Postretirement Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2012

Components of Net Periodic Benefit Costs

The components of our net periodic benefit costs for our qualified defined benefit and retiree medical and life insurance plans were as follows (in millions):

	Quarters Ended						Nine Months Ended
	September 30, 2012			September 25, 2011			September 30, 2012			September 25, 2011
Qualified defined benefit pension plans
Service cost		$ 264			$ 244			$    791			$    731
Interest cost		471			479			1,413			1,438
Expected return on plan assets		(547	)		(509	)		(1,640	)		(1,525	)
Recognized net actuarial losses		279			220			837			660
Amortization of prior service cost		18			21			55			62
Total net pension expense		$ 485			$ 455			$ 1,456			$ 1,366
Retiree medical and life insurance plans
Service cost		$     7			$     8			$      21			$      24
Interest cost		33			41			99			122
Expected return on plan assets		(33	)		(35	)		(99	)		(105	)
Recognized net actuarial losses		8			8			24			25
Amortization of prior service credit		(3	)		(4	)		(9	)		(12	)
Total net postretirement expense		$   12			$   18			$      36			$      54