Income Taxes Income Taxes Details 6 (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning Balance	$ 182,545	$ 191,680	$ 177,830
Reductions to tax positions related to the current year			(1,075)
Additions to tax positions related to prior years			10,085
Reductions to tax positions related to prior years			(2,325)
Reductions to tax positions related to the acquisition offset to goodwill			(1,556)
Additions to tax positions related to the current year		3,235	8,721
Reductions to tax positions related to prior years	(4,219)	(12,370)
Ending Balance	178,326	182,545	191,680
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	161,800	157,200	154,800
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	57,300	51,600	47,600
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	$ 5,700	$ 4,000	$ 3,100