Fair Value of Assets and Liabilities - Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Fair Value of Financial Instruments
Senior notes	$ 2,189,776	$ 2,187,875
Mortgage notes payable	$ 49,968	49,917
4.25% Senior Unsecured Notes Due 2024
Fair Value of Financial Instruments
Interest rate (as a percent)	4.25%
4.50% Senior Unsecured Notes Due 2025
Fair Value of Financial Instruments
Interest rate (as a percent)	4.50%
2.650% Senior Unsecured Notes Due 2026
Fair Value of Financial Instruments
Interest rate (as a percent)	2.65%
2.400% Senior Unsecured Notes Due 2027
Fair Value of Financial Instruments
Interest rate (as a percent)	2.40%
3.450% Senior Unsecured Notes Due 2031
Fair Value of Financial Instruments
Interest rate (as a percent)	3.45%
6.375% Senior Unsecured Notes Due 2050
Fair Value of Financial Instruments
Interest rate (as a percent)	6.375%
Senior Notes And Mortgages
Fair Value of Financial Instruments
Unamortized debt premiums, discounts and issuance costs	$ 22,256	24,208
Carrying Value
Fair Value of Financial Instruments
Fair value of financial instruments	2,239,744	2,237,792
Carrying Value \| 4.25% Senior Unsecured Notes Due 2024
Fair Value of Financial Instruments
Senior notes	347,433	346,863
Carrying Value \| 4.50% Senior Unsecured Notes Due 2025
Fair Value of Financial Instruments
Senior notes	643,680	642,818
Carrying Value \| 2.650% Senior Unsecured Notes Due 2026
Fair Value of Financial Instruments
Senior notes	297,995	297,839
Carrying Value \| 2.400% Senior Unsecured Notes Due 2027
Fair Value of Financial Instruments
Senior notes	347,621	347,466
Carrying Value \| 3.450% Senior Unsecured Notes Due 2031
Fair Value of Financial Instruments
Senior notes	396,287	396,178
Carrying Value \| 6.375% Senior Unsecured Notes Due 2050
Fair Value of Financial Instruments
Senior notes	156,760	156,711
Carrying Value \| Mortgages
Fair Value of Financial Instruments
Mortgage notes payable	49,968	49,917
Fair Value
Fair Value of Financial Instruments
Fair value of financial instruments	1,702,790	1,840,543
Fair Value \| 4.25% Senior Unsecured Notes Due 2024
Fair Value of Financial Instruments
Senior notes	326,214	331,601
Fair Value \| 4.50% Senior Unsecured Notes Due 2025
Fair Value of Financial Instruments
Senior notes	560,885	589,388
Fair Value \| 2.650% Senior Unsecured Notes Due 2026
Fair Value of Financial Instruments
Senior notes	202,875	232,770
Fair Value \| 2.400% Senior Unsecured Notes Due 2027
Fair Value of Financial Instruments
Senior notes	228,785	256,606
Fair Value \| 3.450% Senior Unsecured Notes Due 2031
Fair Value of Financial Instruments
Senior notes	223,860	268,004
Fair Value \| 6.375% Senior Unsecured Notes Due 2050
Fair Value of Financial Instruments
Senior notes	110,614	113,075
Fair Value \| Mortgages
Fair Value of Financial Instruments
Mortgage notes payable	$ 49,557	$ 49,099

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

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- Definition

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

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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.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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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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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

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