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Segment Information (Tables)

12 Months Ended

Dec. 31, 2023

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

The following table presents summary financial information concerning the reportable segment and other operations.


In thousands						NGD						Other (NW Natural)						NW Natural						Other (NW Holdings)						NW Holdings
2023
Operating revenues						$	1,136,400					$	22,223					$	1,158,623					$	38,852					$	1,197,475
Depreciation						118,417						1,097						119,514						6,067						125,581
Income (loss) from operations						170,591						15,054						185,645						(704)						184,941
Net income (loss)						94,042						10,695						104,737						(10,869)						93,868
Capital expenditures						285,998						4,847						290,845						36,502						327,347
Total assets at December 31, 2023						4,458,117						53,260						4,511,377						355,715						4,867,092
2022
Operating revenues						$	989,752					$	24,587					$	1,014,339					$	23,014					$	1,037,353
Depreciation						111,871						1,086						112,957						3,750						116,707
Income (loss) from operations						152,839						16,535						169,374						(1,897)						167,477
Net income (loss)						79,690						11,874						91,564						(5,261)						86,303
Capital expenditures						315,979						2,707						318,686						19,916						338,602
Total assets at December 31, 2022						4,392,699						60,019						4,452,718						295,608						4,748,326
2021
Operating revenues						$	816,887					$	26,170					$	843,057					$	17,343					$	860,400
Depreciation						109,475						1,029						110,504						3,030						113,534
Income (loss) from operations						147,902						17,331						165,233						(2,116)						163,117
Net income (loss)						68,988						12,184						81,172						(2,506)						78,666
Capital expenditures						275,267						2,970						278,237						15,655						293,892
Total assets at December 31, 2021						3,846,112						52,260						3,898,372						166,232						4,064,604

The following table presents additional segment information concerning NGD margin:


In thousands			2023						2022						2021
NGD margin calculation:
NGD operating revenues			$	1,117,498					$	970,124					$	797,800
Other regulated services			18,902						19,628						19,087
Total NGD operating revenues			1,136,400						989,752						816,887
Less: NGD cost of gas			500,061						429,861						292,538
Environmental remediation expense			12,899						12,389						9,938
Revenue taxes			48,432						41,627						34,600
NGD margin			$	575,008					$	505,875					$	479,811