Income Taxes (Schedule Of Effective Income Tax Rate) (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory rate	(35.00%)	(35.00%)	35.00%
Non-deductible expenses	0.10%	1.70%	0.50%
Noncontrolling interests	(2.60%)	(8.10%)	(5.30%)
Losses of foreign subsidiaries not benefited	1.30%	6.20%	1.20%
State taxes	0.30%	0.60%	2.30%
Other	0.10%	(2.30%)	0.10%
Effective Income Tax Rate	(35.80%)	(36.90%)	33.80%