Consolidated Statements of Operations (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Operating revenue	$ 4,586	$ 4,432	$ 4,457
Operating costs and expenses:
Energy costs	1,636	1,618	1,677
Operations and maintenance	1,103	1,081	1,035
Depreciation and amortization	611	561	549
Taxes, other than income taxes	152	136	136
Total operating costs and expenses	3,502	3,396	3,397
Operating income	1,084	1,036	1,060
Other income (expense):
Interest expense	(392)	(387)	(394)
Allowance for borrowed funds	25	45	35
Allowance for equity funds	47	79	64
Interest income	5	5	19
Other, net	(1)	(1)	0
Total other income (expense)	(316)	(259)	(276)
Income before income tax expense	768	777	784
Income tax expense	213	211	234
Net income	555	566	550
Net income attributable to noncontrolling interest	0	0	8
Net income attributable to PacifiCorp	$ 555	$ 566	$ 542