Long-term Debt Long term debt (Tables)

12 Months Ended

Dec. 31, 2011

Long-term Debt, Unclassified [Abstract]

Schedule of Long-term Debt Instruments [Table Text Block]

Long-term debt consists of the following (in millions):

	As of December 31,
	2011			2010
First Mortgage Bonds, rates range from 3.46% to 9.31%, with a weighted average rate of 5.83% in 2011 and 5.85% in 2010, due at various dates through 2040	$	1,615		$	1,678
Pollution Control Revenue Bonds:
Port of Morrow, Oregon, 5% rate, due 2033	23			23
City of Forsyth, Montana, 5% rate, due 2033	119			119
Port of St. Helens, Oregon, 5.25% rate, due in 2014	—			10
Total Pollution Control Revenue Bonds	142			152
Pollution Control Revenue Bonds owned by PGE	(21		)	(21		)
Unamortized debt discount	(1		)	(1		)
Total long-term debt	1,735			1,808
Less: current portion of long-term debt	(100		)	(10		)
Long-term debt, net of current portion	$	1,635		$	1,798

Schedule of Maturities of Long-term Debt [Table Text Block]

As of December 31, 2011, the future minimum principal payments on long-term debt are as follows (in millions):

Years ending December 31:
2012	$	100
2013	100
2014	—
2015	70
2016	67
Thereafter	1,398
	$	1,735