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Notes Payable - Unsecured Senior Notes (Details) - Unsecured Senior Notes $ in Millions | 3 Months Ended
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Mar. 31, 2021 USD ($) tranch
Debt Instrument [Line Items] |
Debt amount | $ 1,000
Number of tranches | tranch | 5
Minimum fixed charge coverage ratio | 1.50
Minimum |
Debt Instrument [Line Items] |
Minimum unencumbered interest coverage ratio | 1.75
Maximum |
Debt Instrument [Line Items] |
Secured leverage ratio | 40.00%
Leverage ratio | 60.00%
4.09% Senior Notes, Unsecured |
Debt Instrument [Line Items] |
Debt amount | $ 100
Interest rate | 4.09%
3.91% Senior Notes, Unsecured |
Debt Instrument [Line Items] |
Debt amount | $ 250
Interest rate | 3.91%
3.78% Senior Notes, Unsecured |
Debt Instrument [Line Items] |
Debt amount | $ 125
Interest rate | 3.78%
3.86% Senior Notes, Unsecured |
Debt Instrument [Line Items] |
Debt amount | $ 250
Interest rate | 3.86%
3.95% Senior Notes, Unsecured |
Debt Instrument [Line Items] |
Debt amount | $ 275
Interest rate | 3.95%

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