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Acquisitions - Allocation of Aggregate Purchase Price of Acquired Net Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Business Acquisition [Line Items]
Goodwill	$ 6,555,877	$ 6,447,629	$ 5,372,600
Purchases of businesses, net of cash acquired	117,514	$ 2,237,910	$ 429,714
Total
Business Acquisition [Line Items]
Goodwill	70,700
Other intangible assets	60,000
Deferred income taxes	(15,900)
Net working capital and other	2,700
Purchases of businesses, net of cash acquired	117,500
Accounts receivable included in purchase price	$ 6,600

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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date.

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Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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