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Goodwill - Changes in Carrying Amounts of Goodwill by Segment (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 5,372,562
Goodwill acquired from 2023 acquisitions	82,600
Purchase price allocation adjustments and other	25,400
Foreign currency translation adjustments	(1,600)
Goodwill, ending balance	5,479,025
Electronic Instruments Group
Goodwill [Roll Forward]
Goodwill, beginning balance	4,236,100
Goodwill acquired from 2023 acquisitions	57,100
Purchase price allocation adjustments and other	25,400
Foreign currency translation adjustments	(1,600)
Goodwill, ending balance	4,317,000
Electromechanical Group
Goodwill [Roll Forward]
Goodwill, beginning balance	1,136,500
Goodwill acquired from 2023 acquisitions	25,500
Purchase price allocation adjustments and other	0
Foreign currency translation adjustments	0
Goodwill, ending balance	$ 1,162,000

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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- Definition

Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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