Schedule II - Valuation and Qualifying Accounts (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 30, 2017	Dec. 31, 2016
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation allowances recorded	$ 129.1	$ 117.7
Aquaterra Corporation [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation allowances recorded		27.3
Eden Acquisition [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation allowances recorded		$ 23.8