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Notes Payable (Narrative) (Details) $ in Thousands |  |  | 12 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2022 USD ($) tranche | Apr. 23, 2021 USD ($) | Dec. 31, 2022 USD ($) tranche | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Aug. 15, 2022 USD ($) | Nov. 09, 2021 USD ($) | Sep. 09, 2021 EUR (€) | Jan. 19, 2021 USD ($) | Jan. 24, 2020 EUR (€) | Apr. 12, 2016 EUR (€) | Nov. 03, 2015 EUR (€)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total debt | $ 6,910,586 |  | $ 6,910,586 |  |  |  |  |  |  |  |  |
Foreign currency exchange gain (loss) |  |  | 98,314 | $ 111,787 | $ (97,953) |  |  |  |  |  |  |
Cash paid for interest expense |  |  | 133,800 | 77,700 | 52,700 |  |  |  |  |  |  |
Interest capitalized as real estate |  |  | $ 6,000 | 3,500 | 3,400 |  |  |  |  |  |  |
Mortgage Debt | Minimum |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate | 3.20% |  | 3.20% |  |  |  |  |  |  |  |  |
Mortgage Debt | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate | 7.10% |  | 7.10% |  |  |  |  |  |  |  |  |
U.S. Dollar Denominated Unsecured Debt |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total debt | $ 5,250,000 |  | $ 5,250,000 |  |  |  |  |  |  |  |  |
Debt to total assets ratio | 14.00% |  | 14.00% |  |  |  |  |  |  |  |  |
Adjusted EBTIDA to interest Expense ratio |  |  | 25 |  |  |  |  |  |  |  |  |
U.S. Dollar Denominated Unsecured Debt | Minimum |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Adjusted EBTIDA to interest Expense ratio |  |  | 1.5 |  |  |  |  |  |  |  |  |
U.S. Dollar Denominated Unsecured Debt | Notes due September 15, 2022 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  | 2.37% |  |  |  |  |  |
Total debt |  |  |  |  |  | $ 500,000 |  |  |  |  |  |
U.S. Dollar Denominated Unsecured Debt | Notes due February 15, 2026 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate | 0.875% |  | 0.875% |  |  |  |  |  | 0.875% |  |  |
Total debt | $ 500,000 |  | $ 500,000 |  |  |  |  |  |  |  |  |
Debt issuance amount |  |  |  |  |  |  |  |  | $ 500,000 |  |  |
Debt issuance costs |  |  |  |  |  |  |  |  | $ 3,800 |  |  |
U.S. Dollar Denominated Unsecured Debt | Notes Due April 23, 2024 May 1, 2028 And May 1, 2031 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issuance costs |  | $ 13,700 |  |  |  |  |  |  |  |  |  |
U.S. Dollar Denominated Unsecured Debt | Notes due April 23, 2024 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total debt | $ 700,000 |  | $ 700,000 |  |  |  |  |  |  |  |  |
Debt issuance amount |  | $ 700,000 |  |  |  |  |  |  |  |  |  |
Reset quarterly rate | 4.36% |  | 4.36% |  |  |  |  |  |  |  |  |
U.S. Dollar Denominated Unsecured Debt | Notes due April 23, 2024 | SOFR |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate spread | 0.47% | 0.47% |  |  |  |  |  |  |  |  |  |
U.S. Dollar Denominated Unsecured Debt | Notes due May 1, 2028 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate | 1.85% | 1.85% | 1.85% |  |  |  |  |  |  |  |  |
Total debt | $ 650,000 |  | $ 650,000 |  |  |  |  |  |  |  |  |
Debt issuance amount |  | $ 650,000 |  |  |  |  |  |  |  |  |  |
U.S. Dollar Denominated Unsecured Debt | Notes due May 1, 2031 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate | 2.30% | 2.30% | 2.30% |  |  |  |  |  |  |  |  |
Total debt | $ 650,000 |  | $ 650,000 |  |  |  |  |  |  |  |  |
Debt issuance amount |  | $ 650,000 |  |  |  |  |  |  |  |  |  |
U.S. Dollar Denominated Unsecured Debt | Notes Due November 9, 2026, November 9, 2028 and November 9, 2031 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issuance costs |  |  |  |  |  |  | $ 11,300 |  |  |  |  |
U.S. Dollar Denominated Unsecured Debt | Notes due November 9, 2026 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate | 1.50% |  | 1.50% |  |  |  | 1.50% |  |  |  |  |
Total debt | $ 650,000 |  | $ 650,000 |  |  |  |  |  |  |  |  |
Debt issuance amount |  |  |  |  |  |  | $ 650,000 |  |  |  |  |
U.S. Dollar Denominated Unsecured Debt | Notes due November 9, 2028 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate | 1.95% |  | 1.95% |  |  |  | 1.95% |  |  |  |  |
Total debt | $ 550,000 |  | $ 550,000 |  |  |  |  |  |  |  |  |
Debt issuance amount |  |  |  |  |  |  | $ 550,000 |  |  |  |  |
U.S. Dollar Denominated Unsecured Debt | Notes due November 9, 2031 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate | 2.25% |  | 2.25% |  |  |  | 2.25% |  |  |  |  |
Total debt | $ 550,000 |  | $ 550,000 |  |  |  |  |  |  |  |  |
Debt issuance amount |  |  |  |  |  |  | $ 550,000 |  |  |  |  |
U.S. Dollar Denominated Unsecured Debt | Maximum Covenant |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt to total assets ratio | 65.00% |  | 65.00% |  |  |  |  |  |  |  |  |
Euro Denominated Unsecured Debt |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total debt | $ 1,650,494 |  | $ 1,650,494 |  |  |  |  |  |  |  |  |
Number of tranches | tranche | 4 |  | 4 |  |  |  |  |  |  |  |  |
Foreign currency exchange gain (loss) |  |  | $ 99,200 | $ 111,800 | $ (98,000) |  |  |  |  |  |  |
Euro Denominated Unsecured Debt | Notes due November 3, 2025 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate | 2.175% |  | 2.175% |  |  |  |  |  |  |  |  |
Total debt | $ 259,039 |  | $ 259,039 |  |  |  |  |  |  |  |  |
Debt issuance amount | € |  |  |  |  |  |  |  |  |  |  |  | € 242,000,000
Euro Denominated Unsecured Debt | Notes due April 12, 2024 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate | 1.54% |  | 1.54% |  |  |  |  |  |  |  |  |
Total debt | $ 107,035 |  | $ 107,035 |  |  |  |  |  |  |  |  |
Debt issuance amount | € |  |  |  |  |  |  |  |  |  |  | € 100,000,000 |
Euro Denominated Unsecured Debt | Notes due January 24, 2032 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate | 0.875% |  | 0.875% |  |  |  |  |  |  |  |  |
Total debt | $ 535,175 |  | $ 535,175 |  |  |  |  |  |  |  |  |
Debt issuance amount | € |  |  |  |  |  |  |  |  |  | € 500,000,000 |  |
Euro Denominated Unsecured Debt | Notes due September 9, 2030 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate | 0.50% |  | 0.50% |  |  |  |  |  |  |  |  |
Total debt | $ 749,245 |  | $ 749,245 |  |  |  |  |  |  |  |  |
Debt issuance amount | € |  |  |  |  |  |  |  | € 700,000,000 |  |  |  |

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