Pension and Other Postretirement Benefits (Tables)

6 Months Ended

Jun. 29, 2012

Pension and Other Postretirement Benefits [Abstract]

Components of net periodic benefit cost

	Pension Plans												Postretirement Benefit Plans
	Second Quarter Ended						First Half Ended						Second Quarter Ended						First Half Ended
	June 29, 2012			July 1, 2011			June 29, 2012			July 1, 2011			June 29, 2012			July 1, 2011			June 29, 2012			July 1, 2011
	(in millions)
Components of net periodic benefit cost:
Service cost	$	29		$	28		$	59		$	56		$	2		$	2		$	3		$	3
Interest cost		33			32			66			64			2			2			5			5
Expected return on plan assets		(36	)		(35	)		(71	)		(70	)		(1	)		—			(2	)		(1	)
Amortization of prior service credits		—			—			—			—			(1	)		(1	)		(1	)		(2	)
Amortization of net losses		17			13			34			27			1			1			1			1
Curtailment loss (gain)		—			1			1			2			—			(1	)		—			—
Net periodic benefit cost	$	43		$	39		$	89		$	79		$	3		$	3		$	6		$	6