Employee Benefit Plans (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Employee Benefit Plans (Textuals) [Abstract]
Contribution to pension plans			$ 24,100,000
Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year	66,000,000		66,000,000
Pension Benefits [Member]
Amortization of:
Net periodic benefit cost	9,971,000	12,123,000	20,592,000	24,568,000
Postretirement Benefits [Member]
Amortization of:
Net periodic benefit cost	560,000	638,000	1,158,000	1,411,000
Company Administered Plan [Member] | Pension Benefits [Member]
Components of net periodic benefit cost
Service cost	3,756,000	3,826,000	8,008,000	7,733,000
Interest Cost	22,316,000	23,563,000	44,735,000	47,252,000
Expected Return on Plan Assets	26,389,000	24,055,000	52,837,000	48,112,000
Amortization of:
Net actuarial loss (gain)	8,685,000	7,726,000	17,565,000	15,587,000
Prior service credit	(443,000)	(567,000)	(909,000)	(1,136,000)
Net periodic benefit cost	7,925,000	10,493,000	16,562,000	21,324,000
Company Administered Plan [Member] | Pension Benefits U.S. [Member]
Amortization of:
Net periodic benefit cost	8,152,000	9,643,000	16,893,000	19,491,000
Company Administered Plan [Member] | Pension Benefits Non-U.S. [Member]
Amortization of:
Net periodic benefit cost	(227,000)	850,000	(331,000)	1,833,000
Company Administered Plan [Member] | Postretirement Benefits [Member]
Components of net periodic benefit cost
Service cost	230,000	227,000	493,000	547,000
Interest Cost	392,000	475,000	787,000	989,000
Amortization of:
Net actuarial loss (gain)	(5,000)	(7,000)	(7,000)	(10,000)
Prior service credit	(57,000)	(57,000)	(115,000)	(115,000)
Net periodic benefit cost	560,000	638,000	1,158,000	1,411,000
Company Administered Plan [Member] | Postretirement Benefits U.S [Member]
Amortization of:
Net periodic benefit cost	402,000	519,000	808,000	1,071,000
Company Administered Plan [Member] | Postretirement Benefits Non-U.S [Member]
Amortization of:
Net periodic benefit cost	158,000	119,000	350,000	340,000
Union Administered Plan [Member] | Pension Benefits [Member]
Amortization of:
Net periodic benefit cost	$ 2,046,000	$ 1,630,000	$ 4,030,000	$ 3,244,000