Derivative Financial Instruments and Hedging Activities (Balance Sheet Captions) (Details) - USD ($) $ in Millions	Jun. 28, 2015	Dec. 28, 2014
Foreign exchange contracts
Assets:
Total assets	$ 55	$ 215
Liabilities:
Total liabilities	27	123
Foreign exchange contracts | Designated as Hedging Instrument
Assets:
Total assets	26	46
Liabilities:
Total liabilities	26	15
Foreign exchange contracts | Designated as Hedging Instrument | Other Receivables, Net
Assets:
Total assets	26	43
Foreign exchange contracts | Designated as Hedging Instrument | Other Non-Current Assets
Assets:
Total assets	0	3
Foreign exchange contracts | Designated as Hedging Instrument | Other Payables
Liabilities:
Total liabilities	26	14
Foreign exchange contracts | Designated as Hedging Instrument | Other Non-Current Liabilities
Liabilities:
Total liabilities	0	1
Foreign exchange contracts | Not Designated as Hedging Instrument
Assets:
Total assets	29	169
Liabilities:
Total liabilities	1	108
Foreign exchange contracts | Not Designated as Hedging Instrument | Other Receivables, Net
Assets:
Total assets	21	158
Foreign exchange contracts | Not Designated as Hedging Instrument | Other Non-Current Assets
Assets:
Total assets	8	11
Foreign exchange contracts | Not Designated as Hedging Instrument | Other Payables
Liabilities:
Total liabilities	1	108
Foreign exchange contracts | Not Designated as Hedging Instrument | Other Non-Current Liabilities
Liabilities:
Total liabilities	0	0
Interest rate contracts
Assets:
Total assets	0	2
Liabilities:
Total liabilities	12	16
Interest rate contracts | Designated as Hedging Instrument
Assets:
Total assets	0	2
Liabilities:
Total liabilities	0	16
Interest rate contracts | Designated as Hedging Instrument | Other Receivables, Net
Assets:
Total assets	0	0
Interest rate contracts | Designated as Hedging Instrument | Other Non-Current Assets
Assets:
Total assets	0	2
Interest rate contracts | Designated as Hedging Instrument | Other Payables
Liabilities:
Total liabilities	0	0
Interest rate contracts | Designated as Hedging Instrument | Other Non-Current Liabilities
Liabilities:
Total liabilities	0	16
Interest rate contracts | Not Designated as Hedging Instrument
Assets:
Total assets	0	0
Liabilities:
Total liabilities	12	0
Interest rate contracts | Not Designated as Hedging Instrument | Other Receivables, Net
Assets:
Total assets	0	0
Interest rate contracts | Not Designated as Hedging Instrument | Other Non-Current Assets
Assets:
Total assets	0	0
Interest rate contracts | Not Designated as Hedging Instrument | Other Payables
Liabilities:
Total liabilities	0	0
Interest rate contracts | Not Designated as Hedging Instrument | Other Non-Current Liabilities
Liabilities:
Total liabilities	12	0
Currency swap
Assets:
Total assets	551	357
Liabilities:
Total liabilities	91	2
Currency swap | Designated as Hedging Instrument
Assets:
Total assets	551	357
Liabilities:
Total liabilities	91	2
Currency swap | Designated as Hedging Instrument | Other Receivables, Net
Assets:
Total assets	0	0
Currency swap | Designated as Hedging Instrument | Other Non-Current Assets
Assets:
Total assets	551	357
Currency swap | Designated as Hedging Instrument | Other Payables
Liabilities:
Total liabilities	0	0
Currency swap | Designated as Hedging Instrument | Other Non-Current Liabilities
Liabilities:
Total liabilities	91	2
Currency swap | Not Designated as Hedging Instrument
Assets:
Total assets	0	0
Liabilities:
Total liabilities	0	0
Currency swap | Not Designated as Hedging Instrument | Other Receivables, Net
Assets:
Total assets	0	0
Currency swap | Not Designated as Hedging Instrument | Other Non-Current Assets
Assets:
Total assets	0	0
Currency swap | Not Designated as Hedging Instrument | Other Payables
Liabilities:
Total liabilities	0	0
Currency swap | Not Designated as Hedging Instrument | Other Non-Current Liabilities
Liabilities:
Total liabilities	$ 0	$ 0