Reportable Segments (Details) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2017 USD ($)	Oct. 01, 2016 USD ($)	Sep. 30, 2017 USD ($)	Oct. 01, 2016 USD ($)
Segment Reporting Information [Line Items]
Venezuela remeasurement					$ 13
Number of operating segments				9
Number of remaining reportable segments based on geographical locations				3
Net sales		$ 3,273	$ 3,254	$ 9,714	9,917
Operating profit		464	410	1,277	1,297
Mark-to-market adjustments for pension plans, commodity and foreign currency contracts		(104)	(31)	(118)	(35)
Operating Segments
Segment Reporting Information [Line Items]
Operating profit		416	459	1,246	1,372
Operating Segments | U.S. Morning Foods
Segment Reporting Information [Line Items]
Net sales		710	733	2,108	2,227
Operating profit		141	144	477	457
Operating Segments | U.S. Snacks
Segment Reporting Information [Line Items]
Net sales		760	796	2,344	2,431
Operating profit		14	78	(8)	230
Operating Segments | U.S. Specialty
Segment Reporting Information [Line Items]
Net sales		290	284	961	931
Operating profit		76	68	242	214
Operating Segments | North America Other
Segment Reporting Information [Line Items]
Net sales		420	402	1,204	1,222
Operating profit		65	43	173	135
Operating Segments | Europe
Segment Reporting Information [Line Items]
Net sales		599	594	1,677	1,821
Operating profit		72	78	214	216
Operating Segments | Latin America
Segment Reporting Information [Line Items]
Net sales		240	197	696	593
Operating profit		23	27	82	70	[1]
Operating Segments | Asia Pacific
Segment Reporting Information [Line Items]
Net sales		254	248	724	692
Operating profit		25	21	66	50
Corporate
Segment Reporting Information [Line Items]
Operating profit	[2]	$ 48	$ (49)	$ 31	$ (75)

[1] Includes non-cash losses totaling $13 million associated with the remeasurement of the financial statements of the Company's Venezuela subsidiary during the year-to-date period ended October 1, 2016, respectively.

[2] Includes mark-to-market adjustments for pension and postretirement plans, commodity and foreign currency contracts totaling ($104) million and ($31) million for the quarters ended September 30, 2017 and October 1, 2016, respectively. Includes mark-to-market adjustments for pension and postretirement plans, commodity and foreign currency contracts totaling ($118) million and ($35) million for the year-to-date periods ended September 30, 2017 and October 1, 2016, respectively. See further discussion in Note 9 Employee benefits.