Comprehensive Income/(Loss) (Summary of Changes in AOCI) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			$ (574)
Foreign currency translation adjustments	$ 361	$ 181	(433)	$ 295
Net pension and post-retirement benefit (losses)/gains	(18)	(28)	(19)	(28)
Net deferred (losses)/gains on cash flow hedges from periodic revaluations	(10)	(100)	(77)	(159)
Net deferred losses/(gains) on cash flow hedges reclassified to earnings	(137)	1	(138)	4
Ending balance	(719)		(719)
Accumulated Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(574)
Foreign currency translation adjustments			(420)
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax			226
Net pension and post-retirement benefit (losses)/gains			0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			0
Net deferred (losses)/gains on cash flow hedges from periodic revaluations			0
Net deferred losses/(gains) on cash flow hedges reclassified to earnings			0
Net current-period other comprehensive (loss)/income			(194)
Ending balance	(768)		(768)
Accumulated Defined Benefit Plans Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			61
Foreign currency translation adjustments			0
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax			0
Net pension and post-retirement benefit (losses)/gains			(19)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			(7)
Net deferred (losses)/gains on cash flow hedges from periodic revaluations			0
Net deferred losses/(gains) on cash flow hedges reclassified to earnings			0
Net current-period other comprehensive (loss)/income			(12)
Ending balance	49		49
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(61)
Foreign currency translation adjustments			0
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax			0
Net pension and post-retirement benefit (losses)/gains			0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			0
Net deferred (losses)/gains on cash flow hedges from periodic revaluations			(77)
Net deferred losses/(gains) on cash flow hedges reclassified to earnings			(138)
Net current-period other comprehensive (loss)/income			61
Ending balance	0		0
The Kraft Heinz Company
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(574)
Foreign currency translation adjustments	360	186	(420)	292
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax			226
Net pension and post-retirement benefit (losses)/gains	(18)	(28)	(19)	(28)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			(7)
Net deferred (losses)/gains on cash flow hedges from periodic revaluations	(10)	(100)	(77)	(159)
Net deferred losses/(gains) on cash flow hedges reclassified to earnings	(137)	$ 1	(138)	$ 4
Net current-period other comprehensive (loss)/income			(145)
Ending balance	$ (719)		$ (719)