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Acquisitions - Estimated Fair Values of Identifiable Intangible Assets and Related Weighted Average Amortization (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2024
Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value		$ 947,000
CEI
Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 656,000
Amortization Period in Years	9 years 2 months 12 days
CEI | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 396,000
Amortization Period in Years	8 years
CEI | Backlog
Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 90,000
Amortization Period in Years	3 years 3 months 18 days
CEI | Trade names
Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 170,000
Amortization Period in Years	15 years
CEI | Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 0
CEI | Patented rights, developed technology, process certifications and other
Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	0
All Others
Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 213,573
Amortization Period in Years	7 years 4 months 24 days
All Others | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 167,486
Amortization Period in Years	7 years
All Others | Backlog
Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 20,125
Amortization Period in Years	2 years 9 months 18 days
All Others | Trade names
Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 20,242
Amortization Period in Years	14 years 10 months 24 days
All Others | Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 3,444
Amortization Period in Years	5 years
All Others | Patented rights, developed technology, process certifications and other
Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 2,276
Amortization Period in Years	15 years

X

- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482665/350-30-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 985
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481283/985-20-50-2

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 350
-SubTopic 30
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-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482640/350-30-55-40

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147482665/350-30-50-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 985
-SubTopic 20
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-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481283/985-20-50-2

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483154/926-20-50-5

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

+ References

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