Stock Transactions And Stock-Based Compensation (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 29, 2012	Jun. 29, 2012	Jul. 01, 2011	May 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Shares Authorized (shares)	2,000,000,000	2,000,000,000		1,000,000,000
Common stock, par value (dollars per share)	$ 0.01	$ 0.01			$ 0.01
Common shares reserved for issuance under the 2007 Stock Incentive Plan (shares)	19,000,000	19,000,000
Aggregate intrinsic value of options exercised		$ 128	$ 56
Cash receipts due to exercise of options		109	59
Tax benefit realized related to exercise of stock options	11	44
Tax benefit related to the vesting of restricted stock units	2	22
Total number of shares withheld sufficient to fund minimum tax withholding requirements related to the vesting of restricted stock units (shares)		1,000,000
Total value of shares withheld sufficient to fund minimum tax withholding requirements related to the vesting of restricted stock units		55
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost	121	121
Weighted average period for cost to be recognized (in years)		2
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost	$ 127	$ 127
Weighted average period for cost to be recognized (in years)		2