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Acquisitions - Estimated Useful Lives of Identifiable Intangibles (Detail) - PCM	12 Months Ended
	Dec. 31, 2021
Customer relationships | Minimum
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Economic Life	10 years
Customer relationships | Maximum
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Economic Life	12 years
Trade name
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Economic Life	1 year
Non-compete agreements | Minimum
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Economic Life	2 years
Non-compete agreements | Maximum
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Economic Life	3 years

X

- 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

No definition available.

+ Details

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Details

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