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

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
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- Definition

The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

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.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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Subsequent Events Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions						3 Months Ended								12 Months Ended
	Feb. 18, 2020	Feb. 11, 2020	Feb. 06, 2020	Aug. 16, 2019	Feb. 07, 2019	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Common Stock
Subsequent Event [Line Items]
Number of shares issued during period (in shares)				14,000,000	16,100,000
Sale of stock, price (in USD per share)				$ 15.86	$ 15.73
Proceeds from issuance of common stock				$ 219.3	$ 249.5
Series B Preferred Stock
Subsequent Event [Line Items]
Preferred stock, dividends (in USD per share)						$ 0.4844	$ 0.4844	$ 0.4844	$ 0.4844	$ 0.4844	$ 0.4844	$ 0.4844	$ 0.4844	$ 1.937600	$ 1.937600
Series C Preferred Stock
Subsequent Event [Line Items]
Preferred stock, dividends (in USD per share)						$ 0.46875	$ 0.46875	$ 0.46875	$ 0.46875	$ 0.46875	$ 0.46875	$ 0.46875	$ 0.46875	$ 1.875000	$ 1.875000
Subsequent Event
Subsequent Event [Line Items]
Secured loans		$ 300.0
Subsequent Event \| Common Stock
Subsequent Event [Line Items]
Number of shares issued during period (in shares)			20,700,000
Sale of stock, price (in USD per share)			$ 16.78
Proceeds from issuance of common stock			$ 347.0
Subsequent Event \| Series B Preferred Stock
Subsequent Event [Line Items]
Preferred stock, dividends (in USD per share)	$ 0.4844
Subsequent Event \| Series C Preferred Stock
Subsequent Event [Line Items]
Preferred stock, dividends (in USD per share)	$ 0.46875