Supplemental Cash Flow Disclosures (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Supplemental disclosures:
Cash paid for interest		$ 126,173	$ 147,317
Cash paid for income taxes		3,885	3,962
Non-cash investing and financing activities:
Accrued capital expenditures, tenant improvements and real estate developments		13,513	8,551
Real estate contributions to industrial partnership and office partnership		7,494	29,577
Distributions declared and unpaid		85,231	143,306
Distributions payable relinquished	$ 6,429	0	6,429
Real estate investments received from lease related transactions		259	0
Exchange of real estate investments		$ 0	$ 8,900

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The cash outflow or inflow increase (decrease) in distribution due to real estate partnership based upon payments and accruals.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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The amount of investments that an Entity acquires in a noncash (or part noncash) acquisition. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Accrued Distributions

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Capital Expenditures Incurred and Not Yet Paid and Real Estate Developments

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Distributions Payable Relinquished

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Noncash or Part Noncash Acquisition, Real Estate Investments Acquired From Lease Related Transaction

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Supplemental Cash Flow Disclosures [Abstract]

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