Income Taxes Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Taxes [Abstract]

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

Income tax expense consists of the following (in millions):

	Years Ended December 31,
	2016		2015		2014
Current:
Federal	$	10	$	4	$	20
State and local	3		1		2
	13		5		22
Deferred:
Federal	23		26		26
State and local	14		14		13
	37		40		39
Income tax expense	$	50	$	45	$	61

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

The significant differences between the U.S. federal statutory rate and PGE’s effective tax rate for financial reporting purposes are as follows:

	Years Ended December 31,
	2016		2015		2014
Federal statutory tax rate	35.0	%	35.0	%	35.0	%
Federal tax credits *	(18.2	)	(19.0	)	(11.4	)
State and local taxes, net of federal tax benefit	4.8		4.2		3.9
Flow through depreciation and cost basis differences	0.2		—		(2.3	)
Other	(1.2	)	0.5		0.8
Effective tax rate	20.6	%	20.7	%	26.0	%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

Deferred income tax assets and liabilities consist of the following (in millions):

	As of December 31,
	2016			2015
Deferred income tax assets:
Employee benefits	$	181		$	170
Price risk management	59			112
Regulatory liabilities	29			42
Tax credits	56			46
Other	5			—
Total deferred income tax assets	330			370
Deferred income tax liabilities:
Depreciation and amortization	829			781
Regulatory assets	170			220
Other	—			1
Total deferred income tax liabilities	999			1,002
Deferred income tax liability, net	$	(669	)	$	(632	)