Employee Benefit Plans (Net Periodic Benefit Costs) (Details) (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Oct. 01, 2010	Sep. 30, 2011	Oct. 01, 2010
Components of net periodic benefit costs:
Service cost	$ 13	$ 10	$ 37	$ 31
Interest cost	14	13	42	37
Expected return on plan assets	(19)	(16)	(56)	(47)
Amortization of net prior service cost	0	0	1	1
Amortization of actuarial loss	2	2	6	6
Net periodic benefit cost	10	9	30	28
Other	0	0	3	0
Total costs	$ 10	$ 9	$ 33	$ 28