Property, Plant and Equipment

3 Months Ended

Mar. 31, 2021

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:

	March 31,				December 31,
In thousands	2021		2020		2020
NW Natural:
NGD plant in service	$	3,594,226	$	3,344,345	$	3,548,543
NGD work in progress	70,766		95,566		63,901
Less: Accumulated depreciation	1,067,502		1,030,234		1,055,809
NGD plant, net	2,597,490		2,409,677		2,556,635
Other plant in service	66,314		64,314		66,300
Other construction work in progress	5,125		4,824		5,032
Less: Accumulated depreciation	19,889		18,901		19,637
Other plant, net	51,550		50,237		51,695
Total property, plant, and equipment, net	$	2,649,040	$	2,459,914	$	2,608,330
Other (NW Holdings):
Other plant in service	$	51,852	$	42,016	$	50,263
Less: Accumulated depreciation	4,512		1,715		3,823
Other plant, net	$	47,340	$	40,301	$	46,440
NW Holdings:
Total property, plant, and equipment, net	$	2,696,380	$	2,500,215	$	2,654,770
NW Natural:
Capital expenditures in accrued liabilities	$	20,969	$	33,999	$	25,129
NW Holdings:
Capital expenditures in accrued liabilities	$	21,118	$	33,999	$	25,129