Reportable Segments (Reportable Segment Information) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Net sales	$ 3,501	$ 3,716	$ 3,714	$ 3,861	$ 3,563	$ 3,720	$ 3,474	$ 3,440	$ 14,792	$ 14,197	$ 13,198
Operating profit									2,837	1,562	1,427
Depreciation and amortization									532	448	369
Interest expense									235	261	233
Income taxes									792	363	320
Total assets	15,474				15,169				15,474	15,169	11,943
Additions to long-lived assets									637	891	594
U.S. Morning Foods [Member]
Net sales									3,465	3,533	3,450
Operating profit									485	588	609
Depreciation and amortization									181	132	130
U.S. Snacks [Member]
Net sales									3,534	3,400	3,044
Operating profit									447	476	439
Depreciation and amortization									144	123	92
U.S. Specialty [Member]
Net sales									1,202	1,121	1,008
Operating profit									265	241	231
Depreciation and amortization									8	5	5
North America Other [Member]
Net sales									1,515	1,485	1,371
Operating profit									275	265	250
Depreciation and amortization									30	34	30
Interest expense									6	4	0
North America [Member]
Total assets	10,643				10,602				10,643	10,602	9,128
Additions to long-lived assets									296	549	421
Europe [Member]
Net sales									2,860	2,527	2,334
Operating profit									256	261	302
Depreciation and amortization									84	66	57
Interest expense									6	4	4
Income taxes									4	(21)	31
Total assets	3,007				3,014				3,007	3,014	1,584
Additions to long-lived assets									182	209	61
Latin America [Member]
Net sales									1,195	1,121	1,049
Operating profit									157	167	176
Depreciation and amortization									29	26	20
Interest expense									1	4	6
Income taxes									35	36	49
Total assets	1,052				861				1,052	861	798
Additions to long-lived assets									70	40	53
Asia Pacific [Member]
Net sales									1,021	1,010	942
Operating profit									60	85	104
Depreciation and amortization									40	55	27
Interest expense									3	4	2
Income taxes									6	9	21
Total assets	1,049				1,107				1,049	1,107	529
Additions to long-lived assets									85	79	54
Total Reportable Segments [Member]
Operating profit									1,945	2,083	2,111
Depreciation and amortization									516	441	361
Corporate [Member]
Operating profit									892	(521)	(684)
Depreciation and amortization									16	7	8
Interest expense									219	245	221
Total assets	2,583				3,384				2,583	3,384	2,317
Additions to long-lived assets									4	14	5
Corporate and North America [Member]
Income taxes									747	339	219
Elimination entries [Member]
Total assets	$ (2,860)				$ (3,799)				$ (2,860)	$ (3,799)	$ (2,413)