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Stock Compensation - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
0 Months Ended 12 Months Ended
Dec. 31, 2013
award
Dec. 31, 2013
award
Dec. 31, 2012
Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Accrual for cash-settled awards $ 5 $ 5 $ 6  
Stock compensation expense   16 19 12
Total fair value of awards vested   10 18 14
Cash received from the exercise of stock options   15 10 11
Cash paid to settle SARs, RSUs and PSUs   4 2 4
Total unrecognized compensation cost related to nonvested awards granted and expected to vest 18 18    
Weighted-average period in which the total unrecognized compensation cost is expected to be recognized 1 year 9 months 18 days      
Stock vesting period (years)   3 years    
Stock maximum term   10 years    
Number of Individual Annual Award 3 3    
Expenses for annual cash incentive awards   $ 47 $ 40 $ 37
Restricted Stock Units (RSUs) [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares issued   0.3    
Performance Share Units [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares issued   0.4    
Omnibus Incentive Plan 2012
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares of common stock available for future grant 5.7 5.7