XML 64 R46.htm IDEA: XBRL DOCUMENT v3.20.4

Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2020

Regulatory Assets and Liabilities Disclosure [Abstract]

Regulatory Assets

Regulatory assets were comprised of the following items: 

At December 31, (in millions)			2020						2019
Regulatory Assets
Unrecognized pension and other postretirement benefit costs (see Note 12)			$	583.3					$	739.1
Deferred pension and other postretirement benefit costs (see Note 12)			72.4						91.3
Environmental costs (see Note 20-D)			56.6						73.4
Regulatory effects of accounting for income taxes (see Note 1-N and Note 11)			194.5						234.0
Under-recovered gas and fuel costs (see Note 1-J)			8.0						3.9
Depreciation			192.6						210.7
Post-in-service carrying charges			228.6						219.8
Safety activity costs			146.0						118.6
DSM programs			37.8						50.1
Bailly Generating Station			204.7						221.8
Losses on Commodity Price Risk Programs (See Note 10)			54.7						76.4
Deferred Property Taxes			62.9						60.3
Other			88.4						140.2
Total Regulatory Assets			$	1,930.5					$	2,239.6
Less: Current Portion			135.7						225.7
Total Noncurrent Regulatory Assets			$	1,794.8					$	2,013.9

Regulatory Liabilities

Regulatory liabilities were comprised of the following items: 

At December 31, (in millions)			2020						2019
Regulatory Liabilities
Over-recovered gas and fuel costs (see Note 1-J)			$	47.8					$	42.6
Cost of removal (see Note 8)			775.2						1,047.5
Regulatory effects of accounting for income taxes (see Note 1-N and Note 11)			1,105.1						1,307.0
Deferred pension and other postretirement benefit costs (see Note 12)			69.5						64.7
Other			67.9						50.4
Total Regulatory Liabilities			$	2,065.5					$	2,512.2
Less: Current Portion			161.3						160.2
Total Noncurrent Regulatory Liabilities			$	1,904.2					$	2,352.0

X

- References

No definition available.

+ Details

Name:	us-gaap_RegulatoryAssetsAndLiabilitiesDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of assets that are created when regulatory agencies permit public utilities to defer certain costs included in rate-setting to the balance sheet.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 715
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6501251&loc=d3e52485-110419

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 340
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44264-110382

+ Details

Name:	us-gaap_ScheduleOfRegulatoryAssetsTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of regulatory liabilities. Detailed information about liabilities that result from rate actions of a regulator. Rate actions of a regulator can impose a liability on a regulated enterprise resulting in a regulatory liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 405
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6500807&loc=d3e48068-110394

+ Details

Name:	us-gaap_ScheduleOfRegulatoryLiabilitiesTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration