Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Loss Carryforwards [Line Items]
Change in deferred tax assets valuation allowance	$ (23,000)
Tax benefits from IRS tax settlements and resolution of U.S. tax examinations	9,000	$ 17,000	$ 30,000
Tax on Market Exits	3,000
Loss on sale of businesses	17,683	0	0
Income tax benefit from Tax Act		37,000	39,000
U.S. tax on unremitted earnings	0	(23,711)	90,916
Net operating loss carryforwards	162,000
Indefinite lived net operating loss carryforwards	$ 145,000
Operating loss carryforwards, expiration period	20 years
Tax credit carry forwards	$ 64,430	64,148
Tax credit carry forward without expiration	52,000
Foreign earnings reinvested	421,000
Undistributed earnings	261,000
Unrecognized tax benefits that would affect the effective tax rate if recognized	$ 54,000	65,000	74,000
Possible change to unrecognized tax benefits	15.00%
Interest and penalties	$ (1,000)	(1,000)	$ (4,000)
Income tax interest and penalties accrued	3,000	$ 4,000
Amount of unrecognized deferred tax liability	$ 3,000
Maximum
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards, expiration period	13 years