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Amount of assets pledged to secure a debt instrument.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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

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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Senior unsecured notes and secured debt.

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Senior Unsecured Notes and Secured Debt - Annual Principal Payments Due on Debt Obligations (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) term	Dec. 31, 2022 CAD ($) term	Dec. 31, 2022 GBP (£) term	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Principal payments due on debt obligations
2023	$ 627,672
2024	1,695,400
2025	1,527,117
2026	827,454
2027(5,6)	2,090,935
Thereafter	7,945,905
Totals	14,714,483
Senior Unsecured Notes
Principal payments due on debt obligations
2023	0
2024	1,350,000
2025	1,260,000
2026	700,000
2027(5,6)	1,906,444
Thereafter	7,368,085
Totals	$ 12,584,529			$ 11,707,961	$ 11,509,533	$ 10,427,562
Senior Unsecured Notes \| Minimum
Senior Unsecured Notes and Secured Debt Textual [Abstract]
Interest rate	2.05%	2.05%	2.05%
Senior Unsecured Notes \| Maximum
Senior Unsecured Notes and Secured Debt Textual [Abstract]
Interest rate	6.50%	6.50%	6.50%
Secured Debt
Principal payments due on debt obligations
2023	$ 627,672
2024	345,400
2025	267,117
2026	127,454
2027(5,6)	184,491
Thereafter	577,820
Totals	2,129,954			$ 2,202,312	$ 2,378,073	$ 2,993,342
Senior Unsecured Notes and Secured Debt Textual [Abstract]
Carrying value of properties securing the debt	$ 4,882,151
Secured Debt \| Minimum
Senior Unsecured Notes and Secured Debt Textual [Abstract]
Interest rate	1.25%	1.25%	1.25%
Secured Debt \| Maximum
Senior Unsecured Notes and Secured Debt Textual [Abstract]
Interest rate	7.00%	7.00%	7.00%
Unsecured term credit facility Matures July 19 2023 \| Senior Unsecured Notes
Senior Unsecured Notes and Secured Debt Textual [Abstract]
Face amount		$ 1,000,000,000
Term Loan \| Senior Unsecured Notes
Senior Unsecured Notes and Secured Debt Textual [Abstract]
Face amount	$ 184,747	$ 250,000,000
Number of successive terms \| term	2	2	2
Successive term	6 months
Term Loan \| SOFR \| Senior Unsecured Notes
Senior Unsecured Notes and Secured Debt Textual [Abstract]
Interest rate margin	0.85%
Effective rate	5.29%	5.29%	5.29%
Term Loan \| Canadian Dealer Offered Rate \| Senior Unsecured Notes
Senior Unsecured Notes and Secured Debt Textual [Abstract]
Interest rate margin	0.85%
Effective rate	5.56%	5.56%	5.56%
2.95% Senior Unsecured Notes Due 2027 \| Senior Unsecured Notes
Senior Unsecured Notes and Secured Debt Textual [Abstract]
Interest rate	2.95%	2.95%	2.95%
Face amount	$ 221,697	$ 300,000,000
UK Debt Due 2028 \| Senior Unsecured Notes
Senior Unsecured Notes and Secured Debt Textual [Abstract]
Interest rate	4.80%	4.80%	4.80%
Face amount	$ 664,235		£ 550,000,000
4.50% Senior Unsecured Notes Due 2034 \| Senior Unsecured Notes
Senior Unsecured Notes and Secured Debt Textual [Abstract]
Interest rate	4.50%	4.50%	4.50%
Face amount	$ 603,850		£ 500,000,000