Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2011

Benefit Plans [Abstract]

Components of net periodic benefit cost

PENSION BENEFITS	Three Months Ended						Six Months Ended
	June 30						June 30
in thousands	2011			2010			2011			2010
Components of Net Periodic Benefit Cost
Service cost		$5,191			$4,800			$10,381			$9,608
Interest cost		10,650			10,406			21,192			20,811
Expected return on plan assets		(12,370	)		(12,526	)		(24,740	)		(25,061	)
Amortization of prior service cost		85			115			170			230
Amortization of actuarial loss		3,011			1,540			5,835			2,876
Net periodic pension benefit cost		$6,567			$4,335			$12,838			$8,464
Pretax reclassification from OCI included in net periodic pension benefit cost		$3,096			$1,655			$6,005			$3,106

OTHER POSTRETIREMENT BENEFITS	Three Months Ended						Six Months Ended
	June 30						June 30
in thousands	2011			2010			2011			2010
Components of Net Periodic Benefit Cost
Service cost		$1,198			$1,067			$2,395			$2,133
Interest cost		1,612			1,662			3,225			3,325
Amortization of prior service credit		(168	)		(182	)		(337	)		(364	)
Amortization of actuarial loss		287			222			574			444
Net periodic postretirement benefit cost		$2,929			$2,769			$5,857			$5,538
Pretax reclassification from OCI included in net periodic postretirement benefit cost		$119			$40			$237			$80