Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2016

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Net Periodic Benefit Cost

The components of Dominion's provision for net periodic benefit cost (credit) were as follows:

	Pension Benefits						Other Postretirement Benefits
	2016			2015			2016			2015
(millions)
Three Months Ended March 31,
Service cost	$	29		$	32		$	8		$	10
Interest cost	77			72			17			17
Expected return on plan assets	(139		)	(133		)	(29		)	(29		)
Amortization of prior service credit	—			—			(7		)	(7		)
Amortization of net actuarial loss	28			40			1			1
Net periodic benefit cost (credit)	$	(5	)	$	11		$	(10	)	$	(8	)

Dominion Gas Holdings, LLC

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Net Periodic Benefit Cost

The components of Dominion Gas' provision for net periodic benefit credit for employees represented by collective bargaining units were as follows:

	Pension Benefits						Other Postretirement Benefits
	2016			2015			2016			2015
(millions)
Three Months Ended March 31,
Service cost	$	3		$	3		$	1		$	2
Interest cost	8			7			3			3
Expected return on plan assets	(33		)	(31		)	(5		)	(6		)
Amortization of net actuarial loss	3			5			—			1
Net periodic benefit credit	$	(19	)	$	(16	)	$	(1	)	$	—