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Capital Stock - Summary of Information Concerning Currently Outstanding and Exercisable Options (Detail)
12 Months Ended
Dec. 28, 2019
$ / shares
shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Number Outstanding | shares 181,712
Weighted Average Remaining Contractual Life (Years) 3 years 9 months 18 days
Weighted Average Exercise Price $ 70.78
Number Exercisable | shares 63,432
Options Exercisable, Weighted Average Exercise Price $ 62.39
Range One [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Option Price per share, Minimum 41.59
Option Price per share, Maximum $ 61.13
Number Outstanding | shares 38,848
Weighted Average Remaining Contractual Life (Years) 1 year 3 months 18 days
Weighted Average Exercise Price $ 45.94
Number Exercisable | shares 29,136
Options Exercisable, Weighted Average Exercise Price $ 45.94
Range Two [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Option Price per share, Minimum 61.14
Option Price per share, Maximum $ 73.13
Number Outstanding | shares 52,413
Weighted Average Remaining Contractual Life (Years) 3 years 10 months 24 days
Weighted Average Exercise Price $ 71.89
Number Exercisable | shares 13,762
Options Exercisable, Weighted Average Exercise Price $ 71.68
Range Three [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Option Price per share, Minimum 73.14
Option Price per share, Maximum $ 78.70
Number Outstanding | shares 24,654
Weighted Average Remaining Contractual Life (Years) 3 years 4 months 24 days
Weighted Average Exercise Price $ 77.60
Number Exercisable | shares 9,650
Options Exercisable, Weighted Average Exercise Price $ 78.64
Range Four [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Option Price per share, Minimum 78.71
Option Price per share, Maximum $ 82.31
Number Outstanding | shares 35,803
Weighted Average Remaining Contractual Life (Years) 5 years 2 months 12 days
Weighted Average Exercise Price $ 80.65
Number Exercisable | shares 6,871
Options Exercisable, Weighted Average Exercise Price $ 78.76
Range Five [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Option Price per share, Minimum 82.32
Option Price per share, Maximum $ 84.93
Number Outstanding | shares 29,994
Weighted Average Remaining Contractual Life (Years) 5 years 7 months 6 days
Weighted Average Exercise Price $ 83.66
Number Exercisable | shares 4,013
Options Exercisable, Weighted Average Exercise Price $ 82.83