Income Taxes (Narrative) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended			12 Months Ended
	Dec. 31, 2011	Jun. 26, 2011	Mar. 28, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
Total net state income tax expense				$ 149	$ 168	$ 144
U.S. federal statutory income tax rate				35.00%
Reduction in effective income tax rate				2.50%
Increase in tax expense related to Medicare Part D reimbursement			96		96
Decrease in diluted earnings per share, in USD, due to write off of deferred tax assets associated with retiree prescription drug expenses					$ 0.26
Recognized tax benefit for the impact of the tax credit	36			35	43	43
Reduction in income tax expense due to IRS examinations		89		89	10	69
Increase in diluted earnings per share, in USD, as a result of resolution of previous tax matters				$ 0.26		$ 0.18
Deduction rate related to U.S. manufacturing activity				9.00%	9.00%	6.00%
Liabilities for unrecognized tax benefits related to permanent and temporary tax adjustments, exclusive of interest					160
Undistributed foreign companies, earnings not taxed to U.S. income taxes and foreign withholding taxes				193	108	123
Income tax expense on undistributed earnings of foreign companies if remitted				41	17	29
Federal and foreign income tax payments, net of refunds received				722	806	986
Refund received from the IRS related to estimated taxes paid for the prior year				250	325
Tax payment related to sale of EIG					260
Advance payment related to matters pending with IRS Appeals					$ 85