Property, Plant and Equipment (Details Textual) (USD $)	12 Months Ended
Dec. 28, 2014	Dec. 29, 2013	Dec. 30, 2012
Property Plant And Equipment (Textual) [Abstract]
Interest expense capitalized	$ 115,000,000us-gaap_InterestCostsCapitalized	$ 105,000,000us-gaap_InterestCostsCapitalized	$ 115,000,000us-gaap_InterestCostsCapitalized
Depreciation expense, including the amortization of capitalized interest	$ 2,500,000,000	$ 2,700,000,000	$ 2,500,000,000

Amount of interest capitalized during the period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Allowance for Funds Used during Construction

-URI http://asc.fasb.org/extlink&oid=6504829

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391

Name:	us-gaap_InterestCostsCapitalized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration