v3.22.2.2

Unsecured Credit Agreements - Summary of Unsecured Credit Agreements (Parenthetical) (Detail) $ in Thousands, $ in Millions		9 Months Ended	12 Months Ended
		Sep. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)	Sep. 30, 2022 CAD ($)
Debt Instrument [Line Items]
Long-term Debt		$ 2,064,533
1 Month Secured Overnight
Debt Instrument [Line Items]
Interest rate		3.04%		3.04%
Unsecured Debt
Debt Instrument [Line Items]
Long-term Debt		$ 1,958,282	$ 1,592,472
Unsecured Debt | 1 Month LIBOR
Debt Instrument [Line Items]
Interest rate		3.14%	0.10%	3.14%
Basis spread on variable rate	[1]	1.00%
Unsecured Debt | 1 Month LIBOR | 2024 Unsecured Term Loan
Debt Instrument [Line Items]
Basis spread on variable rate	[1]	1.00%
Unsecured Debt | 1 Month LIBOR | 2026 Unsecured Term Loan
Debt Instrument [Line Items]
Basis spread on variable rate	[1]	1.00%
Unsecured Debt | 1 Month LIBOR | Revolving Credit Facilities
Debt Instrument [Line Items]
Basis spread on variable rate			1.00%
Unsecured Debt | 1 Month Canadian Dollar
Debt Instrument [Line Items]
Long-term Debt		$ 73,000		$ 100
Interest rate		3.76%		3.76%
Unsecured Debt | 1 Month Secured Overnight
Debt Instrument [Line Items]
Long-term Debt		$ 146,500
Interest rate		3.04%		3.04%
[1] At September 30, 2022 and December 31, 2021, one-month LIBOR was 3.14% and 0.10%, respectively.

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