Pension and Other Postretirement Employee Benefits (OPEB) Plans (Tables)

6 Months Ended

Jun. 30, 2015

Pension And Other Postretirement Employee Benefits (OPEB) Plans [Abstract]

Schedule Of Pension And OPEB Plan Costs

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Components of net allocated pension costs:
Service cost	$	6	$	6	$	12	$	12
Interest cost		33		33		66		66
Expected return on assets		(29)		(34)		(58)		(68)
Amortization of net loss		16		10		32		20
Net pension costs		26		15		52		30
Components of net OPEB costs:
Service cost		2		1		4		3
Interest cost		11		11		22		22
Expected return on assets		(3)		(3)		(6)		(6)
Amortization of prior service cost		(5)		(5)		(10)		(10)
Amortization of net loss		8		6		16		12
Net OPEB costs		13		10		26		21
Total net pension and OPEB costs		39		25		78		51
Less amounts deferred principally as property or a regulatory asset		(28)		(16)		(56)		(33)
Net amounts recognized as expense	$	11	$	9	$	22	$	18