Income Taxes (Schedule Of Components Of Income Tax Expense) (Benefit) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
Domestic	$ 280,245,000	$ 235,222,000	$ 103,050,000
Foreign	270,378,000	156,881,000	57,223,000
Income before income taxes and equity in net income of unconsolidated investments	550,623,000	392,103,000	160,273,000
Current income tax expense (benefit):
Federal	82,379,000	14,620,000	(23,908,000)
State	4,774,000	5,224,000	772,000
Foreign	28,179,000	25,776,000	14,388,000
Total	115,332,000	45,620,000	(8,748,000)
Deferred income tax expense (benefit):
Federal	1,626,000	57,194,000	29,618,000
State	850,000	(691,000)	1,341,000
Foreign	12,206,000	(9,404,000)	(29,239,000)
Total	14,682,000	47,099,000	1,720,000
Total income tax expense (benefit)	130,014,000	92,719,000	(7,028,000)
Tax benefit from an NOL carryforward		$ 9,600,000