Property, Plant and Equipment (Tables)

6 Months Ended

Jun. 30, 2019

Property, Plant and Equipment [Abstract]

Public Utility Property, Plant, and Equipment [Table Text Block]

The following table sets forth the major classifications of property, plant, and equipment and accumulated depreciation of continuing operations:

	June 30,				December 31,
In thousands	2019		2018		2018
NW Natural:
NGD plant in service	$	3,193,121	$	3,035,089	$	3,134,122
NGD work in progress	75,045		192,496		204,978
Less: Accumulated depreciation	997,111		966,766		974,252
NGD plant, net	2,271,055		2,260,819		2,364,848
Other plant in service	63,385		65,548		66,009
Other construction work in progress	5,454		5,347		5,330
Less: Accumulated depreciation	18,650		18,024		18,603
Other plant, net (1)	50,189		52,871		52,736
Total property, plant, and equipment	$	2,321,244	$	2,313,690	$	2,417,584
Other (NW Holdings):
Other plant in service	$	18,806	$	376	$	4,051
Less: Accumulated depreciation	424		208		263
Other plant, net (1)	$	18,382	$	168	$	3,788
NW Holdings:
Total property, plant, and equipment	$	2,339,626	$	2,313,858	$	2,421,372
NW Natural and NW Holdings:
Capital expenditures in accrued liabilities	$	32,923	$	22,112	$	23,676

⁽¹⁾ NW Natural previously reported other balances were restated due to certain assets and liabilities now being classified as discontinued operations assets and liabilities in its balance sheets. See Note 18 for further discussion.