Pensions and Other Postretirement Benefits (Tables)

9 Months Ended

Sep. 30, 2011

Pensions and Other Postretirement Benefits (Tables) [Abstract]

Components of net periodic benefit cost

	Pension Plans												Postretirement Benefit Plans
	Third Quarter Ended						Year-to-Date Ended						Third Quarter Ended					Year-to-Date Ended
	September 30,			September 24,			September 30,			September 24,			September 30,			September 24,		September 30,			September 24,
	2011			2010			2011			2010			2011			2010		2011			2010
	(in millions)
Components of net periodic benefit cost:
Service cost	$	24		$	24		$	80		$	73		$	1		$	—	$	4		$	3
Interest cost		32			32			96			92			3			2		8			8
Expected return on plan assets		(34	)		(28	)		(104	)		(84	)		(1	)		—		(2	)		(1	)
Amortization of prior service costs (credits)		—			1			—			3			—			—		(2	)		(2	)
Amortization of net losses (gains)		11			11			38			30			(1	)		—		—			—
Curtailment gains		(2	)		—			—			—			—			—		—			(2	)
Net periodic benefit cost	$	31		$	40		$	110		$	114		$	2		$	2	$	8		$	6