Represents the fair value of share-based awards other than options issued during the period.

No definition available.

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The amount of adjustment to stockholders' equity associated with an employee's income tax withholding obligation as part of a net-share settlement of a share-based award.

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No definition available.

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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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The increase (decrease) during the period in the carrying value of derivative instruments reported as assets that are due to be disposed of within one year (or the normal operating cycle, if longer).

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The increase (decrease) during the period in the carrying value of derivative instruments reported as liabilities that are due to be disposed of within one year (or the normal operating cycle, if longer).

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Change in noncontrolling interest during the period as a result of a change in the redemption value of redeemable noncontrolling interest.

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Amount, after tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Amount of real estate investment property, net of accumulated depreciation, 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.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer.

+ References

No definition available.

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Number of shares issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the shareholders to reinvest dividends paid to them by the entity on new issues of stock by the entity.

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Number of shares (or other type of equity) forfeited during the period.

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No definition available.

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Value of stock issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the holder of the stock to reinvest dividends paid to them by the entity on new issues of stock by the entity.

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Value of forfeitures of stock or other type of equity issued of any equity-based compensation plan other than an employee stock ownership plan (ESOP).

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Supplemental disclosures of non-cash investing and financing activities
Common stock issued through the dividend reinvestment plan (in shares)			1,713	2,466
Common stock issued through the dividend reinvestment plan			$ 290	$ 452
Number of shares withheld to satisfy employees' tax withholding and other liabilities (in shares)			67,963	60,165
Shares withheld to satisfy employees' tax withholding and other liabilities, value			$ 10,543	$ 10,514
Stock issued during period, shares, share-based compensation, forfeited (in shares)			4,622
Stock issued during period, value, share-based compensation, forfeited			$ 679	528
Dividends declared but not paid	$ 203,624	$ 196,079	203,624	196,079	$ 196,094
Change in redemption value of redeemable noncontrolling interest			(626)
Cash flow hedge losses reclassified to earnings	(1,466)	(1,767)	(4,679)	(5,301)
Increase (decrease) in prepaid expense and other assets				1,422
Increase in accrued expenses, other liabilities and accrued interest payable				1,998
Net operating real estate	$ 16,082,262		$ 16,082,262		$ 16,342,893
Avalon Maplewood [Member]
Supplemental disclosures of non-cash investing and financing activities
Net operating real estate		$ 16,361		$ 16,361
Restricted Stock and Restricted Stock Converted From Performance Shares
Supplemental disclosures of non-cash investing and financing activities
Equity instruments granted (in shares)			187,010	201,314
Restricted Stock Converted From Performance Shares
Supplemental disclosures of non-cash investing and financing activities
Equity instruments granted (in shares)			88,297	128,482
Restricted stock
Supplemental disclosures of non-cash investing and financing activities
Equity instruments granted (in shares)			98,713	72,832
Fair value of shares issued			$ 15,950	$ 13,079
Stock issued during period, shares, share-based compensation, forfeited (in shares)			4,622	3,045
Accumulated earnings less dividends
Supplemental disclosures of non-cash investing and financing activities
Change in redemption value of redeemable noncontrolling interest			$ (626)	$ 458