Segment Information - Geographic Segment Information (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net revenue $ 2,076 $ 2,002 $ 2,035
Long-Lived Assets (excluding financial instruments and deferred tax assets) 2,609 2,715 2,910
United States [Member]
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net revenue 772 795 873
Long-Lived Assets (excluding financial instruments and deferred tax assets) 1,478 1,630 1,753
United Kingdom [Member]
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net revenue 162 155 152
Long-Lived Assets (excluding financial instruments and deferred tax assets) 39 31 42
All Other Countries [Member]
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net revenue 1,142 1,052 1,010
Long-Lived Assets (excluding financial instruments and deferred tax assets) $ 1,092 $ 1,054 $ 1,115