Financial Instruments (Schedule Of Financial Instruments Measured At Fair Value On A Recurring Basis Using Significant Unobservable Inputs (Level 3)) (Details) (USD $)
In Millions, unless otherwise specified

3 Months Ended

6 Months Ended

Jun. 30, 2012

Jul. 02, 2011

Jun. 30, 2012

Jul. 02, 2011

Financial Instrument [Line Items]

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

	Quarter Ended
	June 30, 2012			July 2, 2011
	Auction Rate Securities			Auction Rate Securities
	(In millions)
Beginning balance	$	32		$	57
Redemption at par	—			(6		)
Gain (loss) included in net income (loss)	—			1
Change in fair value included in other comprehensive income (loss)	—			—
Ending balance	$	32		$	52
	Six Months Ended
	June 30, 2012			July 2, 2011
	Auction Rate Securities			Auction Rate Securities
	(In millions)
Beginning balance	$	38		$	57
Redemption at par	(6		)	(6		)
Gain (loss) included in net income (loss)	—			1
Change in fair value included in other comprehensive income (loss)	—			—
Ending balance	$	32		$	52

Beginning balance

$ 32

$ 57

$ 38

$ 57

Redemption at par

0

(6)

(6)

(6)

Ending balance

$ 32

$ 52

$ 32

$ 52