Capital Stock - Schedule of Options Exercised in Exchange for Issuance of Shares of Common Stock (Detail) - shares	12 Months Ended
Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Equity [Abstract]
Options exercised	2,824,460	1,863,059	565,568

Number of share options (or share units) exercised during the current period.

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Name:	us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration