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Open Market Share Repurchase Program - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 17, 2018	Jun. 18, 2017	Jun. 17, 2018	Jun. 18, 2017
Equity [Abstract]
Common stock repurchased and retired (in shares)	905,556	0	1,353,564	80,360
Payments for purchases of common stock	$ 219,000		$ 320,067	$ 12,721
Common stock repurchased and retired during period, average price	$ 241.82		$ 236.46	$ 158.30
Stock repurchase remaining authorized repurchase amount	$ 429,900		$ 429,900

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The cash outflow to reacquire common stock during the period.

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-Topic 230
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Number of shares that have been repurchased and retired during the period.

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