Business Acquisitions - Weighted Average Useful Lives for Acquired Identifiable Intangible Assets (Details)	9 Months Ended
	Sep. 30, 2022
Customer Relationships | EnvStd
Business Acquisition [Line Items]
Weighted average useful lives for acquired intangible assets	7 years
Customer Relationships | MSE Group | Minimum
Business Acquisition [Line Items]
Weighted average useful lives for acquired intangible assets	2 years
Customer Relationships | MSE Group | Maximum
Business Acquisition [Line Items]
Weighted average useful lives for acquired intangible assets	7 years
Customer Relationships | EI
Business Acquisition [Line Items]
Weighted average useful lives for acquired intangible assets	10 years
Customer Relationships | All Other 2021 Acquisitions
Business Acquisition [Line Items]
Weighted average useful lives for acquired intangible assets	10 years
Customer Relationships | All Other 2022 Acquisitions
Business Acquisition [Line Items]
Weighted average useful lives for acquired intangible assets	7 years
Trade Names | EnvStd
Business Acquisition [Line Items]
Weighted average useful lives for acquired intangible assets	2 years
Trade Names | MSE Group
Business Acquisition [Line Items]
Weighted average useful lives for acquired intangible assets	2 years
Trade Names | EI
Business Acquisition [Line Items]
Weighted average useful lives for acquired intangible assets	5 years
Trade Names | All Other 2021 Acquisitions
Business Acquisition [Line Items]
Weighted average useful lives for acquired intangible assets	3 years
Trade Names | All Other 2022 Acquisitions
Business Acquisition [Line Items]
Weighted average useful lives for acquired intangible assets	2 years
Covenants Not to Compete | EnvStd
Business Acquisition [Line Items]
Weighted average useful lives for acquired intangible assets	5 years
Covenants Not to Compete | MSE Group
Business Acquisition [Line Items]
Weighted average useful lives for acquired intangible assets	5 years
Covenants Not to Compete | EI
Business Acquisition [Line Items]
Weighted average useful lives for acquired intangible assets	5 years
Covenants Not to Compete | All Other 2021 Acquisitions
Business Acquisition [Line Items]
Weighted average useful lives for acquired intangible assets	5 years
Covenants Not to Compete | All Other 2022 Acquisitions
Business Acquisition [Line Items]
Weighted average useful lives for acquired intangible assets	5 years
Developed Technology | All Other 2021 Acquisitions
Business Acquisition [Line Items]
Weighted average useful lives for acquired intangible assets	5 years