Property, Plant and Equipment (Tables)

3 Months Ended

Mar. 31, 2020

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	2020		2019		2019
NW Natural:
NGD plant in service	$	3,344,345	$	3,159,754	$	3,302,049
NGD work in progress	95,566		204,938		84,965
Less: Accumulated depreciation	1,030,234		985,961		1,017,931
NGD plant, net	2,409,677		2,378,731		2,369,083
Other plant in service	64,314		65,283		63,513
Other construction work in progress	4,824		5,329		5,548
Less: Accumulated depreciation	18,901		18,851		18,662
Other plant, net	50,237		51,761		50,399
Total property, plant, and equipment	$	2,459,914	$	2,430,492	$	2,419,482
Other (NW Holdings):
Other plant in service	$	42,016	$	4,156	$	20,671
Less: Accumulated depreciation	1,715		305		1,254
Other plant, net	$	40,301	$	3,851	$	19,417
NW Holdings:
Total property, plant, and equipment	$	2,500,215	$	2,434,343	$	2,438,899
NW Natural and NW Holdings:
Capital expenditures in accrued liabilities	$	33,999	$	25,035	$	32,502