Exit or Disposal Activities (Ongoing Initiatives) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			19 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011	Dec. 28, 2013
COGS Program [Member] | COGS [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, incurred cost	$ 21	$ 43	$ 36
SGA Programs [Member] | SGA [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, incurred cost	21	13	25
COGS and SGA Programs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, incurred cost	42	56	61
Restructuring and related costs, costs incurred to date				143
COGS and SGA Programs [Member] | U.S. Morning Foods [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, incurred cost	9	16	11
Restructuring and related costs, costs incurred to date				21
COGS and SGA Programs [Member] | U.S. Snacks [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, incurred cost	11	10	24
Restructuring and related costs, costs incurred to date				47
COGS and SGA Programs [Member] | U.S. Specialty [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, incurred cost	2	1	1
Restructuring and related costs, costs incurred to date				6
COGS and SGA Programs [Member] | North America Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, incurred cost	2	6	6
Restructuring and related costs, costs incurred to date				4
COGS and SGA Programs [Member] | Europe [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, incurred cost	8	3	16
Restructuring and related costs, costs incurred to date				37
COGS and SGA Programs [Member] | Latin America [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, incurred cost	1	2	1
Restructuring and related costs, costs incurred to date				2
COGS and SGA Programs [Member] | Asia Pacific [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, incurred cost	8	18	2
Restructuring and related costs, costs incurred to date				26
COGS and SGA Programs [Member] | Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, incurred cost	1	0	0
Restructuring and related costs, costs incurred to date				0
COGS and SGA Programs [Member] | Employee Related Cost [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, incurred cost	7	0	18
Restructuring and related costs, costs incurred to date				38
COGS and SGA Programs [Member] | Asset Related Cost [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, incurred cost	4	4	4
Restructuring and related costs, costs incurred to date				8
COGS and SGA Programs [Member] | Asset Impairment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, incurred cost	4	17	0
Restructuring and related costs, costs incurred to date				21
COGS and SGA Programs [Member] | Other Cost [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, incurred cost	27	35	39
Restructuring and related costs, costs incurred to date				$ 76