v2.4.0.6
Income Taxes, Components of Income Tax Expense (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Current Income Tax Expense (Benefit) [Abstract]      
Federal $ 9,141 $ 3,352 $ 1,425
State and Local 1,198 468 548
Foreign 61 52 78
Total current 10,400 3,872 2,051
Deferred Income Tax Expense (Benefit) [Abstract]      
Federal (1,151) 3,088 4,060
State and Local (166) 471 211
Foreign 20 14 16
Total deferred (1,297) 3,573 4,287
Income tax expense $ 9,103 $ 7,445 $ 6,338