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Deferred Income Tax Assets and Liabilities (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Deferred Income Tax Assets And Liabilities [Line Items]    
Employee pensions and other liabilities $ 54 $ 47
Other balance sheet reserves and allowances 27 28
Deferred revenue 4 4
Tax loss and credit carryforwards 41 71
Capitalized research and development 16 28
Total deferred income tax assets 142 178
Valuation allowance (9) 0
Net deferred income tax assets 133 178
Intangibles and capitalized software 123 109
Property and equipment 26 23
Other 5 7
Total deferred income tax liabilities 154 139
Total net deferred income tax assets $ (21) $ 39