Discontinued Operations - Major Components of Net Income (Loss) from Discontinued Operations, Net of Income Taxes in Consolidated Statements of Operations (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income tax (benefit) expense	$ (30.0)	$ 21.2	$ (15.1)
Discontinued Operations, Disposed of by Sale [Member] | Traditional CSD and Juice Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Interest expense on short-term borrowings and debt required to be repaid or extinguished as part of divestiture	49.5	81.2	80.9
Discontinued Operations, Disposed of by Sale [Member] | Traditional CSD and Juice Business [Member] | U.S. Federal [Member] | Valuation Allowance of Deferred Tax Assets [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income tax (benefit) expense	$ 26.9	$ 26.9	$ 26.9