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Stock-Based Compensation - Stock Options Outstanding Roll Forward (Detail) - Equity Option [Member] - $ / shares shares in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at December 31, 2018	1,790
Granted	136	133
Exercised	(239)
Outstanding at March 30, 2019	1,687
Weighted-average exercise price of options outstanding at beginning of period	$ 142.47
Weighted-average exercise price of options granted	232.08	$ 206.66
Weighted-average exercise price of options exercised	108.57
Weighted-average exercise price of options outstanding at end of period	154.42
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average exercise price of options outstanding at beginning of period	38.09
Weighted-average exercise price of options granted	183.41
Weighted-average exercise price of options exercised	38.09
Weighted-average exercise price of options outstanding at end of period	61.63
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average exercise price of options outstanding at beginning of period	208.47
Weighted-average exercise price of options granted	238.52
Weighted-average exercise price of options exercised	208.47
Weighted-average exercise price of options outstanding at end of period	$ 238.52

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Gross number of share options (or share units) granted during the period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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