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v3.20.4

Mortgages and Notes Payable (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) extension | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Jan. 29, 2021 USD ($)
Debt Instrument [Line Items] |  |  |  |
Mortgages and notes payable, net | $ 2,470,021,000 | $ 2,543,710,000 |  |
Less-unamortized debt issuance costs | (13,981,000) | (13,018,000) |  |
Scheduled future principal payments [Abstract] |  |  |  |
2021 | 150,504,000 |  |  |
2022 | 200,686,000 |  |  |
2023 | 251,024,000 |  |  |
2024 | 1,124,000 |  |  |
2025 | (185,000) |  |  |
Thereafter | 1,880,849,000 |  |  |
Less-unamortized debt issuance costs | (13,981,000) | (13,018,000) |  |
Mortgages and notes payable, net | 2,470,021,000 | 2,543,710,000 |  |
Gains/(losses) on debt extinguishment | $ (3,674,000) | (640,000) | $ 0 |
Lender covenant compliance to accelerate outstanding borrowings | 51.00% |  |  |
Cross-default minimum threshold | $ 30,000,000.0 |  |  |
Holders covenant compliance of bonds | 25.00% |  |  |
Uncured covenant compliance default period | 60 days |  |  |
Maximum liquidity requirements | 1 year |  |  |
Capitalized Interest [Abstract] |  |  |  |
Capitalized Interest | $ 8,300,000 | $ 5,600,000 | $ 6,700,000 |
3.20% (3.363% effective rate) Notes due 2021 [Member] |  |  |  |
Scheduled future principal payments [Abstract] |  |  |  |
Early repayment of debt | 150,000,000.0 |  |  |
Principal amount of debt | $ 150,000,000.0 |  |  |
Stated interest rate (in hundredths) | 3.20% |  |  |
Purchase price of debt (in hundredths) | 101.908% |  |  |
4.125% (4.271% effective rate) Notes due 2028 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Current interest rate (in hundredths) |  |  | 4.271% |
Scheduled future principal payments [Abstract] |  |  |  |
Principal amount of debt |  |  | $ 350,000,000.0 |
Original issuance discount |  |  | $ 4,100,000 |
Stated interest rate (in hundredths) |  |  | 4.125% |
Debt issuance costs |  |  | $ 2,900,000 |
4.20% (4.234% effective rate) Notes due 2029 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Current interest rate (in hundredths) |  | 4.234% |  |
Scheduled future principal payments [Abstract] |  |  |  |
Principal amount of debt |  | $ 350,000,000.0 |  |
Original issuance discount |  | $ 1,000,000.0 |  |
Stated interest rate (in hundredths) |  | 4.20% |  |
Debt issuance costs |  | $ 3,100,000 |  |
3.050% (3.079% effective rate) Notes due 2030 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Current interest rate (in hundredths) |  | 3.079% |  |
Scheduled future principal payments [Abstract] |  |  |  |
Principal amount of debt |  | $ 400,000,000.0 |  |
Original issuance discount |  | $ 1,000,000.0 |  |
Stated interest rate (in hundredths) |  | 3.05% |  |
Debt issuance costs |  | $ 3,400,000 |  |
2.600% (2.645% effective rate) Notes due 2031 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Current interest rate (in hundredths) | 2.645% |  |  |
Scheduled future principal payments [Abstract] |  |  |  |
Principal amount of debt | $ 400,000,000.0 |  |  |
Original issuance discount | $ 1,600,000 |  |  |
Stated interest rate (in hundredths) | 2.60% |  |  |
Debt issuance costs | $ 3,400,000 |  |  |
Variable Rate Term Loan due 2022 [Member] |  |  |  |
Scheduled future principal payments [Abstract] |  |  |  |
Early repayment of debt | $ 100,000,000.0 | 100,000,000.0 |  |
Principal amount of debt |  | 200,000,000.0 |  |
Interest rate, basis spread (in hundredths) | 1.10% |  |  |
Gains/(losses) on debt extinguishment |  | (300,000) |  |
Variable Rate Term Loan due 2022 [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |
Scheduled future principal payments [Abstract] |  |  |  |
Interest rate basis | LIBOR |  |  |
Revolving Credit Facility due 2022 [Member] |  |  |  |
Scheduled future principal payments [Abstract] |  |  |  |
Maximum borrowing capacity on revolving credit facility | $ 600,000,000.0 |  |  |
Additional borrowing capacity on revolving credit facility | $ 400,000,000.0 |  |  |
Number of additional maturity extensions | extension | 2 |  |  |
Term of optional extensions | 6 months |  |  |
Annual facility fee (in hundredths) | 0.20% |  |  |
Amount outstanding on revolving credit facility | $ 0 |  |  |
Outstanding letters of credit on revolving credit facility | 100,000 |  |  |
Unused borrowing capacity on revolving credit facility | $ 599,900,000 |  |  |
Interest rate, basis spread (in hundredths) | 1.00% |  |  |
Revolving Credit Facility due 2022 [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |
Scheduled future principal payments [Abstract] |  |  |  |
Interest rate | LIBOR |  |  |
Variable Rate Term Loan due 2020 [Member] |  |  |  |
Scheduled future principal payments [Abstract] |  |  |  |
Early repayment of debt |  | $ 225,000,000.0 |  |
Term of debt instrument (in years) |  | 7 years |  |
Interest rate, basis spread (in hundredths) |  | 1.10% |  |
Gains/(losses) on debt extinguishment |  | $ (400,000) |  |
Variable Rate Term Loan due 2020 [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |
Scheduled future principal payments [Abstract] |  |  |  |
Interest rate basis |  | LIBOR |  |
7.50% Notes due 2018 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Current interest rate (in hundredths) |  |  | 7.50% |
Scheduled future principal payments [Abstract] |  |  |  |
Principal amount of debt |  |  | $ 200,000,000.0 |
Secured indebtedness [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgages and notes payable, net | $ 93,350,000 | $ 95,303,000 |  |
Aggregate undepreciated book value of secured real estate assets | 147,900,000 |  |  |
Annual repayments through principal amortization | 2,000,000.0 |  |  |
Scheduled future principal payments [Abstract] |  |  |  |
Mortgages and notes payable, net | 93,350,000 | 95,303,000 |  |
Secured indebtedness [Member] | 4.0% Mortgage Loan Due 2029 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgages and notes payable, net | 93,350,000 | 95,303,000 |  |
Scheduled future principal payments [Abstract] |  |  |  |
Mortgages and notes payable, net | 93,350,000 | 95,303,000 |  |
Unsecured indebtedness [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgages and notes payable, net | 2,390,652,000 | 2,461,425,000 |  |
Scheduled future principal payments [Abstract] |  |  |  |
Mortgages and notes payable, net | 2,390,652,000 | 2,461,425,000 |  |
Unsecured indebtedness [Member] | 3.20% (3.363% effective rate) Notes due 2021 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgages and notes payable, net | 149,901,000 | 299,369,000 |  |
Unamortized discount | 100,000 | 600,000 |  |
Scheduled future principal payments [Abstract] |  |  |  |
Mortgages and notes payable, net | 149,901,000 | 299,369,000 |  |
Unsecured indebtedness [Member] | 3.625% (3.752% effective rate) Notes due 2023 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgages and notes payable, net | 249,464,000 | 249,201,000 |  |
Unamortized discount | 500,000 | 800,000 |  |
Scheduled future principal payments [Abstract] |  |  |  |
Mortgages and notes payable, net | 249,464,000 | 249,201,000 |  |
Unsecured indebtedness [Member] | 3.875% (4.038% effective rate) Notes due 2027 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgages and notes payable, net | 297,534,000 | 297,134,000 |  |
Unamortized discount | 2,500,000 | 2,900,000 |  |
Scheduled future principal payments [Abstract] |  |  |  |
Mortgages and notes payable, net | 297,534,000 | 297,134,000 |  |
Unsecured indebtedness [Member] | 4.125% (4.271% effective rate) Notes due 2028 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgages and notes payable, net | 347,035,000 | 346,621,000 |  |
Unamortized discount | 3,000,000.0 | 3,400,000 |  |
Scheduled future principal payments [Abstract] |  |  |  |
Mortgages and notes payable, net | 347,035,000 | 346,621,000 |  |
Unsecured indebtedness [Member] | 4.20% (4.234% effective rate) Notes due 2029 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgages and notes payable, net | 349,189,000 | 349,091,000 |  |
Unamortized discount | 800,000 | 900,000 |  |
Scheduled future principal payments [Abstract] |  |  |  |
Mortgages and notes payable, net | 349,189,000 | 349,091,000 |  |
Unsecured indebtedness [Member] | 3.050% (3.079% effective rate) Notes due 2030 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgages and notes payable, net | 399,106,000 | 399,009,000 |  |
Unamortized discount | 900,000 | 1,000,000.0 |  |
Scheduled future principal payments [Abstract] |  |  |  |
Mortgages and notes payable, net | 399,106,000 | 399,009,000 |  |
Unsecured indebtedness [Member] | 2.600% (2.645% effective rate) Notes due 2031 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgages and notes payable, net | 398,423,000 | 0 |  |
Unamortized discount | 1,600,000 |  |  |
Scheduled future principal payments [Abstract] |  |  |  |
Mortgages and notes payable, net | 398,423,000 | 0 |  |
Unsecured indebtedness [Member] | Variable Rate Term Loan due 2022 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgages and notes payable, net | 0 | 100,000,000 |  |
Scheduled future principal payments [Abstract] |  |  |  |
Mortgages and notes payable, net | 0 | 100,000,000 |  |
Unsecured indebtedness [Member] | Variable Rate Term Loan (2) due 2022 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgages and notes payable, net | $ 200,000,000 | 200,000,000 |  |
Interest rate under derivative instruments (in hundredths) | 2.79% |  |  |
Current interest rate (in hundredths) | 1.25% |  |  |
Scheduled future principal payments [Abstract] |  |  |  |
Mortgages and notes payable, net | $ 200,000,000 | 200,000,000 |  |
Unsecured indebtedness [Member] | Revolving Credit Facility due 2022 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgages and notes payable, net | 0 | 221,000,000 |  |
Scheduled future principal payments [Abstract] |  |  |  |
Mortgages and notes payable, net | $ 0 | $ 221,000,000 |  |
Subsequent Event [Member] | Revolving Credit Facility due 2022 [Member] |  |  |  |
Scheduled future principal payments [Abstract] |  |  |  |
Amount outstanding on revolving credit facility |  |  |  | $ 0
Outstanding letters of credit on revolving credit facility |  |  |  | 100,000
Unused borrowing capacity on revolving credit facility |  |  |  | $ 599,900,000

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- Definition The minimum amount of any indebtedness or guarantee for which if we fail to make a required payment that we would be in cross-default of our interest rate swaps. + References No definition available. + Details
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