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Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Environmental Obligations Recognized by Company

The following table sets forth a summary of changes in the Company’s liability for Environmental Obligations for the years ended December 31, 2018 and 2017. The Company’s current and noncurrent environmental obligations are recorded on the Company’s Consolidated Balance Sheets in Other Current Liabilities and Other Noncurrent Liabilities, respectively.

Environmental Obligations

		(millions)
		Fitchburg								Northern Utilities								Total
		2018				2017				2018				2017				2018				2017
Total Balance at Beginning of Period		$	0.1			$	0.1			$	2.0			$	1.8			$	2.1			$	1.9
Additions			—				—				0.3				0.4				0.3				0.4
Less: Payments / Reductions			0.1				—				0.3				0.2				0.4				0.2
Total Balance at End of Period		$	—			$	0.1			$	2.0			$	2.0			$	2.0			$	2.1
Less: Current Portion			—				—				0.6				0.5				0.6				0.5
Noncurrent Balance at December 31,		$	—			$	0.1			$	1.4			$	1.5			$	1.4			$	1.6

X

- Definition

Tabular disclosure of environmental loss contingencies by individual site. Does not include loss contingencies that are not environmental in nature.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13296-110859

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 5.Y.Q2)
-URI http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13283-110859

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 50
-Paragraph 10
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13237-110859

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