SECURED AND UNSECURED DEBT, NET - Summary (Details) $ in Thousands	9 Months Ended
Sep. 30, 2025 USD ($) community	Dec. 31, 2024 USD ($)
Secured debt instruments
Total Debt, net	$ 5,834,169	$ 5,826,965
Long-term Debt	$ 5,849,396
Weighted average interest rate (as a percent)	3.42%
Weighted Average
Secured debt instruments
Years to maturity	4 years 7 months 6 days
Secured Debt
Secured debt instruments
Total Debt, net	$ 1,090,305	1,139,331
Long-term Debt	$ 1,093,710
Weighted average interest rate (as a percent)	3.53%
Number of Communities Encumbered \| community	19
Secured Debt \| Weighted Average
Secured debt instruments
Years to maturity	3 years 6 months
Unsecured Debt
Secured debt instruments
Total Debt, net	$ 4,743,864	4,687,634
Long-term Debt	$ 4,755,686
Weighted average interest rate (as a percent)	3.39%
Deferred finance costs	$ (18,902)	(20,003)
Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	4 years 9 months 18 days
Fixed Rate Debt \| Secured Debt
Secured debt instruments
Total Debt, net	$ 1,063,350	1,112,369
Weighted average interest rate (as a percent)	3.54%
Number of Communities Encumbered \| community	18
Fixed Rate Debt \| Secured Debt \| Weighted Average
Secured debt instruments
Years to maturity	3 years 4 months 24 days
Variable Rate Debt \| Secured Debt
Secured debt instruments
Total Debt, net	$ 26,955	26,962
Weighted average interest rate (as a percent)	3.29%
Number of Communities Encumbered \| community	1
Variable Rate Debt \| Secured Debt \| Weighted Average
Secured debt instruments
Years to maturity	6 years 6 months
Mortgages loans \| Fixed Rate Debt \| Secured Debt
Secured debt instruments
Deferred financing costs and other non-cash adjustments	$ (3,360)	(3,429)
Long-term Debt	$ 1,066,710	1,115,798
Weighted average interest rate (as a percent)	3.48%
Number of Communities Encumbered \| community	18
Mortgages loans \| Fixed Rate Debt \| Secured Debt \| Weighted Average
Secured debt instruments
Years to maturity	3 years 4 months 24 days
Tax-exempt secured notes payable \| Variable Rate Debt \| Secured Debt
Secured debt instruments
Long-term Debt	$ 27,000	27,000
Weighted average interest rate (as a percent)	3.26%
Number of Communities Encumbered \| community	1
Deferred finance costs	$ (45)	(38)
Tax-exempt secured notes payable \| Variable Rate Debt \| Secured Debt \| Weighted Average
Secured debt instruments
Years to maturity	6 years 6 months
Borrowings outstanding under unsecured credit facility due August 2028 \| Variable Rate Debt \| Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	2 years 10 months 24 days
Commercial Paper \| Variable Rate Debt \| Unsecured Debt
Secured debt instruments
Borrowings outstanding	$ 340,000	289,900
Weighted average interest rate (as a percent)	4.32%
Commercial Paper \| Variable Rate Debt \| Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	1 month 6 days
Working Capital Credit Facility \| Variable Rate Debt \| Unsecured Debt
Secured debt instruments
Borrowings outstanding	$ 15,686	9,361
Weighted average interest rate (as a percent)	5.00%
Working Capital Credit Facility \| Variable Rate Debt \| Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	3 months 18 days
Term Loan due January 2029 \| Fixed Rate Debt \| Unsecured Debt
Secured debt instruments
Long-term Debt	$ 175,000	175,000
Weighted average interest rate (as a percent)	4.04%
Term Loan due January 2029 \| Fixed Rate Debt \| Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	3 years 3 months 18 days
Term Loan due January 2029 \| Variable Rate Debt \| Unsecured Debt
Secured debt instruments
Long-term Debt	$ 175,000	175,000
Weighted average interest rate (as a percent)	5.26%
Term Loan due January 2029 \| Variable Rate Debt \| Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	3 years 3 months 18 days
2.95% Medium-Term Note due September 2026 \| Fixed Rate Debt \| Unsecured Debt
Secured debt instruments
Long-term Debt	$ 300,000	$ 300,000
Stated interest rate	2.95%	2.95%
Weighted average interest rate (as a percent)	2.95%
2.95% Medium-Term Note due September 2026 \| Fixed Rate Debt \| Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	10 months 24 days
3.50 Medium-Term Note due July 2027 \| Fixed Rate Debt \| Unsecured Debt
Secured debt instruments
Total Debt, net	$ 299,877	$ 299,824
Stated interest rate	3.50%	3.50%
Unamortized discount	$ 123	$ 176
Weighted average interest rate (as a percent)	3.50%
3.50 Medium-Term Note due July 2027 \| Fixed Rate Debt \| Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	1 year 9 months 18 days
3.50% Medium-Term Notes Due January 2028 \| Fixed Rate Debt \| Unsecured Debt
Secured debt instruments
Total Debt, net	$ 299,728	$ 299,639
Stated interest rate	3.50%	3.50%
Unamortized discount	$ 272	$ 361
Weighted average interest rate (as a percent)	3.50%
3.50% Medium-Term Notes Due January 2028 \| Fixed Rate Debt \| Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	2 years 3 months 18 days
4.40% Medium-Term Notes due January 2029 \| Fixed Rate Debt \| Unsecured Debt
Secured debt instruments
Total Debt, net	$ 299,998	$ 299,998
Stated interest rate	4.40%	4.40%
Unamortized discount	$ 2	$ 2
Weighted average interest rate (as a percent)	4.27%
4.40% Medium-Term Notes due January 2029 \| Fixed Rate Debt \| Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	3 years 3 months 18 days
3.20% Medium-Term Notes due January 2030 \| Fixed Rate Debt \| Unsecured Debt
Secured debt instruments
Total Debt, net	$ 605,892	$ 606,921
Stated interest rate	3.20%	3.20%
Unamortized net premium	$ 5,892	$ 6,921
Weighted average interest rate (as a percent)	3.32%
3.20% Medium-Term Notes due January 2030 \| Fixed Rate Debt \| Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	4 years 3 months 18 days
3.00% Medium-Term Notes due August 2031
Secured debt instruments
Long-term Debt	$ 600,000
3.00% Medium-Term Notes due August 2031 \| Fixed Rate Debt \| Unsecured Debt
Secured debt instruments
Total Debt, net	$ 607,018	$ 607,914
Stated interest rate	3.00%	3.00%
Unamortized net premium	$ 7,018	$ 7,914
Weighted average interest rate (as a percent)	3.01%
3.00% Medium-Term Notes due August 2031 \| Fixed Rate Debt \| Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	5 years 10 months 24 days
2.10% Medium Term Note Due August 2032 \| Fixed Rate Debt \| Unsecured Debt
Secured debt instruments
Total Debt, net	$ 399,759	$ 399,733
Stated interest rate	2.10%	2.10%
Unamortized discount	$ 241	$ 267
Weighted average interest rate (as a percent)	2.10%
2.10% Medium Term Note Due August 2032 \| Fixed Rate Debt \| Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	6 years 9 months 18 days
1.90% Medium-Term Notes due March 2033 \| Fixed Rate Debt \| Unsecured Debt
Secured debt instruments
Total Debt, net	$ 349,102	$ 349,011
Stated interest rate	1.90%	1.90%
Unamortized discount	$ 898	$ 989
Weighted average interest rate (as a percent)	1.90%
1.90% Medium-Term Notes due March 2033 \| Fixed Rate Debt \| Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	7 years 6 months
2.10% Medium-Term Note due June 2033 \| Fixed Rate Debt \| Unsecured Debt
Secured debt instruments
Total Debt, net	$ 299,233	$ 299,158
Stated interest rate	2.10%	2.10%
Unamortized discount	$ 767	$ 842
Weighted average interest rate (as a percent)	2.10%
2.10% Medium-Term Note due June 2033 \| Fixed Rate Debt \| Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	7 years 8 months 12 days
5.125% Medium-Term Note due September 2034 \| Fixed Rate Debt \| Secured Debt
Secured debt instruments
Total Debt, net	$ 297,275	$ 297,046
Stated interest rate	5.125%	5.125%
Unamortized discount	$ 2,725	$ 2,954
Weighted average interest rate (as a percent)	4.95%
5.125% Medium-Term Note due September 2034 \| Fixed Rate Debt \| Secured Debt \| Weighted Average
Secured debt instruments
Years to maturity	8 years 10 months 24 days
3.10% Medium-Term Notes due November 2034 \| Fixed Rate Debt \| Unsecured Debt
Secured debt instruments
Total Debt, net	$ 299,198	$ 299,132
Stated interest rate	3.10%	3.10%
Unamortized discount	$ 802	$ 868
Weighted average interest rate (as a percent)	3.13%
3.10% Medium-Term Notes due November 2034 \| Fixed Rate Debt \| Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	9 years 1 month 6 days

Number of Communities Encumbered.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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- Definition

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

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount, after accumulated amortization, of debt discount.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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Amount, after accumulated amortization, of debt premium.

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Weighted average interest rate of debt outstanding.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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