Consolidated Balance Sheets (Parenthetical) - $ / shares shares in Millions	Dec. 31, 2019	Dec. 31, 2018
Consolidated Balance Sheets
Common stock, shares authorized	150.0	150.0
Common stock, stated value (in dollars per share)	$ 0.75	$ 0.75
Common stock, shares outstanding	42.9	42.7

Face amount or stated value per share of common stock.

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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
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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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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

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