Other Financial Data (Amounts Reclassified From Accumulated Other Comprehensive Loss) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 31, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reclassification Out Of Accumulated Other Comprehensive Income [Line Items]
Costs of product sales									$ 1,678	$ 1,808	$ 1,795
Gains on sales of investments and businesses, net									(5)	(37)	(26)
Earnings from discontinued operations									(1,888)	(3)	(7)
Selling, general and administrative expenses	282	287	308	307	347	319	339	325	1,184	1,330	1,472
Total before tax									1,161	(880)	(881)
Tax expense or (benefit)									(465)	(59)	211
Net earnings									(1,300)	(1,105)	(881)
Reclassification Out Of Accumulated Other Comprehensive Income
Reclassification Out Of Accumulated Other Comprehensive Income [Line Items]
Earnings from discontinued operations									(1)	0
Net earnings									1,153	66
Reclassification Out Of Accumulated Other Comprehensive Income | Gains and Losses on Cash Flow Hedges
Reclassification Out Of Accumulated Other Comprehensive Income [Line Items]
Costs of product sales									1	(1)
Net earnings									1	(1)
Reclassification Out Of Accumulated Other Comprehensive Income | Unrealized Gains and Losses on Available-for-Sale Securities
Reclassification Out Of Accumulated Other Comprehensive Income [Line Items]
Gains on sales of investments and businesses, net									0	(4)
Tax expense or (benefit)									0	1
Net earnings									0	(3)
Reclassification Out Of Accumulated Other Comprehensive Income | Foreign Currency Translation Adjustments
Reclassification Out Of Accumulated Other Comprehensive Income [Line Items]
Earnings from discontinued operations									(75)	0
Tax expense or (benefit)									16	0
Net earnings									(59)	0
Reclassification Out Of Accumulated Other Comprehensive Income | Amortization of prior-service costs
Reclassification Out Of Accumulated Other Comprehensive Income [Line Items]
Selling, general and administrative expenses									(57)	(49)
Reclassification Out Of Accumulated Other Comprehensive Income | Accumulated Defined Benefit Plans Adjustment, Net Unamortized Gain (Loss)
Reclassification Out Of Accumulated Other Comprehensive Income [Line Items]
Selling, general and administrative expenses									118	159
Reclassification Out Of Accumulated Other Comprehensive Income | Settlement of pension plan
Reclassification Out Of Accumulated Other Comprehensive Income [Line Items]
Other charges									1,883	0
Reclassification Out Of Accumulated Other Comprehensive Income | Retirement Benefit Items
Reclassification Out Of Accumulated Other Comprehensive Income [Line Items]
Total before tax									1,943	110
Tax expense or (benefit)									(732)	(40)
Net earnings									$ 1,211	$ 70