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Goodwill - Summary of Key Assumptions Used in the Discounted Cash Flow Analyses (Detail)	9 Months Ended
	Sep. 30, 2024
Measurement Input Discount Rate
Goodwill [Line Items]
Revenue growth rates	10.00%
Minimum [Member]
Goodwill [Line Items]
Operating income margins	19.70%
Minimum [Member] | Measurement Input, Long-term Revenue Growth Rate [Member]
Goodwill [Line Items]
Revenue growth rates	(1.20%)
Maximum [Member]
Goodwill [Line Items]
Operating income margins	30.40%
Maximum [Member] | Measurement Input, Long-term Revenue Growth Rate [Member]
Goodwill [Line Items]
Revenue growth rates	1.80%
Philadelphia, PA Market Cluster | Goodwill [Member]
Goodwill [Line Items]
Operating income margins	27.90%
Philadelphia, PA Market Cluster | Goodwill [Member] | Measurement Input Discount Rate
Goodwill [Line Items]
Revenue growth rates	10.00%
Philadelphia, PA Market Cluster | Minimum [Member] | Goodwill [Member] | Measurement Input, Long-term Revenue Growth Rate [Member]
Goodwill [Line Items]
Revenue growth rates	(9.30%)
Philadelphia, PA Market Cluster | Maximum [Member] | Goodwill [Member] | Measurement Input, Long-term Revenue Growth Rate [Member]
Goodwill [Line Items]
Revenue growth rates	1.40%

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