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Stock-Based Compensation - Stock Options Outstanding Roll Forward (Detail) - Equity Option [Member] - $ / shares shares in Thousands	9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at December 31, 2018	1,790
Granted	139	147
Exercised	(256)
Canceled	(74)
Outstanding at September 28, 2019	1,599
Weighted-average exercise price of options outstanding at beginning of period	$ 142.47
Weighted-average exercise price of options granted	231.30	$ 205.37
Weighted-average exercise price of options exercised	111.11
Weighted average exercise price of options canceled	159.17
Weighted-average exercise price of options outstanding at end of period	154.44
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 canceled	113.36
Weighted-average exercise price of options outstanding at end of period	38.09
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 canceled	238.52
Weighted-average exercise price of options outstanding at end of period	$ 238.52

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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-Name Accounting Standards Codification
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-SubTopic 10
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Weighted average price of options that were either forfeited or expired.

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

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Number of options outstanding, including both vested and non-vested options.

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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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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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