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Subsequent Event (Narrative) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	Apr. 19, 2021	Mar. 31, 2021	Dec. 31, 2020
Subsequent Event [Line Items]
Preferred Stock, Par or Stated Value Per Share		$ 0.01	$ 0.01
Subsequent Event | Series C Preferred Stock
Subsequent Event [Line Items]
Undivided Beneficial Ownership Interest, Percent	10.00%
Preferred Stock, Par or Stated Value Per Share	$ 0.01
Preferred Stock, Liquidation Preference Per Share	$ 1,000
Subsequent Event | Series A Corporate Units
Subsequent Event [Line Items]
Stock Issued During Period, Shares, New Issues	8,625
Shares Issued, Price Per Share	$ 100
Net Proceeds from Sale	$ 835.5
Corporate Units Contract Annual Rate	7.75%

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Net Proceeds from Sale

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

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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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