Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation - Additional Information (Detail)

v2.4.0.6
Stock-based Compensation - Additional Information (Detail) (USD $)
9 Months Ended
Sep. 29, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options granted in period 870,195
Weighted average exercise price of options granted $ 145.64
Vesting period 3 years
Expected volatility, minimum 27.00%
Expected volatility, maximum 31.00%
Weighted average, expected volatility 30.00%
Expected dividend yield 2.50%
Risk-free interest rate, at ten years 2.10%
Risk-free interest rate, at six months 0.10%
Weighted average fair value of options granted $ 33.44
Performance based period 3 years
Performance based adjustment 25.00%
Minimum
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected term 5 years 7 months 6 days
Performance based adjustment 0.00%
Maximum
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected term 7 years 6 months
Restricted Stock Units | Performance-Based
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Restricted stock units granted in period 195,290
Share based compensation vesting period 3 years
Fair value of restricted stock units at grant date $ 145.47
Restricted Stock Units | Minimum | Performance-Based
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of possible awards 0.00%
Restricted Stock Units | Maximum | Performance-Based
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of possible awards 200.00%
Restricted Stock
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Restricted stock units granted in period 12,500
Fair value of restricted stock units at grant date $ 140.54
Restricted Stock | Minimum
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Restricted stock units vesting period 3 years
Restricted Stock | Maximum
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Restricted stock units vesting period 4 years
Board Of Director Grants
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock options granted period of time options become exercisable 1 year
Board of Directors | Restricted Stock Units
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Fair value of restricted stock units at grant date $ 145.58
Board of Directors | Restricted Stock Units | Nonperformance Based
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Restricted stock units granted in period 4,345
Employees | Restricted Stock Units
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Fair value of restricted stock units at grant date $ 139.57
Restricted stock units vesting period 4 years
Employees | Restricted Stock Units | Nonperformance Based
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Restricted stock units granted in period 6,000