Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Contingency [Line Items]
Tax benefits from IRS tax settlements and resolution of U.S. tax examinations	$ 20,000	$ 22,000
Tax benefits from the retroactive effect of 2014 U.S. tax legislation	$ 3,000	$ 5,000
Tax benefits from an affiliate reorganization			$ 13,000
Tax benefits from tax planning initiatives			17,000
Tax benefits from the adjustment of non-U.S. tax accounts from prior periods			$ 5,000
U.S. statutory rate	35.00%	35.00%	35.00%
Net operating loss carryforwards	$ 310,000
Indefinite lived net operating loss carryforwards	251,000
Tax credit carry forwards	54,183	$ 47,493
Tax credit carry forward without expiration	39,000
Income taxes on cumulative undistributed earnings of foreign subsidiaries	860,000
Withholding taxes on undistributed earnings of foreign subsidiaries	13,000
Unrecognized tax benefits that would affect the effective tax rate if recognized	117,000	109,000	$ 148,000
Recorded income tax interest and penalties	(4,000)	2,000	$ 27,000
Income tax interest and penalties accrued	$ 10,000	$ 11,000
Maximum
Income Tax Contingency [Line Items]
Possible change to unrecognized tax benefits	15.00%