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Income Taxes (Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate) (Details)
 3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Effective Income Tax Rate Reconciliation, Percent [Abstract]                      
Statutory rate                 35.00% 35.00% 35.00%
State taxes, net of Federal tax benefit                 1.50% 1.00% 2.00%
Foreign tax expense and tax rate differential                 0.50% 1.60% 0.60%
Research and development tax credit                 (0.80%) 0.00% (0.70%)
Domestic Production Activities Deduction                 (0.50%) (0.60%) (0.70%)
Valuation allowance on capital losses and PA loss carryforwards                 (2.40%) (0.30%) 0.00%
Domestic Production Activities Deduction, prior years, net                 0.00% 0.00% (1.50%)
Net change in uncertain tax positions                 0.10% [1] 0.50% [1] 0.40% [1]
Other, net                 0.30% (0.30%) 0.10%
Effective tax rates 35.20% 28.50% 35.50% 34.90% 35.00% 39.00% 36.60% 37.20% 33.70% 36.90% 35.20%
Effective Income Tax Rate Reconciliation, Tax Contingencies, Domestic                 (0.23%) 0.15% 0.25%
Effective Income Tax Rate Reconciliation, Tax Contingencies, State and Local                 0.32% 0.33% 0.14%
Effective Income Tax Rate Reconciliation, Tax Contingencies, Foreign                 0.01% 0.02%  
[1] For 2013, (0.23) percent relates to federal issues mainly associated with compilation of foreign tax credits, 0.32 percent relates to state tax issues and the remaining 0.01 percent relates to foreign tax issues. For 2012, 0.15 percent relates to federal issues, 0.33 percent relates to state tax issues and the remaining 0.02 percent relates to foreign tax issues. For 2011, 0.25 percent relates to federal issues and the remaining 0.14 percent relates to state tax issues.