Pension and OPEB - Periodic Cost (Tables)

6 Months Ended

Jun. 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 six months ended June 30 are as follows:

	Pension Benefits												Other Post-Employment Benefits
	Three Months Ended						Six Months Ended						Three Months Ended						Six Months Ended
	June 30,						June 30,						June 30,						June 30,
	2014			2013			2014			2013			2014			2013			2014			2013
Service cost	$	4,483		$	5,581		$	8,791		$	11,287		$	2,331		$	4,849		$	4,663		$	9,698
Interest cost	8,993			8,909			18,144			17,752			12,097			29,619			24,194			59,237
Expected return on plan assets	(12,765		)	(12,711		)	(25,512		)	(24,855		)	—			—			—			—
Amortization of prior service credits	(346		)	(407		)	(692		)	(815		)	(2,196		)	(7,804		)	(4,392		)	(15,608		)
Recognized net actuarial loss	6,106			10,547			11,997			22,722			6,369			17,595			12,737			35,190
Settlement loss	20,707			5,087			20,707			32,202			—			—			—			—
Net periodic benefit cost	$	27,178		$	17,006		$	33,435		$	58,293		$	18,601		$	44,259		$	37,202		$	88,517