Income Taxes (Deferred Income Taxes Components) (Details 4) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Deferred Income Tax Liabilities [Line Items]
Accrued postretirement benefits	$ 15,408,000	$ 25,287,000
Other benefit obligations	101,923,000	123,306,000
Accounts receivable	24,911,000	31,073,000
State income tax loss carryforwards	30,036,000	34,578,000
U.S. Federal income tax loss carryforwards	2,613,000	2,857,000
U.S. Federal capital loss carryforwards	0	10,837,000
U.S Federal foreign income tax credit carryforwards	8,265,000	6,781,000
Non-U.S. income tax loss carryforwards	32,600,000	27,039,000
Other	61,753,000	58,133,000
Deferred tax assets	277,509,000	319,891,000
Valuation allowance	(72,767,000)	(78,109,000)
Deferred tax assets, net	204,742,000	241,782,000
Property, plant and equipment	134,627,000	175,025,000
Unrealized gain on available-for-sale securities	115,785,000	73,712,000
Goodwill and other intangible assets	293,749,000	276,652,000
Deferred tax liabilities	1,041,888,000	767,235,000
Deferred Income Tax Liabilities, Net	837,146,000	525,453,000
Pension Plan, Defined Benefit [Member]
Deferred Income Tax Liabilities [Line Items]
Prepaid pension cost	$ 497,727,000	$ 241,846,000