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Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Tax Disclosure [Abstract]      
U.S. federal statutory income tax rate 35.00% 35.00% 35.00%
State and local income taxes, net of federal benefit 2.00% 2.00% 2.00%
Effect of foreign operations (2.00%) (2.00%) 0.00%
Nontaxable income attributable to noncontrolling interests (1.00%) (1.00%) 0.00%
Changes in the valuation allowance 1.00% 1.00% 1.00%
Domestic production activity deduction (3.00%) (2.00%) (1.00%)
Tax expense relating to uncertain tax positions, including accrued interest, net of deferred tax benefits 1.00% (1.00%) 2.00%
Other 1.00% 0.00% (1.00%)
Effective income tax rate 34.00% 32.00% 38.00%