Income Taxes (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended				3 Months Ended		12 Months Ended			3 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2012 Reduction in the Provision for Income Taxes [Member]	Dec. 31, 2011 Reduction in the Provision for Income Taxes [Member]	Dec. 31, 2012 Reduction in the Provision for Income Taxes [Member]	Dec. 31, 2011 Reduction in the Provision for Income Taxes [Member]	Dec. 31, 2010 Reduction in the Provision for Income Taxes [Member]	Dec. 31, 2012 Reduction in Interest Expense [Member]	Dec. 31, 2012 Reduction in Interest Expense [Member]	Dec. 31, 2010 Reduction in Interest Expense [Member]	Dec. 31, 2012 International [Member]
Income Tax Contingency [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	35.00%
Non-cash impact of tax matters	$ 0	$ 0	$ (11,716)			$ 28,928		$ 28,928	$ 9,404			$ 3,840
Tax Adjustments Settlements And Unusual Provisions, Net of Tax												2,312
Tax Adjustments, Settlements, and Unusual Provisions, Per Share Basic and Diluted								$ 0.25	$ 0.08			$ 0.02
Unrecognized Tax Benefits	46,980	63,498	66,110	68,833
Unrecognized Tax Benefits Expected to be Paid	1,000
Unrecognized Tax Benefits, Interest on Income Taxes Expense	18	2,068	(1,599)
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	10,599	13,411
Tax Credit Carryforward, Amount													226,283
Tax Credit Carryforward, Subject to Expiration													54,108
Tax Credit Carryforward, No Expiration													172,175
Tax Credit Carryforward, Deferred Tax Asset													65,128
Other Tax Carryforward, Valuation Allowance													18,370
Operating Loss Carryforwards	79,596
Utilization of Net Operating Loss Carryforward	72,155
Deferred Tax Liabilities, Undistributed Foreign Earnings	2,716,769
Income Taxes Paid, Net	$ 179,408	$ 236,872	$ 125,903