Retirement Plans (Tables)

9 Months Ended

Sep. 30, 2013

Retirement Plans [Abstract]

Net Periodic Benefit Cost

	Pension Benefits				Pension Benefits
	For the three months ended				For the nine months ended
	September 30,				September  30,
	2013		2012		2013		2012
($ in thousands)
Components of net periodic pension benefit cost
Service cost	$	12,141	$	11,782	$	37,809	$	32,766
Interest cost on projected benefit obligation		18,827		19,204		56,587		58,520
Expected return on plan assets		(23,585)		(23,655)		(72,765)		(71,832)
Amortization of prior service cost /(credit)		2		(50)		6		(150)
Amortization of unrecognized loss		10,798		6,845		30,942		22,418
Net periodic pension benefit cost		18,183		14,126		52,579		41,722
Pension settlement costs		40,309		-		40,309		-
Total periodic pension benefit cost	$	58,492	$	14,126	$	92,888	$	41,722

	Postretirement Benefits				Postretirement Benefits
	Other Than Pensions (OPEB)				Other Than Pensions (OPEB)
	For the three months ended				For the nine months ended
	September  30,				September  30,
	2013		2012		2013		2012
($ in thousands)
Components of net periodic postretirement benefit cost
Service cost	$	3,088	$	2,999	$	9,446	$	8,109
Interest cost on projected benefit obligation		4,181		4,462		13,061		13,382
Expected return on plan assets		(25)		(20)		(111)		(130)
Amortization of prior service cost/(credit)		(1,526)		(2,545)		(4,576)		(7,551)
Amortization of unrecognized loss		1,695		1,831		6,151		5,653
Net periodic postretirement benefit cost	$	7,413	$	6,727	$	23,971	$	19,463