,800)
Net assets acquired							$ 112,500
KZValve
Business Acquisition [Line Items]
Current assets, net of cash acquired						$ 9,700
Property, plant and equipment						1,800
Goodwill						56,400
Intangible assets						52,000
Deferred income taxes						200
Other noncurrent assets						1,000
Total assets acquired						121,100
Current liabilities						(1,000)
Net assets acquired						$ 120,100
Muon Group
Business Acquisition [Line Items]
Current assets, net of cash acquired					$ 51,400
Property, plant and equipment					57,600
Goodwill					396,600
Intangible assets					319,100
Other noncurrent assets					9,600
Total assets acquired					834,300
Current liabilities					(26,800)
Deferred income taxes					(83,500)
Other noncurrent liabilities					(11,000)
Net assets acquired					$ 713,000
ABEL
Business Acquisition [Line Items]
Current assets, net of cash acquired										$ 18,100
Property, plant and equipment										4,000
Goodwill										42,700
Intangible assets										46,000
Deferred income taxes										2,600
Other noncurrent assets										100
Total assets acquired										113,500
Current liabilities										(7,100)
Other noncurrent liabilities										(100)
Net assets acquired										$ 106,300
Airtech
Business Acquisition [Line Items]
Current assets, net of cash acquired									$ 45,300
Property, plant and equipment									4,800
Goodwill									268,500
Intangible assets									202,300
Other noncurrent assets									10,200
Total assets acquired									531,100
Current liabilities									(11,800)
Deferred income taxes									(39,900)
Other noncurrent liabilities									(8,400)
Net assets acquired									$ 471,000