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Restructuring Activities - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
2013 Earnings Quality Improvement Program [Member]
        
Restructuring Cost and Reserve [Line Items]        
Expected completed date of restructuring program     Dec. 31, 2015  
Expected cash payments in 2013 $ 65   $ 65  
Restructuring expected accrual to pay 13   13  
Restructuring expected accrual remaining to pay 2   2  
2013 Earnings Quality Improvement Program [Member] | Minimum [Member]
        
Restructuring Cost and Reserve [Line Items]        
Reduction in headcount, employees 400   400  
Expected associated cost related to restructuring     180  
Other costs     5  
Capital expenditure related to restructuring and associated activities     55  
2013 Earnings Quality Improvement Program [Member] | Minimum [Member] | Severance and termination benefits [Member]
        
Restructuring Cost and Reserve [Line Items]        
Expected associated cost related to restructuring     90  
2013 Earnings Quality Improvement Program [Member] | Minimum [Member] | Facility relocation and closures [Member]
        
Restructuring Cost and Reserve [Line Items]        
Expected associated cost related to restructuring     85  
2013 Earnings Quality Improvement Program [Member] | Maximum [Member]
        
Restructuring Cost and Reserve [Line Items]        
Reduction in headcount, employees 500   500  
Expected associated cost related to restructuring     200  
Other costs     10  
Capital expenditure related to restructuring and associated activities     70  
2013 Earnings Quality Improvement Program [Member] | Maximum [Member] | Severance and termination benefits [Member]
        
Restructuring Cost and Reserve [Line Items]        
Expected associated cost related to restructuring     95  
2013 Earnings Quality Improvement Program [Member] | Maximum [Member] | Facility relocation and closures [Member]
        
Restructuring Cost and Reserve [Line Items]        
Expected associated cost related to restructuring     95  
2011-2014 Integration and Optimization Program [Member]
        
Restructuring Cost and Reserve [Line Items]        
Expected completed date of restructuring program     Dec. 31, 2014  
Restructuring expected accrual to pay 43   43  
Restructuring expected accrual remaining to pay 6   6  
Asset impairment charges       5
Cumulative cash payments 143   143  
2011-2014 Integration and Optimization Program [Member] | Stock Appreciation Rights (SARs) [Member]
        
Restructuring Cost and Reserve [Line Items]        
Amount of stock appreciation rights that were issued $ 1 $ 1 $ 1 $ 8