Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating Loss Carryforwards [Line Items]
Income tax expense from surrender of life insurance policy		$ 12,000
Benefit for the correction of tax balances in certain domestic and international tax jurisdictions	$ 5,000	5,000
Benefit for the carryback of net operating losses resulting from the CARES Act		1,646	$ 0	$ 0
Benefit due to regulations enacted into law		(3,000)
Benefit from CARES ACT		2,000
Goodwill impairment charge		2,000
Impairment		198,169	0	0
Change in deferred tax assets valuation allowance		(3,000)	(23,000)
Tax benefits from IRS tax settlements and resolution of U.S. tax examinations			9,000	17,000
Tax on Market Exits		2,000	3,000
Loss on sale of businesses		0	17,683	0
True-ups from Tax Cuts and Jobs Act				37,000
Tax credit carry forwards	64,070	64,070	64,430
Tax credit carry forward without expiration	52,000	$ 52,000
Tax credit carryforwards, expiration period		12 years
Undistributed earnings	288,000	$ 288,000
Amount of unrecognized deferred tax liability	1,000	1,000
Unrecognized tax benefits that would affect the effective tax rate if recognized	$ 44,000	$ 44,000	54,000	$ 65,000
Possible change to unrecognized tax benefits	10.00%	10.00%
Income tax interest and penalties accrued	$ 4,000	$ 4,000	$ 3,000
International Jurisdiction
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	179,000	179,000
Indefinite lived net operating loss carryforwards	157,000	$ 157,000
Operating loss carryforwards, expiration period		20 years
State Jurisdiction
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 1,100,000	$ 1,100,000