Business combination aggregate earnout obligation expected settlement in cash.

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- Definition

Business combination aggregate earnout obligation expected settlement in cash or stock at option.

+ References

No definition available.

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- Definition

Business Combination ,Aggregate Earnout Obligation, Maximum

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No definition available.

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- Definition

Business Combination Aggregate Earnout Obligation Recorded Maximum

+ References

No definition available.

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- Definition

Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]

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No definition available.

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- Definition

Liabilities Recorded on Self-Insurance

+ References

No definition available.

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- Definition

Number Of Letter Of Credit Issued

+ References

No definition available.

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- Definition

Number of square feet.

+ References

No definition available.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Present value of the estimated aggregate accrual for damages arising from third-party use of the entity's product(s) or process(es) as of the balance sheet date (if the accrual qualifies for discounting).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The number of businesses acquired by the entity during the period.

+ References

No definition available.

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- Definition

Amount of insurance benefit, claim, loss and settlement expenses incurred, as disclosed in supplementary insurance information.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount of claim and benefit payable classified as other, disclosed in supplementary insurance information.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Commitments, Contingencies and Off-Balance Sheet Arrangements - Additional Information (Detail)	3 Months Ended		279 Months Ended
	Mar. 31, 2025 USD ($) ft² Entity LetterOfCredit	Mar. 31, 2024 USD ($) Entity	Mar. 31, 2025 USD ($) ft² Entity LetterOfCredit
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Number of square feet \| ft²	360,000		360,000
Number of companies acquired \| Entity	28	37	761
Aggregate amount of maximum earnout obligations related to acquisitions	$ 2,154,000,000
Aggregate amount of maximum earnout obligations related to acquisitions, recorded in consolidated balance sheet	1,368,000,000
Aggregate amount of earnout obligation expected settlement in cash or stock at option	576,300,000		$ 576,300,000
Aggregate amount of earnout obligation expected settlement in cash	$ 791,700,000		$ 791,700,000
Collateral [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Number of letters of credit issued \| LetterOfCredit	1		1
Self-Insurance Deductibles [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Number of letters of credit issued \| LetterOfCredit	1		1
Rent-A-Captive Facility [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Number of letters of credit issued \| LetterOfCredit	8		8
Errors And Omissions [Member] \| Up to $4.5 Million [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Insurance claims, amount retained	$ 2,000,000.0
Errors And Omissions [Member] \| Up to $10 Million [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Insurance claims, amount retained	15,000,000.0
Errors And Omissions [Member] \| Up to $20.0 Million [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Insurance claims, amount retained	10,000,000.0
Errors And Omissions [Member] \| Up to $27.0 Million [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Insurance claims, amount retained	20,000,000.0
Letter of Credit [Member] \| Security Deposit [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Debt	800,000		$ 800,000
Letter of Credit [Member] \| Self-Insurance Deductibles [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Debt	400,000		400,000
Liabilities recorded on self-insurance		$ 11,300,000
Letter of Credit [Member] \| Rent-A-Captive Facility [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Debt	13,000,000		13,000,000
Minimum [Member] \| Errors And Omissions [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Loss Contingency Accrual, Product Liability, Net, Total	6,900,000		6,900,000
Minimum [Member] \| Errors And Omissions [Member] \| Up to $4.5 Million [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Insurance claim arise during ordinary course of business	15,000,000.0		15,000,000.0
Minimum [Member] \| Errors And Omissions [Member] \| Up to $20.0 Million [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Insurance claim arise during ordinary course of business	100,000,000.0		100,000,000.0
Minimum [Member] \| Errors And Omissions [Member] \| Up to $27.0 Million [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Insurance claim arise during ordinary course of business	225,000,000.0		225,000,000.0
Maximum [Member] \| Errors And Omissions [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Loss Contingency Accrual, Product Liability, Net, Total	8,200,000		8,200,000
Maximum [Member] \| Errors And Omissions [Member] \| Up to $4.5 Million [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Insurance claim arise during ordinary course of business	100,000,000.0		100,000,000.0
Maximum [Member] \| Errors And Omissions [Member] \| Up to $20.0 Million [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Insurance claim arise during ordinary course of business	225,000,000.0		225,000,000.0
Maximum [Member] \| Errors And Omissions [Member] \| Up to $27.0 Million [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Insurance claim arise during ordinary course of business	$ 400,000,000.0		$ 400,000,000.0
Unconsolidated Investments in Enterprises [Member] \| Minimum [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Ownership interest	1.00%		1.00%
Unconsolidated Investments in Enterprises [Member] \| Maximum [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Ownership interest	50.00%		50.00%