Equity: Equity Issuance (Details) - Private Placement $ / shares in Units, shares in Millions, $ in Millions	Feb. 27, 2020 USD ($) $ / shares shares
Sale of Stock, Number of Shares Issued in Transaction \| shares	1.2
Sale of Stock, Price Per Share \| $ / shares	$ 81.77
Sale of Stock, Consideration Received on Transaction	$ 99.0
Payments of Stock Issuance Costs	$ 1.0

The cash outflow for cost incurred directly with the issuance of an equity security.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-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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Namespace Prefix:	us-gaap_
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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Namespace Prefix:	us-gaap_
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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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- Details

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