Debt Instrument, Outstanding Percentage, Maximum

No definition available.

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- Definition

Debt Instrument, Redemption Percentage, Maximum

+ References

No definition available.

+ Details

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- Definition

Weighted average interest rate on debt during the period.

+ References

No definition available.

+ Details

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- Definition

Line of Credit Facility Required Principal Payment Before Maturity

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

The number of buildings serving as collateral for debt as of the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

Represents the number of properties.

+ References

No definition available.

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- Definition

Real Estate Investment Property, Lease Obligations

+ References

No definition available.

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- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

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-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
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- Definition

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

+ References

No definition available.

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Balance Type:	na
Period Type:	duration

- Definition

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

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Balance Type:	credit
Period Type:	instant

- Definition

Increase for accrued, but unpaid interest on the debt instrument for the period.

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-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Incremental percentage increase (decrease) in the stated rate on a debt instrument.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

+ Details

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Balance Type:	na
Period Type:	instant

- 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.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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Balance Type:	na
Period Type:	instant

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Balance Type:	credit
Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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- Definition

The effective interest rate at the end of the reporting period.

+ References

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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-SubTopic 10
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Balance Type:	debit
Period Type:	duration

- Definition

Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

+ References

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Balance Type:	credit
Period Type:	duration

- Definition

Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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Period Type:	instant

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Indebtedness (Details)				1 Months Ended			2 Months Ended	3 Months Ended		5 Months Ended	6 Months Ended
Indebtedness (Details)	May 21, 2020 $ / shares	Apr. 01, 2020	Feb. 20, 2020 $ / shares	May 31, 2020 USD ($) property	Apr. 30, 2020 USD ($)	Feb. 29, 2020 USD ($) property	Jun. 02, 2020	Jun. 30, 2020 USD ($) property	Jun. 30, 2019 USD ($)	Jun. 02, 2020	Jun. 30, 2020 USD ($) property $ / shares	Jun. 30, 2019 USD ($)	Aug. 03, 2020 USD ($)	Dec. 31, 2019 USD ($)
Indebtedness
Total real estate properties, gross								$ 7,519,575,000			$ 7,519,575,000			$ 7,461,586,000
Loss on early extinguishment of debt								181,000	$ 17,000		427,000	$ 17,000
Unsecured revolving credit facility								$ 0			$ 0			$ 537,500,000
Dividend per share (in dollars per share) \| $ / shares	$ 0.01		$ 0.15								$ 0.01
Joint Venture
Indebtedness
Ownership percentage								55.00%			55.00%
LIBOR
Indebtedness
Interest rate premium increase (as a percent)											50.00%
Unsecured revolving credit facility
Indebtedness
Unsecured revolving credit facility, maximum borrowing capacity								$ 1,000,000,000			$ 1,000,000,000
Line of credit facility, periodic payment, principal								$ 0
Revolving credit facility, interest rate payable (as a percent)								2.60%			2.60%
Weighted average interest rate on debt (as a percent)								1.80%	3.60%		2.20%	3.60%
Unsecured revolving credit facility								$ 200,000,000			$ 200,000,000
Unsecured revolving credit facility \| LIBOR
Indebtedness
Interest rate added to the base rate (as a percent)		1.55%									1.55%
Debt instrument, facility fee (as a percent)		0.30%									0.30%
Unsecured revolving credit facility \| Subsequent Event
Indebtedness
Revolving credit facility, available amount													$ 1,000,000,000
Unsecured revolving credit facility													$ 0
Mortgages
Indebtedness
Aggregate principal amount of mortgage debt								$ 685,428,000			$ 685,428,000
Number of properties mortgaged \| property								7			7
Total real estate properties, gross								$ 1,258,457,000			$ 1,258,457,000
Mortgages \| Joint Venture
Indebtedness
Aggregate principal amount of mortgage debt								$ 620,000,000			$ 620,000,000
Ownership percentage								55.00%			55.00%
Finance Leases
Indebtedness
Number of properties mortgaged \| property								2			2
Total real estate properties, gross								$ 35,708,000			$ 35,708,000
Lease obligations								8,352,000			8,352,000
Term loan due 2022
Indebtedness
Debt face amount								$ 200,000,000			$ 200,000,000
Weighted average interest rate on debt (as a percent)								2.30%	3.90%		2.70%	3.90%
Interest rate (as a percent)								2.40%			2.40%
Term loan due 2022 \| LIBOR
Indebtedness
Interest rate added to the base rate (as a percent)											1.75%
Term loan due 2020
Indebtedness
Debt face amount								$ 250,000			$ 250,000
Weighted average interest rate on debt (as a percent)							1.90%			2.40%
Loss on early extinguishment of debt								26,000			26,000
Senior Unsecured Note Due 2020
Indebtedness
Interest rate (as a percent)					6.75%
Principal amount plus accrued and unpaid interest					$ 200,000,000
Unpaid interest					$ 6,750,000
Mortgage 7.49 Percent Due January 2022 \| Medical Office Buildings
Indebtedness
Interest rate (as a percent)				7.49%
Number of properties \| property				1
Loss on early extinguishment of debt								155,000			155,000
Repayments of debt				$ 1,213,000
Senior Unsecured Note Due March 2025
Indebtedness
Debt face amount								$ 1,000,000,000			$ 1,000,000,000
Interest rate (as a percent)								9.75%			9.75%
Proceeds from debt											$ 983,500,000
Redemption percentage, maximum								40.00%			40.00%
Outstanding percentage, maximum								50.00%			50.00%
Senior Unsecured Note Due March 2026 \| Life Science Building
Indebtedness
Interest rate (as a percent)						6.25%
Number of properties \| property						1
Loss on early extinguishment of debt											$ 246,000
Repayments of debt						$ 1,554,000
Unsecured Debt
Indebtedness
Debt face amount								$ 2,650,000,000			2,650,000,000
Term Loan
Indebtedness
Debt face amount								$ 200,000,000			$ 200,000,000