Regulated Utility, Allowed Rate of Return on Net Regulatory Assets and Liabilities

No definition available.

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- Definition

Regulatory Assets and Liabiliaties [Line Items]

+ References

No definition available.

+ Details

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- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 20
-Section 45
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109238882&loc=d3e38679-109324

+ Details

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- Definition

Amount of public utility's approved rate increase (decrease) by regulatory agency.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Amount of public utility's requested rate increase (decrease) with regulatory agency.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Percentage of public utility's requested rate increase (decrease) with regulatory agency.

+ References

No definition available.

+ Details

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- Details

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Expedited Rate Filing Rate Adjustment (Details) - USD ($)						6 Months Ended	12 Months Ended
	Mar. 01, 2019	Jan. 30, 2019	Nov. 07, 2018	May 01, 2018	Dec. 19, 2017	Dec. 31, 2013	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Regulatory Assets [Line Items]
Income tax (benefit) expense							$ 17,073,000	$ 30,092,000	$ 255,143,000
Subsidiaries [Member]
Regulatory Assets [Line Items]
Income tax (benefit) expense				$ 34,600,000			$ 39,148,000	$ 50,700,000	$ 211,986,000
Regulated Utility, Allowed Rate of Return on Net Regulatory Assets and Liabilities			7.49%		7.60%	7.77%
Subsidiaries [Member] \| Natural Gas, US Regulated [Member] \| Expedited Rate Filing (ERF) [Member]
Regulatory Assets [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount	$ 6,100,000		$ 21,700,000
Public Utilities, Approved Rate Increase (Decrease), Amount	$ 25,900,000	$ 21,500,000
Public Utilities, Requested Rate Increase (Decrease), Percentage			2.70%
Subsidiaries [Member] \| Electricity, US Regulated [Member] \| Expedited Rate Filing (ERF) [Member]
Regulatory Assets [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount			$ 18,900,000
Public Utilities, Approved Rate Increase (Decrease), Amount		$ 0
Public Utilities, Requested Rate Increase (Decrease), Percentage			0.90%