Preferred Shares - Summary Activity of Convertible Preferred Shares and Non-Convertible Preferred Shares Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015
Convertible Preferred Shares [Member]
Preferred Units [Line Items]
Beginning balance, shares	116,054
Beginning balance, value	$ 116.1
Cumulative preferred dividends, shares	0
Cumulative preferred dividends, value	$ 0.0	$ 0.0
Redemption of preferred shares, shares	(116.1)
Redemption of preferred shares, value	$ (116.1)
Ending balance, shares	0
Non-convertible Preferred Shares [Member]
Preferred Units [Line Items]
Beginning balance, shares	32,711
Beginning balance, value	$ 32.7
Cumulative preferred dividends, shares	0
Cumulative preferred dividends, value	$ 0.0	$ 0.0
Redemption of preferred shares, shares	(32.7)
Redemption of preferred shares, value	$ (32.7)
Ending balance, shares	0