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Income Taxes (Components Of Income Tax Expense (Benefit)) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Tax Disclosure [Abstract]      
Federal, Current $ 220,588 $ 202,095 $ 164,125
State, Current 29,073 27,586 28,669
Foreign, Current 7,487 8,476 8,683
Current Income Tax Expense (Benefit), Total 257,148 238,157 201,477
Federal, Deferred 8,547 14,742 17,343
State, Deferred 527 981 (244)
Foreign, Deferred (1,390) (261) (1,424)
Deferred Income Tax Expense (Benefit), Total 7,684 15,462 15,675
Federal, Total 229,135 216,837 181,468
State, Total 29,600 28,567 28,425
Foreign, Total 6,097 8,215 7,259
Total income tax expense $ 264,832 $ 253,619 $ 217,152