Segment Information (Details 3) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Operating income (loss)
Margin improvement (reduction) from intra-company sales	$ 276,386,000	$ 191,984,000	$ 572,140,000	$ 402,466,000
Assets elimination
Elimination of intra-company receivables	849,401,000		849,401,000		622,189,000
Other	132,178,000		132,178,000		135,683,000
Total	5,900,453,000	5,545,805,000	5,900,453,000	5,545,805,000	5,589,934,000
Liabilities elimination
Elimination of intra-company payables	455,859,000		455,859,000		348,601,000
Total	3,588,965,000	3,448,206,000	3,588,965,000	3,448,206,000
Eliminations
Operating income (loss)
Margin improvement (reduction) from intra-company sales	(2,577,000)	83,000	(2,557,000)	(1,037,000)
Assets elimination
Elimination of intra-company receivables	(42,300,000)	(29,600,000)	(42,300,000)	(29,600,000)
Elimination of intra-company debt	153,700,000	224,800,000	153,700,000	224,800,000
Other	(15,000,000)	(9,500,000)	(15,000,000)	(9,500,000)
Total	(210,989,000)	(263,930,000)	(210,989,000)	(263,930,000)
Liabilities elimination
Elimination of intra-company payables	(43,800,000)	(30,100,000)	(43,800,000)	(30,100,000)
Elimination of intra-company debt	(153,700,000)	(224,800,000)	(153,700,000)	(224,800,000)
Other liabilities	(1,600,000)	(2,200,000)	(1,600,000)	(2,200,000)
Total	$ (199,098,000)	$ (257,076,000)	$ (199,098,000)	$ (257,076,000)