Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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- Definition

Amount of assets pledged to secure a debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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- Definition

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

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- Definition

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

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- Definition

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 next 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 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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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 remainder of current fiscal year.

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Line Of Credit Facility, Duration Of Successive Term

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No definition available.

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Line Of Credit Facility, Number Of Successive Terms

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Long Term Debt, Maturity, After Year Four

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No definition available.

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Senior Unsecured Notes and Secured Debt - Annual Principal Payments Due on Debt Obligations (Details)	6 Months Ended
	Jun. 30, 2022 USD ($) term	Jun. 30, 2022 CAD ($) term	Jun. 30, 2022 GBP (£) term	Dec. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)
Annual principal payments due
2022	$ 396,742,000
2023	498,668,000
2024	1,593,347,000
2025	1,491,488,000
2026	830,410,000
Thereafter	10,004,298,000
Totals	14,814,953,000
Senior unsecured notes
Annual principal payments due
2022	0
2023	0
2024	1,350,000,000
2025	1,260,000,000
2026	700,000,000
Thereafter	9,304,327,000
Totals	$ 12,614,327,000			$ 11,707,961,000	$ 11,252,985,000	$ 11,509,533,000
Senior unsecured notes \| Minimum
Annual principal payments due
Interest rate	1.82%	1.82%	1.82%
Senior unsecured notes \| Maximum
Annual principal payments due
Interest rate	6.50%	6.50%	6.50%
Senior unsecured notes \| Canadian-denominated unsecured term credit facility
Annual principal payments due
Face amount	$ 194,235,000	$ 250,000,000
Number of successive terms \| term	2	2	2
Successive term	6 months
Senior unsecured notes \| Canadian-denominated unsecured term credit facility \| SOFR
Annual principal payments due
Interest rate margin	0.85%
Senior unsecured notes \| Canadian-denominated unsecured term credit facility \| Canadian dealer offered rate
Annual principal payments due
Interest rate margin	0.85%
Effective rate	3.02%	3.02%	3.02%
Senior unsecured notes \| Unsecured term credit facility
Annual principal payments due
Face amount	$ 1,000,000,000
Senior unsecured notes \| Unsecured term credit facility \| SOFR
Annual principal payments due
Effective rate	2.23%	2.23%	2.23%
Senior unsecured notes \| 2.95% Senior unsecured notes due 2023
Annual principal payments due
Interest rate	2.95%	2.95%	2.95%
Face amount	$ 233,082,000	$ 300,000,000
Senior unsecured notes \| Senior unsecured notes due 2028
Annual principal payments due
Interest rate	4.80%	4.80%	4.80%
Face amount	$ 668,910,000		£ 550,000,000
Senior unsecured notes \| 4.50% Senior unsecured notes due 2034
Annual principal payments due
Interest rate	4.50%	4.50%	4.50%
Face amount	$ 608,100,000		£ 500,000,000
Secured debt
Annual principal payments due
2022	396,742,000
2023	498,668,000
2024	243,347,000
2025	231,488,000
2026	130,410,000
Thereafter	699,971,000
Totals	2,200,626,000			$ 2,202,312,000	$ 2,311,128,000	$ 2,378,073,000
Carrying values of properties securing the debt	$ 5,077,113,000
Secured debt \| Minimum
Annual principal payments due
Interest rate	0.82%	0.82%	0.82%
Secured debt \| Maximum
Annual principal payments due
Interest rate	6.67%	6.67%	6.67%