Supplemental Balance Sheet Income Statement and Cash Flow Information (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Accrued liabilities
Accrued compensation	$ 173,732	$ 116,680
Deferred revenue	172,578	88,389
Other taxes payable	44,652	25,227
Workers' compensation liabilities	22,645	31,944
Interest payable	99,869	89,276
Due to joint venture partners	6,041	6,030
Warranty accrual	5,237	3,376
Litigation reserves	23,687	12,301
Provision for termination payment	100,000	0
Current liability of discontinued operations	54,287	0
Professional fees	6,413	3,222
Current deferred tax liability	(269)	(1,027)
Other accrued liabilities	7,363	16,820
Accrued liabilities	$ 716,773	$ 394,292