v2.4.0.6
Provision for Income Taxes - Classification of Deferred Tax Assets and Liabilities in Consolidated Balance Sheets (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Income Tax Disclosure [Line Items]    
Deferred tax assets within current assets $ 12 $ 5
Deferred tax assets within other non-current assets 22 19
Deferred tax liabilities within accrued liabilities (4) (1)
Deferred tax liabilities within other non-current liabilities (84) (91)
Net deferred tax assets (liabilities) $ (54) $ (68)