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Common Equity (Common Share Activity) (Details)	3 Months Ended
	Mar. 31, 2021 shares
Common Stock Oustanding [Roll Forward]
Shares outstanding, January 1, 2021 (in shares)	249,868,415
Shareowner Direct Plan (in shares)	152,588
Equity-based compensation plans (in shares)	113,549
Shares outstanding, March 31, 2021 (in shares)	250,134,552

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Common Stock Oustanding [Roll Forward]

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Shares Of Stock Issued Shareowner Direct Plan

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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
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-Topic 210
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-Section S99
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-Subparagraph (SX 210.5-02(29))
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Number of shares issued during the period as a result of an employee stock purchase plan.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 505
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