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Stock-Based Compensation - Stock Options Outstanding Roll Forward (Detail) - Equity Option [Member] - $ / shares shares in Thousands	9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at December 31, 2017	2,039
Granted	147	217
Exercised	(357)
Canceled	(137)
Outstanding at September 29, 2018	1,692
Weighted-average exercise price of options outstanding at beginning of period	$ 124.41
Weighted-average exercise price of options granted	205.37	$ 151.24
Weighted-average exercise price of options exercised	102.44
Weighted average exercise price of options canceled	126.13
Weighted-average exercise price of options outstanding at end of period	135.94
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	188.26
Weighted-average exercise price of options exercised	38.09
Weighted average exercise price of options canceled	98.21
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	194.26
Weighted-average exercise price of options granted	208.47
Weighted-average exercise price of options exercised	154.33
Weighted average exercise price of options canceled	154.33
Weighted-average exercise price of options outstanding at end of period	$ 208.47

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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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