Long-term debt - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Weighted average effective interest rate at quarter end	4.39%	4.39%
Weighted average effective interest rate during quarter	4.28%	3.78%
Percentage of debt instruments bearing fixed interest rate	50.00%	50.00%
Long Term Debt Percentage Bearing Economically Fixed Interest Rate	89.00%	89.00%
Revolving line of credit
Debt Instrument [Line Items]
Secured Debt	$ 275,000	$ 275,000	$ 0
Line of Credit Facility, Remaining Borrowing Capacity	725,000	725,000
Maximum borrowing capacity on the revolving credit facilities	1,000,000	1,000,000
Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding	0	0
Bilateral Secured Letter Of Credit Facility
Debt Instrument [Line Items]
Letters of credit outstanding	108,002	108,002
Term Loan A
Debt Instrument [Line Items]
Debt Instrument, Periodic Payment, Principal		65,625
Secured Debt Outstanding Principal Balance Subject To LIBOR	698,939	698,939
Secured Debt	1,531,250	1,531,250	1,596,875
Term Loan B-1
Debt Instrument [Line Items]
Debt Instrument, Periodic Payment, Principal		20,574
Secured Debt	$ 2,667,689	$ 2,667,689	$ 2,688,263
Senior Secured Credit Facilities
Debt Instrument [Line Items]
Weighted average effective interest rate at quarter end	4.34%	4.34%

Long Term Debt Percentage Bearing Economically Fixed Interest Rate.

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Secured Debt Outstanding Principal Balance Subject To LIBOR-based interest rate volatility.

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- Definition

The average effective interest rate during the reporting period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of the required periodic payments applied to principal.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

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Weighted average interest rate of long-term debt outstanding calculated at point in time.

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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