Other Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 27, 2015	Mar. 28, 2014
Equity [Abstract]
Total Comprehensive Earnings, net of tax	$ 440us-gaap_ComprehensiveIncomeNetOfTax	$ 414us-gaap_ComprehensiveIncomeNetOfTax
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance, Net of Tax	(666)
Other Comprehensive Income (Loss)
Loss Before Reclassifications	(11)
Amounts Reclassified to Net Earnings	17
Tax Expense	(8)
Total Other Comprehensive Income (Loss)	(2)
Ending Balance, Net of Tax	(668)
Pension and Other Post-Employment Benefits
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance, Net of Tax	(611)
Other Comprehensive Income (Loss)
Loss Before Reclassifications	0
Amounts Reclassified to Net Earnings	18
Tax Expense	(8)
Total Other Comprehensive Income (Loss)	10
Ending Balance, Net of Tax	(601)
Other
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance, Net of Tax	(55)
Other Comprehensive Income (Loss)
Loss Before Reclassifications	(11)
Amounts Reclassified to Net Earnings	(1)
Tax Expense	0
Total Other Comprehensive Income (Loss)	(12)
Ending Balance, Net of Tax	$ (67)

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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-Name Accounting Standards Codification

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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

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Amount before tax of reclassification adjustments of other comprehensive income (loss).

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