Employee Benefit Plans (Components Of Pension Expense) (Details) (Defined Benefit Pension, USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Defined Benefit Pension
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 2,785	$ 4,261	$ 6,166	$ 8,483
Interest cost	6,251	6,409	12,807	12,304
Expected return on assets	(8,340)	(7,474)	(16,152)	(14,405)
Amortization of prior service cost	52	53	105	105
Amortization of net actuarial loss	1,546	4,241	3,092	8,493
Total pension expense	$ 2,294	$ 7,490	$ 6,018	$ 14,980