Employee Benefit Plans (Schedule Of Changes In Net Periodic Cost Benefit) (Detail)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Discount rate	4.60%	4.88%	5.48%
Expected return on plan assets	5.91%	6.00%	6.86%