Debt instrument discount interest rate percentage.

No definition available.

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- Definition

Debt instrument leverage ratio percentage.

+ References

No definition available.

+ Details

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- Definition

Debt instruments interest coverage ratio.

+ References

No definition available.

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- Definition

Indenture covenant percentage on unencumbered assets.

+ References

No definition available.

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- Definition

Amount of amortization expense attributable to debt issuance costs.

+ References

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Balance Type:	debit
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

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Balance Type:	credit
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- Definition

Description of the frequency of periodic payments (monthly, quarterly, annual).

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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- Definition

Amount, after accumulated amortization, of debt discount.

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Balance Type:	debit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Date the credit facility terminates, in YYYY-MM-DD format.

+ References

+ Details

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The effective interest rate at the end of the reporting period.

+ References

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- Definition

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.

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

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- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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Balance Type:	credit
Period Type:	duration

- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
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Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

+ References

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Period Type:	duration

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Unsecured Line of Credit and Term Notes - Additional Information (Detail) - USD ($)									3 Months Ended		6 Months Ended
	Jul. 13, 2022	Oct. 07, 2021	Sep. 23, 2020	Jun. 03, 2019	Dec. 07, 2017	Jul. 21, 2016	Jun. 20, 2016	Apr. 08, 2014	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Debt Instrument [Line Items]
Amount available on unsecured revolving line of credit									$ 196,900,000		$ 196,900,000
Unamortized senior term note discount									10,419,000		10,419,000		$ 11,154,000
Amortization expense related to deferred debt issuance costs											$ 2,654,000	$ 2,123,000
Maximum [Member]
Debt Instrument [Line Items]
Leverage ratio percentage											60.00%
Indenture covenant percentage on unencumbered assets											150.00%
Minimum [Member]
Debt Instrument [Line Items]
Interest coverage ratio on debt											1.5
Secured Debt [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Leverage ratio percentage											40.00%
Senior Term Note Due October 15, 2031 [Member] \| Unsecured Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument principal amount		$ 600,000,000
Debt instrument,maturity date		Oct. 15, 2031
Debt instrument stated interest rate		2.40%
Debt instrument percentage discount to par		0.917%
Debt instrument, interest payable description											Interest on the 2031 Senior Notes is payable semi-annually in arrears on each April 15 and October 15, commencing with April 15, 2022.
Unamortized senior term note discount		$ 5,500,000
Underwriting discount and other offering expenses		5,100,000
Proceeds from senior notes, net		$ 589,400,000
Senior Term Note Due October 15, 2030 [Member] \| Unsecured Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument principal amount			$ 400,000,000
Debt instrument,maturity date			Oct. 15, 2030
Debt instrument stated interest rate			2.20%
Debt instrument percentage discount to par			0.476%
Debt instrument, interest payable description											Interest on the 2030 Senior Notes is payable semi-annually in arrears on each April 15 and October 15.
Unamortized senior term note discount			$ 1,900,000
Underwriting discount and other offering expenses			3,500,000
Proceeds from senior notes, net			$ 394,600,000
Senior Term Note Due June 15, 2029 [Member] \| Unsecured Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument principal amount				$ 350,000,000
Debt instrument,maturity date				Jun. 15, 2029
Debt instrument stated interest rate				4.00%
Debt instrument percentage discount to par				0.524%
Debt instrument, interest payable description											Interest on the 2029 Senior Notes is payable semi-annually in arrears on each June 15 and December 15.
Unamortized senior term note discount				$ 1,800,000
Underwriting discount and other offering expenses				3,100,000
Proceeds from senior notes, net				$ 345,100,000
Senior Term Note Due December 15, 2027 [Member] \| Unsecured Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument principal amount					$ 450,000,000
Debt instrument,maturity date					Dec. 15, 2027
Debt instrument stated interest rate					3.875%
Debt instrument percentage discount to par					0.477%
Debt instrument, interest payable description											Interest on the 2027 Senior Notes is payable semi-annually in arrears on each June 15 and December 15.
Unamortized senior term note discount					$ 2,100,000
Underwriting discount and other offering expenses					4,000,000.0
Proceeds from senior notes, net					$ 443,900,000
Senior Term Note Due July 1, 2026 [Member] \| Unsecured Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument principal amount							$ 600,000,000
Debt instrument,maturity date							Jul. 01, 2026
Debt instrument stated interest rate							3.50%
Debt instrument percentage discount to par							0.553%
Debt instrument, interest payable description											Interest on the 2026 Senior Notes is payable semi-annually in arrears on each January 1 and July 1.
Unamortized senior term note discount							$ 3,300,000
Underwriting discount and other offering expenses							5,500,000
Proceeds from senior notes, net							$ 591,200,000
Term Note Due July 21, 2028 [Member]
Debt Instrument [Line Items]
Debt instrument,maturity date						Jul. 21, 2028
Debt instrument stated interest rate						3.67%
Additional secured term note						$ 200,000,000
Term Note Due April 8, 2024 [Member]
Debt Instrument [Line Items]
Debt instrument,maturity date								Apr. 08, 2024
Debt instrument stated interest rate								4.533%
Additional secured term note								$ 175,000,000
Term Note Due April 8, 2024 [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument stated interest rate								6.283%
Senior Notes and Term Notes [Member]
Debt Instrument [Line Items]
Amortization expense related to deferred debt issuance costs									700,000	$ 600,000	$ 1,500,000	$ 1,200,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit limit									$ 500,000,000		$ 500,000,000
Line of credit facility, expiration date											Mar. 10, 2023
Facility fee											0.15%
Interest rate, line of credit facility									2.58%		2.58%		1.05%
Revolving Credit Facility [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Revolving credit limit	$ 1,250,000,000
Line of credit facility, expiration date	Jan. 13, 2027
Basis spread over LIBOR	0.90%
Revolving Credit Facility [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Basis spread over LIBOR											0.95%
Revolving Credit Facility [Member] \| SOFR[Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Revolving credit limit	$ 2,000,000,000.0
Basis spread over LIBOR	0.10%