This element represents weighted average maturity of debt.

No definition available.

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- Definition

The portion of the outstanding balance of the line of credit that is denominated in a foreign currency.

+ References

No definition available.

+ Details

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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Period Type:	instant

- Definition

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

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Amount, after accumulated amortization, of debt discount (premium).

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Balance Type:	debit
Period Type:	instant

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

The carrying amount as of the balance sheet date for the aggregate of other miscellaneous borrowings owed by the reporting entity.

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Debt - Schedule of Debt Maturities (Details) $ in Thousands, £ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2018 GBP (£)	Dec. 31, 2017 USD ($)
Debt Instrument [Line Items]
Long-term debt, gross	$ 5,513,437
(Discounts), premiums and debt costs, net	(36,314)
Long-term debt	5,477,123
Other debt	90,785		$ 94,165
Debt maturing in 2019
Debt Instrument [Line Items]
2019	3,561
Debt maturing in 2020
Debt Instrument [Line Items]
2020	803,609
Debt maturing in 2021
Debt Instrument [Line Items]
2021	91,060
Debt maturing in 2022
Debt Instrument [Line Items]
2022	902,691
Debt maturing in 2023
Debt Instrument [Line Items]
2023	802,811
Thereafter
Debt Instrument [Line Items]
Thereafter	2,909,705
Bank Line of Credit
Debt Instrument [Line Items]
Long-term debt, gross	80,103
(Discounts), premiums and debt costs, net	0
Long-term debt	$ 80,103
Line of credit \| £		£ 55
Weighted-average interest rate (as a percent)	2.12%	2.12%
Bank Line of Credit \| Debt maturing in 2019
Debt Instrument [Line Items]
2019	$ 0
Bank Line of Credit \| Debt maturing in 2020
Debt Instrument [Line Items]
2020	0
Bank Line of Credit \| Debt maturing in 2021
Debt Instrument [Line Items]
2021	80,103
Bank Line of Credit \| Debt maturing in 2022
Debt Instrument [Line Items]
2022	0
Bank Line of Credit \| Debt maturing in 2023
Debt Instrument [Line Items]
2023	0
Bank Line of Credit \| Thereafter
Debt Instrument [Line Items]
Thereafter	$ 0
Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)
Long-term debt, gross	$ 5,300,000
(Discounts), premiums and debt costs, net	(41,450)
Long-term debt	$ 5,258,550
Weighted-average interest rate (as a percent)	4.03%	4.03%
Weighted-average maturity	6 years
Unsecured Debt \| Minimum
Debt Instrument [Line Items]
Interest rate (as a percent)	2.79%	2.79%
Unsecured Debt \| Maximum
Debt Instrument [Line Items]
Interest rate (as a percent)	6.87%	6.87%
Unsecured Debt \| Debt maturing in 2019
Debt Instrument [Line Items]
Interest rate (as a percent)	0.00%	0.00%
2019	$ 0
Unsecured Debt \| Debt maturing in 2020
Debt Instrument [Line Items]
Interest rate (as a percent)	2.79%	2.79%
2020	$ 800,000
Unsecured Debt \| Debt maturing in 2021
Debt Instrument [Line Items]
Interest rate (as a percent)	0.00%	0.00%
2021	$ 0
Unsecured Debt \| Debt maturing in 2022
Debt Instrument [Line Items]
Interest rate (as a percent)	3.93%	3.93%
2022	$ 900,000
Unsecured Debt \| Debt maturing in 2023
Debt Instrument [Line Items]
Interest rate (as a percent)	4.39%	4.39%
2023	$ 800,000
Unsecured Debt \| Thereafter
Debt Instrument [Line Items]
Interest rate (as a percent)	4.34%	4.34%
Thereafter	$ 2,800,000
Mortgage debt
Debt Instrument [Line Items]
Interest rate (as a percent)
Long-term debt, gross	$ 133,334
(Discounts), premiums and debt costs, net	5,136
Long-term debt	$ 138,470
Weighted-average interest rate (as a percent)	4.20%	4.20%
Weighted-average maturity	19 years
Mortgage debt \| Minimum
Debt Instrument [Line Items]
Interest rate (as a percent)	2.80%	2.80%
Mortgage debt \| Maximum
Debt Instrument [Line Items]
Interest rate (as a percent)	5.91%	5.91%
Mortgage debt \| Debt maturing in 2019
Debt Instrument [Line Items]
Interest rate (as a percent)	0.00%	0.00%
2019	$ 3,561
Mortgage debt \| Debt maturing in 2020
Debt Instrument [Line Items]
Interest rate (as a percent)	5.08%	5.08%
2020	$ 3,609
Mortgage debt \| Debt maturing in 2021
Debt Instrument [Line Items]
Interest rate (as a percent)	5.26%	5.26%
2021	$ 10,957
Mortgage debt \| Debt maturing in 2022
Debt Instrument [Line Items]
Interest rate (as a percent)	0.00%	0.00%
2022	$ 2,691
Mortgage debt \| Debt maturing in 2023
Debt Instrument [Line Items]
Interest rate (as a percent)	0.00%	0.00%
2023	$ 2,811
Mortgage debt \| Thereafter
Debt Instrument [Line Items]
Interest rate (as a percent)	4.10%	4.10%
Thereafter	$ 109,705
Life Care Bonds and Demand Notes
Debt Instrument [Line Items]
Other debt	91,000
Life Care Bonds
Debt Instrument [Line Items]
Other debt	$ 58,000
On-Demand Note
Debt Instrument [Line Items]
Interest rate (as a percent)	3.60%	3.60%
Other debt	$ 33,000