Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 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 September 30,
Service cost	$	30		$	32		$	7		$	10
Interest cost	79			71			16			17
Expected return on plan assets	(141		)	(132		)	(28		)	(29		)
Amortization of prior service credit	—			—			(9		)	(7		)
Amortization of net actuarial loss	29			40			2			1
Net periodic benefit cost (credit)	$	(3	)	$	11		$	(12	)	$	(8	)
Nine Months Ended September 30,
Service cost	$	87		$	95		$	23		$	30
Interest cost	234			215			50			50
Expected return on plan assets	(419		)	(398		)	(87		)	(88		)
Amortization of prior service cost (credit)	1			1			(23		)	(20		)
Amortization of net actuarial loss	84			120			5			4
Net periodic benefit cost (credit)	$	(13	)	$	33		$	(32	)	$	(24	)

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 September 30,
Service cost	$	3		$	4		$	1		$	2
Interest cost	7			7			3			3
Expected return on plan assets	(33		)	(31		)	(5		)	(6		)
Amortization of net actuarial loss	3			5			—			1
Net periodic benefit credit	$	(20	)	$	(15	)	$	(1	)	$	—
Nine Months Ended September 30,
Service cost	$	10		$	11		$	4		$	5
Interest cost	22			21			10			10
Expected return on plan assets	(100		)	(94		)	(17		)	(18		)
Amortization of net actuarial loss	10			15			1			2
Net periodic benefit credit	$	(58	)	$	(47	)	$	(2	)	$	(1	)