XML 38 R42.htm IDEA: XBRL DOCUMENT v2.4.0.6
Income Tax Expense (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Schedule Of Income Tax [Line Items]      
Federal - Current $ 50 $ 26 $ 53
State and local - Current 9 3 5
Foreign - Current 23 29 14
Federal - Deferred 72 64 35
State and local - Deferred 7 8 4
Foreign - Deferred (2) (2) 2
Total income tax expense $ 159 $ 128 $ 113