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- Definition

Net Process from Sale

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Preferred Stock, Dividend Rate, Initial Margin

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Preferred Stock, Dividend Rate, Initial Margin Plus 1.000%

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Shares To Be Issued Under Stock Purchase Contracts

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Undivided Beneficial Ownership Interest, Percent

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- Definition

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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Amount that would be paid upon settlement of forward contract indexed to equity.

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- Definition

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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- Definition

Aggregate amount of cumulative preferred dividends in arrears.

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- Definition

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

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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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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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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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Per share or per unit amount of equity securities issued.

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Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions					1 Months Ended			12 Months Ended
	Dec. 14, 2021	Dec. 13, 2021	Jun. 11, 2021	Jun. 11, 2018	Sep. 01, 2021	Mar. 17, 2021	Dec. 31, 2018	Dec. 31, 2021	Jun. 15, 2023	Apr. 19, 2021	Feb. 22, 2021	Dec. 31, 2020	Dec. 31, 2019	Aug. 01, 2019	Dec. 05, 2018	Nov. 01, 2018
Forward Contract Indexed to Issuer's Equity [Line Items]
Common Stock Aggregate Sale Price											$ 750.0			$ 434.4		$ 500.0
Preferred Stock, Par or Stated Value Per Share								$ 0.01				$ 0.01
Net Process from Sale										$ 835.5
Series A Corporate Units
Forward Contract Indexed to Issuer's Equity [Line Items]
Shares Issued, Price Per Share										$ 100
Corporate Units Contract Annual Rate										7.75%
Shares To Be Issued Under Stock Purchase Contracts								35,200,000
Series C Preferred Stock
Forward Contract Indexed to Issuer's Equity [Line Items]
Shares To Be Issued Under Stock Purchase Contracts								35,200,000
Series A Preferred Stock
Forward Contract Indexed to Issuer's Equity [Line Items]
Preferred Stock, Shares Issued								400,000
Preferred Stock, Dividend Rate, Percentage				5.65%
Preferred Stock, Liquidation Preference Per Share								$ 1,000
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								$ 2.51
Preferred Stock, Liquidation Preference, Value								$ 400.0				$ 400.0	$ 400.0
Series B Preferred Stock
Forward Contract Indexed to Issuer's Equity [Line Items]
Preferred Stock, Dividend Rate, Percentage							6.50%
Preferred Stock, Liquidation Preference Per Share								$ 25,000
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								$ 72.23
Preferred Stock Depositary Shares Issued															20,000,000
Preferred Stock, Liquidation Preference, Value								$ 500.0				$ 500.0	$ 500.0
Depositary Stock Liquidation Preference								$ 25
Series B-1 Preferred Stock
Forward Contract Indexed to Issuer's Equity [Line Items]
Preferred Stock, Shares Issued								20,000
Series C Preferred Stock
Forward Contract Indexed to Issuer's Equity [Line Items]
Preferred Stock, Liquidation Preference Per Share								$ 1,000
Preferred Stock, Liquidation Preference, Value								$ 863.0
Preferred Stock, Par or Stated Value Per Share										$ 0.01
Undivided Beneficial Ownership Interest, Percent										10.00%
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
Forward February 21
Forward Contract Indexed to Issuer's Equity [Line Items]
Forward Contract Indexed to Issuer's Equity, Shares						6,672,740
Derivative, Forward Price	$ 21.48					$ 22.48
Forward Contract Indexed to Issuer's Equity, Settlement Alternatives, Cash, at Fair Value	$ 143.3
Forward June 2021
Forward Contract Indexed to Issuer's Equity [Line Items]
Forward Contract Indexed to Issuer's Equity, Shares			5,852,475
Derivative, Forward Price		$ 24.85	$ 25.63
Forward Contract Indexed to Issuer's Equity, Settlement Alternatives, Cash, at Fair Value		$ 145.4
Forward August 2021
Forward Contract Indexed to Issuer's Equity [Line Items]
Forward Contract Indexed to Issuer's Equity, Shares					5,941,598
Derivative, Forward Price					$ 25.25			$ 24.71
Forward Contract Indexed to Issuer's Equity, Settlement Alternatives, Cash, at Fair Value								$ 146.8
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
At The Market Program
Forward Contract Indexed to Issuer's Equity [Line Items]
ATM Program Equity Remaining Available for Issuance								$ 300.0
Subsequent Event \| Series A Preferred Stock
Forward Contract Indexed to Issuer's Equity [Line Items]
Preferred Stock, Liquidation Preference Per Share									$ 1,000