Business Combination ,Aggregate Earnout Obligation, Maximum

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Business Combination Aggregate Earnout Obligation Recorded Maximum

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Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]

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- Definition

Liabilities Recorded on Self-Insurance

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- Definition

Micro captive Insurance Companies Managed

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Number of employees.

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Number Of Letter Of Credit Issued

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Number of square feet.

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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.

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A credit or adjustment for government or taxing authority authorized decrease in taxes owed as a result of meeting certain tax policy conditions.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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

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Present value of the accrual for product liability loss contingencies as of the balance sheet date (if the accrual qualifies for discounting).

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

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

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Commitments, Contingencies and Off-Balance Sheet Arrangements - Additional Information (Detail)	3 Months Ended		6 Months Ended		222 Months Ended
	Jun. 30, 2020 USD ($) ft² Entity LetterOfCredit	Jun. 30, 2019 Entity	Jun. 30, 2020 USD ($) ft² Entity Employee LetterOfCredit Company	Jun. 30, 2019 Entity	Jun. 30, 2020 USD ($) ft² Entity LetterOfCredit
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Number of square feet \| ft²	360,000		360,000		360,000
Number of employees will accommodate at new facility \| Employee			2,000
Number of companies acquired \| Entity	44	46	102	68	568
Aggregate amount of maximum earnout obligations related to acquisitions			$ 1,060,700,000
Aggregate amount of maximum earnout obligations related to acquisitions, recorded in consolidated balance sheet			474,000,000.0
Income tax credits and adjustments			$ 108,000,000.0
Security Deposit [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Number of letters of credit issued \| LetterOfCredit	1		1		1
Collateral [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Number of letters of credit issued \| LetterOfCredit	1		1		1
Self-Insurance Deductibles [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Number of letters of credit issued \| LetterOfCredit	2		2		2
Rent-A-Captive Facility [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Number of letters of credit issued \| LetterOfCredit	7		7		7
Errors And Omissions [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Insurance claims, amount retained			$ 10,000,000.0
Amount of losses in excess of retained amounts	$ 350,000,000.0		350,000,000.0		$ 350,000,000.0
Letter of Credit [Member] \| Security Deposit [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Debt	500,000		500,000		500,000
Letter of Credit [Member] \| Collateral [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Debt	900,000		900,000		900,000
Letter of Credit [Member] \| Self-Insurance Deductibles [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Debt	9,400,000		9,400,000		9,400,000
Liabilities recorded on self-insurance	17,100,000		17,100,000		17,100,000
Letter of Credit [Member] \| Rent-A-Captive Facility [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Debt	$ 7,500,000		$ 7,500,000		$ 7,500,000
Minimum [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Ownership interest	1.00%		1.00%		1.00%
Number of micro-captive insurance companies organized or managed \| Company			100
Minimum [Member] \| Errors And Omissions [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Actuarial range value	$ 3,000,000.0		$ 3,000,000.0		$ 3,000,000.0
Maximum [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Ownership interest	50.00%		50.00%		50.00%
Maximum [Member] \| Errors And Omissions [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Actuarial range value	$ 5,800,000		$ 5,800,000		$ 5,800,000