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Derivative Financial Instruments and Fair Value Measurements (Narrative) (Details) $ in Thousands, € in Millions, £ in Millions, SFr in Millions	12 Months Ended
	Dec. 28, 2019 USD ($) T	Dec. 29, 2018 USD ($) T	Dec. 30, 2017 USD ($)	Dec. 28, 2019 CHF (SFr)	Dec. 28, 2019 EUR (€)	Dec. 28, 2019 GBP (£)	Dec. 28, 2019 USD ($)
Derivative [Line Items]
Unrealized gain (loss) on derivative contracts	$ 410	$ (465)	$ 631
Fair value adjustments	0	(2,635)	371
Not designated as hedging instruments [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Income, Net	$ (700)	$ 1,600	(2,400)
Not designated as hedging instruments [Member] \| Cocoa [Member] \| Future And Forward Contracts [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount \| T	3,210	6,730
Not designated as hedging instruments [Member] \| Coffee [Member] \| Future And Forward Contracts [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount \| T	306	85
Not designated as hedging instruments [Member] \| Recurring basis [Member]
Derivative [Line Items]
Unrealized gain (loss) on derivative contracts	$ 400	$ (600)	(0)
Not designated as hedging instruments [Member] \| Recurring basis [Member] \| Forward Foreign Exchange Contracts To Swiss francs To Buy U. S. Dollars Member
Derivative [Line Items]
Derivative, notional amount				SFr 1.2			$ 1,200
Not designated as hedging instruments [Member] \| Recurring basis [Member] \| Forward Foreign Exchange Contracts To Sell Euros To Buy U.S. Dollars [Member]
Derivative [Line Items]
Derivative, notional amount					€ 14.5		$ 16,400
Not designated as hedging instruments [Member] \| Recurring basis [Member] \| Forward Foreign Exchange Contracts To Sell British Pounds To Buy Euros [Member]
Derivative [Line Items]
Derivative, notional amount					€ 0.9	£ 0.8
Not designated as hedging instruments [Member] \| Recurring basis [Member] \| Soy And Corn [Member]
Derivative [Line Items]
Unrealized gain (loss) on derivative contracts		100	600
Designated as hedging instruments [Member] \| Recurring basis [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative [Line Items]
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net		500	1,800
Gain (Loss) on Components Excluded from Assessment of Foreign Currency Cash Flow Hedge Effectiveness		$ 100	$ 1,400
Foreign exchange loss an unrealized gain ineffective portion of the hedge			0.9