Long Term Debt - Summary of Company's Interest Rate Swap Agreements Designated as Cash Flow Hedges (Parenthetical) (Detail) $ in Millions	Sep. 30, 2023 USD ($)
Prepaid Expenses and Other
Debt Instrument [Line Items]
Estimated Fair Value	$ 14.5
Deferred Charges and Other Assets
Debt Instrument [Line Items]
Estimated Fair Value	$ 2.8