Employee Benefit Plans (Components Of Pension Expense) (Details) (Defined Benefit Pension, USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Defined Benefit Pension
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 3,381	$ 4,222
Interest cost	6,556	5,895
Expected return on assets	(7,812)	(6,931)
Amortization of prior service cost	53	53
Amortization of net actuarial loss	1,546	4,251
Total pension expense	$ 3,724	$ 7,490