Income Taxes (Details) (USD $)	3 Months Ended
	Mar. 31, 2013 Rate	Mar. 31, 2012 Rate	Dec. 31, 2012
Income Taxes [Line Items]
Unrecognized Tax Benefits	$ 53,100,000		$ 53,400,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	29,900,000		28,100,000
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Upper Bound	11,700,000
Unrecognized Tax Benefits, Interest on Income Taxes Accrued			24,600,000
Unrecognized Tax Benefits, Income Tax Penalties Accrued			12,000,000
Unrecognized Tax Benefits, Additional Interest Accrued	1,400,000
Unrecognized Tax Benefits, Additional Penalties Accrued	100,000
Income Tax Sharing Agreement With Parent - Maximum Amount	1,000,000,000
Intercompany Taxes Payable	$ 594,806,000		$ 558,622,000
Effective Income Tax Rate, Continuing Operations	37.60%	38.10%