Derivative Instruments and Fair Value Measurements (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) (USD $)	Sep. 27, 2014	Dec. 28, 2013
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Assets	$ 14,000,000	$ 7,000,000
Liabilities	(91,000,000)	(95,000,000)
Not Designated [Member]
Derivatives, Fair Value [Line Items]
Assets	0	3,000,000
Liabilities	(35,000,000)	(7,000,000)
Level 1 [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Assets	0	0
Liabilities	0	0
Level 1 [Member] | Not Designated [Member]
Derivatives, Fair Value [Line Items]
Assets	0	3,000,000
Liabilities	(35,000,000)	(7,000,000)
Level 2 [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Assets	14,000,000	7,000,000
Liabilities	(91,000,000)	(95,000,000)
Level 2 [Member] | Not Designated [Member]
Derivatives, Fair Value [Line Items]
Assets	0	0
Liabilities	0	0
Foreign Currency Exchange Contracts [Member] | Other Prepaid Assets [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Assets	14,000,000	7,000,000
Foreign Currency Exchange Contracts [Member] | Other Prepaid Assets [Member] | Level 1 [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Assets	0	0
Foreign Currency Exchange Contracts [Member] | Other Prepaid Assets [Member] | Level 2 [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Assets	14,000,000	7,000,000
Foreign Currency Exchange Contracts [Member] | Other Current Liabilities [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Liabilities	(6,000,000)	(8,000,000)
Foreign Currency Exchange Contracts [Member] | Other Current Liabilities [Member] | Level 1 [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Liabilities	0	0
Foreign Currency Exchange Contracts [Member] | Other Current Liabilities [Member] | Level 2 [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Liabilities	(6,000,000)	(8,000,000)
Interest Rate Contracts [Member] | Level 2 [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Fair value of the related hedged portion of long-term debt	2,500,000,000	2,500,000,000
Interest Rate Contracts [Member] | Other Current Liabilities [Member] | Level 2 [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Liabilities	25,000,000
Interest Rate Contracts [Member] | Other Liabilities [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Liabilities	(38,000,000)	(59,000,000)
Interest Rate Contracts [Member] | Other Liabilities [Member] | Level 1 [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Liabilities	0	0
Interest Rate Contracts [Member] | Other Liabilities [Member] | Level 2 [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Liabilities	(38,000,000)	(59,000,000)
Commodity Contracts [Member] | Other Prepaid Assets [Member] | Not Designated [Member]
Derivatives, Fair Value [Line Items]
Assets	0	3,000,000
Commodity Contracts [Member] | Other Prepaid Assets [Member] | Level 1 [Member] | Not Designated [Member]
Derivatives, Fair Value [Line Items]
Assets	0	3,000,000
Commodity Contracts [Member] | Other Prepaid Assets [Member] | Level 2 [Member] | Not Designated [Member]
Derivatives, Fair Value [Line Items]
Assets	0	0
Commodity Contracts [Member] | Other Current Liabilities [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Liabilities	(10,000,000)	(9,000,000)
Commodity Contracts [Member] | Other Current Liabilities [Member] | Not Designated [Member]
Derivatives, Fair Value [Line Items]
Liabilities	(35,000,000)	(7,000,000)
Commodity Contracts [Member] | Other Current Liabilities [Member] | Level 1 [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Liabilities	0	0
Commodity Contracts [Member] | Other Current Liabilities [Member] | Level 1 [Member] | Not Designated [Member]
Derivatives, Fair Value [Line Items]
Liabilities	(35,000,000)	(7,000,000)
Commodity Contracts [Member] | Other Current Liabilities [Member] | Level 2 [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Liabilities	(10,000,000)	(9,000,000)
Commodity Contracts [Member] | Other Current Liabilities [Member] | Level 2 [Member] | Not Designated [Member]
Derivatives, Fair Value [Line Items]
Liabilities	0	0
Commodity Contracts [Member] | Other Liabilities [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Liabilities	(12,000,000)	(19,000,000)
Commodity Contracts [Member] | Other Liabilities [Member] | Level 1 [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Liabilities	0	0
Commodity Contracts [Member] | Other Liabilities [Member] | Level 2 [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Liabilities	$ (12,000,000)	$ (19,000,000)