Employee Benefits Plans (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Pension Expense [Member]
Amortization of:
Net pension expense	$ 49,413	$ 34,347	$ 41,659
Company Administered Plan [Member] | Pension Expense [Member]
Pension expense from continuing operations
Service cost	15,479	14,719	15,239
Interest Cost	94,605	97,526	96,125
Expected Return on Plan Assets	(96,342)	(101,803)	(93,135)
Settlement/curtailment loss	0	0	1,487
Amortization of:
Transition obligation	0	31	25
Net actuarial loss	31,200	20,226	19,025
Prior service credit	(2,275)	(2,278)	(2,256)
Net pension expense	42,667	28,359	36,460
Company Administered Plan [Member] | Pension Expense U.S. [Member]
Amortization of:
Net pension expense	38,992	28,974	33,733
Company Administered Plan [Member] | Pension Expense Foreign [Member]
Amortization of:
Net pension expense	3,675	(615)	2,727
Union Administered Plan [Member] | Pension Expense [Member]
Amortization of:
Net pension expense	$ 6,746	$ 5,988	$ 5,199