Income Taxes (Deferred Income Tax Assets (Liabilities)) (Details) (USD $)	Dec. 31, 2011		Dec. 31, 2010
Income Taxes [Abstract]
Accrued liabilities	$ 166,469,000	[1]	$ 128,469,000	[2]
Retirement plans and postretirement benefits	53,307,000	[1]	38,324,000	[2]
Share-based compensation	47,482,000	[1]	45,091,000	[2]
Receivables and inventories	20,562,000	[1]	26,218,000	[2]
Derivative instruments	40,359,000	[1]	24,866,000	[2]
Net operating loss carryforwards	30,881,000	[1]	28,902,000	[2]
State and foreign tax credits	10,070,000	[1]	11,143,000	[2]
Other	4,876,000	[1]	3,774,000	[2]
Valuation allowances	(9,176,000)	[1]	(7,660,000)	[2]
Deferred income tax assets	364,830,000	[1]	299,127,000	[2]
Intangible assets	(154,650,000)	[1]	(550,197,000)	[2]
Property, plant and equipment	(370,513,000)	[1]	(342,824,000)	[2]
Investment in unconsolidated affiliates	(22,731,000)	[1]	(21,167,000)	[2]
Deferred income tax liabilities	(547,894,000)	[1]	(914,188,000)	[2]
Net deferred income tax liability	(183,064,000)	[1]	(615,061,000)	[2]
Deferred tax assets related to uncertain tax positions	$ 10,100,000		$ 14,300,000

[1] Includes $10.1 million of deferred tax assets related to uncertain tax positions.

[2] Includes $14.3 million of deferred tax assets related to uncertain tax positions.