SECURED AND UNSECURED DEBT, NET - Summary (Details) $ in Thousands	3 Months Ended
Mar. 31, 2024 USD ($) community	Dec. 31, 2023 USD ($)
Secured debt instruments
Total Debt, net	$ 5,762,328	$ 5,798,709
Long-term Debt	$ 5,772,722
Weighted average interest rate (as a percent)	3.38%
Weighted Average
Secured debt instruments
Years to maturity	5 years 4 months 24 days
Secured Debt
Secured debt instruments
Total Debt, net	$ 1,236,779	1,277,713
Long-term Debt	$ 1,240,019
Weighted average interest rate (as a percent)	3.44%
Number of Communities Encumbered \| community	21
Secured Debt \| Weighted Average
Secured debt instruments
Years to maturity	4 years 6 months
Unsecured Debt
Secured debt instruments
Total Debt, net	$ 4,525,549	4,520,996
Long-term Debt	$ 4,532,703
Weighted average interest rate (as a percent)	3.36%
Deferred finance costs, net	$ (20,011)	(20,682)
Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	5 years 8 months 12 days
Fixed Rate Debt \| Secured Debt
Secured debt instruments
Total Debt, net	$ 1,209,823	1,210,742
Long-term Debt	$ 1,213,019
Weighted average interest rate (as a percent)	3.42%
Number of Communities Encumbered \| community	20
Fixed Rate Debt \| Secured Debt \| Weighted Average
Secured debt instruments
Years to maturity	4 years 4 months 24 days
Variable Rate Debt \| Secured Debt
Secured debt instruments
Total Debt, net	$ 26,956	66,971
Long-term Debt	$ 27,000
Weighted average interest rate (as a percent)	4.08%
Number of Communities Encumbered \| community	1
Variable Rate Debt \| Secured Debt \| Weighted Average
Secured debt instruments
Years to maturity	8 years
Mortgages Notes Payable \| Fixed Rate Debt \| Secured Debt
Secured debt instruments
Deferred financing costs and other non-cash adjustments	$ 3,196	3,009
Long-term Debt	$ 1,213,019	1,213,751
Weighted average interest rate (as a percent)	3.48%
Number of Communities Encumbered \| community	20
Mortgages Notes Payable \| Fixed Rate Debt \| Secured Debt \| Weighted Average
Secured debt instruments
Years to maturity	4 years 4 months 24 days
Mortgages Notes Payable \| Variable Rate Debt
Secured debt instruments
Stated interest rate	8.31%
Mortgages Notes Payable \| Variable Rate Debt \| Secured Debt
Secured debt instruments
Long-term Debt		40,017
Tax-exempt notes payable \| Variable Rate Debt \| Secured Debt
Secured debt instruments
Long-term Debt	$ 27,000	27,000
Weighted average interest rate (as a percent)	4.05%
Number of Communities Encumbered \| community	1
Deferred finance costs, net	$ (44)	(46)
Tax-exempt notes payable \| Variable Rate Debt \| Secured Debt \| Weighted Average
Secured debt instruments
Years to maturity	8 years
Unsecured Revolving Credit Facility Due January 2026 \| Variable Rate Debt \| Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	1 year 9 months 18 days
Commercial Paper \| Variable Rate Debt \| Unsecured Debt
Secured debt instruments
Borrowings outstanding	$ 390,000	408,075
Weighted average interest rate (as a percent)	5.53%
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	$ 27,059	4,593
Weighted average interest rate (as a percent)	6.21%
Working capital credit facility \| Variable Rate Debt \| Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	9 months 18 days
Term Loan due January 2027 \| Fixed Rate Debt \| Unsecured Debt
Secured debt instruments
Long-term Debt	$ 262,500	350,000
Weighted average interest rate (as a percent)	2.68%
Term Loan due January 2027 \| Fixed Rate Debt \| Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	2 years 9 months 18 days
Term Loan due January 2027 \| Variable Rate Debt \| Unsecured Debt
Secured debt instruments
Long-term Debt	$ 87,500
Weighted average interest rate (as a percent)	6.24%
Term Loan due January 2027 \| Variable Rate Debt \| Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	2 years 9 months 18 days
8.50% Debentures, Due September 2024 \| Fixed Rate Debt \| Unsecured Debt
Secured debt instruments
Long-term Debt	$ 15,644	$ 15,644
Stated interest rate	8.50%	8.50%
Weighted average interest rate (as a percent)	8.50%
8.50% Debentures, Due September 2024 \| Fixed Rate Debt \| Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	6 months
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)	2.89%
2.95% Medium-Term Note due September 2026 \| Fixed Rate Debt \| Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	2 years 4 months 24 days
3.50 Medium-Term Note due July 2027 \| Fixed Rate Debt \| Unsecured Debt
Secured debt instruments
Total Debt, net	$ 299,771	$ 299,753
Stated interest rate	3.50%	3.50%
Unamortized discount	$ 229	$ 247
Weighted average interest rate (as a percent)	4.03%
3.50 Medium-Term Note due July 2027 \| Fixed Rate Debt \| Unsecured Debt \| Weighted Average
Secured debt instruments
Years to maturity	3 years 3 months 18 days
3.50% Medium-Term Notes Due January 2028 \| Fixed Rate Debt \| Unsecured Debt
Secured debt instruments
Total Debt, net	$ 299,550	$ 299,521
Stated interest rate	3.50%	3.50%
Unamortized discount	$ 450	$ 479
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	3 years 9 months 18 days
4.40% Medium-Term Notes due January 2029 \| Fixed Rate Debt \| Unsecured Debt
Secured debt instruments
Total Debt, net	$ 299,997	$ 299,997
Stated interest rate	4.40%	4.40%
Unamortized discount	$ 3	$ 3
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	4 years 9 months 18 days
3.20% Medium-Term Notes due January 2030 \| Fixed Rate Debt \| Unsecured Debt
Secured debt instruments
Total Debt, net	$ 607,951	$ 608,294
Stated interest rate	3.20%	3.20%
Unamortized net premium	$ 7,951	$ 8,294
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	5 years 9 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	$ 608,810	$ 609,109
Stated interest rate	3.00%	3.00%
Unamortized net premium	$ 8,810	$ 9,109
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	7 years 4 months 24 days
2.10% Medium Term Note Due August 2032 \| Fixed Rate Debt \| Unsecured Debt
Secured debt instruments
Total Debt, net	$ 399,706	399,697
Stated interest rate	2.10%
Unamortized discount	$ 294	303
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	8 years 3 months 18 days
1.90% Medium-Term Notes due March 2033 \| Fixed Rate Debt \| Unsecured Debt
Secured debt instruments
Total Debt, net	$ 348,921	$ 348,890
Stated interest rate	1.90%	1.90%
Unamortized discount	$ 1,079	$ 1,110
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	9 years
2.10% Medium-Term Note due June 2033 \| Fixed Rate Debt \| Unsecured Debt
Secured debt instruments
Total Debt, net	$ 299,084	$ 299,059
Stated interest rate	2.10%	2.10%
Unamortized discount	$ 916	$ 941
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	9 years 2 months 12 days
3.10% Medium-Term Notes due November 2034 \| Fixed Rate Debt \| Unsecured Debt
Secured debt instruments
Total Debt, net	$ 299,066	$ 299,044
Stated interest rate	3.10%	3.10%
Unamortized discount	$ 934	$ 956
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	10 years 7 months 6 days
Other [Member] \| Fixed Rate Debt \| Unsecured Debt
Secured debt instruments
Total Debt, net	$ 1	$ 2

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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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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