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Depositary Stock Liquidation Preference

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Number Of Equity Distribution Agreements

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- Definition

Preferred Stock Depositary Shares Issued

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- Definition

Preferred Stock, Dividend Rate, Initial Margin

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Preferred Stock, Dividend Rate, Initial Margin Plus 1.000%

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

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Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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The per share price of the Company's stock at which the contract holder of the freestanding contract has the right to purchase or sell the Company's stock at a future date.

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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.

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Current fair value of each cash settlement alternative for each freestanding forward contract.

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The maximum number of shares that could be issued to net share settle a contract, if applicable. If a contract does not have a fixed or determinable maximum number of shares that may be required to be issued, disclose the fact that a potentially infinite number of shares could be issued to settle the contract.

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Aggregate amount of cumulative preferred dividends in arrears.

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The percentage rate used to calculate dividend payments on preferred stock.

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No definition available.

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The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share.

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Value of the difference between preference in liquidation and the par or stated values of the preferred shares.

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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Per share amount of cumulative preferred dividends in arrears.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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Proceeds from issuance of capital stock which provides for a specific dividend that is paid to the shareholders before any dividends to common stockholders and which takes precedence over common stockholders in the event of liquidation.

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The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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No definition available.

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Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury.

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Equity (Narrative) (Details) $ / shares in Units, $ in Millions												1 Months Ended			12 Months Ended
	Dec. 15, 2020 USD ($) $ / shares	Sep. 16, 2020 $ / shares shares	Dec. 11, 2019 USD ($) $ / shares	Nov. 21, 2019 USD ($) $ / shares	Aug. 01, 2019	Dec. 10, 2018 $ / shares shares	Nov. 06, 2018 USD ($) $ / shares	Nov. 01, 2018 USD ($)	Jun. 11, 2018 USD ($)	May 04, 2018 USD ($) $ / shares shares	May 03, 2017 USD ($)	Sep. 03, 2020 $ / shares shares	Sep. 13, 2019 $ / shares shares	Dec. 31, 2018 USD ($) shares	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Jun. 15, 2023 $ / shares	Dec. 05, 2018 shares	Dec. 31, 2017 shares
Forward Contract Indexed to Issuer's Equity [Line Items]
Common stock, shares authorized \| shares															600,000,000	600,000,000
Preferred Stock, Shares Authorized \| shares															20,000,000	20,000,000
Common Stock, Shares, Outstanding \| shares															391,760,051	382,135,680
Preferred Stock, Shares Outstanding \| shares															440,000	440,000
Common Stock, Dividends, Per Share, Declared \| $ / shares															$ 0.84	$ 0.80	$ 0.78
Shares, Issued \| shares														372,363,000	391,760,000	382,136,000	372,363,000			337,016,000
Common stock, par value \| $ / shares															$ 0.01	$ 0.01
Proceeds from Issuance of Preferred Stock and Preference Stock \| $															$ 0.0	$ 0.0	$ 880.0
Preferred Stock, Par or Stated Value Per Share \| $ / shares															$ 0.01	$ 0.01
Series A Preferred Stock
Forward Contract Indexed to Issuer's Equity [Line Items]
Preferred Stock, Shares Outstanding \| shares															400,000
Preferred Stock, Shares Issued \| shares															400,000
Preferred Stock, Dividend Rate, Percentage									5.65%
Preferred Stock, Liquidation Preference Per Share \| $ / shares															$ 1,000.00
Preferred Stock, Dividend Rate, Initial Margin									2.843%
Preferred Stock, Dividend Rate, Initial Margin Plus 1.000%									1.00%
Preferred Stock, Amount of Preferred Dividends in Arrears \| $															$ 1.0
Preferred Stock, Per Share Amounts of Preferred Dividends in Arrears \| $ / shares															$ 2.51
Preferred Stock, Liquidation Preference, Value \| $															$ 400.0
Series B Preferred Stock
Forward Contract Indexed to Issuer's Equity [Line Items]
Preferred Stock, Shares Outstanding \| shares															20,000
Preferred Stock, Dividend Rate, Percentage														6.50%
Preferred Stock, Liquidation Preference Per Share \| $ / shares															$ 25,000.00
Preferred Stock, Dividend Rate, Initial Margin														3.632%
Preferred Stock, Dividend Rate, Initial Margin Plus 1.000%														1.00%
Preferred Stock, Amount of Preferred Dividends in Arrears \| $															$ 1.4
Preferred Stock, Per Share Amounts of Preferred Dividends in Arrears \| $ / shares															$ 72.23
Preferred Stock Depositary Shares Issued \| shares																			20,000,000
Preferred Stock, Liquidation Preference, Value \| $															$ 500.0
Depositary Stock Liquidation Preference \| $ / shares															$ 25
Series B-1 Preferred Stock
Forward Contract Indexed to Issuer's Equity [Line Items]
Preferred Stock, Shares Issued \| shares															20,000
Gross Proceeds \| Series A Preferred Stock
Forward Contract Indexed to Issuer's Equity [Line Items]
Proceeds from Issuance of Preferred Stock and Preference Stock \| $									$ 400.0
Gross Proceeds \| Series B Preferred Stock
Forward Contract Indexed to Issuer's Equity [Line Items]
Proceeds from Issuance of Preferred Stock and Preference Stock \| $														$ 500.0
Common Stock
Forward Contract Indexed to Issuer's Equity [Line Items]
Shares, Issued \| shares										24,964,163				376,326,000	395,723,000	386,099,000	376,326,000			340,813,000
Common stock, par value \| $ / shares										$ 0.01
Sale of Stock, Price Per Share \| $ / shares										$ 24.28
Common Stock \| Gross Proceeds
Forward Contract Indexed to Issuer's Equity [Line Items]
Proceeds from Issuance of Private Placement \| $										$ 606.0
Common Stock \| Net Proceeds
Forward Contract Indexed to Issuer's Equity [Line Items]
Proceeds from Issuance of Private Placement \| $										$ 599.6
At The Market Program
Forward Contract Indexed to Issuer's Equity [Line Items]
Number Of Equity Distribution Agreements					4			5			4
Common Stock Aggregate Sale Price \| $								$ 500.0			$ 500.0				$ 434.4
Derivative, Forward Price \| $ / shares						$ 26.55
Forward Contract Indexed to Issuer's Equity, Shares \| shares						4,708,098
Forward Agreement
Forward Contract Indexed to Issuer's Equity [Line Items]
Derivative, Forward Price \| $ / shares	$ 22.77		$ 28.83	$ 26.01			$ 26.43
Forward Contract Indexed to Issuer's Equity, Settlement Alternatives, Cash, at Fair Value \| $	$ 64.0		$ 107.1	$ 122.5			$ 167.7
Forward Agreement 19
Forward Contract Indexed to Issuer's Equity [Line Items]
Derivative, Forward Price \| $ / shares													$ 29.26
Forward Contract Indexed to Issuer's Equity, Shares \| shares													3,714,400
Preferred Stock
Forward Contract Indexed to Issuer's Equity [Line Items]
Shares, Issued \| shares														420,000	440,000	440,000	420,000			0
Preferred Stock \| Series A Preferred Stock
Forward Contract Indexed to Issuer's Equity [Line Items]
Proceeds from Issuance of Preferred Stock and Preference Stock \| $									$ 393.9
Preferred Stock \| Net Proceeds \| Series B Preferred Stock
Forward Contract Indexed to Issuer's Equity [Line Items]
Proceeds from Issuance of Preferred Stock and Preference Stock \| $														$ 486.1
Forward August 20 [Member]
Forward Contract Indexed to Issuer's Equity [Line Items]
Derivative, Forward Price \| $ / shares												$ 23.25
Forward Contract Indexed to Issuer's Equity, Shares \| shares												2,809,029
Forward September 20 [Member]
Forward Contract Indexed to Issuer's Equity [Line Items]
Derivative, Forward Price \| $ / shares	$ 21.82	$ 22.28
Forward Contract Indexed to Issuer's Equity, Settlement Alternatives, Cash, at Fair Value \| $	$ 31.7
Forward Contract Indexed to Issuer's Equity, Shares \| shares		1,452,102
Subsequent Event \| Series A Preferred Stock
Forward Contract Indexed to Issuer's Equity [Line Items]
Preferred Stock, Liquidation Preference Per Share \| $ / shares																		$ 1,000