Acquisitions - Consideration Transferred to Acquire Businesses and Assets Acquired, Liabilities Assumed Schedule (Detail) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) entity
Fair value of consideration transferred:
Cash	$ 2,010,274	$ 573,185
Debt assumed	83,589	73,397
Consideration transferred	2,093,863	646,582
Recognized amounts of identifiable assets acquired and liabilities assumed associated with businesses acquired:
Accounts receivable	90,892	15,412	$ 90,892
Prepaid expenses and other current assets	12,512	4,474	12,512
Restricted investments	0	5,462	0
Operating lease right-of-use assets	24,700	14,048	24,700
Property and equipment	1,038,803	186,130	1,038,803
Other assets	1,671	24	1,671
Accounts payable and accrued liabilities	(21,824)	(11,005)	(21,824)
Current portion of operating lease liabilities	(2,874)	(366)	(2,874)
Deferred revenue	(11,975)	(1,333)	(11,975)
Contingent consideration	(23,926)	(13,350)	(23,926)
Long-term portion of operating lease liabilities	(14,773)	(13,682)	(14,773)
Other long-term liabilities	(63,721)	(10,439)	(63,721)
Deferred income taxes	0	(3,501)	0
Total identifiable net assets	1,541,101	238,806	1,541,101
Goodwill	552,762	407,776
Goodwill expected to be deductible for tax purposes	552,762	317,190	$ 552,762
Number of individually immaterial acquisitions \| entity			5
Trade receivables acquired in business combination gross contractual amount	96,391	15,538	$ 96,391
Trade receivables acquired in business combination expected to be uncollectible amount	5,499	126	5,499
Long Term Franchise Agreements And Contracts
Recognized amounts of identifiable assets acquired and liabilities assumed associated with businesses acquired:
Intangibles	82,523	59,509	82,523
Customer Lists
Recognized amounts of identifiable assets acquired and liabilities assumed associated with businesses acquired:
Intangibles	143,404	5,020	143,404
Permits and Other
Recognized amounts of identifiable assets acquired and liabilities assumed associated with businesses acquired:
Intangibles	$ 285,689	$ 2,403	$ 285,689

The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the best estimate at the acquisition date of the contractual cash flows not expected to be collected, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables.

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For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the gross contractual amounts receivable, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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The amount of liability arising from an inherited contingency (as defined) which has been recognized as of the acquisition date.

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Amount of other assets expected to be realized or consumed before one year or the normal operating cycle, if longer, acquired at the acquisition date.

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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 revenue expected to be recognized as such within one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of other liabilities due within one year or within the normal operating cycle, if longer, assumed 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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The amount of identifiable intangible assets recognized as of the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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This element represents the number of acquisitions for which the initial accounting is incomplete.

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Amount of operating lease liabilities due within one year assumed at the acquisition date.

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Amount of operating lease liabilities due after one year assumed at the acquisition date.

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The amount of operating lease right-of-use assets recognized as of the acquisition date.

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Amount of restricted investments expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of net increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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