Summary of Significant Accounting Policies (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Other Liabilities Noncurrent [Abstract]
Post-employment and other benefit/retirement liabilities	$ 35,797	$ 34,044
Insurance Liabilities Non Current	45,509	47,710
Other lease obligations	34,186	29,137
Other Taxes Payable	56,366	49,097
Other	109,120	21,721
Total other long-term liabilities	$ 280,978	$ 181,709