Pension and OPEB - Periodic Cost (Tables)

9 Months Ended

Sep. 30, 2014

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS NET PERIODIC BENEFIT COSTS: [Abstract]

Components of Net Periodic Costs

Components of net periodic costs (benefits) for the three and nine months ended September 30 are as follows:

	Pension Benefits												Other Post-Employment Benefits
	Three Months Ended						Nine Months Ended						Three Months Ended						Nine Months Ended
	September 30,						September 30,						September 30,						September 30,
	2014			2013			2014			2013			2014			2013			2014			2013
Service cost	$	4,834		$	4,897		$	13,625		$	16,184		$	2,331		$	4,849		$	6,994		$	14,547
Interest cost	8,667			9,497			26,812			27,249			12,096			29,619			36,290			88,856
Expected return on plan assets	(12,829		)	(13,336		)	(38,342		)	(38,191		)	—			—			—			—
Amortization of prior service credits	(346		)	(408		)	(1,038		)	(1,223		)	(2,196		)	(7,804		)	(6,588		)	(23,411		)
Recognized net actuarial loss	6,444			8,042			18,441			30,764			6,369			17,595			19,106			52,784
Settlement loss	4,785			6,296			25,492			38,498			—			—			—			—
Curtailment gain	(549		)	—			(549		)	—			(35,633		)	—			(35,633		)	—
Net periodic cost (benefit)	$	11,006		$	14,988		$	44,441		$	73,281		$	(17,033	)	$	44,259		$	20,169		$	132,776