Other Financial Information - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Inventory Disclosure [Line Items]
Inventories accounted for under the LIFO method	$ 188,390,000	$ 345,449,000
Decrease amount of inventory that would have been valued using the FIFO method	580,238,000	735,091,000
Increased pretax income from discontinued operation derived from fair value exceeding the LIFO carrying value	296,185,000
Income taxes paid	938,944,000	585,759,000	501,506,000
Interest paid, net of amounts capitalized	38,120,000	35,452,000	21,017,000
Foreign currency translation gains(losses), net of tax	496,161,000	587,408,000
Net gains (losses) from foreign currency transactions	22,131,000	(63,861,000)	48,429,000
Currency, Canadian Dollar
Inventory Disclosure [Line Items]
Foreign currency translation gains(losses), net of tax	464,736,000
Currency, British Pound Sterling
Inventory Disclosure [Line Items]
Foreign currency translation gains(losses), net of tax	37,544,000
Other Foreign Currency Instruments
Inventory Disclosure [Line Items]
Foreign currency translation gains(losses), net of tax	$ (6,119,000)